Updating C99 API to support scaled textures.

include/bgfx.c99.h

@@ -150,6 +150,17 @@ typedef enum bgfx_uniform_type
 
 } bgfx_uniform_type_t;
 
+typedef enum bgfx_backbuffer_ratio
+{
+    BGFX_BACKBUFFER_RATIO_NONE,
+    BGFX_BACKBUFFER_RATIO_EQUAL,
+    BGFX_BACKBUFFER_RATIO_HALF,
+    BGFX_BACKBUFFER_RATIO_QUARTER,
+    BGFX_BACKBUFFER_RATIO_EIGHTH,
+    BGFX_BACKBUFFER_RATIO_SIXTEENTH,
+    BGFX_BACKBUFFER_RATIO_DOUBLE
+} bgfx_backbuffer_ratio_t;
+
 #define BGFX_HANDLE_T(_name) \
     typedef struct _name { uint16_t idx; } _name##_t;
 
@@ -935,6 +946,16 @@ BGFX_C_API bgfx_texture_handle_t bgfx_create_texture(const bgfx_memory_t* _mem,
  */
 BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_2d(uint16_t _width, uint16_t _height, uint8_t _numMips, bgfx_texture_format_t _format, uint32_t _flags, const bgfx_memory_t* _mem);
 
+/**
+*  Create 2D texture that scales with backbuffer size.
+*
+*  @param _ratio
+*  @param _numMips
+*  @param _format
+*  @param _flags
+*/
+BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_2d_scaled(bgfx_backbuffer_ratio_t _ratio, uint8_t _numMips, bgfx_texture_format_t _format, uint32_t _flags);
+
 /**
  *  Create 3D texture.
  *
@@ -1039,6 +1060,15 @@ BGFX_C_API void bgfx_destroy_texture(bgfx_texture_handle_t _handle);
  */
 BGFX_C_API bgfx_frame_buffer_handle_t bgfx_create_frame_buffer(uint16_t _width, uint16_t _height, bgfx_texture_format_t _format, uint32_t _textureFlags);
 
+/**
+*  Create frame buffer that scales with backbuffer size.
+*
+*  @param _ratio Backbuffer ratio.
+*  @param _format Texture format.
+*  @param _textureFlags Texture flags.
+*/
+BGFX_C_API bgfx_frame_buffer_handle_t bgfx_create_frame_buffer_scaled(bgfx_backbuffer_ratio_t _ratio, bgfx_texture_format_t _format, uint32_t _textureFlags);
+
 /**
  *  Create frame buffer.
  *

src/bgfx.cpp

@@ -3343,6 +3343,13 @@ BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_2d(uint16_t _width, uint16_
 	return handle.c;
 }
 
+BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_2d_scaled(bgfx_backbuffer_ratio_t _ratio, uint8_t _numMips, bgfx_texture_format_t _format, uint32_t _flags)
+{
+	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle;
+	handle.cpp = bgfx::createTexture2D(bgfx::BackbufferRatio::Enum(_ratio), _numMips, bgfx::TextureFormat::Enum(_format), _flags);
+	return handle.c;
+}
+
 BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_3d(uint16_t _width, uint16_t _height, uint16_t _depth, uint8_t _numMips, bgfx_texture_format_t _format, uint32_t _flags, const bgfx_memory_t* _mem)
 {
 	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle;
@@ -3388,6 +3395,13 @@ BGFX_C_API bgfx_frame_buffer_handle_t bgfx_create_frame_buffer(uint16_t _width,
 	return handle.c;
 }
 
+BGFX_C_API bgfx_frame_buffer_handle_t bgfx_create_frame_buffer_scaled(bgfx_backbuffer_ratio_t _ratio, bgfx_texture_format_t _format, uint32_t _textureFlags)
+{
+	union { bgfx_frame_buffer_handle_t c; bgfx::FrameBufferHandle cpp; } handle;
+	handle.cpp = bgfx::createFrameBuffer(bgfx::BackbufferRatio::Enum(_ratio), bgfx::TextureFormat::Enum(_format), _textureFlags);
+	return handle.c;
+}
+
 BGFX_C_API bgfx_frame_buffer_handle_t bgfx_create_frame_buffer_from_handles(uint8_t _num, bgfx_texture_handle_t* _handles, bool _destroyTextures)
 {
 	union { bgfx_frame_buffer_handle_t c; bgfx::FrameBufferHandle cpp; } handle;