Merge pull request #3731 from karl-zylinski/rlgl-subpackage

Move rlgl to vendor:raylib/rlgl

vendor/raylib/rlgl.odin

@@ -1,555 +0,0 @@
-/**********************************************************************************************
-*
-*   rlgl v5.0 - A multi-OpenGL abstraction layer with an immediate-mode style API
-*
-*   DESCRIPTION:
-*       An abstraction layer for multiple OpenGL versions (1.1, 2.1, 3.3 Core, 4.3 Core, ES 2.0)
-*       that provides a pseudo-OpenGL 1.1 immediate-mode style API (rlVertex, rlTranslate, rlRotate...)
-*
-*   ADDITIONAL NOTES:
-*       When choosing an OpenGL backend different than OpenGL 1.1, some internal buffer are
-*       initialized on rlglInit() to accumulate vertex data.
-*
-*       When an internal state change is required all the stored vertex data is renderer in batch,
-*       additionally, rlDrawRenderBatchActive() could be called to force flushing of the batch.
-*
-*       Some resources are also loaded for convenience, here the complete list:
-*          - Default batch (RLGL.defaultBatch): RenderBatch system to accumulate vertex data
-*          - Default texture (RLGL.defaultTextureId): 1x1 white pixel R8G8B8A8
-*          - Default shader (RLGL.State.defaultShaderId, RLGL.State.defaultShaderLocs)
-*
-*       Internal buffer (and resources) must be manually unloaded calling rlglClose().
-*
-*   CONFIGURATION:
-*       #define GRAPHICS_API_OPENGL_11
-*       #define GRAPHICS_API_OPENGL_21
-*       #define GRAPHICS_API_OPENGL_33
-*       #define GRAPHICS_API_OPENGL_43
-*       #define GRAPHICS_API_OPENGL_ES2
-*       #define GRAPHICS_API_OPENGL_ES3
-*           Use selected OpenGL graphics backend, should be supported by platform
-*           Those preprocessor defines are only used on rlgl module, if OpenGL version is
-*           required by any other module, use rlGetVersion() to check it
-*
-*       #define RLGL_IMPLEMENTATION
-*           Generates the implementation of the library into the included file.
-*           If not defined, the library is in header only mode and can be included in other headers
-*           or source files without problems. But only ONE file should hold the implementation.
-*
-*       #define RLGL_RENDER_TEXTURES_HINT
-*           Enable framebuffer objects (fbo) support (enabled by default)
-*           Some GPUs could not support them despite the OpenGL version
-*
-*       #define RLGL_SHOW_GL_DETAILS_INFO
-*           Show OpenGL extensions and capabilities detailed logs on init
-*
-*       #define RLGL_ENABLE_OPENGL_DEBUG_CONTEXT
-*           Enable debug context (only available on OpenGL 4.3)
-*
-*       rlgl capabilities could be customized just defining some internal
-*       values before library inclusion (default values listed):
-*
-*       #define RL_DEFAULT_BATCH_BUFFER_ELEMENTS   8192    // Default internal render batch elements limits
-*       #define RL_DEFAULT_BATCH_BUFFERS              1    // Default number of batch buffers (multi-buffering)
-*       #define RL_DEFAULT_BATCH_DRAWCALLS          256    // Default number of batch draw calls (by state changes: mode, texture)
-*       #define RL_DEFAULT_BATCH_MAX_TEXTURE_UNITS    4    // Maximum number of textures units that can be activated on batch drawing (SetShaderValueTexture())
-*
-*       #define RL_MAX_MATRIX_STACK_SIZE             32    // Maximum size of internal Matrix stack
-*       #define RL_MAX_SHADER_LOCATIONS              32    // Maximum number of shader locations supported
-*       #define RL_CULL_DISTANCE_NEAR              0.01    // Default projection matrix near cull distance
-*       #define RL_CULL_DISTANCE_FAR             1000.0    // Default projection matrix far cull distance
-*
-*       When loading a shader, the following vertex attributes and uniform
-*       location names are tried to be set automatically:
-*
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_POSITION     "vertexPosition"    // Bound by default to shader location: 0
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD     "vertexTexCoord"    // Bound by default to shader location: 1
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_NORMAL       "vertexNormal"      // Bound by default to shader location: 2
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR        "vertexColor"       // Bound by default to shader location: 3
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT      "vertexTangent"     // Bound by default to shader location: 4
-*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2    "vertexTexCoord2"   // Bound by default to shader location: 5
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_MVP         "mvp"               // model-view-projection matrix
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_VIEW        "matView"           // view matrix
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_PROJECTION  "matProjection"     // projection matrix
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_MODEL       "matModel"          // model matrix
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_NORMAL      "matNormal"         // normal matrix (transpose(inverse(matModelView))
-*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR       "colDiffuse"        // color diffuse (base tint color, multiplied by texture color)
-*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0  "texture0"          // texture0 (texture slot active 0)
-*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE1  "texture1"          // texture1 (texture slot active 1)
-*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE2  "texture2"          // texture2 (texture slot active 2)
-*
-*   DEPENDENCIES:
-*      - OpenGL libraries (depending on platform and OpenGL version selected)
-*      - GLAD OpenGL extensions loading library (only for OpenGL 3.3 Core, 4.3 Core)
-*
-*
-*   LICENSE: zlib/libpng
-*
-*   Copyright (c) 2014-2023 Ramon Santamaria (@raysan5)
-*
-*   This software is provided "as-is", without any express or implied warranty. In no event
-*   will the authors be held liable for any damages arising from the use of this software.
-*
-*   Permission is granted to anyone to use this software for any purpose, including commercial
-*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
-*
-*     1. The origin of this software must not be misrepresented; you must not claim that you
-*     wrote the original software. If you use this software in a product, an acknowledgment
-*     in the product documentation would be appreciated but is not required.
-*
-*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
-*     as being the original software.
-*
-*     3. This notice may not be removed or altered from any source distribution.
-*
-**********************************************************************************************/
-
-
-package raylib
-
-import "core:c"
-
-RLGL_VERSION :: "4.5"
-
-when ODIN_OS == .Windows {
-	foreign import lib {
-		"windows/raylib.lib",
-		"system:Winmm.lib",
-		"system:Gdi32.lib",
-		"system:User32.lib",
-		"system:Shell32.lib",
-	}
-} else when ODIN_OS == .Linux  {
-	foreign import lib "linux/libraylib.a"
-} else when ODIN_OS == .Darwin {
-	foreign import lib {
-		"macos-arm64/libraylib.a" when ODIN_ARCH == .arm64 else "macos/libraylib.a",
-		"system:Cocoa.framework",
-		"system:OpenGL.framework",
-		"system:IOKit.framework",
-	}
-} else {
-	foreign import lib "system:raylib"
-}
-
-RL_GRAPHICS_API_OPENGL_11  :: false
-RL_GRAPHICS_API_OPENGL_21  :: true
-RL_GRAPHICS_API_OPENGL_33  :: RL_GRAPHICS_API_OPENGL_21 // default currently
-RL_GRAPHICS_API_OPENGL_ES2 :: false
-RL_GRAPHICS_API_OPENGL_43  :: false
-RL_GRAPHICS_API_OPENGL_ES3 :: false
-
-when RL_GRAPHICS_API_OPENGL_ES3 {
-	RL_GRAPHICS_API_OPENGL_ES2 :: true
-}
- 
-when !RL_GRAPHICS_API_OPENGL_ES2 {
-	// This is the maximum amount of elements (quads) per batch
-	// NOTE: Be careful with text, every letter maps to a quad
-	RL_DEFAULT_BATCH_BUFFER_ELEMENTS :: 8192
-} else {
-	// We reduce memory sizes for embedded systems (RPI and HTML5)
-	// NOTE: On HTML5 (emscripten) this is allocated on heap,
-	// by default it's only 16MB!...just take care...
