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opengles emulator: Fixed upside-down gl image

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This fix performs a flip software copy to match our coords with those expected by the flinger.
We may think of a better implementation in the future.

Change-Id: Ic09a5d0e22f7e209b33c07c993a3d56e328dd3ed
This commit is contained in:
Stas Gurtovoy
2011-06-06 13:42:06 +03:00
committed by Guy Zadickario
parent 688620eb31
commit fdcba322fe
3 changed files with 24 additions and 4 deletions
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19
tools/emulator/opengl/host/libs/libOpenglRender/WindowSurface.cpp
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@@ -227,8 +227,27 @@ void WindowSurface::copyToColorBuffer()
GL_RGBA, GL_UNSIGNED_BYTE, data);
}
#define FLIP_BUFFER 1
#if FLIP_BUFFER
//We need to flip the pixels
int bpp = 4;
void *tmpBuf = m_xUpdateBuf.alloc(m_width * m_height * bpp);
int dst_line_len = m_width * bpp;
int src_line_len = m_width * bpp;
char *src = (char *)data;
char *dst = (char*)tmpBuf + (m_height-1)*dst_line_len;
for (uint32_t y=0; y<m_height; y++) {
memcpy(dst, src, dst_line_len);
src += src_line_len;
dst -= dst_line_len;
}
// update the attached color buffer with the fliped readback pixels
m_attachedColorBuffer->update(GL_RGBA, GL_UNSIGNED_BYTE, tmpBuf);
#else
// update the attached color buffer with the readback pixels
m_attachedColorBuffer->update(GL_RGBA, GL_UNSIGNED_BYTE, data);
#endif
// restore current context/surface
s_egl.eglMakeCurrent(fb->getDisplay(), prevDrawSurf,