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Multisampling ssao bug fixes and split linear depth to its own buffer

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This commit is contained in:
Magnus Norddahl 2016-10-09 06:17:48 +02:00
commit 1b7c42f45f
8 changed files with 55 additions and 48 deletions
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22
src/gl/renderer/gl_postprocess.cpp
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@ -122,9 +122,14 @@ CUSTOM_CVAR(Int, gl_ssao_portals, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CVAR(Float, gl_ssao_strength, 0.7, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CVAR(Int, gl_ssao_debug, 0, 0)
CVAR(Float, gl_ssao_bias, 0.5f, 0)
CVAR(Float, gl_ssao_radius, 100.0f, 0)
CUSTOM_CVAR(Float, gl_ssao_blur_amount, 16.0f, 0)
CVAR(Float, gl_ssao_bias, 0.2f, 0)
CVAR(Float, gl_ssao_radius, 80.0f, 0)
CUSTOM_CVAR(Float, gl_ssao_blur, 16.0f, 0)
{
if (self < 0.1f) self = 0.1f;
}
CUSTOM_CVAR(Float, gl_ssao_exponent, 1.8f, 0)
{
if (self < 0.1f) self = 0.1f;
}
@ -166,7 +171,7 @@ void FGLRenderer::AmbientOccludeScene()
float bias = gl_ssao_bias;
float aoRadius = gl_ssao_radius;
const float blurAmount = gl_ssao_blur_amount;
const float blurAmount = gl_ssao_blur;
float aoStrength = gl_ssao_strength;
//float tanHalfFovy = tan(fovy * (M_PI / 360.0f));
@ -186,7 +191,7 @@ void FGLRenderer::AmbientOccludeScene()
int randomTexture = clamp(gl_ssao - 1, 0, FGLRenderBuffers::NumAmbientRandomTextures - 1);
// Calculate linear depth values
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB0);
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->LinearDepthFB);
glViewport(0, 0, mBuffers->AmbientWidth, mBuffers->AmbientHeight);
mBuffers->BindSceneDepthTexture(0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@ -198,7 +203,7 @@ void FGLRenderer::AmbientOccludeScene()
mLinearDepthShader->Bind();
mLinearDepthShader->DepthTexture.Set(0);
mLinearDepthShader->ColorTexture.Set(1);
if (gl_multisample > 1) mLinearDepthShader->SampleCount.Set(gl_multisample);
if (gl_multisample > 1) mLinearDepthShader->SampleIndex.Set(0);
mLinearDepthShader->LinearizeDepthA.Set(1.0f / GetZFar() - 1.0f / GetZNear());
mLinearDepthShader->LinearizeDepthB.Set(MAX(1.0f / GetZNear(), 1.e-8f));
mLinearDepthShader->InverseDepthRangeA.Set(1.0f);
@ -209,7 +214,7 @@ void FGLRenderer::AmbientOccludeScene()
// Apply ambient occlusion
glBindFramebuffer(GL_FRAMEBUFFER, mBuffers->AmbientFB1);
glBindTexture(GL_TEXTURE_2D, mBuffers->AmbientTexture0);
glBindTexture(GL_TEXTURE_2D, mBuffers->LinearDepthTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glActiveTexture(GL_TEXTURE1);
@ -226,6 +231,7 @@ void FGLRenderer::AmbientOccludeScene()
mSSAOShader->DepthTexture.Set(0);
mSSAOShader->RandomTexture.Set(1);
mSSAOShader->NormalTexture.Set(2);
if (gl_multisample > 1) mSSAOShader->SampleIndex.Set(0);
mSSAOShader->UVToViewA.Set(2.0f * invFocalLenX, 2.0f * invFocalLenY);
mSSAOShader->UVToViewB.Set(-invFocalLenX, -invFocalLenY);
mSSAOShader->InvFullResolution.Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
@ -255,7 +261,7 @@ void FGLRenderer::AmbientOccludeScene()
mDepthBlurShader->Bind(true);
mDepthBlurShader->BlurSharpness[true].Set(blurSharpness);
mDepthBlurShader->InvFullResolution[true].Set(1.0f / mBuffers->AmbientWidth, 1.0f / mBuffers->AmbientHeight);
mDepthBlurShader->PowExponent[true].Set(1.8f);
mDepthBlurShader->PowExponent[true].Set(gl_ssao_exponent);
RenderScreenQuad();
}