-	RL_DEFAULT_BATCH_BUFFER_ELEMENTS :: 2048
-}
-
-RL_DEFAULT_BATCH_BUFFERS            :: 1                    // Default number of batch buffers (multi-buffering)
-RL_DEFAULT_BATCH_DRAWCALLS          :: 256                  // Default number of batch draw calls (by state changes: mode, texture)
-RL_DEFAULT_BATCH_MAX_TEXTURE_UNITS  :: 4                    // Maximum number of additional textures that can be activated on batch drawing (SetShaderValueTexture())
-
-// Internal Matrix stack
-RL_MAX_MATRIX_STACK_SIZE          :: 32                   // Maximum size of Matrix stack
-
-// Shader limits
-RL_MAX_SHADER_LOCATIONS           :: 32                   // Maximum number of shader locations supported
-
-// Projection matrix culling
-RL_CULL_DISTANCE_NEAR          :: 0.01                 // Default near cull distance
-RL_CULL_DISTANCE_FAR           :: 1000.0               // Default far cull distance
-
-// Texture parameters (equivalent to OpenGL defines)
-RL_TEXTURE_WRAP_S                       :: 0x2802      // GL_TEXTURE_WRAP_S
-RL_TEXTURE_WRAP_T                       :: 0x2803      // GL_TEXTURE_WRAP_T
-RL_TEXTURE_MAG_FILTER                   :: 0x2800      // GL_TEXTURE_MAG_FILTER
-RL_TEXTURE_MIN_FILTER                   :: 0x2801      // GL_TEXTURE_MIN_FILTER
-
-RL_TEXTURE_FILTER_NEAREST               :: 0x2600      // GL_NEAREST
-RL_TEXTURE_FILTER_LINEAR                :: 0x2601      // GL_LINEAR
-RL_TEXTURE_FILTER_MIP_NEAREST           :: 0x2700      // GL_NEAREST_MIPMAP_NEAREST
-RL_TEXTURE_FILTER_NEAREST_MIP_LINEAR    :: 0x2702      // GL_NEAREST_MIPMAP_LINEAR
-RL_TEXTURE_FILTER_LINEAR_MIP_NEAREST    :: 0x2701      // GL_LINEAR_MIPMAP_NEAREST
-RL_TEXTURE_FILTER_MIP_LINEAR            :: 0x2703      // GL_LINEAR_MIPMAP_LINEAR
-RL_TEXTURE_FILTER_ANISOTROPIC           :: 0x3000      // Anisotropic filter (custom identifier)
-
-RL_TEXTURE_WRAP_REPEAT                  :: 0x2901      // GL_REPEAT
-RL_TEXTURE_WRAP_CLAMP                   :: 0x812F      // GL_CLAMP_TO_EDGE
-RL_TEXTURE_WRAP_MIRROR_REPEAT           :: 0x8370      // GL_MIRRORED_REPEAT
-RL_TEXTURE_WRAP_MIRROR_CLAMP            :: 0x8742      // GL_MIRROR_CLAMP_EXT
-
-// Matrix modes (equivalent to OpenGL)
-RL_MODELVIEW                            :: 0x1700      // GL_MODELVIEW
-RL_PROJECTION                           :: 0x1701      // GL_PROJECTION
-RL_TEXTURE                              :: 0x1702      // GL_TEXTURE
-
-// Primitive assembly draw modes
-RL_LINES                                :: 0x0001      // GL_LINES
-RL_TRIANGLES                            :: 0x0004      // GL_TRIANGLES
-RL_QUADS                                :: 0x0007      // GL_QUADS
-
-// GL equivalent data types
-RL_UNSIGNED_BYTE                        :: 0x1401      // GL_UNSIGNED_BYTE
-RL_FLOAT                                :: 0x1406      // GL_FLOAT
-
-// Buffer usage hint
-RL_STREAM_DRAW                          :: 0x88E0      // GL_STREAM_DRAW
-RL_STREAM_READ                          :: 0x88E1      // GL_STREAM_READ
-RL_STREAM_COPY                          :: 0x88E2      // GL_STREAM_COPY
-RL_STATIC_DRAW                          :: 0x88E4      // GL_STATIC_DRAW
-RL_STATIC_READ                          :: 0x88E5      // GL_STATIC_READ
-RL_STATIC_COPY                          :: 0x88E6      // GL_STATIC_COPY
-RL_DYNAMIC_DRAW                         :: 0x88E8      // GL_DYNAMIC_DRAW
-RL_DYNAMIC_READ                         :: 0x88E9      // GL_DYNAMIC_READ
-RL_DYNAMIC_COPY                         :: 0x88EA      // GL_DYNAMIC_COPY
-
-// GL Shader type
-RL_FRAGMENT_SHADER                      :: 0x8B30      // GL_FRAGMENT_SHADER
-RL_VERTEX_SHADER                        :: 0x8B31      // GL_VERTEX_SHADER
-RL_COMPUTE_SHADER                       :: 0x91B9      // GL_COMPUTE_SHADER
-
-// GL blending factors
-RL_ZERO                                 :: 0           // GL_ZERO
-RL_ONE                                  :: 1           // GL_ONE
-RL_SRC_COLOR                            :: 0x0300      // GL_SRC_COLOR
-RL_ONE_MINUS_SRC_COLOR                  :: 0x0301      // GL_ONE_MINUS_SRC_COLOR
-RL_SRC_ALPHA                            :: 0x0302      // GL_SRC_ALPHA
-RL_ONE_MINUS_SRC_ALPHA                  :: 0x0303      // GL_ONE_MINUS_SRC_ALPHA
-RL_DST_ALPHA                            :: 0x0304      // GL_DST_ALPHA
-RL_ONE_MINUS_DST_ALPHA                  :: 0x0305      // GL_ONE_MINUS_DST_ALPHA
-RL_DST_COLOR                            :: 0x0306      // GL_DST_COLOR
-RL_ONE_MINUS_DST_COLOR                  :: 0x0307      // GL_ONE_MINUS_DST_COLOR
-RL_SRC_ALPHA_SATURATE                   :: 0x0308      // GL_SRC_ALPHA_SATURATE
-RL_CONSTANT_COLOR                       :: 0x8001      // GL_CONSTANT_COLOR
-RL_ONE_MINUS_CONSTANT_COLOR             :: 0x8002      // GL_ONE_MINUS_CONSTANT_COLOR
-RL_CONSTANT_ALPHA                       :: 0x8003      // GL_CONSTANT_ALPHA
-RL_ONE_MINUS_CONSTANT_ALPHA             :: 0x8004      // GL_ONE_MINUS_CONSTANT_ALPHA
-
-// GL blending functions/equations
-RL_FUNC_ADD                             :: 0x8006      // GL_FUNC_ADD
-RL_MIN                                  :: 0x8007      // GL_MIN
-RL_MAX                                  :: 0x8008      // GL_MAX
-RL_FUNC_SUBTRACT                        :: 0x800A      // GL_FUNC_SUBTRACT
-RL_FUNC_REVERSE_SUBTRACT                :: 0x800B      // GL_FUNC_REVERSE_SUBTRACT
-RL_BLEND_EQUATION                       :: 0x8009      // GL_BLEND_EQUATION
-RL_BLEND_EQUATION_RGB                   :: 0x8009      // GL_BLEND_EQUATION_RGB   // (Same as BLEND_EQUATION)
-RL_BLEND_EQUATION_ALPHA                 :: 0x883D      // GL_BLEND_EQUATION_ALPHA
-RL_BLEND_DST_RGB                        :: 0x80C8      // GL_BLEND_DST_RGB
-RL_BLEND_SRC_RGB                        :: 0x80C9      // GL_BLEND_SRC_RGB
-RL_BLEND_DST_ALPHA                      :: 0x80CA      // GL_BLEND_DST_ALPHA
-RL_BLEND_SRC_ALPHA                      :: 0x80CB      // GL_BLEND_SRC_ALPHA
-RL_BLEND_COLOR                          :: 0x8005      // GL_BLEND_COLOR
-
-
-//----------------------------------------------------------------------------------
-// Types and Structures Definition
-//----------------------------------------------------------------------------------
-
-
-VertexBufferIndexType :: c.ushort when RL_GRAPHICS_API_OPENGL_ES2 else c.uint
-
-// Dynamic vertex buffers (position + texcoords + colors + indices arrays)
-VertexBuffer :: struct {
-	elementCount: c.int,                 // Number of elements in the buffer (QUADS)
-
-	vertices:  [^]f32,                   // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
-	texcoords: [^]f32,                   // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
-	colors:    [^]u8,                    // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
-	indices:   [^]VertexBufferIndexType, // Vertex indices (in case vertex data comes indexed) (6 indices per quad)
-	vaoId:     c.uint,                   // OpenGL Vertex Array Object id
-	vboId:     [4]c.uint,                // OpenGL Vertex Buffer Objects id (4 types of vertex data)
-}
-
-// Draw call type
-// NOTE: Only texture changes register a new draw, other state-change-related elements are not
-// used at this moment (vaoId, shaderId, matrices), raylib just forces a batch draw call if any
-// of those state-change happens (this is done in core module)
-DrawCall :: struct {
-	mode:            c.int,        // Drawing mode: LINES, TRIANGLES, QUADS
-	vertexCount:     c.int,        // Number of vertex of the draw
-	vertexAlignment: c.int,        // Number of vertex required for index alignment (LINES, TRIANGLES)
-	textureId:       c.uint,       // Texture id to be used on the draw -> Use to create new draw call if changes
-}
-
-// RenderBatch type
-RenderBatch :: struct {
-	bufferCount:   c.int,           // Number of vertex buffers (multi-buffering support)
-	currentBuffer: c.int,           // Current buffer tracking in case of multi-buffering
-	vertexBuffer:  [^]VertexBuffer, // Dynamic buffer(s) for vertex data
-
-	draws:         [^]DrawCall,     // Draw calls array, depends on textureId
-	drawCounter:   c.int,           // Draw calls counter
-	currentDepth:  f32,             // Current depth value for next draw
-}
-
-
-// OpenGL version
-GlVersion :: enum c.int {
-	OPENGL_11 = 1,           // OpenGL 1.1
-	OPENGL_21,               // OpenGL 2.1 (GLSL 120)
-	OPENGL_33,               // OpenGL 3.3 (GLSL 330)
-	OPENGL_43,               // OpenGL 4.3 (using GLSL 330)
-	OPENGL_ES_20,            // OpenGL ES 2.0 (GLSL 100)
-	OPENGL_ES_30,            // OpenGL ES 3.0 (GLSL 300 es)
-}
-
-
-// Shader attribute data types
-ShaderAttributeDataType :: enum c.int {
-	FLOAT = 0,         // Shader attribute type: float
-	VEC2,              // Shader attribute type: vec2 (2 float)
-	VEC3,              // Shader attribute type: vec3 (3 float)
-	VEC4,              // Shader attribute type: vec4 (4 float)
-}
-
-// Framebuffer attachment type
-// NOTE: By default up to 8 color channels defined, but it can be more
-FramebufferAttachType :: enum c.int {
-	COLOR_CHANNEL0 = 0,   // Framebuffer attachment type: color 0
-	COLOR_CHANNEL1 = 1,   // Framebuffer attachment type: color 1
-	COLOR_CHANNEL2 = 2,   // Framebuffer attachment type: color 2
-	COLOR_CHANNEL3 = 3,   // Framebuffer attachment type: color 3
-	COLOR_CHANNEL4 = 4,   // Framebuffer attachment type: color 4
-	COLOR_CHANNEL5 = 5,   // Framebuffer attachment type: color 5
-	COLOR_CHANNEL6 = 6,   // Framebuffer attachment type: color 6
-	COLOR_CHANNEL7 = 7,   // Framebuffer attachment type: color 7
-	DEPTH = 100,          // Framebuffer attachment type: depth
-	STENCIL = 200,        // Framebuffer attachment type: stencil
-}
-
-// Framebuffer texture attachment type
-FramebufferAttachTextureType :: enum c.int {
-	CUBEMAP_POSITIVE_X = 0, // Framebuffer texture attachment type: cubemap, +X side
-	CUBEMAP_NEGATIVE_X = 1, // Framebuffer texture attachment type: cubemap, -X side
