svn merge ^/branches/released .

1 files changed, 613 insertions, 633 deletions

diff --git a/mesalib/src/mesa/main/debug.c b/mesalib/src/mesa/main/debug.c
index f0752d1a3..a6a909b48 100644
--- a/mesalib/src/mesa/main/debug.c
+++ b/mesalib/src/mesa/main/debug.c
@@ -1,633 +1,613 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.5

- *

- * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-#include "mtypes.h"

-#include "attrib.h"

-#include "colormac.h"

-#include "enums.h"

-#include "formats.h"

-#include "hash.h"

-#include "imports.h"

-#include "debug.h"

-#include "get.h"

-#include "pixelstore.h"

-#include "readpix.h"

-#include "texobj.h"

-

-

-/**

- * Primitive names

- */

-const char *_mesa_prim_name[GL_POLYGON+4] = {

-   "GL_POINTS",

-   "GL_LINES",

-   "GL_LINE_LOOP",

-   "GL_LINE_STRIP",

-   "GL_TRIANGLES",

-   "GL_TRIANGLE_STRIP",

-   "GL_TRIANGLE_FAN",

-   "GL_QUADS",

-   "GL_QUAD_STRIP",

-   "GL_POLYGON",

-   "outside begin/end",

-   "inside unknown primitive",

-   "unknown state"

-};

-

-

-static const char *

-tex_target_name(GLenum tgt)

-{

-   static const struct {

-      GLenum target;

-      const char *name;

-   } tex_targets[] = {

-      { GL_TEXTURE_1D, "GL_TEXTURE_1D" },

-      { GL_TEXTURE_2D, "GL_TEXTURE_2D" },

-      { GL_TEXTURE_3D, "GL_TEXTURE_3D" },

-      { GL_TEXTURE_CUBE_MAP, "GL_TEXTURE_CUBE_MAP" },

-      { GL_TEXTURE_RECTANGLE, "GL_TEXTURE_RECTANGLE" },

-      { GL_TEXTURE_1D_ARRAY_EXT, "GL_TEXTURE_1D_ARRAY" },

-      { GL_TEXTURE_2D_ARRAY_EXT, "GL_TEXTURE_2D_ARRAY" }

-   };

-   GLuint i;

-   for (i = 0; i < Elements(tex_targets); i++) {

-      if (tex_targets[i].target == tgt)

-         return tex_targets[i].name;

-   }

-   return "UNKNOWN TEX TARGET";

-}

-

-

-void

-_mesa_print_state( const char *msg, GLuint state )

-{

-   _mesa_debug(NULL,

-	   "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",

-	   msg,

-	   state,

-	   (state & _NEW_MODELVIEW)       ? "ctx->ModelView, " : "",

-	   (state & _NEW_PROJECTION)      ? "ctx->Projection, " : "",

-	   (state & _NEW_TEXTURE_MATRIX)  ? "ctx->TextureMatrix, " : "",

-	   (state & _NEW_ACCUM)           ? "ctx->Accum, " : "",

-	   (state & _NEW_COLOR)           ? "ctx->Color, " : "",

-	   (state & _NEW_DEPTH)           ? "ctx->Depth, " : "",

-	   (state & _NEW_EVAL)            ? "ctx->Eval/EvalMap, " : "",

-	   (state & _NEW_FOG)             ? "ctx->Fog, " : "",

-	   (state & _NEW_HINT)            ? "ctx->Hint, " : "",

-	   (state & _NEW_LIGHT)           ? "ctx->Light, " : "",

-	   (state & _NEW_LINE)            ? "ctx->Line, " : "",

-	   (state & _NEW_PIXEL)           ? "ctx->Pixel, " : "",

-	   (state & _NEW_POINT)           ? "ctx->Point, " : "",

-	   (state & _NEW_POLYGON)         ? "ctx->Polygon, " : "",

-	   (state & _NEW_POLYGONSTIPPLE)  ? "ctx->PolygonStipple, " : "",

-	   (state & _NEW_SCISSOR)         ? "ctx->Scissor, " : "",

-	   (state & _NEW_STENCIL)         ? "ctx->Stencil, " : "",

-	   (state & _NEW_TEXTURE)         ? "ctx->Texture, " : "",

-	   (state & _NEW_TRANSFORM)       ? "ctx->Transform, " : "",

-	   (state & _NEW_VIEWPORT)        ? "ctx->Viewport, " : "",

-	   (state & _NEW_PACKUNPACK)      ? "ctx->Pack/Unpack, " : "",

-	   (state & _NEW_ARRAY)           ? "ctx->Array, " : "",

-	   (state & _NEW_RENDERMODE)      ? "ctx->RenderMode, " : "",

-	   (state & _NEW_BUFFERS)         ? "ctx->Visual, ctx->DrawBuffer,, " : "");

-}

-

-

-

-void

-_mesa_print_tri_caps( const char *name, GLuint flags )

-{

-   _mesa_debug(NULL,

-	   "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s\n",

-	   name,

-	   flags,

-	   (flags & DD_FLATSHADE)           ? "flat-shade, " : "",

-	   (flags & DD_SEPARATE_SPECULAR)   ? "separate-specular, " : "",

-	   (flags & DD_TRI_LIGHT_TWOSIDE)   ? "tri-light-twoside, " : "",

-	   (flags & DD_TRI_TWOSTENCIL)      ? "tri-twostencil, " : "",

-	   (flags & DD_TRI_UNFILLED)        ? "tri-unfilled, " : "",

-	   (flags & DD_TRI_STIPPLE)         ? "tri-stipple, " : "",

-	   (flags & DD_TRI_OFFSET)          ? "tri-offset, " : "",

-	   (flags & DD_TRI_SMOOTH)          ? "tri-smooth, " : "",

-	   (flags & DD_LINE_SMOOTH)         ? "line-smooth, " : "",

-	   (flags & DD_LINE_STIPPLE)        ? "line-stipple, " : "",

-	   (flags & DD_POINT_SMOOTH)        ? "point-smooth, " : "",

-	   (flags & DD_POINT_ATTEN)         ? "point-atten, " : "",

-	   (flags & DD_TRI_CULL_FRONT_BACK) ? "cull-all, " : ""

-      );

-}

-

-

-/**

- * Print information about this Mesa version and build options.

