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/*

 * Mesa 3-D graphics library

 *

 * 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

 * THE AUTHORS OR COPYRIGHT HOLDERS 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" },

      { GL_TEXTURE_CUBE_MAP_ARRAY, "GL_TEXTURE_CUBE_MAP_ARRAY" },

      { GL_TEXTURE_BUFFER, "GL_TEXTURE_BUFFER" },

      { GL_TEXTURE_2D_MULTISAMPLE, "GL_TEXTURE_2D_MULTISAMPLE" },

      { GL_TEXTURE_2D_MULTISAMPLE_ARRAY, "GL_TEXTURE_2D_MULTISAMPLE_ARRAY" },

      { GL_TEXTURE_EXTERNAL_OES, "GL_TEXTURE_EXTERNAL_OES" }

   };

   GLuint i;

   STATIC_ASSERT(Elements(tex_targets) == NUM_TEXTURE_TARGETS);

   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\n",

	   msg,

	   state,

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

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

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

	   (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_ARRAY)           ? "ctx->Array, " : "",

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

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

}

/**

 * 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 verbose logging flags.  When these flags are set, GL API calls

 * in the various categories will be printed to stderr.

 * \param str  a comma-separated list of keywords

 */

static void

set_verbose_flags(const char *str)

{

#ifdef DEBUG

   MESA_VERBOSE = VERBOSE_TEXTURE;

   struct option {

      const char *name;

      GLbitfield flag;

   };

   static const struct option opts[] = {

      { "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;

   if (!str)

      return;

   MESA_VERBOSE = 0x0;

   for (i = 0; i < Elements(opts); i++) {

      if (strstr(str, opts[i].name) || strcmp(str, "all") == 0)

         MESA_VERBOSE |= opts[i].flag;

   }

   MESA_VERBOSE|= VERBOSE_TEXTURE;

#endif

}

/**

 * Set debugging flags.  When these flags are set, Mesa will do additional

 * debug checks or actions.

 * \param str  a comma-separated list of keywords

 */

static void

set_debug_flags(const char *str)

{

#ifdef DEBUG

   MESA_DEBUG_FLAGS = DEBUG_INCOMPLETE_TEXTURE|DEBUG_INCOMPLETE_FBO;

   struct option {

      const char *name;

      GLbitfield flag;

   };

   static const struct option opts[] = {

      { "silent", DEBUG_SILENT }, /* turn off debug messages */

      { "flush", DEBUG_ALWAYS_FLUSH }, /* flush after each drawing command */

      { "incomplete_tex", DEBUG_INCOMPLETE_TEXTURE },

      { "incomplete_fbo", DEBUG_INCOMPLETE_FBO }

   };

   GLuint i;

   if (!str)

      return;

   MESA_DEBUG_FLAGS = 0x0;

   for (i = 0; i < Elements(opts); i++) {

      if (strstr(str, opts[i].name))

         MESA_DEBUG_FLAGS |= opts[i].flag;

   }

   MESA_DEBUG_FLAGS = DEBUG_INCOMPLETE_TEXTURE|DEBUG_INCOMPLETE_FBO;

#endif

}

/**

 * Initialize debugging variables from env vars.

 */

void

_mesa_init_debug( struct gl_context *ctx )

{

   set_debug_flags(_mesa_getenv("MESA_DEBUG"));

   set_verbose_flags(_mesa_getenv("MESA_VERBOSE"));

}

/*

 * 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);

   }

   else {

      fprintf(stderr, "Unable to create %s in write_ppm()\n", filename);

   }

}

/**

 * 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 = malloc(img->Width * img->Height

                                        * img->Depth * 4);

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

      ctx->Pack = ctx->DefaultPacking;

      ctx->Driver.GetTexImage(ctx, GL_RGBA, GL_UNSIGNED_BYTE, buffer, 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.

 */

void

_mesa_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 {

      _mesa_debug(NULL,

                  "Unsupported BaseFormat 0x%x in "

                  "_mesa_write_renderbuffer_image()\n",

                  rb->_BaseFormat);

      return;

   }

   buffer = 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);

   _mesa_snprintf(s, sizeof(s), "C:\\renderbuffer%u.ppm", rb->Name);

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

   _mesa_debug(NULL, "  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\n",

		   j, i,

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

		   _mesa_get_format_name(texImg->TexFormat));

            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) {

      _mesa_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 = 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 = malloc(w * h * 4);  /* 4 bpp */

   buf2 = 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 = malloc(w * h);  /* 1 bpp */

   buf2 = 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);

}

void

_mesa_dump_image(const char *filename, const void *image, GLuint w, GLuint h,

                 GLenum format, GLenum type)

{

   GLboolean invert = GL_TRUE;

   if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {

      write_ppm(filename, image, w, h, 4, 0, 1, 2, invert);

   }

   else if (format == GL_BGRA && type == GL_UNSIGNED_BYTE) {

      write_ppm(filename, image, w, h, 4, 2, 1, 0, invert);

   }

   else if (format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE) {

      write_ppm(filename, image, w, h, 2, 1, 0, 0, invert);

   }

   else if (format == GL_RED && type == GL_UNSIGNED_BYTE) {

      write_ppm(filename, image, w, h, 1, 0, 0, 0, invert);

   }

   else if (format == GL_RGBA && type == GL_FLOAT) {

      /* convert floats to ubyte */

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

      const GLfloat *f = (const GLfloat *) image;

      GLuint i;

      for (i = 0; i < w * h * 4; i++) {

         UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);

      }

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

      free(buf);

   }

   else if (format == GL_RED && type == GL_FLOAT) {

      /* convert floats to ubyte */

      GLubyte *buf = malloc(w * h * sizeof(GLubyte));

      const GLfloat *f = (const GLfloat *) image;

      GLuint i;

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

         UNCLAMPED_FLOAT_TO_UBYTE(buf[i], f[i]);

      }

      write_ppm(filename, buf, w, h, 1, 0, 0, 0, invert);

      free(buf);

   }

   else {

      _mesa_problem(NULL,

                 "Unsupported format 0x%x / type 0x%x in _mesa_dump_image()",

                 format, type);

   }

}

/**

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

 */

void

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

{

   const GLint slice = 0;

   GLint srcRowStride;

   GLuint i, j, c;

   GLubyte *data;

   ctx->Driver.MapTextureImage(ctx, img, slice,

                               0, 0, img->Width, img->Height, GL_MAP_READ_BIT,

                               &data, &srcRowStride);

   if (!data) {

      printf("No texture data\n");

   }

   else {

      /* 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:

            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 += (srcRowStride - img->Width) * c;

         }

         /* XXX use img->ImageStride here */

         printf("\n");

      }

   }

   ctx->Driver.UnmapTextureImage(ctx, img, slice);

}