-	CUBEMAP_POSITIVE_Y = 2, // Framebuffer texture attachment type: cubemap, +Y side
-	CUBEMAP_NEGATIVE_Y = 3, // Framebuffer texture attachment type: cubemap, -Y side
-	CUBEMAP_POSITIVE_Z = 4, // Framebuffer texture attachment type: cubemap, +Z side
-	CUBEMAP_NEGATIVE_Z = 5, // Framebuffer texture attachment type: cubemap, -Z side
-	TEXTURE2D = 100,        // Framebuffer texture attachment type: texture2d
-	RENDERBUFFER = 200,     // Framebuffer texture attachment type: renderbuffer
-}
-
-CullMode :: enum c.int {
-	FRONT = 0,
-	BACK,
-}
-
-@(default_calling_convention="c")
-foreign lib {
-	//------------------------------------------------------------------------------------
-	// Functions Declaration - Matrix operations
-	//------------------------------------------------------------------------------------
-	rlMatrixMode   :: proc(mode: c.int) ---                 // Choose the current matrix to be transformed
-	rlPushMatrix   :: proc() ---                            // Push the current matrix to stack
-	rlPopMatrix    :: proc() ---                            // Pop lattest inserted matrix from stack
-	rlLoadIdentity :: proc() ---                            // Reset current matrix to identity matrix
-	rlTranslatef   :: proc(x, y, z: f32) ---                // Multiply the current matrix by a translation matrix
-	rlRotatef      :: proc(angleDeg: f32, x, y, z: f32) --- // Multiply the current matrix by a rotation matrix
-	rlScalef       :: proc(x, y, z: f32) ---                // Multiply the current matrix by a scaling matrix
-	rlMultMatrixf  :: proc(matf: [^]f32) ---                // Multiply the current matrix by another matrix
-	rlFrustum      :: proc(left, right, bottom, top, znear, zfar: f64) ---
-	rlOrtho        :: proc(left, right, bottom, top, znear, zfar: f64) ---
-	rlViewport     :: proc(x, y, width, height: c.int) ---  // Set the viewport area
-
-	//------------------------------------------------------------------------------------
-	// Functions Declaration - Vertex level operations
-	//------------------------------------------------------------------------------------
-	rlBegin        :: proc(mode: c.int)     --- // Initialize drawing mode (how to organize vertex)
-	rlEnd          :: proc()                --- // Finish vertex providing
-	rlVertex2i     :: proc(x, y: c.int)     --- // Define one vertex (position) - 2 int
-	rlVertex2f     :: proc(x, y: f32)       --- // Define one vertex (position) - 2 f32
-	rlVertex3f     :: proc(x, y, z: f32)    --- // Define one vertex (position) - 3 f32
-	rlTexCoord2f   :: proc(x, y: f32)       --- // Define one vertex (texture coordinate) - 2 f32
-	rlNormal3f     :: proc(x, y, z: f32)    --- // Define one vertex (normal) - 3 f32
-	rlColor4ub     :: proc(r, g, b, a: u8)  --- // Define one vertex (color) - 4 byte
-	rlColor3f      :: proc(x, y, z: f32)    --- // Define one vertex (color) - 3 f32
-	rlColor4f      :: proc(x, y, z, w: f32) --- // Define one vertex (color) - 4 f32
-
-	//------------------------------------------------------------------------------------
-	// Functions Declaration - OpenGL style functions (common to 1.1, 3.3+, ES2)
-	// NOTE: This functions are used to completely abstract raylib code from OpenGL layer,
-	// some of them are direct wrappers over OpenGL calls, some others are custom
-	//------------------------------------------------------------------------------------
-
-	// Vertex buffers state
-	rlEnableVertexArray          :: proc(vaoId: c.uint) -> bool --- // Enable vertex array (VAO, if supported)
-	rlDisableVertexArray         :: proc() ---                      // Disable vertex array (VAO, if supported)
-	rlEnableVertexBuffer         :: proc(id: c.uint) ---            // Enable vertex buffer (VBO)
-	rlDisableVertexBuffer        :: proc() ---                      // Disable vertex buffer (VBO)
-	rlEnableVertexBufferElement  :: proc(id: c.uint) ---            // Enable vertex buffer element (VBO element)
-	rlDisableVertexBufferElement :: proc() ---                      // Disable vertex buffer element (VBO element)
-	rlEnableVertexAttribute      :: proc(index: c.uint) ---         // Enable vertex attribute index
-	rlDisableVertexAttribute     :: proc(index: c.uint) ---         // Disable vertex attribute index
-	when RL_GRAPHICS_API_OPENGL_11 {
-		rlEnableStatePointer :: proc(vertexAttribType: c.int, buffer: rawptr) ---
-		rlDisableStatePointer :: proc(vertexAttribType: c.int) ---
-	}
-
-	// Textures state
-	rlActiveTextureSlot     :: proc(slot: c.int) ---                            // Select and active a texture slot
-	rlEnableTexture         :: proc(id: c.uint) ---                             // Enable texture
-	rlDisableTexture        :: proc() ---                                       // Disable texture
-	rlEnableTextureCubemap  :: proc(id: c.uint) ---                             // Enable texture cubemap
-	rlDisableTextureCubemap :: proc() ---                                       // Disable texture cubemap
-	rlTextureParameters     :: proc(id: c.uint, param: c.int, value: c.int) --- // Set texture parameters (filter, wrap)
-	rlCubemapParameters     :: proc(id: i32, param: c.int, value: c.int) ---    // Set cubemap parameters (filter, wrap)
-
-	// Shader state
-	rlEnableShader  :: proc(id: c.uint) ---                                       // Enable shader program
-	rlDisableShader :: proc() ---                                                 // Disable shader program
-
-	// Framebuffer state
-	rlEnableFramebuffer  :: proc(id: c.uint) ---                                  // Enable render texture (fbo)
-	rlDisableFramebuffer :: proc() ---                                            // Disable render texture (fbo), return to default framebuffer
-	rlActiveDrawBuffers  :: proc(count: c.int) ---                                // Activate multiple draw color buffers
-	rlBlitFramebuffer	 :: proc(srcX, srcY, srcWidth, srcHeight, dstX, dstY, dstWidth, dstHeight, bufferMask: c.int) --- // Blit active framebuffer to main framebuffer
-
-	// General render state
-	rlDisableColorBlend      :: proc() ---                           // Disable color blending
-	rlEnableDepthTest        :: proc() ---                           // Enable depth test
-	rlDisableDepthTest       :: proc() ---                           // Disable depth test
-	rlEnableDepthMask        :: proc() ---                           // Enable depth write
-	rlDisableDepthMask       :: proc() ---                           // Disable depth write
-	rlEnableBackfaceCulling  :: proc() ---                           // Enable backface culling
-	rlDisableBackfaceCulling :: proc() ---                           // Disable backface culling
-	rlSetCullFace            :: proc(mode: CullMode) ---             // Set face culling mode
-	rlEnableScissorTest      :: proc() ---                           // Enable scissor test
-	rlDisableScissorTest     :: proc() ---                           // Disable scissor test
-	rlScissor                :: proc(x, y, width, height: c.int) --- // Scissor test
-	rlEnableWireMode         :: proc() ---                           // Enable wire mode
-	rlEnablePointMode        :: proc() --- 							 // Enable point mode
-	rlDisableWireMode        :: proc() ---                           // Disable wire and point modes
-	rlSetLineWidth           :: proc(width: f32) ---                 // Set the line drawing width
-	rlGetLineWidth           :: proc() -> f32 ---                    // Get the line drawing width
-	rlEnableSmoothLines      :: proc() ---                           // Enable line aliasing
-	rlDisableSmoothLines     :: proc() ---                           // Disable line aliasing
-	rlEnableStereoRender     :: proc() ---                           // Enable stereo rendering
-	rlDisableStereoRender    :: proc() ---                           // Disable stereo rendering
-	rlIsStereoRenderEnabled  :: proc() -> bool ---                   // Check if stereo render is enabled
-
-
-	rlClearColor              :: proc(r, g, b, a: u8) ---                                                        // Clear color buffer with color
-	rlClearScreenBuffers      :: proc() ---                                                                      // Clear used screen buffers (color and depth)
-	rlCheckErrors             :: proc() ---                                                                      // Check and log OpenGL error codes
-	rlSetBlendMode            :: proc(mode: c.int) ---                                                           // Set blending mode
-	rlSetBlendFactors         :: proc(glSrcFactor, glDstFactor, glEquation: c.int) ---                           // Set blending mode factor and equation (using OpenGL factors)
-	rlSetBlendFactorsSeparate :: proc(glSrcRGB, glDstRGB, glSrcAlpha, glDstAlpha, glEqRGB, glEqAlpha: c.int) --- // Set blending mode factors and equations separately (using OpenGL factors)
-
-	//------------------------------------------------------------------------------------
-	// Functions Declaration - rlgl functionality
-	//------------------------------------------------------------------------------------
-	// rlgl initialization functions
-	rlglInit               :: proc(width, height: c.int) --- // Initialize rlgl (buffers, shaders, textures, states)
-	rlglClose              :: proc() ---                     // De-initialize rlgl (buffers, shaders, textures)
-	rlLoadExtensions       :: proc(loader: rawptr) ---       // Load OpenGL extensions (loader function required)
-	rlGetVersion           :: proc() -> GlVersion ---        // Get current OpenGL version
-	rlSetFramebufferWidth  :: proc(width: c.int) ---         // Set current framebuffer width
-	rlGetFramebufferWidth  :: proc() -> c.int ---            // Get default framebuffer width
-	rlSetFramebufferHeight :: proc(height: c.int) ---        // Set current framebuffer height
-	rlGetFramebufferHeight :: proc() -> c.int ---            // Get default framebuffer height
-
-