- */

-void _mesa_print_info( void )

-{

-   _mesa_debug(NULL, "Mesa GL_VERSION = %s\n",

-	   (char *) _mesa_GetString(GL_VERSION));

-   _mesa_debug(NULL, "Mesa GL_RENDERER = %s\n",

-	   (char *) _mesa_GetString(GL_RENDERER));

-   _mesa_debug(NULL, "Mesa GL_VENDOR = %s\n",

-	   (char *) _mesa_GetString(GL_VENDOR));

-   _mesa_debug(NULL, "Mesa GL_EXTENSIONS = %s\n",

-	   (char *) _mesa_GetString(GL_EXTENSIONS));

-#if defined(THREADS)

-   _mesa_debug(NULL, "Mesa thread-safe: YES\n");

-#else

-   _mesa_debug(NULL, "Mesa thread-safe: NO\n");

-#endif

-#if defined(USE_X86_ASM)

-   _mesa_debug(NULL, "Mesa x86-optimized: YES\n");

-#else

-   _mesa_debug(NULL, "Mesa x86-optimized: NO\n");

-#endif

-#if defined(USE_SPARC_ASM)

-   _mesa_debug(NULL, "Mesa sparc-optimized: YES\n");

-#else

-   _mesa_debug(NULL, "Mesa sparc-optimized: NO\n");

-#endif

-}

-

-

-/**

- * Set the debugging flags.

- *

- * \param debug debug string

- *

- * If compiled with debugging support then search for keywords in \p debug and

- * enables the verbose debug output of the respective feature.

- */

-static void add_debug_flags( const char *debug )

-{

-#ifdef DEBUG

-   struct debug_option {

-      const char *name;

-      GLbitfield flag;

-   };

-   static const struct debug_option debug_opt[] = {

-      { "varray",    VERBOSE_VARRAY },

-      { "tex",       VERBOSE_TEXTURE },

-      { "mat",       VERBOSE_MATERIAL },

-      { "pipe",      VERBOSE_PIPELINE },

-      { "driver",    VERBOSE_DRIVER },

-      { "state",     VERBOSE_STATE },

-      { "api",       VERBOSE_API },

-      { "list",      VERBOSE_DISPLAY_LIST },

-      { "lighting",  VERBOSE_LIGHTING },

-      { "disassem",  VERBOSE_DISASSEM },

-      { "draw",      VERBOSE_DRAW },

-      { "swap",      VERBOSE_SWAPBUFFERS }

-   };

-   GLuint i;

-

-   MESA_VERBOSE = 0x0;

-   for (i = 0; i < Elements(debug_opt); i++) {

-      if (strstr(debug, debug_opt[i].name))

-         MESA_VERBOSE |= debug_opt[i].flag;

-   }

-

-   /* Debug flag:

-    */

-   if (strstr(debug, "flush"))

-      MESA_DEBUG_FLAGS |= DEBUG_ALWAYS_FLUSH;

-

-#if defined(_FPU_GETCW) && defined(_FPU_SETCW)

-   if (strstr(debug, "fpexceptions")) {

-      /* raise FP exceptions */

-      fpu_control_t mask;

-      _FPU_GETCW(mask);

-      mask &= ~(_FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM

-                | _FPU_MASK_OM | _FPU_MASK_UM);

-      _FPU_SETCW(mask);

-   }

-#endif

-

-#else

-   (void) debug;

-#endif

-}

-

-

-void 

-_mesa_init_debug( struct gl_context *ctx )

-{

-   char *c;

-

-   /* Dither disable */

-   ctx->NoDither = _mesa_getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE;

-   if (ctx->NoDither) {

-      if (_mesa_getenv("MESA_DEBUG")) {

-         _mesa_debug(ctx, "MESA_NO_DITHER set - dithering disabled\n");

-      }

-      ctx->Color.DitherFlag = GL_FALSE;

-   }

-

-   c = _mesa_getenv("MESA_DEBUG");

-   if (c)

-      add_debug_flags(c);

-

-   c = _mesa_getenv("MESA_VERBOSE");

-   if (c)

-      add_debug_flags(c);

-}

-

-

-/*

- * Write ppm file

- */

-static void

-write_ppm(const char *filename, const GLubyte *buffer, int width, int height,

-          int comps, int rcomp, int gcomp, int bcomp, GLboolean invert)

-{

-   FILE *f = fopen( filename, "w" );

-   if (f) {

-      int x, y;

-      const GLubyte *ptr = buffer;

-      fprintf(f,"P6\n");

-      fprintf(f,"# ppm-file created by osdemo.c\n");

-      fprintf(f,"%i %i\n", width,height);

-      fprintf(f,"255\n");

-      fclose(f);

-      f = fopen( filename, "ab" );  /* reopen in binary append mode */

-      for (y=0; y < height; y++) {

-         for (x = 0; x < width; x++) {

-            int yy = invert ? (height - 1 - y) : y;

-            int i = (yy * width + x) * comps;

-            fputc(ptr[i+rcomp], f); /* write red */

-            fputc(ptr[i+gcomp], f); /* write green */

-            fputc(ptr[i+bcomp], f); /* write blue */

-         }

-      }

-      fclose(f);

-   }

-}

-

-

-/**

- * Write a texture image to a ppm file.

