From 95d412181d1bc32fb94df92198e3fd0a4a368ac4 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Tue, 5 Jan 2016 13:03:04 -0700
Subject: [PATCH] util: add debug_dump_ubyte_rgba_bmp()

Like debug_dump_float_rgba_bmp() but takes ubyte values.

Reviewed-by: Charmaine Lee <charmainel@vmware.com>
---
 src/gallium/auxiliary/util/u_debug.c | 59 ++++++++++++++++++++++++++++
 src/gallium/auxiliary/util/u_debug.h |  4 ++
 2 files changed, 63 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c
index cb162d89a58..2b605594a2e 100644
--- a/src/gallium/auxiliary/util/u_debug.c
+++ b/src/gallium/auxiliary/util/u_debug.c
@@ -727,6 +727,65 @@ error1:
    ;
 }
 
+void
+debug_dump_ubyte_rgba_bmp(const char *filename,
+                          unsigned width, unsigned height,
+                          const ubyte *rgba, unsigned stride)
+{
+   FILE *stream;
+   struct bmp_file_header bmfh;
+   struct bmp_info_header bmih;
+   unsigned x, y;
+
+   assert(rgba);
+   if(!rgba)
+      goto error1;
+
+   bmfh.bfType = 0x4d42;
+   bmfh.bfSize = 14 + 40 + height*width*4;
+   bmfh.bfReserved1 = 0;
+   bmfh.bfReserved2 = 0;
+   bmfh.bfOffBits = 14 + 40;
+
+   bmih.biSize = 40;
+   bmih.biWidth = width;
+   bmih.biHeight = height;
+   bmih.biPlanes = 1;
+   bmih.biBitCount = 32;
+   bmih.biCompression = 0;
+   bmih.biSizeImage = height*width*4;
+   bmih.biXPelsPerMeter = 0;
+   bmih.biYPelsPerMeter = 0;
+   bmih.biClrUsed = 0;
+   bmih.biClrImportant = 0;
+
+   stream = fopen(filename, "wb");
+   assert(stream);
+   if(!stream)
+      goto error1;
+
+   fwrite(&bmfh, 14, 1, stream);
+   fwrite(&bmih, 40, 1, stream);
+
+   y = height;
+   while(y--) {
+      const ubyte *ptr = rgba + (stride * y * 4);
+      for(x = 0; x < width; ++x)
+      {
+         struct bmp_rgb_quad pixel;
+         pixel.rgbRed   = ptr[x*4 + 0];
+         pixel.rgbGreen = ptr[x*4 + 1];
+         pixel.rgbBlue  = ptr[x*4 + 2];
+         pixel.rgbAlpha = ptr[x*4 + 3];
+         fwrite(&pixel, 1, 4, stream);
+      }
+   }
+
+   fclose(stream);
+error1:
+   ;
+}
+
 
 /**
  * Print PIPE_TRANSFER_x flags with a message.
diff --git a/src/gallium/auxiliary/util/u_debug.h b/src/gallium/auxiliary/util/u_debug.h
index 34668f844e9..671bd37a085 100644
--- a/src/gallium/auxiliary/util/u_debug.h
+++ b/src/gallium/auxiliary/util/u_debug.h
@@ -490,12 +490,16 @@ void debug_dump_transfer_bmp(struct pipe_context *pipe,
 void debug_dump_float_rgba_bmp(const char *filename,
                                unsigned width, unsigned height,
                                float *rgba, unsigned stride);
+void debug_dump_ubyte_rgba_bmp(const char *filename,
+                               unsigned width, unsigned height,
+                               const ubyte *rgba, unsigned stride);
 #else
 #define debug_dump_image(prefix, format, cpp, width, height, stride, data) ((void)0)
 #define debug_dump_surface(pipe, prefix, surface) ((void)0)
 #define debug_dump_surface_bmp(pipe, filename, surface) ((void)0)
 #define debug_dump_transfer_bmp(filename, transfer, ptr) ((void)0)
 #define debug_dump_float_rgba_bmp(filename, width, height, rgba, stride) ((void)0)
+#define debug_dump_ubyte_rgba_bmp(filename, width, height, rgba, stride) ((void)0)
 #endif
 
 
-- 
2.30.2