-	rlGetTextureIdDefault  :: proc() -> c.uint ---   // Get default texture id
-	rlGetShaderIdDefault   :: proc() -> c.uint ---   // Get default shader id
-	rlGetShaderLocsDefault :: proc() -> [^]c.int --- // Get default shader locations
-
-	// Render batch management
-	// NOTE: rlgl provides a default render batch to behave like OpenGL 1.1 immediate mode
-	// but this render batch API is exposed in case of custom batches are required
-	rlLoadRenderBatch       :: proc(numBuffers, bufferElements: c.int) -> RenderBatch --- // Load a render batch system
-	rlUnloadRenderBatch     :: proc(batch: RenderBatch) ---                               // Unload render batch system
-	rlDrawRenderBatch       :: proc(batch: ^RenderBatch) ---                              // Draw render batch data (Update->Draw->Reset)
-	rlSetRenderBatchActive  :: proc(batch: ^RenderBatch) ---                              // Set the active render batch for rlgl (NULL for default internal)
-	rlDrawRenderBatchActive :: proc() ---                                                 // Update and draw internal render batch
-	rlCheckRenderBatchLimit :: proc(vCount: c.int) -> c.int ---                           // Check internal buffer overflow for a given number of vertex
-
-	rlSetTexture :: proc(id: c.uint) --- // Set current texture for render batch and check buffers limits
-
-	//------------------------------------------------------------------------------------------------------------------------
-
-	// Vertex buffers management
-	rlLoadVertexArray                  :: proc() -> c.uint ---                                                      // Load vertex array (vao) if supported
-	rlLoadVertexBuffer                 :: proc(buffer: rawptr, size: c.int, is_dynamic: bool) -> c.uint ---         // Load a vertex buffer attribute
-	rlLoadVertexBufferElement          :: proc(buffer: rawptr, size: c.int, is_dynamic: bool) -> c.uint ---         // Load a new attributes element buffer
-	rlUpdateVertexBuffer               :: proc(bufferId: c.uint, data: rawptr, dataSize: c.int, offset: c.int) ---  // Update GPU buffer with new data
-	rlUpdateVertexBufferElements       :: proc(id: c.uint, data: rawptr, dataSize: c.int, offset: c.int) ---        // Update vertex buffer elements with new data
-	rlUnloadVertexArray                :: proc(vaoId: c.uint) ---
-	rlUnloadVertexBuffer               :: proc(vboId: c.uint) ---
-	rlSetVertexAttribute               :: proc(index: c.uint, compSize: c.int, type: c.int, normalized: bool, stride: c.int, pointer: rawptr) ---
-	rlSetVertexAttributeDivisor        :: proc(index: c.uint, divisor: c.int) ---
-	rlSetVertexAttributeDefault        :: proc(locIndex: c.int, value: rawptr, attribType: c.int, count: c.int) --- // Set vertex attribute default value
-	rlDrawVertexArray                  :: proc(offset: c.int, count: c.int) ---
-	rlDrawVertexArrayElements          :: proc(offset: c.int, count: c.int, buffer: rawptr) ---
-	rlDrawVertexArrayInstanced         :: proc(offset: c.int, count: c.int, instances: c.int) ---
-	rlDrawVertexArrayElementsInstanced :: proc(offset: c.int, count: c.int, buffer: rawptr, instances: c.int) ---
-
-	// Textures management
-	rlLoadTexture         :: proc(data: rawptr, width, height: c.int, format: c.int, mipmapCount: c.int) -> c.uint ---        // Load texture in GPU
-	rlLoadTextureDepth    :: proc(width, height: c.int, useRenderBuffer: bool) -> c.uint ---                                  // Load depth texture/renderbuffer (to be attached to fbo)
-	rlLoadTextureCubemap  :: proc(data: rawptr, size: c.int, format: c.int) -> c.uint ---                                     // Load texture cubemap
-	rlUpdateTexture       :: proc(id: c.uint, offsetX, offsetY: c.int, width, height: c.int, format: c.int, data: rawptr) --- // Update GPU texture with new data
-	rlGetGlTextureFormats :: proc(format: c.int, glInternalFormat, glFormat, glType: ^c.uint) ---                             // Get OpenGL internal formats
-	rlGetPixelFormatName  :: proc(format: c.uint) -> cstring ---                                                              // Get name string for pixel format
-	rlUnloadTexture       :: proc(id: c.uint) ---                                                                             // Unload texture from GPU memory
-	rlGenTextureMipmaps   :: proc(id: c.uint, width, height: c.int, format: c.int, mipmaps: ^c.int) ---                       // Generate mipmap data for selected texture
-	rlReadTexturePixels   :: proc(id: c.uint, width, height: c.int, format: c.int) -> rawptr ---                              // Read texture pixel data
-	rlReadScreenPixels    :: proc(width, height: c.int) -> [^]byte ---                                                        // Read screen pixel data (color buffer)
-
-	// Framebuffer management (fbo)
-	rlLoadFramebuffer     :: proc(width, height: c.int) -> c.uint ---                                           // Load an empty framebuffer
-	rlFramebufferAttach   :: proc(fboId, texId: c.uint, attachType: c.int, texType: c.int, mipLevel: c.int) --- // Attach texture/renderbuffer to a framebuffer
-	rlFramebufferComplete :: proc(id: c.uint) -> bool ---                                                       // Verify framebuffer is complete
-	rlUnloadFramebuffer   :: proc(id: c.uint) ---                                                               // Delete framebuffer from GPU
-
-	// Shaders management
-	rlLoadShaderCode      :: proc(vsCode, fsCode: cstring) -> c.uint ---                                // Load shader from code strings
-	rlCompileShader       :: proc(shaderCode: cstring, type: c.int) -> c.uint ---                       // Compile custom shader and return shader id (type: RL_VERTEX_SHADER, RL_FRAGMENT_SHADER, RL_COMPUTE_SHADER)
-	rlLoadShaderProgram   :: proc(vShaderId, fShaderId: c.uint) -> c.uint ---                           // Load custom shader program
-	rlUnloadShaderProgram :: proc(id: c.uint) ---                                                       // Unload shader program
-	rlGetLocationUniform  :: proc(shaderId: c.uint, uniformName: cstring) -> c.int ---                  // Get shader location uniform
-	rlGetLocationAttrib   :: proc(shaderId: c.uint, attribName: cstring) -> c.int ---                   // Get shader location attribute
-	rlSetUniform          :: proc(locIndex: c.int, value: rawptr, uniformType: c.int, count: c.int) --- // Set shader value uniform
-	rlSetUniformMatrix    :: proc(locIndex: c.int, mat: Matrix) ---                                     // Set shader value matrix
-	rlSetUniformSampler   :: proc(locIndex: c.int, textureId: c.uint) ---                               // Set shader value sampler
-	rlSetShader           :: proc(id: c.uint, locs: [^]c.int) ---                                       // Set shader currently active (id and locations)
-
-	// Compute shader management
-	rlLoadComputeShaderProgram :: proc(shaderId: c.uint) -> c.uint ---     // Load compute shader program
-	rlComputeShaderDispatch    :: proc(groupX, groupY, groupZ: c.uint) --- // Dispatch compute shader (equivalent to *draw* for graphics pipeline)
-
-	// Shader buffer storage object management (ssbo)
-	rlLoadShaderBuffer    :: proc(size: c.uint, data: rawptr, usageHint: c.int) -> c.uint ---              // Load shader storage buffer object (SSBO)
-	rlUnloadShaderBuffer  :: proc(ssboId: c.uint) ---                                                      // Unload shader storage buffer object (SSBO)
-	rlUpdateShaderBuffer  :: proc(id: c.uint, data: rawptr, dataSize: c.uint, offset: c.uint) ---          // Update SSBO buffer data
-	rlBindShaderBuffer    :: proc(id: c.uint, index: c.uint) ---                                           // Bind SSBO buffer
-	rlReadShaderBuffer    :: proc(id: c.uint, dest: rawptr, count: c.uint, offset: c.uint) ---             // Read SSBO buffer data (GPU->CPU)
-	rlCopyShaderBuffer    :: proc(destId, srcId: c.uint, destOffset, srcOffset: c.uint, count: c.uint) --- // Copy SSBO data between buffers
-	rlGetShaderBufferSize :: proc(id: c.uint) -> c.uint ---                                                // Get SSBO buffer size
-
-	// Buffer management
-	rlBindImageTexture :: proc(id: c.uint, index: c.uint, format: c.int, readonly: bool) ---  // Bind image texture
-
-	// Matrix state management
-	rlGetMatrixModelview        :: proc() -> Matrix ---           // Get internal modelview matrix
-	rlGetMatrixProjection       :: proc() -> Matrix ---           // Get internal projection matrix
-	rlGetMatrixTransform        :: proc() -> Matrix ---           // Get internal accumulated transform matrix
-	rlGetMatrixProjectionStereo :: proc(eye: c.int) -> Matrix --- // Get internal projection matrix for stereo render (selected eye)
-	rlGetMatrixViewOffsetStereo :: proc(eye: c.int) -> Matrix --- // Get internal view offset matrix for stereo render (selected eye)
-	rlSetMatrixProjection       :: proc(proj: Matrix) ---         // Set a custom projection matrix (replaces internal projection matrix)
-	rlSetMatrixModelview        :: proc(view: Matrix) ---         // Set a custom modelview matrix (replaces internal modelview matrix)
-	rlSetMatrixProjectionStereo :: proc(right, left: Matrix) ---  // Set eyes projection matrices for stereo rendering
-	rlSetMatrixViewOffsetStereo :: proc(right, left: Matrix) ---  // Set eyes view offsets matrices for stereo rendering
-
-	// Quick and dirty cube/quad buffers load->draw->unload
-	rlLoadDrawCube :: proc() --- // Load and draw a cube
-	rlLoadDrawQuad :: proc() --- // Load and draw a quad
-}

vendor/raylib/rlgl/rlgl.odin

@@ -0,0 +1,560 @@
+/**********************************************************************************************
+*
+*   rlgl v5.0 - A multi-OpenGL abstraction layer with an immediate-mode style API
+*
+*   DESCRIPTION:
+*       An abstraction layer for multiple OpenGL versions (1.1, 2.1, 3.3 Core, 4.3 Core, ES 2.0)
+*       that provides a pseudo-OpenGL 1.1 immediate-mode style API (rlVertex, rlTranslate, rlRotate...)