- * \param face  cube face in [0,5]

- * \param level  mipmap level

- */

-static void

-write_texture_image(struct gl_texture_object *texObj,

-                    GLuint face, GLuint level)

-{

-   struct gl_texture_image *img = texObj->Image[face][level];

-   if (img) {

-      GET_CURRENT_CONTEXT(ctx);

-      struct gl_pixelstore_attrib store;

-      GLubyte *buffer;

-      char s[100];

-

-      buffer = (GLubyte *) malloc(img->Width * img->Height

-                                        * img->Depth * 4);

-

-      store = ctx->Pack; /* save */

-      ctx->Pack = ctx->DefaultPacking;

-

-      ctx->Driver.GetTexImage(ctx, texObj->Target, level,

-                              GL_RGBA, GL_UNSIGNED_BYTE,

-                              buffer, texObj, img);

-

-      /* make filename */

-      _mesa_snprintf(s, sizeof(s), "/tmp/tex%u.l%u.f%u.ppm", texObj->Name, level, face);

-

-      printf("  Writing image level %u to %s\n", level, s);

-      write_ppm(s, buffer, img->Width, img->Height, 4, 0, 1, 2, GL_FALSE);

-

-      ctx->Pack = store; /* restore */

-

-      free(buffer);

-   }

-}

-

-

-/**

- * Write renderbuffer image to a ppm file.

- */

-static void

-write_renderbuffer_image(const struct gl_renderbuffer *rb)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLubyte *buffer;

-   char s[100];

-   GLenum format, type;

-

-   if (rb->_BaseFormat == GL_RGB || 

-       rb->_BaseFormat == GL_RGBA) {

-      format = GL_RGBA;

-      type = GL_UNSIGNED_BYTE;

-   }

-   else if (rb->_BaseFormat == GL_DEPTH_STENCIL) {

-      format = GL_DEPTH_STENCIL;

-      type = GL_UNSIGNED_INT_24_8;

-   }

-   else {

-      return;

-   }

-

-   buffer = (GLubyte *) malloc(rb->Width * rb->Height * 4);

-

-   ctx->Driver.ReadPixels(ctx, 0, 0, rb->Width, rb->Height,

-                          format, type, &ctx->DefaultPacking, buffer);

-

-   /* make filename */

-   _mesa_snprintf(s, sizeof(s), "/tmp/renderbuffer%u.ppm", rb->Name);

-

-   printf("  Writing renderbuffer image to %s\n", s);

-   write_ppm(s, buffer, rb->Width, rb->Height, 4, 0, 1, 2, GL_TRUE);

-

-   free(buffer);

-}

-

-

-/** How many texture images (mipmap levels, faces) to write to files */

-#define WRITE_NONE 0

-#define WRITE_ONE  1

-#define WRITE_ALL  2

-

-static GLuint WriteImages;

-

-

-static void

-dump_texture(struct gl_texture_object *texObj, GLuint writeImages)

-{

-   const GLuint numFaces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;

-   GLboolean written = GL_FALSE;

-   GLuint i, j;

-

-   printf("Texture %u\n", texObj->Name);

-   printf("  Target %s\n", tex_target_name(texObj->Target));

-   for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {

-      for (j = 0; j < numFaces; j++) {

-         struct gl_texture_image *texImg = texObj->Image[j][i];

-         if (texImg) {

-            printf("  Face %u level %u: %d x %d x %d, format %s at %p\n",

-		   j, i,

-		   texImg->Width, texImg->Height, texImg->Depth,

-		   _mesa_get_format_name(texImg->TexFormat),

-		   texImg->Data);

-            if (writeImages == WRITE_ALL ||

-                (writeImages == WRITE_ONE && !written)) {

-               write_texture_image(texObj, j, i);

-               written = GL_TRUE;

-            }

-         }

-      }

-   }

-}

-

-

-/**

- * Dump a single texture.

- */

-void

-_mesa_dump_texture(GLuint texture, GLuint writeImages)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, texture);

-   if (texObj) {

-      dump_texture(texObj, writeImages);

-   }

-}

-

-

-static void

-dump_texture_cb(GLuint id, void *data, void *userData)

-{

-   struct gl_texture_object *texObj = (struct gl_texture_object *) data;

-   (void) userData;

-   dump_texture(texObj, WriteImages);

-}

-

-

-/**

- * Print basic info about all texture objext to stdout.

- * If dumpImages is true, write PPM of level[0] image to a file.

