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Fixed GL screen shot.

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This commit is contained in:
bkaradzic 2012-06-23 14:38:06 -07:00
parent 8f3eb01cda
commit 22d8509fe8
3 changed files with 39 additions and 13 deletions
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38
src/bgfx.cpp
View File

@ -102,35 +102,51 @@ namespace bgfx
_result[15] = 1.0f;
}
void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _pitch, const void* _data)
void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _srcPitch, const void* _src, bool _grayscale, bool _yflip)
{
FILE* file = fopen(_filePath, "wb");
if ( NULL != file )
{
uint8_t type = _grayscale ? 3 : 2;
uint8_t bpp = _grayscale ? 8 : 32;
putc(0, file);
putc(0, file);
putc(2, file); // uncompressed RGBA
putc(type, file);
putc(0, file);
putc(0, file);
putc(0, file);
putc(0, file);
putc(0, file);
putc(0, file);
putc(0, file); // x origin
putc(0, file);
putc(0, file);
putc(0, file); // y origin
putc( _width&0xff, file);
putc(0, file);
putc(_width&0xff, file);
putc( (_width>>8)&0xff, file);
putc( _height&0xff, file);
putc(_height&0xff, file);
putc( (_height>>8)&0xff, file);
putc(32, file);
putc(bpp, file);
putc(32, file);
uint8_t* data = (uint8_t*)_data;
for (uint32_t yy = 0; yy < _height; ++yy)
uint32_t dstPitch = _width*bpp/8;
if (_yflip)
{
fwrite(data, _width*4, 1, file);
data += _pitch;
uint8_t* data = (uint8_t*)_src + dstPitch*_height - _srcPitch;
for (uint32_t yy = 0; yy < _height; ++yy)
{
fwrite(data, dstPitch, 1, file);
data -= _srcPitch;
}
}
else
{
uint8_t* data = (uint8_t*)_src;
for (uint32_t yy = 0; yy < _height; ++yy)
{
fwrite(data, dstPitch, 1, file);
data += _srcPitch;
}
}
fclose(file);

2
src/bgfx_p.h
View File

@ -122,7 +122,7 @@ namespace bgfx
void fatal(bgfx::Fatal::Enum _code, const char* _format, ...);
void release(Memory* _mem);
void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _pitch, const void* _data);
void saveTga(const char* _filePath, uint32_t _width, uint32_t _height, uint32_t _srcPitch, const void* _src, bool _grayscale = false, bool _yflip = false);
const char* getAttribName(Attrib::Enum _attr);
bool renderFrame();

12
src/renderer_gl.cpp
View File

@ -388,7 +388,17 @@ namespace bgfx
#if BGFX_CONFIG_RENDERER_OPENGL
void* data = g_realloc(NULL, m_resolution.m_width*m_resolution.m_height*4);
glReadPixels(0, 0, m_resolution.m_width, m_resolution.m_height, GL_RGBA, GL_UNSIGNED_BYTE, data);
saveTga( (const char*)_mem->data, m_resolution.m_width, m_resolution.m_height, m_resolution.m_width*4, data);
uint8_t* rgba = (uint8_t*)data;
for (uint32_t ii = 0, num = m_resolution.m_width*m_resolution.m_height; ii < num; ++ii)
{
uint8_t temp = rgba[0];
rgba[0] = rgba[2];
rgba[2] = temp;
rgba += 4;
}
saveTga( (const char*)_mem->data, m_resolution.m_width, m_resolution.m_height, m_resolution.m_width*4, data, false, true);
g_free(data);
#endif // BGFX_CONFIG_RENDERER_OPENGL
}