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Fix GL PickPixel to be able to read back depth & stencil in two passes

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* GL doesn't seem to support reading both depth and stencil channels
  from a single texture, so we need to do a second pass to read back
  the stencil component
This commit is contained in:
baldurk
2015-02-26 15:41:47 +00:00
parent 08024a375b
commit f160c28d16
1 changed files with 36 additions and 19 deletions
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renderdoc/driver/gl/gl_debug.cpp
+36 -19
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@@ -950,29 +950,46 @@ void GLReplay::PickPixel(ResourceId texture, uint32_t x, uint32_t y, uint32_t sl
DebugData.outWidth = DebugData.outHeight = 1.0f;
gl.glViewport(0, 0, 1, 1);
{
TextureDisplay texDisplay;
TextureDisplay texDisplay;
texDisplay.Red = texDisplay.Green = texDisplay.Blue = texDisplay.Alpha = true;
texDisplay.FlipY = false;
texDisplay.HDRMul = -1.0f;
texDisplay.linearDisplayAsGamma = true;
texDisplay.mip = mip;
texDisplay.sampleIdx = sample;
texDisplay.CustomShader = ResourceId();
texDisplay.sliceFace = sliceFace;
texDisplay.rangemin = 0.0f;
texDisplay.rangemax = 1.0f;
texDisplay.scale = 1.0f;
texDisplay.texid = texture;
texDisplay.rawoutput = true;
texDisplay.offx = -float(x);
texDisplay.offy = -float(y);
texDisplay.Red = texDisplay.Green = texDisplay.Blue = texDisplay.Alpha = true;
texDisplay.FlipY = false;
texDisplay.HDRMul = -1.0f;
texDisplay.linearDisplayAsGamma = true;
texDisplay.mip = mip;
texDisplay.sampleIdx = sample;
texDisplay.CustomShader = ResourceId();
texDisplay.sliceFace = sliceFace;
texDisplay.rangemin = 0.0f;
texDisplay.rangemax = 1.0f;
texDisplay.scale = 1.0f;
texDisplay.texid = texture;
texDisplay.rawoutput = true;
texDisplay.offx = -float(x);
texDisplay.offy = -float(y);
RenderTextureInternal(texDisplay, false);
}
RenderTextureInternal(texDisplay, false);
gl.glReadPixels(0, 0, 1, 1, eGL_RGBA, eGL_FLOAT, (void *)pixel);
{
auto &texDetails = m_pDriver->m_Textures[texture];
// need to read stencil separately as GL can't read both depth and stencil
// at the same time.
if(texDetails.internalFormat == eGL_DEPTH24_STENCIL8 ||
texDetails.internalFormat == eGL_DEPTH32F_STENCIL8)
{
texDisplay.Red = texDisplay.Blue = texDisplay.Alpha = false;
RenderTextureInternal(texDisplay, false);
uint32_t stencilpixel[4];
gl.glReadPixels(0, 0, 1, 1, eGL_RGBA, eGL_FLOAT, (void *)stencilpixel);
pixel[1] = float(stencilpixel[1])/255.0f;
}
}
}
void GLReplay::CopyTex2DMSToArray(GLuint destArray, GLuint srcMS, GLint width, GLint height, GLint arraySize, GLint samples, GLenum intFormat)