anki-3d-engine/programs/SceneDebug.ankiprog

<!-- 
Copyright (C) 2009-2018, Panagiotis Christopoulos Charitos and contributors.
All rights reserved.
Code licensed under the BSD License.
http://www.anki3d.org/LICENSE
-->
<shaderProgram>
	<mutators>
		<mutator name="COLOR_TEXTURE" values="0 1"/>
		<mutator name="DITHERED_DEPTH_TEST" values="0 1"/> 
	</mutators>

	<inputs>
		<input name="INSTANCE_COUNT" type="uint" const="1"/>
	</inputs>

	<shaders>
		<shader type="vert">
			<source><![CDATA[
#include "shaders/Common.glsl"

layout(location = 0) in vec3 in_position;
#if COLOR_TEXTURE == 1
layout(location = 1) in vec2 in_uv;
layout(location = 0) out vec2 out_uv;
#endif

layout(ANKI_UBO_BINDING(1, 0), row_major) uniform u0_
{
	mat4 u_mvp[INSTANCE_COUNT];
	vec4 u_color;
};

out gl_PerVertex
{
	vec4 gl_Position;
};

void main()
{
#if COLOR_TEXTURE == 1
	out_uv = in_uv;
#endif
	gl_Position = u_mvp[gl_InstanceID] * vec4(in_position, 1.0);
}
			]]></source>
		</shader>

		<shader type="frag">
			<source><![CDATA[
#include "shaders/Common.glsl"

#if COLOR_TEXTURE == 1
layout(location = 0) in vec2 in_uv;
layout(ANKI_TEX_BINDING(1, 0)) uniform sampler2D u_tex;
#endif

layout(ANKI_UBO_BINDING(1, 0), row_major) uniform u0_
{
	mat4 u_mvp[INSTANCE_COUNT];
	vec4 u_color;
};

#if DITHERED_DEPTH_TEST == 1
layout(ANKI_TEX_BINDING(0, 0)) uniform sampler2D u_depthRt;
#endif

layout(location = 0) out vec4 out_color;

void main()
{
	// Check if we should skip the frag
#if DITHERED_DEPTH_TEST == 1
	vec2 uv = gl_FragCoord.xy / vec2(textureSize(u_depthRt, 0));
	float depthRef = textureLod(u_depthRt, uv, 0.0).r;
	bool depthTestFailed = gl_FragCoord.z >= depthRef;
	ivec2 fragCoordi = ivec2(gl_FragCoord.xy);
	if(depthTestFailed && ((fragCoordi.x + fragCoordi.y) % 8) != 0)
	{
		discard;
	}
#endif

	// Write the color
#if COLOR_TEXTURE == 1
	out_color = texture(u_tex, in_uv) * u_color;
#else
	out_color = u_color;
#endif
}
			]]></source>
		</shader>
	</shaders>
</shaderProgram>