PlanetEditor/grk/cw 6/shaders/shader_pbr.vert

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2024-01-26 19:41:55 +01:00
#version 430 core
layout(location = 0) in vec3 vertexPosition;
layout(location = 1) in vec3 vertexNormal;
layout(location = 2) in vec2 vertexTexCoord;
layout(location = 3) in vec3 vertexTangent;
layout(location = 4) in vec3 vertexBitangent;
uniform mat4 transformation;
uniform mat4 modelMatrix;
out vec3 vecNormal;
out vec3 worldPos;
out vec2 vtc;
uniform vec3 lightPos;
uniform vec3 cameraPos;
uniform vec3 sunDir;
out vec3 viewDirTS;
out vec3 lightDirTS;
out vec3 sunDirTS;
void main()
{
worldPos = (modelMatrix * vec4(vertexPosition, 1)).xyz;
vecNormal = (modelMatrix * vec4(vertexNormal, 0)).xyz;
gl_Position = transformation * vec4(vertexPosition, 1.0);
vtc = vec2(vertexTexCoord.x, 1.0 - vertexTexCoord.y);
vec3 w_tangent = normalize(mat3(modelMatrix) * vertexTangent);
vec3 w_bitangent = normalize(mat3(modelMatrix) * vertexBitangent);
mat3 TBN = transpose(mat3(w_tangent, w_bitangent, vecNormal));
vec3 V = normalize(cameraPos - worldPos);
viewDirTS = TBN * V;
vec3 L = normalize(lightPos - worldPos);
lightDirTS = TBN * L;
sunDirTS = TBN * sunDir;
}