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#if 0
#define MAX_TREE_HEIGHT 60.0
#endif
uniform mat4 shadowViewMat;
uniform mat4 shadowProjMat;
uniform vec4 shadowParams;
uniform mat4 treeMat;
uniform vec3 cameraDirX;
uniform vec3 cameraDirY;
layout(location = 0) in vec3 vtxPositionAttr; // vertexPosAttr
layout(location = 1) in vec2 vtxTexCoordAttr; // texCoordAttr
layout(location = 2) in vec3 vtxNormalAttr; // normalVecAttr
out vec2 vTexCoord;
out vec4 vBaseColor;
void main() {
vec4 vertexPos = vec4(vtxPositionAttr, 1.0);
vertexPos.xyz += (cameraDirX * vtxNormalAttr.x);
vertexPos.xyz += (cameraDirY * vtxNormalAttr.y);
vec4 vertexShadowPos = shadowViewMat * treeMat * vertexPos;
gl_Position = shadowProjMat * vertexShadowPos;
#if 0
vBaseColor.xyz = vtxNormalAttr.z * vec3(1.0, 1.0, 1.0);
vBaseColor.a = vtxPositionAttr * (0.20 * (1.0 / MAX_TREE_HEIGHT)) + 0.85;
#endif
vTexCoord = vtxTexCoordAttr;
}
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