7e15234145
really dug into example to learn and just _leaving the example better then I found it_ but cleaning up some unused values and swizzle redudency in shaders. Tested on desktop and android
57 lines
No EOL
1.5 KiB
GLSL
57 lines
No EOL
1.5 KiB
GLSL
#version 450
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#extension GL_ARB_separate_shader_objects : enable
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#extension GL_ARB_shading_language_420pack : enable
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layout (location = 0) in vec3 inPos;
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layout (location = 1) in vec2 inUV;
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layout (location = 2) in vec3 inNormal;
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layout (location = 3) in vec3 inTangent;
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layout (location = 4) in vec3 inBiTangent;
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layout (binding = 0) uniform UBO
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{
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mat4 projection;
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mat4 model;
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mat4 normal;
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vec4 lightPos;
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} ubo;
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out gl_PerVertex
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{
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vec4 gl_Position;
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};
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layout (location = 0) out vec2 outUV;
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layout (location = 1) out vec3 outLightVec;
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layout (location = 2) out vec3 outLightVecB;
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layout (location = 3) out vec3 outLightDir;
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layout (location = 4) out vec3 outViewVec;
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void main(void)
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{
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vec3 vertexPosition = vec3(ubo.model * vec4(inPos, 1.0));
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outLightDir = normalize(ubo.lightPos.xyz - vertexPosition);
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// Setup (t)angent-(b)inormal-(n)ormal matrix for converting
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// object coordinates into tangent space
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mat3 tbnMatrix;
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tbnMatrix[0] = mat3(ubo.normal) * inTangent;
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tbnMatrix[1] = mat3(ubo.normal) * inBiTangent;
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tbnMatrix[2] = mat3(ubo.normal) * inNormal;
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outLightVec.xyz = vec3(ubo.lightPos.xyz - vertexPosition) * tbnMatrix;
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vec3 lightDist = ubo.lightPos.xyz - inPos;
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outLightVecB.x = dot(inTangent, lightDist);
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outLightVecB.y = dot(inBiTangent, lightDist);
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outLightVecB.z = dot(inNormal, lightDist);
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outViewVec.x = dot(inTangent, inPos);
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outViewVec.y = dot(inBiTangent, inPos);
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outViewVec.z = dot(inNormal, inPos);
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outUV = inUV;
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gl_Position = ubo.projection * ubo.model * vec4(inPos, 1.0);
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} |