procedural-3d-engine/data/shaders/texturesparseresidency/sparseresidency.frag

37 lines
No EOL
922 B
GLSL

#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
// Required for the sparse* commands used in this shader
#extension GL_ARB_sparse_texture2 : enable
layout (binding = 1) uniform sampler2D samplerColor;
layout (location = 0) in vec2 inUV;
layout (location = 1) in float inLodBias;
layout (location = 2) in vec3 inNormal;
layout (location = 3) in vec3 inViewVec;
layout (location = 4) in vec3 inLightVec;
layout (location = 0) out vec4 outFragColor;
void main()
{
// Get residency code for current texel
int residencyCode = sparseTextureARB(samplerColor, inUV, outFragColor);
// Check if texel is resident
bool texelResident = sparseTexelsResidentARB(residencyCode);
vec4 color;
if (texelResident)
{
color = texture(samplerColor, inUV, inLodBias);
}
else
{
color = vec4(1.0, 0.0, 0.0, 0.0);
}
outFragColor = vec4(color.rgb, 1.0);
}