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raysan5 2021-01-25 17:53:04 +01:00
parent f3ce3a6f74
commit 65b299c6cf
20 changed files with 309 additions and 309 deletions
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26
examples/models/resources/shaders/glsl330/brdf.fs
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@ -41,27 +41,27 @@ float RadicalInverseVdC(uint bits)
// Compute Hammersley coordinates
vec2 Hammersley(uint i, uint N)
{
return vec2(float(i)/float(N), RadicalInverseVdC(i));
return vec2(float(i)/float(N), RadicalInverseVdC(i));
}
// Integrate number of importance samples for (roughness and NoV)
vec3 ImportanceSampleGGX(vec2 Xi, vec3 N, float roughness)
{
float a = roughness*roughness;
float phi = 2.0 * PI * Xi.x;
float cosTheta = sqrt((1.0 - Xi.y)/(1.0 + (a*a - 1.0)*Xi.y));
float sinTheta = sqrt(1.0 - cosTheta*cosTheta);
float a = roughness*roughness;
float phi = 2.0 * PI * Xi.x;
float cosTheta = sqrt((1.0 - Xi.y)/(1.0 + (a*a - 1.0)*Xi.y));
float sinTheta = sqrt(1.0 - cosTheta*cosTheta);
// Transform from spherical coordinates to cartesian coordinates (halfway vector)
vec3 H = vec3(cos(phi)*sinTheta, sin(phi)*sinTheta, cosTheta);
// Transform from spherical coordinates to cartesian coordinates (halfway vector)
vec3 H = vec3(cos(phi)*sinTheta, sin(phi)*sinTheta, cosTheta);
// Transform from tangent space H vector to world space sample vector
vec3 up = ((abs(N.z) < 0.999) ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0));
vec3 tangent = normalize(cross(up, N));
vec3 bitangent = cross(N, tangent);
vec3 sampleVec = tangent*H.x + bitangent*H.y + N*H.z;
// Transform from tangent space H vector to world space sample vector
vec3 up = ((abs(N.z) < 0.999) ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0));
vec3 tangent = normalize(cross(up, N));
vec3 bitangent = cross(N, tangent);
vec3 sampleVec = tangent*H.x + bitangent*H.y + N*H.z;
return normalize(sampleVec);
return normalize(sampleVec);
}
float GeometrySchlickGGX(float NdotV, float roughness)

26
examples/models/resources/shaders/glsl330/prefilter.fs
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@ -54,26 +54,26 @@ float RadicalInverse_VdC(uint bits)
vec2 Hammersley(uint i, uint N)
{
return vec2(float(i)/float(N), RadicalInverse_VdC(i));
return vec2(float(i)/float(N), RadicalInverse_VdC(i));
}
vec3 ImportanceSampleGGX(vec2 Xi, vec3 N, float roughness)
{
float a = roughness*roughness;
float phi = 2.0*PI*Xi.x;
float cosTheta = sqrt((1.0 - Xi.y)/(1.0 + (a*a - 1.0)*Xi.y));
float sinTheta = sqrt(1.0 - cosTheta*cosTheta);
float a = roughness*roughness;
float phi = 2.0*PI*Xi.x;
float cosTheta = sqrt((1.0 - Xi.y)/(1.0 + (a*a - 1.0)*Xi.y));
float sinTheta = sqrt(1.0 - cosTheta*cosTheta);
// Transform from spherical coordinates to cartesian coordinates (halfway vector)
vec3 H = vec3(cos(phi)*sinTheta, sin(phi)*sinTheta, cosTheta);
// Transform from spherical coordinates to cartesian coordinates (halfway vector)
vec3 H = vec3(cos(phi)*sinTheta, sin(phi)*sinTheta, cosTheta);
// Transform from tangent space H vector to world space sample vector
vec3 up = ((abs(N.z) < 0.999) ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0));
vec3 tangent = normalize(cross(up, N));
vec3 bitangent = cross(N, tangent);
vec3 sampleVec = tangent*H.x + bitangent*H.y + N*H.z;
// Transform from tangent space H vector to world space sample vector
vec3 up = ((abs(N.z) < 0.999) ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0));
vec3 tangent = normalize(cross(up, N));
vec3 bitangent = cross(N, tangent);
vec3 sampleVec = tangent*H.x + bitangent*H.y + N*H.z;
return normalize(sampleVec);
return normalize(sampleVec);
}
void main()

2
examples/models/resources/shaders/glsl330/skybox.fs
View file

@ -4,7 +4,7 @@
*
* Copyright (c) 2017 Victor Fisac
*
* 19-Jun-2020 - modified by Giuseppe Mastrangelo (@peppemas) - VFlip Support
* 19-Jun-2020 - modified by Giuseppe Mastrangelo (@peppemas) - VFlip Support
*
**********************************************************************************************/