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OpenGL2: Speedup for SSAO & blur shaders, fix sunlight normals in lightall.

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This commit is contained in:
SmileTheory 2016-03-08 18:30:51 -08:00
parent 5738d09969
commit 65b999446d
4 changed files with 56 additions and 53 deletions
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46
code/renderergl2/glsl/depthblur_fp.glsl
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@ -11,22 +11,23 @@ float gauss[4] = float[4](0.40, 0.24, 0.054, 0.0044);
float getLinearDepth(sampler2D depthMap, const vec2 tex, const float zFarDivZNear)
{
float sampleZDivW = texture2D(depthMap, tex).r;
return 1.0 / mix(zFarDivZNear, 1.0, sampleZDivW);
float sampleZDivW = texture2D(depthMap, tex).r;
return 1.0 / mix(zFarDivZNear, 1.0, sampleZDivW);
}
vec4 depthGaussian1D(sampler2D imageMap, sampler2D depthMap, vec2 tex, float zFarDivZNear, float zFar)
vec4 depthGaussian1D(sampler2D imageMap, sampler2D depthMap, vec2 tex, float zFarDivZNear, float zFar, vec2 scale)
{
vec2 scale = u_ViewInfo.zw;
float depthCenter = getLinearDepth(depthMap, tex, zFarDivZNear);
//scale /= zFarDivZNear * depthCenter;
//int blurSteps = int(float(BLUR_SIZE) / (zFarDivZNear * depthCenter));
#if defined(USE_HORIZONTAL_BLUR)
vec2 direction = vec2(1.0, 0.0) * scale;
vec2 direction = vec2(scale.x, 0.0);
#else // if defined(USE_VERTICAL_BLUR)
vec2 direction = vec2(0.0, 1.0) * scale;
vec2 direction = vec2(0.0, scale.y);
#endif
float depthCenter = zFar * getLinearDepth(depthMap, tex, zFarDivZNear);
vec2 centerSlope = vec2(dFdx(depthCenter), dFdy(depthCenter)) / vec2(dFdx(tex.x), dFdy(tex.y));
vec2 slope = vec2(dFdx(depthCenter), dFdy(depthCenter)) / vec2(dFdx(tex.x), dFdy(tex.y));
#if defined(USE_GAUSS)
vec4 result = texture2D(imageMap, tex) * gauss[0];
@ -36,33 +37,32 @@ vec4 depthGaussian1D(sampler2D imageMap, sampler2D depthMap, vec2 tex, float zFa
float total = 1.0;
#endif
float zLimit = 5.0 / zFar;
int i, j;
for (i = 0; i < 2; i++)
{
for (j = 1; j < BLUR_SIZE; j++)
{
vec2 offset = direction * j;
float depthSample = zFar * getLinearDepth(depthMap, tex + offset, zFarDivZNear);
float depthExpected = depthCenter + dot(centerSlope, offset);
if(abs(depthSample - depthExpected) < 5.0)
{
float depthSample = getLinearDepth(depthMap, tex + offset, zFarDivZNear);
float depthExpected = depthCenter + dot(slope, offset);
float useSample = float(abs(depthSample - depthExpected) < zLimit);
#if defined(USE_GAUSS)
result += texture2D(imageMap, tex + offset) * gauss[j];
total += gauss[j];
result += texture2D(imageMap, tex + offset) * (gauss[j] * useSample);
total += gauss[j] * useSample;
#else
result += texture2D(imageMap, tex + offset);
total += 1.0;
result += texture2D(imageMap, tex + offset) * useSample;
total += useSample;
#endif
}
}
direction = -direction;
}
}
return result / total;
}
void main()
{
gl_FragColor = depthGaussian1D(u_ScreenImageMap, u_ScreenDepthMap, var_ScreenTex, u_ViewInfo.x, u_ViewInfo.y);
{
gl_FragColor = depthGaussian1D(u_ScreenImageMap, u_ScreenDepthMap, var_ScreenTex, u_ViewInfo.x, u_ViewInfo.y, u_ViewInfo.zw);
}