- */

-void

-_mesa_dump_textures(GLuint writeImages)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   WriteImages = writeImages;

-   _mesa_HashWalk(ctx->Shared->TexObjects, dump_texture_cb, ctx);

-}

-

-

-static void

-dump_renderbuffer(const struct gl_renderbuffer *rb, GLboolean writeImage)

-{

-   printf("Renderbuffer %u: %u x %u  IntFormat = %s\n",

-	  rb->Name, rb->Width, rb->Height,

-	  _mesa_lookup_enum_by_nr(rb->InternalFormat));

-   if (writeImage) {

-      write_renderbuffer_image(rb);

-   }

-}

-

-

-static void

-dump_renderbuffer_cb(GLuint id, void *data, void *userData)

-{

-   const struct gl_renderbuffer *rb = (const struct gl_renderbuffer *) data;

-   (void) userData;

-   dump_renderbuffer(rb, WriteImages);

-}

-

-

-/**

- * Print basic info about all renderbuffers to stdout.

- * If dumpImages is true, write PPM of level[0] image to a file.

- */

-void

-_mesa_dump_renderbuffers(GLboolean writeImages)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   WriteImages = writeImages;

-   _mesa_HashWalk(ctx->Shared->RenderBuffers, dump_renderbuffer_cb, ctx);

-}

-

-

-

-void

-_mesa_dump_color_buffer(const char *filename)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   const GLuint w = ctx->DrawBuffer->Width;

-   const GLuint h = ctx->DrawBuffer->Height;

-   GLubyte *buf;

-

-   buf = (GLubyte *) malloc(w * h * 4);

-

-   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);

-   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);

-   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);

-

-   _mesa_ReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buf);

-

-   printf("ReadBuffer %p 0x%x  DrawBuffer %p 0x%x\n",

-	  (void *) ctx->ReadBuffer->_ColorReadBuffer,

-	  ctx->ReadBuffer->ColorReadBuffer,

-	  (void *) ctx->DrawBuffer->_ColorDrawBuffers[0],

-	  ctx->DrawBuffer->ColorDrawBuffer[0]);

-   printf("Writing %d x %d color buffer to %s\n", w, h, filename);

-   write_ppm(filename, buf, w, h, 4, 0, 1, 2, GL_TRUE);

-

-   _mesa_PopClientAttrib();

-

-   free(buf);

-}

-

-

-void

-_mesa_dump_depth_buffer(const char *filename)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   const GLuint w = ctx->DrawBuffer->Width;

-   const GLuint h = ctx->DrawBuffer->Height;

-   GLuint *buf;

-   GLubyte *buf2;

-   GLuint i;

-

-   buf = (GLuint *) malloc(w * h * 4);  /* 4 bpp */

-   buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */

-

-   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);

-   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);

-   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);

-

-   _mesa_ReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buf);

-

-   /* spread 24 bits of Z across R, G, B */

-   for (i = 0; i < w * h; i++) {

-      buf2[i*3+0] = (buf[i] >> 24) & 0xff;

-      buf2[i*3+1] = (buf[i] >> 16) & 0xff;

-      buf2[i*3+2] = (buf[i] >>  8) & 0xff;

-   }

-

-   printf("Writing %d x %d depth buffer to %s\n", w, h, filename);

-   write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);

-

-   _mesa_PopClientAttrib();

-

-   free(buf);

-   free(buf2);

-}

-

-

-void

-_mesa_dump_stencil_buffer(const char *filename)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   const GLuint w = ctx->DrawBuffer->Width;

-   const GLuint h = ctx->DrawBuffer->Height;

-   GLubyte *buf;

-   GLubyte *buf2;

-   GLuint i;

-

-   buf = (GLubyte *) malloc(w * h);  /* 1 bpp */

-   buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */

-

-   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);

-   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);

-   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);

-

-   _mesa_ReadPixels(0, 0, w, h, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, buf);

-

-   for (i = 0; i < w * h; i++) {

-      buf2[i*3+0] = buf[i];

-      buf2[i*3+1] = (buf[i] & 127) * 2;

-      buf2[i*3+2] = (buf[i] - 128) * 2;

-   }

-

-   printf("Writing %d x %d stencil buffer to %s\n", w, h, filename);

-   write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);

-

-   _mesa_PopClientAttrib();

-

-   free(buf);

-   free(buf2);

-}

-

-

-/**

- * Quick and dirty function to "print" a texture to stdout.

- */

-void

-_mesa_print_texture(struct gl_context *ctx, const struct gl_texture_image *img)

-{

-#if CHAN_TYPE != GL_UNSIGNED_BYTE

-   _mesa_problem(NULL, "PrintTexture not supported");

-#else

-   GLuint i, j, c;

-   const GLubyte *data = (const GLubyte *) img->Data;

-

-   if (!data) {

-      printf("No texture data\n");

-      return;

-   }

-

-   /* XXX add more formats or make into a new format utility function */

-   switch (img->TexFormat) {

-      case MESA_FORMAT_A8:

-      case MESA_FORMAT_L8:

-      case MESA_FORMAT_I8:

-      case MESA_FORMAT_CI8:

-         c = 1;

-         break;

-      case MESA_FORMAT_AL88:

-      case MESA_FORMAT_AL88_REV:

-         c = 2;

-         break;

-      case MESA_FORMAT_RGB888:

-      case MESA_FORMAT_BGR888:

-         c = 3;

-         break;

-      case MESA_FORMAT_RGBA8888:

-      case MESA_FORMAT_ARGB8888:

-         c = 4;

-         break;

-      default:

-         _mesa_problem(NULL, "error in PrintTexture\n");

-         return;

-   }

-

-   for (i = 0; i < img->Height; i++) {

-      for (j = 0; j < img->Width; j++) {

-         if (c==1)

-            printf("%02x  ", data[0]);

-         else if (c==2)

-            printf("%02x%02x  ", data[0], data[1]);