+*
+*   ADDITIONAL NOTES:
+*       When choosing an OpenGL backend different than OpenGL 1.1, some internal buffer are
+*       initialized on rlglInit() to accumulate vertex data.
+*
+*       When an internal state change is required all the stored vertex data is renderer in batch,
+*       additionally, rlDrawRenderBatchActive() could be called to force flushing of the batch.
+*
+*       Some resources are also loaded for convenience, here the complete list:
+*          - Default batch (RLGL.defaultBatch): RenderBatch system to accumulate vertex data
+*          - Default texture (RLGL.defaultTextureId): 1x1 white pixel R8G8B8A8
+*          - Default shader (RLGL.State.defaultShaderId, RLGL.State.defaultShaderLocs)
+*
+*       Internal buffer (and resources) must be manually unloaded calling rlglClose().
+*
+*   CONFIGURATION:
+*       #define GRAPHICS_API_OPENGL_11
+*       #define GRAPHICS_API_OPENGL_21
+*       #define GRAPHICS_API_OPENGL_33
+*       #define GRAPHICS_API_OPENGL_43
+*       #define GRAPHICS_API_OPENGL_ES2
+*       #define GRAPHICS_API_OPENGL_ES3
+*           Use selected OpenGL graphics backend, should be supported by platform
+*           Those preprocessor defines are only used on rlgl module, if OpenGL version is
+*           required by any other module, use rlGetVersion() to check it
+*
+*       #define RLGL_IMPLEMENTATION
+*           Generates the implementation of the library into the included file.
+*           If not defined, the library is in header only mode and can be included in other headers
+*           or source files without problems. But only ONE file should hold the implementation.
+*
+*       #define RLGL_RENDER_TEXTURES_HINT
+*           Enable framebuffer objects (fbo) support (enabled by default)
+*           Some GPUs could not support them despite the OpenGL version
+*
+*       #define RLGL_SHOW_GL_DETAILS_INFO
+*           Show OpenGL extensions and capabilities detailed logs on init
+*
+*       #define RLGL_ENABLE_OPENGL_DEBUG_CONTEXT
+*           Enable debug context (only available on OpenGL 4.3)
+*
+*       rlgl capabilities could be customized just defining some internal
+*       values before library inclusion (default values listed):
+*
+*       #define RL_DEFAULT_BATCH_BUFFER_ELEMENTS   8192    // Default internal render batch elements limits
+*       #define RL_DEFAULT_BATCH_BUFFERS              1    // Default number of batch buffers (multi-buffering)
+*       #define RL_DEFAULT_BATCH_DRAWCALLS          256    // Default number of batch draw calls (by state changes: mode, texture)
+*       #define RL_DEFAULT_BATCH_MAX_TEXTURE_UNITS    4    // Maximum number of textures units that can be activated on batch drawing (SetShaderValueTexture())
+*
+*       #define RL_MAX_MATRIX_STACK_SIZE             32    // Maximum size of internal Matrix stack
+*       #define RL_MAX_SHADER_LOCATIONS              32    // Maximum number of shader locations supported
+*       #define RL_CULL_DISTANCE_NEAR              0.01    // Default projection matrix near cull distance
+*       #define RL_CULL_DISTANCE_FAR             1000.0    // Default projection matrix far cull distance
+*
+*       When loading a shader, the following vertex attributes and uniform
+*       location names are tried to be set automatically:
+*
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_POSITION     "vertexPosition"    // Bound by default to shader location: 0
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD     "vertexTexCoord"    // Bound by default to shader location: 1
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_NORMAL       "vertexNormal"      // Bound by default to shader location: 2
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_COLOR        "vertexColor"       // Bound by default to shader location: 3
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TANGENT      "vertexTangent"     // Bound by default to shader location: 4
+*       #define RL_DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2    "vertexTexCoord2"   // Bound by default to shader location: 5
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_MVP         "mvp"               // model-view-projection matrix
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_VIEW        "matView"           // view matrix
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_PROJECTION  "matProjection"     // projection matrix
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_MODEL       "matModel"          // model matrix
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_NORMAL      "matNormal"         // normal matrix (transpose(inverse(matModelView))
+*       #define RL_DEFAULT_SHADER_UNIFORM_NAME_COLOR       "colDiffuse"        // color diffuse (base tint color, multiplied by texture color)
+*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE0  "texture0"          // texture0 (texture slot active 0)
+*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE1  "texture1"          // texture1 (texture slot active 1)
+*       #define RL_DEFAULT_SHADER_SAMPLER2D_NAME_TEXTURE2  "texture2"          // texture2 (texture slot active 2)
+*
+*   DEPENDENCIES:
+*      - OpenGL libraries (depending on platform and OpenGL version selected)
+*      - GLAD OpenGL extensions loading library (only for OpenGL 3.3 Core, 4.3 Core)
+*
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2014-2023 Ramon Santamaria (@raysan5)
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+
+package rlgl
+
+import "core:c"
+
+VERSION :: "5.0"
+
+when ODIN_OS == .Windows {
+	foreign import lib {
+		"../windows/raylib.lib",
+		"system:Winmm.lib",
+		"system:Gdi32.lib",
+		"system:User32.lib",
+		"system:Shell32.lib",
+	}
+} else when ODIN_OS == .Linux  {
+	foreign import lib "../linux/libraylib.a"
+} else when ODIN_OS == .Darwin {
+	foreign import lib {
+		"../macos-arm64/libraylib.a" when ODIN_ARCH == .arm64 else "../macos/libraylib.a",
+		"system:Cocoa.framework",
+		"system:OpenGL.framework",
+		"system:IOKit.framework",
+	}
+} else {
+	foreign import lib "system:raylib"
+}
+
+GRAPHICS_API_OPENGL_11  :: false
+GRAPHICS_API_OPENGL_21  :: true
+GRAPHICS_API_OPENGL_33  :: GRAPHICS_API_OPENGL_21 // default currently
+GRAPHICS_API_OPENGL_ES2 :: false
+GRAPHICS_API_OPENGL_43  :: false
+GRAPHICS_API_OPENGL_ES3 :: false
+
+when GRAPHICS_API_OPENGL_ES3 {
+	GRAPHICS_API_OPENGL_ES2 :: true
+}
+ 
+when !GRAPHICS_API_OPENGL_ES2 {
+	// This is the maximum amount of elements (quads) per batch
+	// NOTE: Be careful with text, every letter maps to a quad
+	DEFAULT_BATCH_BUFFER_ELEMENTS :: 8192
+} else {
+	// We reduce memory sizes for embedded systems (RPI and HTML5)
+	// NOTE: On HTML5 (emscripten) this is allocated on heap,
+	// by default it's only 16MB!...just take care...
