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Thumbnail generation fix on GLES by glReadPixels(RGBA) instead of RGB.

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This commit is contained in:
Michael Rennie
2017-05-09 07:26:04 -07:00
committed by Baldur Karlsson
parent 5fd460ecba
commit f19e67bb59
1 changed files with 23 additions and 11 deletions
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renderdoc/driver/gl/gl_driver.cpp
+23 -11
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@@ -2809,9 +2809,21 @@ WrappedOpenGL::BackbufferImage *WrappedOpenGL::SaveBackbufferImage()
thwidth = m_InitParams.width;
thheight = m_InitParams.height;
thpixels = new byte[thwidth * thheight * 3];
thpixels = new byte[thwidth * thheight * 4];
m_Real.glReadPixels(0, 0, thwidth, thheight, eGL_RGB, eGL_UNSIGNED_BYTE, thpixels);
// GLES only supports GL_RGBA
m_Real.glReadPixels(0, 0, thwidth, thheight, eGL_RGBA, eGL_UNSIGNED_BYTE, thpixels);
// RGBA -> RGB
for(uint32_t y = 0; y < thheight; y++)
{
for(uint32_t x = 0; x < thwidth; x++)
{
thpixels[(y * thwidth + x) * 3 + 0] = thpixels[(y * thwidth + x) * 4 + 0];
thpixels[(y * thwidth + x) * 3 + 1] = thpixels[(y * thwidth + x) * 4 + 1];
thpixels[(y * thwidth + x) * 3 + 2] = thpixels[(y * thwidth + x) * 4 + 2];
}
}
// flip the image in-place
for(uint32_t y = 0; y <= thheight / 2; y++)
@@ -2821,17 +2833,17 @@ WrappedOpenGL::BackbufferImage *WrappedOpenGL::SaveBackbufferImage()
for(uint32_t x = 0; x < thwidth; x++)
{
byte save[3];
save[0] = thpixels[y * (thwidth * 3) + x * 3 + 0];
save[1] = thpixels[y * (thwidth * 3) + x * 3 + 1];
save[2] = thpixels[y * (thwidth * 3) + x * 3 + 2];
save[0] = thpixels[(y * thwidth + x) * 3 + 0];
save[1] = thpixels[(y * thwidth + x) * 3 + 1];
save[2] = thpixels[(y * thwidth + x) * 3 + 2];
thpixels[y * (thwidth * 3) + x * 3 + 0] = thpixels[flipY * (thwidth * 3) + x * 3 + 0];
thpixels[y * (thwidth * 3) + x * 3 + 1] = thpixels[flipY * (thwidth * 3) + x * 3 + 1];
thpixels[y * (thwidth * 3) + x * 3 + 2] = thpixels[flipY * (thwidth * 3) + x * 3 + 2];
thpixels[(y * thwidth + x) * 3 + 0] = thpixels[(flipY * thwidth + x) * 3 + 0];
thpixels[(y * thwidth + x) * 3 + 1] = thpixels[(flipY * thwidth + x) * 3 + 1];
thpixels[(y * thwidth + x) * 3 + 2] = thpixels[(flipY * thwidth + x) * 3 + 2];
thpixels[flipY * (thwidth * 3) + x * 3 + 0] = save[0];
thpixels[flipY * (thwidth * 3) + x * 3 + 1] = save[1];
thpixels[flipY * (thwidth * 3) + x * 3 + 2] = save[2];
thpixels[(flipY * thwidth + x) * 3 + 0] = save[0];
thpixels[(flipY * thwidth + x) * 3 + 1] = save[1];
thpixels[(flipY * thwidth + x) * 3 + 2] = save[2];
}
}