-         else if (c==3)

-            printf("%02x%02x%02x  ", data[0], data[1], data[2]);

-         else if (c==4)

-            printf("%02x%02x%02x%02x  ", data[0], data[1], data[2], data[3]);

-         data += (img->RowStride - img->Width) * c;

-      }

-      /* XXX use img->ImageStride here */

-      printf("\n");

-   }

-#endif

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "mtypes.h"
+#include "attrib.h"
+#include "colormac.h"
+#include "enums.h"
+#include "formats.h"
+#include "hash.h"
+#include "imports.h"
+#include "debug.h"
+#include "get.h"
+#include "pixelstore.h"
+#include "readpix.h"
+#include "texobj.h"
+
+
+static const char *
+tex_target_name(GLenum tgt)
+{
+   static const struct {
+      GLenum target;
+      const char *name;
+   } tex_targets[] = {
+      { GL_TEXTURE_1D, "GL_TEXTURE_1D" },
+      { GL_TEXTURE_2D, "GL_TEXTURE_2D" },
+      { GL_TEXTURE_3D, "GL_TEXTURE_3D" },
+      { GL_TEXTURE_CUBE_MAP, "GL_TEXTURE_CUBE_MAP" },
+      { GL_TEXTURE_RECTANGLE, "GL_TEXTURE_RECTANGLE" },
+      { GL_TEXTURE_1D_ARRAY_EXT, "GL_TEXTURE_1D_ARRAY" },
+      { GL_TEXTURE_2D_ARRAY_EXT, "GL_TEXTURE_2D_ARRAY" }
+   };
+   GLuint i;
+   for (i = 0; i < Elements(tex_targets); i++) {
+      if (tex_targets[i].target == tgt)
+         return tex_targets[i].name;
+   }
+   return "UNKNOWN TEX TARGET";
+}
+
+
+void
+_mesa_print_state( const char *msg, GLuint state )
+{
+   _mesa_debug(NULL,
+	   "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
+	   msg,
+	   state,
+	   (state & _NEW_MODELVIEW)       ? "ctx->ModelView, " : "",
+	   (state & _NEW_PROJECTION)      ? "ctx->Projection, " : "",
+	   (state & _NEW_TEXTURE_MATRIX)  ? "ctx->TextureMatrix, " : "",
+	   (state & _NEW_ACCUM)           ? "ctx->Accum, " : "",
+	   (state & _NEW_COLOR)           ? "ctx->Color, " : "",
+	   (state & _NEW_DEPTH)           ? "ctx->Depth, " : "",
+	   (state & _NEW_EVAL)            ? "ctx->Eval/EvalMap, " : "",
+	   (state & _NEW_FOG)             ? "ctx->Fog, " : "",
+	   (state & _NEW_HINT)            ? "ctx->Hint, " : "",
+	   (state & _NEW_LIGHT)           ? "ctx->Light, " : "",
+	   (state & _NEW_LINE)            ? "ctx->Line, " : "",
+	   (state & _NEW_PIXEL)           ? "ctx->Pixel, " : "",
+	   (state & _NEW_POINT)           ? "ctx->Point, " : "",
+	   (state & _NEW_POLYGON)         ? "ctx->Polygon, " : "",
+	   (state & _NEW_POLYGONSTIPPLE)  ? "ctx->PolygonStipple, " : "",
+	   (state & _NEW_SCISSOR)         ? "ctx->Scissor, " : "",
+	   (state & _NEW_STENCIL)         ? "ctx->Stencil, " : "",
+	   (state & _NEW_TEXTURE)         ? "ctx->Texture, " : "",
+	   (state & _NEW_TRANSFORM)       ? "ctx->Transform, " : "",
+	   (state & _NEW_VIEWPORT)        ? "ctx->Viewport, " : "",
+	   (state & _NEW_PACKUNPACK)      ? "ctx->Pack/Unpack, " : "",
+	   (state & _NEW_ARRAY)           ? "ctx->Array, " : "",
+	   (state & _NEW_RENDERMODE)      ? "ctx->RenderMode, " : "",
+	   (state & _NEW_BUFFERS)         ? "ctx->Visual, ctx->DrawBuffer,, " : "");
+}
+
+
+
+void
+_mesa_print_tri_caps( const char *name, GLuint flags )
+{
+   _mesa_debug(NULL,
+	   "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s\n",
+	   name,
+	   flags,
+	   (flags & DD_FLATSHADE)           ? "flat-shade, " : "",
+	   (flags & DD_SEPARATE_SPECULAR)   ? "separate-specular, " : "",
+	   (flags & DD_TRI_LIGHT_TWOSIDE)   ? "tri-light-twoside, " : "",
+	   (flags & DD_TRI_TWOSTENCIL)      ? "tri-twostencil, " : "",
+	   (flags & DD_TRI_UNFILLED)        ? "tri-unfilled, " : "",
+	   (flags & DD_TRI_STIPPLE)         ? "tri-stipple, " : "",
+	   (flags & DD_TRI_OFFSET)          ? "tri-offset, " : "",
+	   (flags & DD_TRI_SMOOTH)          ? "tri-smooth, " : "",
+	   (flags & DD_LINE_SMOOTH)         ? "line-smooth, " : "",
+	   (flags & DD_LINE_STIPPLE)        ? "line-stipple, " : "",
+	   (flags & DD_POINT_SMOOTH)        ? "point-smooth, " : "",
+	   (flags & DD_POINT_ATTEN)         ? "point-atten, " : "",
+	   (flags & DD_TRI_CULL_FRONT_BACK) ? "cull-all, " : ""
+      );
+}
+
+
+/**
+ * Print information about this Mesa version and build options.
+ */
+void _mesa_print_info( void )
+{
+   _mesa_debug(NULL, "Mesa GL_VERSION = %s\n",
+	   (char *) _mesa_GetString(GL_VERSION));
+   _mesa_debug(NULL, "Mesa GL_RENDERER = %s\n",
+	   (char *) _mesa_GetString(GL_RENDERER));
+   _mesa_debug(NULL, "Mesa GL_VENDOR = %s\n",