+	DEFAULT_BATCH_BUFFER_ELEMENTS :: 2048
+}
+
+DEFAULT_BATCH_BUFFERS            :: 1                    // Default number of batch buffers (multi-buffering)
+DEFAULT_BATCH_DRAWCALLS          :: 256                  // Default number of batch draw calls (by state changes: mode, texture)
+DEFAULT_BATCH_MAX_TEXTURE_UNITS  :: 4                    // Maximum number of additional textures that can be activated on batch drawing (SetShaderValueTexture())
+
+// Internal Matrix stack
+MAX_MATRIX_STACK_SIZE          :: 32                   // Maximum size of Matrix stack
+
+// Shader limits
+MAX_SHADER_LOCATIONS           :: 32                   // Maximum number of shader locations supported
+
+// Projection matrix culling
+CULL_DISTANCE_NEAR          :: 0.01                 // Default near cull distance
+CULL_DISTANCE_FAR           :: 1000.0               // Default far cull distance
+
+// Texture parameters (equivalent to OpenGL defines)
+TEXTURE_WRAP_S                       :: 0x2802      // GL_TEXTURE_WRAP_S
+TEXTURE_WRAP_T                       :: 0x2803      // GL_TEXTURE_WRAP_T
+TEXTURE_MAG_FILTER                   :: 0x2800      // GL_TEXTURE_MAG_FILTER
+TEXTURE_MIN_FILTER                   :: 0x2801      // GL_TEXTURE_MIN_FILTER
+
+TEXTURE_FILTER_NEAREST               :: 0x2600      // GL_NEAREST
+TEXTURE_FILTER_LINEAR                :: 0x2601      // GL_LINEAR
+TEXTURE_FILTER_MIP_NEAREST           :: 0x2700      // GL_NEAREST_MIPMAP_NEAREST
+TEXTURE_FILTER_NEAREST_MIP_LINEAR    :: 0x2702      // GL_NEAREST_MIPMAP_LINEAR
+TEXTURE_FILTER_LINEAR_MIP_NEAREST    :: 0x2701      // GL_LINEAR_MIPMAP_NEAREST
+TEXTURE_FILTER_MIP_LINEAR            :: 0x2703      // GL_LINEAR_MIPMAP_LINEAR
+TEXTURE_FILTER_ANISOTROPIC           :: 0x3000      // Anisotropic filter (custom identifier)
+
+TEXTURE_WRAP_REPEAT                  :: 0x2901      // GL_REPEAT
+TEXTURE_WRAP_CLAMP                   :: 0x812F      // GL_CLAMP_TO_EDGE
+TEXTURE_WRAP_MIRROR_REPEAT           :: 0x8370      // GL_MIRRORED_REPEAT
+TEXTURE_WRAP_MIRROR_CLAMP            :: 0x8742      // GL_MIRROR_CLAMP_EXT
+
+// Matrix modes (equivalent to OpenGL)
+MODELVIEW                            :: 0x1700      // GL_MODELVIEW
+PROJECTION                           :: 0x1701      // GL_PROJECTION
+TEXTURE                              :: 0x1702      // GL_TEXTURE
+
+// Primitive assembly draw modes
+LINES                                :: 0x0001      // GL_LINES
+TRIANGLES                            :: 0x0004      // GL_TRIANGLES
+QUADS                                :: 0x0007      // GL_QUADS
+
+// GL equivalent data types
+UNSIGNED_BYTE                        :: 0x1401      // GL_UNSIGNED_BYTE
+FLOAT                                :: 0x1406      // GL_FLOAT
+
+// Buffer usage hint
+STREAM_DRAW                          :: 0x88E0      // GL_STREAM_DRAW
+STREAM_READ                          :: 0x88E1      // GL_STREAM_READ
+STREAM_COPY                          :: 0x88E2      // GL_STREAM_COPY
+STATIC_DRAW                          :: 0x88E4      // GL_STATIC_DRAW
+STATIC_READ                          :: 0x88E5      // GL_STATIC_READ
+STATIC_COPY                          :: 0x88E6      // GL_STATIC_COPY
+DYNAMIC_DRAW                         :: 0x88E8      // GL_DYNAMIC_DRAW
+DYNAMIC_READ                         :: 0x88E9      // GL_DYNAMIC_READ
+DYNAMIC_COPY                         :: 0x88EA      // GL_DYNAMIC_COPY
+
+// GL Shader type
+FRAGMENT_SHADER                      :: 0x8B30      // GL_FRAGMENT_SHADER
+VERTEX_SHADER                        :: 0x8B31      // GL_VERTEX_SHADER
+COMPUTE_SHADER                       :: 0x91B9      // GL_COMPUTE_SHADER
+
+// GL blending factors
+ZERO                                 :: 0           // GL_ZERO
+ONE                                  :: 1           // GL_ONE
+SRC_COLOR                            :: 0x0300      // GL_SRC_COLOR
+ONE_MINUS_SRC_COLOR                  :: 0x0301      // GL_ONE_MINUS_SRC_COLOR
+SRC_ALPHA                            :: 0x0302      // GL_SRC_ALPHA
+ONE_MINUS_SRC_ALPHA                  :: 0x0303      // GL_ONE_MINUS_SRC_ALPHA
+DST_ALPHA                            :: 0x0304      // GL_DST_ALPHA
+ONE_MINUS_DST_ALPHA                  :: 0x0305      // GL_ONE_MINUS_DST_ALPHA
+DST_COLOR                            :: 0x0306      // GL_DST_COLOR
+ONE_MINUS_DST_COLOR                  :: 0x0307      // GL_ONE_MINUS_DST_COLOR
+SRC_ALPHA_SATURATE                   :: 0x0308      // GL_SRC_ALPHA_SATURATE
+CONSTANT_COLOR                       :: 0x8001      // GL_CONSTANT_COLOR
+ONE_MINUS_CONSTANT_COLOR             :: 0x8002      // GL_ONE_MINUS_CONSTANT_COLOR
+CONSTANT_ALPHA                       :: 0x8003      // GL_CONSTANT_ALPHA
+ONE_MINUS_CONSTANT_ALPHA             :: 0x8004      // GL_ONE_MINUS_CONSTANT_ALPHA
+
+// GL blending functions/equations
+FUNC_ADD                             :: 0x8006      // GL_FUNC_ADD
+MIN                                  :: 0x8007      // GL_MIN
+MAX                                  :: 0x8008      // GL_MAX
+FUNC_SUBTRACT                        :: 0x800A      // GL_FUNC_SUBTRACT
+FUNC_REVERSE_SUBTRACT                :: 0x800B      // GL_FUNC_REVERSE_SUBTRACT
+BLEND_EQUATION                       :: 0x8009      // GL_BLEND_EQUATION
+BLEND_EQUATION_RGB                   :: 0x8009      // GL_BLEND_EQUATION_RGB   // (Same as BLEND_EQUATION)
+BLEND_EQUATION_ALPHA                 :: 0x883D      // GL_BLEND_EQUATION_ALPHA
+BLEND_DST_RGB                        :: 0x80C8      // GL_BLEND_DST_RGB
+BLEND_SRC_RGB                        :: 0x80C9      // GL_BLEND_SRC_RGB
+BLEND_DST_ALPHA                      :: 0x80CA      // GL_BLEND_DST_ALPHA
+BLEND_SRC_ALPHA                      :: 0x80CB      // GL_BLEND_SRC_ALPHA
+BLEND_COLOR                          :: 0x8005      // GL_BLEND_COLOR
+
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+
+
+VertexBufferIndexType :: c.ushort when GRAPHICS_API_OPENGL_ES2 else c.uint
+
+// Dynamic vertex buffers (position + texcoords + colors + indices arrays)
+VertexBuffer :: struct {
+	elementCount: c.int,                 // Number of elements in the buffer (QUADS)
+
+	vertices:  [^]f32,                   // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
+	texcoords: [^]f32,                   // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
+	colors:    [^]u8,                    // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
+	indices:   [^]VertexBufferIndexType, // Vertex indices (in case vertex data comes indexed) (6 indices per quad)
+	vaoId:     c.uint,                   // OpenGL Vertex Array Object id
+	vboId:     [4]c.uint,                // OpenGL Vertex Buffer Objects id (4 types of vertex data)
+}
+
+// Draw call type
+// NOTE: Only texture changes register a new draw, other state-change-related elements are not
+// used at this moment (vaoId, shaderId, matrices), raylib just forces a batch draw call if any
+// of those state-change happens (this is done in core module)
+DrawCall :: struct {
+	mode:            c.int,        // Drawing mode: LINES, TRIANGLES, QUADS
+	vertexCount:     c.int,        // Number of vertex of the draw
+	vertexAlignment: c.int,        // Number of vertex required for index alignment (LINES, TRIANGLES)
+	textureId:       c.uint,       // Texture id to be used on the draw -> Use to create new draw call if changes
+}
+
+// RenderBatch type
+RenderBatch :: struct {
+	bufferCount:   c.int,           // Number of vertex buffers (multi-buffering support)
+	currentBuffer: c.int,           // Current buffer tracking in case of multi-buffering
+	vertexBuffer:  [^]VertexBuffer, // Dynamic buffer(s) for vertex data
+
+	draws:         [^]DrawCall,     // Draw calls array, depends on textureId
+	drawCounter:   c.int,           // Draw calls counter
+	currentDepth:  f32,             // Current depth value for next draw
+}
+
+
+// OpenGL version
+GlVersion :: enum c.int {
+	OPENGL_11 = 1,           // OpenGL 1.1
+	OPENGL_21,               // OpenGL 2.1 (GLSL 120)
+	OPENGL_33,               // OpenGL 3.3 (GLSL 330)
+	OPENGL_43,               // OpenGL 4.3 (using GLSL 330)
+	OPENGL_ES_20,            // OpenGL ES 2.0 (GLSL 100)
+	OPENGL_ES_30,            // OpenGL ES 3.0 (GLSL 300 es)
+}
+
+
+// Shader attribute data types
+ShaderAttributeDataType :: enum c.int {
+	FLOAT = 0,         // Shader attribute type: float
+	VEC2,              // Shader attribute type: vec2 (2 float)
+	VEC3,              // Shader attribute type: vec3 (3 float)
+	VEC4,              // Shader attribute type: vec4 (4 float)
+}
+
+// Framebuffer attachment type
+// NOTE: By default up to 8 color channels defined, but it can be more
+FramebufferAttachType :: enum c.int {
+	COLOR_CHANNEL0 = 0,   // Framebuffer attachment type: color 0
+	COLOR_CHANNEL1 = 1,   // Framebuffer attachment type: color 1
+	COLOR_CHANNEL2 = 2,   // Framebuffer attachment type: color 2
+	COLOR_CHANNEL3 = 3,   // Framebuffer attachment type: color 3
+	COLOR_CHANNEL4 = 4,   // Framebuffer attachment type: color 4
+	COLOR_CHANNEL5 = 5,   // Framebuffer attachment type: color 5
+	COLOR_CHANNEL6 = 6,   // Framebuffer attachment type: color 6
+	COLOR_CHANNEL7 = 7,   // Framebuffer attachment type: color 7
+	DEPTH = 100,          // Framebuffer attachment type: depth
+	STENCIL = 200,        // Framebuffer attachment type: stencil
+}
+
+// Framebuffer texture attachment type
+FramebufferAttachTextureType :: enum c.int {
+	CUBEMAP_POSITIVE_X = 0, // Framebuffer texture attachment type: cubemap, +X side
+	CUBEMAP_NEGATIVE_X = 1, // Framebuffer texture attachment type: cubemap, -X side
+	CUBEMAP_POSITIVE_Y = 2, // Framebuffer texture attachment type: cubemap, +Y side
