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Partial fix for ambient occlusion with Oculus.

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This commit is contained in:
Andrzej Kapolka 2013-11-26 17:18:03 -08:00
parent fa5f8b093c
commit e406988ed3
1 changed files with 6 additions and 2 deletions
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8
interface/resources/shaders/ambient_occlusion.frag
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@ -54,11 +54,15 @@ void main(void) {
vec3 center = texCoordToViewSpace(gl_TexCoord[0].st);
vec2 rdenominator = 1.0 / (rightTop - leftBottom);
vec2 xyFactor = 2.0 * near * rdenominator;
vec2 zFactor = (rightTop + leftBottom) * rdenominator;
float occlusion = 4.0;
for (int i = 0; i < SAMPLE_KERNEL_SIZE; i++) {
vec3 offset = center + rotation * (radius * sampleKernel[i]);
vec4 projected = gl_ProjectionMatrix * vec4(offset, 1.0);
float depth = texCoordToViewSpaceZ(projected.xy * 0.5 / projected.w + vec2(0.5, 0.5));
vec2 projected = offset.xy * xyFactor + offset.z * zFactor;
float depth = texCoordToViewSpaceZ(projected * -0.5 / offset.z + vec2(0.5, 0.5));
occlusion += 1.0 - step(offset.z, depth);
}