+	   (char *) _mesa_GetString(GL_VENDOR));
+   _mesa_debug(NULL, "Mesa GL_EXTENSIONS = %s\n",
+	   (char *) _mesa_GetString(GL_EXTENSIONS));
+#if defined(THREADS)
+   _mesa_debug(NULL, "Mesa thread-safe: YES\n");
+#else
+   _mesa_debug(NULL, "Mesa thread-safe: NO\n");
+#endif
+#if defined(USE_X86_ASM)
+   _mesa_debug(NULL, "Mesa x86-optimized: YES\n");
+#else
+   _mesa_debug(NULL, "Mesa x86-optimized: NO\n");
+#endif
+#if defined(USE_SPARC_ASM)
+   _mesa_debug(NULL, "Mesa sparc-optimized: YES\n");
+#else
+   _mesa_debug(NULL, "Mesa sparc-optimized: NO\n");
+#endif
+}
+
+
+/**
+ * Set the debugging flags.
+ *
+ * \param debug debug string
+ *
+ * If compiled with debugging support then search for keywords in \p debug and
+ * enables the verbose debug output of the respective feature.
+ */
+static void add_debug_flags( const char *debug )
+{
+#ifdef DEBUG
+   struct debug_option {
+      const char *name;
+      GLbitfield flag;
+   };
+   static const struct debug_option debug_opt[] = {
+      { "varray",    VERBOSE_VARRAY },
+      { "tex",       VERBOSE_TEXTURE },
+      { "mat",       VERBOSE_MATERIAL },
+      { "pipe",      VERBOSE_PIPELINE },
+      { "driver",    VERBOSE_DRIVER },
+      { "state",     VERBOSE_STATE },
+      { "api",       VERBOSE_API },
+      { "list",      VERBOSE_DISPLAY_LIST },
+      { "lighting",  VERBOSE_LIGHTING },
+      { "disassem",  VERBOSE_DISASSEM },
+      { "draw",      VERBOSE_DRAW },
+      { "swap",      VERBOSE_SWAPBUFFERS }
+   };
+   GLuint i;
+
+   MESA_VERBOSE = 0x0;
+   for (i = 0; i < Elements(debug_opt); i++) {
+      if (strstr(debug, debug_opt[i].name))
+         MESA_VERBOSE |= debug_opt[i].flag;
+   }
+
+   /* Debug flag:
+    */
+   if (strstr(debug, "flush"))
+      MESA_DEBUG_FLAGS |= DEBUG_ALWAYS_FLUSH;
+
+#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
+   if (strstr(debug, "fpexceptions")) {
+      /* raise FP exceptions */
+      fpu_control_t mask;
+      _FPU_GETCW(mask);
+      mask &= ~(_FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM
+                | _FPU_MASK_OM | _FPU_MASK_UM);
+      _FPU_SETCW(mask);
+   }
+#endif
+
+#else
+   (void) debug;
+#endif
+}
+
+
+void 
+_mesa_init_debug( struct gl_context *ctx )
+{
+   char *c;
+
+   /* Dither disable */
+   ctx->NoDither = _mesa_getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE;
+   if (ctx->NoDither) {
+      if (_mesa_getenv("MESA_DEBUG")) {
+         _mesa_debug(ctx, "MESA_NO_DITHER set - dithering disabled\n");
+      }
+      ctx->Color.DitherFlag = GL_FALSE;
+   }
+
+   c = _mesa_getenv("MESA_DEBUG");
+   if (c)
+      add_debug_flags(c);
+
+   c = _mesa_getenv("MESA_VERBOSE");
+   if (c)
+      add_debug_flags(c);
+}
+
+
+/*
+ * Write ppm file
+ */
+static void
+write_ppm(const char *filename, const GLubyte *buffer, int width, int height,
+          int comps, int rcomp, int gcomp, int bcomp, GLboolean invert)
+{
+   FILE *f = fopen( filename, "w" );
+   if (f) {
+      int x, y;
+      const GLubyte *ptr = buffer;
+      fprintf(f,"P6\n");
+      fprintf(f,"# ppm-file created by osdemo.c\n");
+      fprintf(f,"%i %i\n", width,height);
+      fprintf(f,"255\n");
+      fclose(f);
+      f = fopen( filename, "ab" );  /* reopen in binary append mode */
+      for (y=0; y < height; y++) {
+         for (x = 0; x < width; x++) {
+            int yy = invert ? (height - 1 - y) : y;
+            int i = (yy * width + x) * comps;
+            fputc(ptr[i+rcomp], f); /* write red */
+            fputc(ptr[i+gcomp], f); /* write green */
+            fputc(ptr[i+bcomp], f); /* write blue */
+         }
+      }
+      fclose(f);
+   }
+}
+
+
+/**
+ * Write a texture image to a ppm file.
+ * \param face  cube face in [0,5]
+ * \param level  mipmap level
+ */
+static void
+write_texture_image(struct gl_texture_object *texObj,
+                    GLuint face, GLuint level)
+{
+   struct gl_texture_image *img = texObj->Image[face][level];
+   if (img) {
+      GET_CURRENT_CONTEXT(ctx);
+      struct gl_pixelstore_attrib store;
+      GLubyte *buffer;
+      char s[100];
+
+      buffer = (GLubyte *) malloc(img->Width * img->Height
+                                        * img->Depth * 4);
+
+      store = ctx->Pack; /* save */
+      ctx->Pack = ctx->DefaultPacking;
+
+      ctx->Driver.GetTexImage(ctx, texObj->Target, level,