+	CUBEMAP_NEGATIVE_Y = 3, // Framebuffer texture attachment type: cubemap, -Y side
+	CUBEMAP_POSITIVE_Z = 4, // Framebuffer texture attachment type: cubemap, +Z side
+	CUBEMAP_NEGATIVE_Z = 5, // Framebuffer texture attachment type: cubemap, -Z side
+	TEXTURE2D = 100,        // Framebuffer texture attachment type: texture2d
+	RENDERBUFFER = 200,     // Framebuffer texture attachment type: renderbuffer
+}
+
+CullMode :: enum c.int {
+	FRONT = 0,
+	BACK,
+}
+
+// Matrix type (right handed, stored row major)
+Matrix :: #row_major matrix[4, 4]f32
+
+@(default_calling_convention="c", link_prefix="rl")
+foreign lib {
+	//------------------------------------------------------------------------------------
+	// Functions Declaration - Matrix operations
+	//------------------------------------------------------------------------------------
+	MatrixMode   :: proc(mode: c.int) ---                 // Choose the current matrix to be transformed
+	PushMatrix   :: proc() ---                            // Push the current matrix to stack
+	PopMatrix    :: proc() ---                            // Pop lattest inserted matrix from stack
+	LoadIdentity :: proc() ---                            // Reset current matrix to identity matrix
+	Translatef   :: proc(x, y, z: f32) ---                // Multiply the current matrix by a translation matrix
+	Rotatef      :: proc(angleDeg: f32, x, y, z: f32) --- // Multiply the current matrix by a rotation matrix
+	Scalef       :: proc(x, y, z: f32) ---                // Multiply the current matrix by a scaling matrix
+	MultMatrixf  :: proc(matf: [^]f32) ---                // Multiply the current matrix by another matrix
+	Frustum      :: proc(left, right, bottom, top, znear, zfar: f64) ---
+	Ortho        :: proc(left, right, bottom, top, znear, zfar: f64) ---
+	Viewport     :: proc(x, y, width, height: c.int) ---  // Set the viewport area
+
+	//------------------------------------------------------------------------------------
+	// Functions Declaration - Vertex level operations
+	//------------------------------------------------------------------------------------
+	Begin        :: proc(mode: c.int)     --- // Initialize drawing mode (how to organize vertex)
+	End          :: proc()                --- // Finish vertex providing
+	Vertex2i     :: proc(x, y: c.int)     --- // Define one vertex (position) - 2 int
+	Vertex2f     :: proc(x, y: f32)       --- // Define one vertex (position) - 2 f32
+	Vertex3f     :: proc(x, y, z: f32)    --- // Define one vertex (position) - 3 f32
+	TexCoord2f   :: proc(x, y: f32)       --- // Define one vertex (texture coordinate) - 2 f32
+	Normal3f     :: proc(x, y, z: f32)    --- // Define one vertex (normal) - 3 f32
+	Color4ub     :: proc(r, g, b, a: u8)  --- // Define one vertex (color) - 4 byte
+	Color3f      :: proc(x, y, z: f32)    --- // Define one vertex (color) - 3 f32
+	Color4f      :: proc(x, y, z, w: f32) --- // Define one vertex (color) - 4 f32
+
+	//------------------------------------------------------------------------------------
+	// Functions Declaration - OpenGL style functions (common to 1.1, 3.3+, ES2)
+	// NOTE: This functions are used to completely abstract raylib code from OpenGL layer,
+	// some of them are direct wrappers over OpenGL calls, some others are custom
+	//------------------------------------------------------------------------------------
+
+	// Vertex buffers state
+	EnableVertexArray          :: proc(vaoId: c.uint) -> bool --- // Enable vertex array (VAO, if supported)
+	DisableVertexArray         :: proc() ---                      // Disable vertex array (VAO, if supported)
+	EnableVertexBuffer         :: proc(id: c.uint) ---            // Enable vertex buffer (VBO)
+	DisableVertexBuffer        :: proc() ---                      // Disable vertex buffer (VBO)
+	EnableVertexBufferElement  :: proc(id: c.uint) ---            // Enable vertex buffer element (VBO element)
+	DisableVertexBufferElement :: proc() ---                      // Disable vertex buffer element (VBO element)
+	EnableVertexAttribute      :: proc(index: c.uint) ---         // Enable vertex attribute index
+	DisableVertexAttribute     :: proc(index: c.uint) ---         // Disable vertex attribute index
+	when GRAPHICS_API_OPENGL_11 {
+		EnableStatePointer :: proc(vertexAttribType: c.int, buffer: rawptr) ---
+		DisableStatePointer :: proc(vertexAttribType: c.int) ---
+	}
+
+	// Textures state
+	ActiveTextureSlot     :: proc(slot: c.int) ---                            // Select and active a texture slot
+	EnableTexture         :: proc(id: c.uint) ---                             // Enable texture
+	DisableTexture        :: proc() ---                                       // Disable texture
+	EnableTextureCubemap  :: proc(id: c.uint) ---                             // Enable texture cubemap
+	DisableTextureCubemap :: proc() ---                                       // Disable texture cubemap
+	TextureParameters     :: proc(id: c.uint, param: c.int, value: c.int) --- // Set texture parameters (filter, wrap)
+	CubemapParameters     :: proc(id: i32, param: c.int, value: c.int) ---    // Set cubemap parameters (filter, wrap)
+
+	// Shader state
+	EnableShader  :: proc(id: c.uint) ---                                       // Enable shader program
+	DisableShader :: proc() ---                                                 // Disable shader program
+
+	// Framebuffer state
+	EnableFramebuffer  :: proc(id: c.uint) ---                                  // Enable render texture (fbo)
+	DisableFramebuffer :: proc() ---                                            // Disable render texture (fbo), return to default framebuffer
+	ActiveDrawBuffers  :: proc(count: c.int) ---                                // Activate multiple draw color buffers
+	BlitFramebuffer	 :: proc(srcX, srcY, srcWidth, srcHeight, dstX, dstY, dstWidth, dstHeight, bufferMask: c.int) --- // Blit active framebuffer to main framebuffer
+
+	// General render state
+	DisableColorBlend      :: proc() ---                           // Disable color blending
+	EnableDepthTest        :: proc() ---                           // Enable depth test
+	DisableDepthTest       :: proc() ---                           // Disable depth test
+	EnableDepthMask        :: proc() ---                           // Enable depth write
+	DisableDepthMask       :: proc() ---                           // Disable depth write
+	EnableBackfaceCulling  :: proc() ---                           // Enable backface culling
+	DisableBackfaceCulling :: proc() ---                           // Disable backface culling
+	SetCullFace            :: proc(mode: CullMode) ---             // Set face culling mode
+	EnableScissorTest      :: proc() ---                           // Enable scissor test
+	DisableScissorTest     :: proc() ---                           // Disable scissor test
+	Scissor                :: proc(x, y, width, height: c.int) --- // Scissor test
+	EnableWireMode         :: proc() ---                           // Enable wire mode
+	EnablePointMode        :: proc() --- 							 // Enable point mode
+	DisableWireMode        :: proc() ---                           // Disable wire and point modes
+	SetLineWidth           :: proc(width: f32) ---                 // Set the line drawing width
+	GetLineWidth           :: proc() -> f32 ---                    // Get the line drawing width
+	EnableSmoothLines      :: proc() ---                           // Enable line aliasing
+	DisableSmoothLines     :: proc() ---                           // Disable line aliasing
+	EnableStereoRender     :: proc() ---                           // Enable stereo rendering
+	DisableStereoRender    :: proc() ---                           // Disable stereo rendering
+	IsStereoRenderEnabled  :: proc() -> bool ---                   // Check if stereo render is enabled
+
+
+	ClearColor              :: proc(r, g, b, a: u8) ---                                                        // Clear color buffer with color
+	ClearScreenBuffers      :: proc() ---                                                                      // Clear used screen buffers (color and depth)
+	CheckErrors             :: proc() ---                                                                      // Check and log OpenGL error codes
+	SetBlendMode            :: proc(mode: c.int) ---                                                           // Set blending mode
+	SetBlendFactors         :: proc(glSrcFactor, glDstFactor, glEquation: c.int) ---                           // Set blending mode factor and equation (using OpenGL factors)
+	SetBlendFactorsSeparate :: proc(glSrcRGB, glDstRGB, glSrcAlpha, glDstAlpha, glEqRGB, glEqAlpha: c.int) --- // Set blending mode factors and equations separately (using OpenGL factors)
+
+	//------------------------------------------------------------------------------------
+	// Functions Declaration - rlgl functionality
+	//------------------------------------------------------------------------------------
+	// rlgl initialization functions
+	@(link_prefix="rlgl")
+	Init                 :: proc(width, height: c.int) --- // Initialize rlgl (buffers, shaders, textures, states)
+	@(link_prefix="rlgl")
+	Close                :: proc() ---                     // De-initialize rlgl (buffers, shaders, textures)
+	LoadExtensions       :: proc(loader: rawptr) ---       // Load OpenGL extensions (loader function required)
+	GetVersion           :: proc() -> GlVersion ---        // Get current OpenGL version
+	SetFramebufferWidth  :: proc(width: c.int) ---         // Set current framebuffer width
