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util: Dump surfaces to BMP.

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This allows quick inspection of surfaces in mass scale.
This commit is contained in:
José Fonseca
2008-09-08 22:21:33 +09:00
parent 7cfc294c70
commit 1da0a13389
2 changed files with 112 additions and 0 deletions
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109
src/gallium/auxiliary/util/p_debug.c
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@@ -55,7 +55,11 @@
#include "pipe/p_format.h"
#include "pipe/p_state.h"
#include "pipe/p_inlines.h"
#include "util/u_memory.h"
#include "util/u_string.h"
#include "util/u_stream.h"
#include "util/u_math.h"
#include "util/u_tile.h"
#ifdef PIPE_SUBSYSTEM_WINDOWS_DISPLAY
@@ -584,4 +588,109 @@ error2:
error1:
;
}
#pragma pack(push,2)
struct bmp_file_header {
uint16_t bfType;
uint32_t bfSize;
uint16_t bfReserved1;
uint16_t bfReserved2;
uint32_t bfOffBits;
};
#pragma pack(pop)
struct bmp_info_header {
uint32_t biSize;
int32_t biWidth;
int32_t biHeight;
uint16_t biPlanes;
uint16_t biBitCount;
uint32_t biCompression;
uint32_t biSizeImage;
int32_t biXPelsPerMeter;
int32_t biYPelsPerMeter;
uint32_t biClrUsed;
uint32_t biClrImportant;
};
struct bmp_rgb_quad {
uint8_t rgbBlue;
uint8_t rgbGreen;
uint8_t rgbRed;
uint8_t rgbAlpha;
};
void
debug_dump_surface_bmp(const char *filename,
struct pipe_surface *surface)
{
struct util_stream *stream;
unsigned surface_usage;
struct bmp_file_header bmfh;
struct bmp_info_header bmih;
float *rgba;
unsigned x, y;
if (!surface)
goto error1;
rgba = MALLOC(surface->width*4*sizeof(float));
if(!rgba)
goto error1;
bmfh.bfType = 0x4d42;
bmfh.bfSize = 14 + 40 + surface->height*surface->width*4;
bmfh.bfReserved1 = 0;
bmfh.bfReserved2 = 0;
bmfh.bfOffBits = 14 + 40;
bmih.biSize = 40;
bmih.biWidth = surface->width;
bmih.biHeight = surface->height;
bmih.biPlanes = 1;
bmih.biBitCount = 32;
bmih.biCompression = 0;
bmih.biSizeImage = surface->height*surface->width*4;
bmih.biXPelsPerMeter = 0;
bmih.biYPelsPerMeter = 0;
bmih.biClrUsed = 0;
bmih.biClrImportant = 0;
stream = util_stream_create(filename);
if(!stream)
goto error2;
util_stream_write(stream, &bmfh, 14);
util_stream_write(stream, &bmih, 40);
/* XXX: force mappable surface */
surface_usage = surface->usage;
surface->usage |= PIPE_BUFFER_USAGE_CPU_READ;
y = surface->height;
while(y--) {
pipe_get_tile_rgba(surface,
0, y, surface->width, 1,
rgba);
for(x = 0; x < surface->width; ++x)
{
struct bmp_rgb_quad pixel;
pixel.rgbRed = float_to_ubyte(rgba[x*4 + 0]);
pixel.rgbGreen = float_to_ubyte(rgba[x*4 + 1]);
pixel.rgbBlue = float_to_ubyte(rgba[x*4 + 2]);
pixel.rgbAlpha = float_to_ubyte(rgba[x*4 + 3]);
util_stream_write(stream, &pixel, 4);
}
}
surface->usage = surface_usage;
util_stream_close(stream);
error2:
FREE(rgba);
error1:
;
}
#endif