+                              GL_RGBA, GL_UNSIGNED_BYTE,
+                              buffer, texObj, img);
+
+      /* make filename */
+      _mesa_snprintf(s, sizeof(s), "/tmp/tex%u.l%u.f%u.ppm", texObj->Name, level, face);
+
+      printf("  Writing image level %u to %s\n", level, s);
+      write_ppm(s, buffer, img->Width, img->Height, 4, 0, 1, 2, GL_FALSE);
+
+      ctx->Pack = store; /* restore */
+
+      free(buffer);
+   }
+}
+
+
+/**
+ * Write renderbuffer image to a ppm file.
+ */
+static void
+write_renderbuffer_image(const struct gl_renderbuffer *rb)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLubyte *buffer;
+   char s[100];
+   GLenum format, type;
+
+   if (rb->_BaseFormat == GL_RGB || 
+       rb->_BaseFormat == GL_RGBA) {
+      format = GL_RGBA;
+      type = GL_UNSIGNED_BYTE;
+   }
+   else if (rb->_BaseFormat == GL_DEPTH_STENCIL) {
+      format = GL_DEPTH_STENCIL;
+      type = GL_UNSIGNED_INT_24_8;
+   }
+   else {
+      return;
+   }
+
+   buffer = (GLubyte *) malloc(rb->Width * rb->Height * 4);
+
+   ctx->Driver.ReadPixels(ctx, 0, 0, rb->Width, rb->Height,
+                          format, type, &ctx->DefaultPacking, buffer);
+
+   /* make filename */
+   _mesa_snprintf(s, sizeof(s), "/tmp/renderbuffer%u.ppm", rb->Name);
+
+   printf("  Writing renderbuffer image to %s\n", s);
+   write_ppm(s, buffer, rb->Width, rb->Height, 4, 0, 1, 2, GL_TRUE);
+
+   free(buffer);
+}
+
+
+/** How many texture images (mipmap levels, faces) to write to files */
+#define WRITE_NONE 0
+#define WRITE_ONE  1
+#define WRITE_ALL  2
+
+static GLuint WriteImages;
+
+
+static void
+dump_texture(struct gl_texture_object *texObj, GLuint writeImages)
+{
+   const GLuint numFaces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
+   GLboolean written = GL_FALSE;
+   GLuint i, j;
+
+   printf("Texture %u\n", texObj->Name);
+   printf("  Target %s\n", tex_target_name(texObj->Target));
+   for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
+      for (j = 0; j < numFaces; j++) {
+         struct gl_texture_image *texImg = texObj->Image[j][i];
+         if (texImg) {
+            printf("  Face %u level %u: %d x %d x %d, format %s at %p\n",
+		   j, i,
+		   texImg->Width, texImg->Height, texImg->Depth,
+		   _mesa_get_format_name(texImg->TexFormat),
+		   texImg->Data);
+            if (writeImages == WRITE_ALL ||
+                (writeImages == WRITE_ONE && !written)) {
+               write_texture_image(texObj, j, i);
+               written = GL_TRUE;
+            }
+         }
+      }
+   }
+}
+
+
+/**
+ * Dump a single texture.
+ */
+void
+_mesa_dump_texture(GLuint texture, GLuint writeImages)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, texture);
+   if (texObj) {
+      dump_texture(texObj, writeImages);
+   }
+}
+
+
+static void
+dump_texture_cb(GLuint id, void *data, void *userData)
+{
+   struct gl_texture_object *texObj = (struct gl_texture_object *) data;
+   (void) userData;
+   dump_texture(texObj, WriteImages);
+}
+
+
+/**
+ * Print basic info about all texture objext to stdout.
+ * If dumpImages is true, write PPM of level[0] image to a file.
+ */
+void
+_mesa_dump_textures(GLuint writeImages)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   WriteImages = writeImages;
+   _mesa_HashWalk(ctx->Shared->TexObjects, dump_texture_cb, ctx);
+}
+
+
+static void
+dump_renderbuffer(const struct gl_renderbuffer *rb, GLboolean writeImage)
+{
+   printf("Renderbuffer %u: %u x %u  IntFormat = %s\n",
+	  rb->Name, rb->Width, rb->Height,
+	  _mesa_lookup_enum_by_nr(rb->InternalFormat));
+   if (writeImage) {
+      write_renderbuffer_image(rb);
+   }
+}
+
+
+static void
+dump_renderbuffer_cb(GLuint id, void *data, void *userData)
+{
+   const struct gl_renderbuffer *rb = (const struct gl_renderbuffer *) data;
+   (void) userData;
+   dump_renderbuffer(rb, WriteImages);
+}
+
+
+/**
+ * Print basic info about all renderbuffers to stdout.
+ * If dumpImages is true, write PPM of level[0] image to a file.
+ */
+void
+_mesa_dump_renderbuffers(GLboolean writeImages)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   WriteImages = writeImages;
+   _mesa_HashWalk(ctx->Shared->RenderBuffers, dump_renderbuffer_cb, ctx);
+}
+
+
+
+void
+_mesa_dump_color_buffer(const char *filename)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint w = ctx->DrawBuffer->Width;