+	GetFramebufferWidth  :: proc() -> c.int ---            // Get default framebuffer width
+	SetFramebufferHeight :: proc(height: c.int) ---        // Set current framebuffer height
+	GetFramebufferHeight :: proc() -> c.int ---            // Get default framebuffer height
+
+
+	GetTextureIdDefault  :: proc() -> c.uint ---   // Get default texture id
+	GetShaderIdDefault   :: proc() -> c.uint ---   // Get default shader id
+	GetShaderLocsDefault :: proc() -> [^]c.int --- // Get default shader locations
+
+	// Render batch management
+	// NOTE: rlgl provides a default render batch to behave like OpenGL 1.1 immediate mode
+	// but this render batch API is exposed in case of custom batches are required
+	LoadRenderBatch       :: proc(numBuffers, bufferElements: c.int) -> RenderBatch --- // Load a render batch system
+	UnloadRenderBatch     :: proc(batch: RenderBatch) ---                               // Unload render batch system
+	DrawRenderBatch       :: proc(batch: ^RenderBatch) ---                              // Draw render batch data (Update->Draw->Reset)
+	SetRenderBatchActive  :: proc(batch: ^RenderBatch) ---                              // Set the active render batch for rlgl (NULL for default internal)
+	DrawRenderBatchActive :: proc() ---                                                 // Update and draw internal render batch
+	CheckRenderBatchLimit :: proc(vCount: c.int) -> c.int ---                           // Check internal buffer overflow for a given number of vertex
+
+	SetTexture :: proc(id: c.uint) --- // Set current texture for render batch and check buffers limits
+
+	//------------------------------------------------------------------------------------------------------------------------
+
+	// Vertex buffers management
+	LoadVertexArray                  :: proc() -> c.uint ---                                                      // Load vertex array (vao) if supported
+	LoadVertexBuffer                 :: proc(buffer: rawptr, size: c.int, is_dynamic: bool) -> c.uint ---         // Load a vertex buffer attribute
+	LoadVertexBufferElement          :: proc(buffer: rawptr, size: c.int, is_dynamic: bool) -> c.uint ---         // Load a new attributes element buffer
+	UpdateVertexBuffer               :: proc(bufferId: c.uint, data: rawptr, dataSize: c.int, offset: c.int) ---  // Update GPU buffer with new data
+	UpdateVertexBufferElements       :: proc(id: c.uint, data: rawptr, dataSize: c.int, offset: c.int) ---        // Update vertex buffer elements with new data
+	UnloadVertexArray                :: proc(vaoId: c.uint) ---
+	UnloadVertexBuffer               :: proc(vboId: c.uint) ---
+	SetVertexAttribute               :: proc(index: c.uint, compSize: c.int, type: c.int, normalized: bool, stride: c.int, pointer: rawptr) ---
+	SetVertexAttributeDivisor        :: proc(index: c.uint, divisor: c.int) ---
+	SetVertexAttributeDefault        :: proc(locIndex: c.int, value: rawptr, attribType: c.int, count: c.int) --- // Set vertex attribute default value
+	DrawVertexArray                  :: proc(offset: c.int, count: c.int) ---
+	DrawVertexArrayElements          :: proc(offset: c.int, count: c.int, buffer: rawptr) ---
+	DrawVertexArrayInstanced         :: proc(offset: c.int, count: c.int, instances: c.int) ---
+	DrawVertexArrayElementsInstanced :: proc(offset: c.int, count: c.int, buffer: rawptr, instances: c.int) ---
+
+	// Textures management
+	LoadTexture         :: proc(data: rawptr, width, height: c.int, format: c.int, mipmapCount: c.int) -> c.uint ---        // Load texture in GPU
+	LoadTextureDepth    :: proc(width, height: c.int, useRenderBuffer: bool) -> c.uint ---                                  // Load depth texture/renderbuffer (to be attached to fbo)
+	LoadTextureCubemap  :: proc(data: rawptr, size: c.int, format: c.int) -> c.uint ---                                     // Load texture cubemap
+	UpdateTexture       :: proc(id: c.uint, offsetX, offsetY: c.int, width, height: c.int, format: c.int, data: rawptr) --- // Update GPU texture with new data
+	GetGlTextureFormats :: proc(format: c.int, glInternalFormat, glFormat, glType: ^c.uint) ---                             // Get OpenGL internal formats
+	GetPixelFormatName  :: proc(format: c.uint) -> cstring ---                                                              // Get name string for pixel format
+	UnloadTexture       :: proc(id: c.uint) ---                                                                             // Unload texture from GPU memory
+	GenTextureMipmaps   :: proc(id: c.uint, width, height: c.int, format: c.int, mipmaps: ^c.int) ---                       // Generate mipmap data for selected texture
+	ReadTexturePixels   :: proc(id: c.uint, width, height: c.int, format: c.int) -> rawptr ---                              // Read texture pixel data
+	ReadScreenPixels    :: proc(width, height: c.int) -> [^]byte ---                                                        // Read screen pixel data (color buffer)
+
+	// Framebuffer management (fbo)
+	LoadFramebuffer     :: proc(width, height: c.int) -> c.uint ---                                           // Load an empty framebuffer
+	FramebufferAttach   :: proc(fboId, texId: c.uint, attachType: c.int, texType: c.int, mipLevel: c.int) --- // Attach texture/renderbuffer to a framebuffer
+	FramebufferComplete :: proc(id: c.uint) -> bool ---                                                       // Verify framebuffer is complete
+	UnloadFramebuffer   :: proc(id: c.uint) ---                                                               // Delete framebuffer from GPU
+
+	// Shaders management
+	LoadShaderCode      :: proc(vsCode, fsCode: cstring) -> c.uint ---                                // Load shader from code strings
+	CompileShader       :: proc(shaderCode: cstring, type: c.int) -> c.uint ---                       // Compile custom shader and return shader id (type: VERTEX_SHADER, FRAGMENT_SHADER, COMPUTE_SHADER)
+	LoadShaderProgram   :: proc(vShaderId, fShaderId: c.uint) -> c.uint ---                           // Load custom shader program
+	UnloadShaderProgram :: proc(id: c.uint) ---                                                       // Unload shader program
+	GetLocationUniform  :: proc(shaderId: c.uint, uniformName: cstring) -> c.int ---                  // Get shader location uniform
+	GetLocationAttrib   :: proc(shaderId: c.uint, attribName: cstring) -> c.int ---                   // Get shader location attribute
+	SetUniform          :: proc(locIndex: c.int, value: rawptr, uniformType: c.int, count: c.int) --- // Set shader value uniform
+	SetUniformMatrix    :: proc(locIndex: c.int, mat: Matrix) ---                                     // Set shader value matrix
+	SetUniformSampler   :: proc(locIndex: c.int, textureId: c.uint) ---                               // Set shader value sampler
+	SetShader           :: proc(id: c.uint, locs: [^]c.int) ---                                       // Set shader currently active (id and locations)
+
+	// Compute shader management
+	LoadComputeShaderProgram :: proc(shaderId: c.uint) -> c.uint ---     // Load compute shader program
+	ComputeShaderDispatch    :: proc(groupX, groupY, groupZ: c.uint) --- // Dispatch compute shader (equivalent to *draw* for graphics pipeline)
+
+	// Shader buffer storage object management (ssbo)
+	LoadShaderBuffer    :: proc(size: c.uint, data: rawptr, usageHint: c.int) -> c.uint ---              // Load shader storage buffer object (SSBO)
+	UnloadShaderBuffer  :: proc(ssboId: c.uint) ---                                                      // Unload shader storage buffer object (SSBO)
+	UpdateShaderBuffer  :: proc(id: c.uint, data: rawptr, dataSize: c.uint, offset: c.uint) ---          // Update SSBO buffer data
+	BindShaderBuffer    :: proc(id: c.uint, index: c.uint) ---                                           // Bind SSBO buffer
+	ReadShaderBuffer    :: proc(id: c.uint, dest: rawptr, count: c.uint, offset: c.uint) ---             // Read SSBO buffer data (GPU->CPU)
+	CopyShaderBuffer    :: proc(destId, srcId: c.uint, destOffset, srcOffset: c.uint, count: c.uint) --- // Copy SSBO data between buffers
+	GetShaderBufferSize :: proc(id: c.uint) -> c.uint ---                                                // Get SSBO buffer size
+
+	// Buffer management
+	BindImageTexture :: proc(id: c.uint, index: c.uint, format: c.int, readonly: bool) ---  // Bind image texture
+
+	// Matrix state management
+	GetMatrixModelview        :: proc() -> Matrix ---           // Get internal modelview matrix
+	GetMatrixProjection       :: proc() -> Matrix ---           // Get internal projection matrix
+	GetMatrixTransform        :: proc() -> Matrix ---           // Get internal accumulated transform matrix
+	GetMatrixProjectionStereo :: proc(eye: c.int) -> Matrix --- // Get internal projection matrix for stereo render (selected eye)
+	GetMatrixViewOffsetStereo :: proc(eye: c.int) -> Matrix --- // Get internal view offset matrix for stereo render (selected eye)
+	SetMatrixProjection       :: proc(proj: Matrix) ---         // Set a custom projection matrix (replaces internal projection matrix)
+	SetMatrixModelview        :: proc(view: Matrix) ---         // Set a custom modelview matrix (replaces internal modelview matrix)
+	SetMatrixProjectionStereo :: proc(right, left: Matrix) ---  // Set eyes projection matrices for stereo rendering
+	SetMatrixViewOffsetStereo :: proc(right, left: Matrix) ---  // Set eyes view offsets matrices for stereo rendering
+
+	// Quick and dirty cube/quad buffers load->draw->unload
+	LoadDrawCube :: proc() --- // Load and draw a cube
+	LoadDrawQuad :: proc() --- // Load and draw a quad
+}