+   const GLuint h = ctx->DrawBuffer->Height;
+   GLubyte *buf;
+
+   buf = (GLubyte *) malloc(w * h * 4);
+
+   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
+   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
+   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
+
+   _mesa_ReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buf);
+
+   printf("ReadBuffer %p 0x%x  DrawBuffer %p 0x%x\n",
+	  (void *) ctx->ReadBuffer->_ColorReadBuffer,
+	  ctx->ReadBuffer->ColorReadBuffer,
+	  (void *) ctx->DrawBuffer->_ColorDrawBuffers[0],
+	  ctx->DrawBuffer->ColorDrawBuffer[0]);
+   printf("Writing %d x %d color buffer to %s\n", w, h, filename);
+   write_ppm(filename, buf, w, h, 4, 0, 1, 2, GL_TRUE);
+
+   _mesa_PopClientAttrib();
+
+   free(buf);
+}
+
+
+void
+_mesa_dump_depth_buffer(const char *filename)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint w = ctx->DrawBuffer->Width;
+   const GLuint h = ctx->DrawBuffer->Height;
+   GLuint *buf;
+   GLubyte *buf2;
+   GLuint i;
+
+   buf = (GLuint *) malloc(w * h * 4);  /* 4 bpp */
+   buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */
+
+   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
+   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
+   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
+
+   _mesa_ReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buf);
+
+   /* spread 24 bits of Z across R, G, B */
+   for (i = 0; i < w * h; i++) {
+      buf2[i*3+0] = (buf[i] >> 24) & 0xff;
+      buf2[i*3+1] = (buf[i] >> 16) & 0xff;
+      buf2[i*3+2] = (buf[i] >>  8) & 0xff;
+   }
+
+   printf("Writing %d x %d depth buffer to %s\n", w, h, filename);
+   write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
+
+   _mesa_PopClientAttrib();
+
+   free(buf);
+   free(buf2);
+}
+
+
+void
+_mesa_dump_stencil_buffer(const char *filename)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint w = ctx->DrawBuffer->Width;
+   const GLuint h = ctx->DrawBuffer->Height;
+   GLubyte *buf;
+   GLubyte *buf2;
+   GLuint i;
+
+   buf = (GLubyte *) malloc(w * h);  /* 1 bpp */
+   buf2 = (GLubyte *) malloc(w * h * 3); /* 3 bpp */
+
+   _mesa_PushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
+   _mesa_PixelStorei(GL_PACK_ALIGNMENT, 1);
+   _mesa_PixelStorei(GL_PACK_INVERT_MESA, GL_TRUE);
+
+   _mesa_ReadPixels(0, 0, w, h, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, buf);
+
+   for (i = 0; i < w * h; i++) {
+      buf2[i*3+0] = buf[i];
+      buf2[i*3+1] = (buf[i] & 127) * 2;
+      buf2[i*3+2] = (buf[i] - 128) * 2;
+   }
+
+   printf("Writing %d x %d stencil buffer to %s\n", w, h, filename);
+   write_ppm(filename, buf2, w, h, 3, 0, 1, 2, GL_TRUE);
+
+   _mesa_PopClientAttrib();
+
+   free(buf);
+   free(buf2);
+}
+
+
+/**
+ * Quick and dirty function to "print" a texture to stdout.
+ */
+void
+_mesa_print_texture(struct gl_context *ctx, const struct gl_texture_image *img)
+{
+#if CHAN_TYPE != GL_UNSIGNED_BYTE
+   _mesa_problem(NULL, "PrintTexture not supported");
+#else
+   GLuint i, j, c;
+   const GLubyte *data = (const GLubyte *) img->Data;
+
+   if (!data) {
+      printf("No texture data\n");
+      return;
+   }
+
+   /* XXX add more formats or make into a new format utility function */
+   switch (img->TexFormat) {
+      case MESA_FORMAT_A8:
+      case MESA_FORMAT_L8:
+      case MESA_FORMAT_I8:
+      case MESA_FORMAT_CI8:
+         c = 1;
+         break;
+      case MESA_FORMAT_AL88:
+      case MESA_FORMAT_AL88_REV:
+         c = 2;
+         break;
+      case MESA_FORMAT_RGB888:
+      case MESA_FORMAT_BGR888:
+         c = 3;
+         break;
+      case MESA_FORMAT_RGBA8888:
+      case MESA_FORMAT_ARGB8888:
+         c = 4;
+         break;
+      default:
+         _mesa_problem(NULL, "error in PrintTexture\n");
+         return;
+   }
+
+   for (i = 0; i < img->Height; i++) {
+      for (j = 0; j < img->Width; j++) {
+         if (c==1)
+            printf("%02x  ", data[0]);
+         else if (c==2)
+            printf("%02x%02x  ", data[0], data[1]);
+         else if (c==3)
+            printf("%02x%02x%02x  ", data[0], data[1], data[2]);
+         else if (c==4)
+            printf("%02x%02x%02x%02x  ", data[0], data[1], data[2], data[3]);
+         data += (img->RowStride - img->Width) * c;
+      }
+      /* XXX use img->ImageStride here */
+      printf("\n");
+   }
+#endif
+}