intel_tex.c

mesa-6.5-minigui源码

{
   driTextureObject * t = (driTextureObject *) tObj->DriverData;

   if ( t != NULL ) {
      intelFlush( ctx );
      driDestroyTextureObject( t );
   }
   
   /* Free mipmap images and the texture object itself */
   _mesa_delete_texture_object(ctx, tObj);
}


static const struct gl_texture_format *
intelChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
			 GLenum format, GLenum type )
{
   intelContextPtr intel = INTEL_CONTEXT( ctx );
   const GLboolean do32bpt = ( intel->intelScreen->cpp == 4 &&
			       intel->intelScreen->tex.size > 4*1024*1024);

   switch ( internalFormat ) {
   case 4:
   case GL_RGBA:
   case GL_COMPRESSED_RGBA:
      if ( format == GL_BGRA ) {
	 if ( type == GL_UNSIGNED_INT_8_8_8_8_REV ) {
	    return &_mesa_texformat_argb8888;
	 }
         else if ( type == GL_UNSIGNED_SHORT_4_4_4_4_REV ) {
            return &_mesa_texformat_argb4444;
	 }
         else if ( type == GL_UNSIGNED_SHORT_1_5_5_5_REV ) {
	    return &_mesa_texformat_argb1555;
	 }
      }
      return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;

   case 3:
   case GL_RGB:
   case GL_COMPRESSED_RGB:
      if ( format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 ) {
	 return &_mesa_texformat_rgb565;
      }
      return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_rgb565;

   case GL_RGBA8:
   case GL_RGB10_A2:
   case GL_RGBA12:
   case GL_RGBA16:
      return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;

   case GL_RGBA4:
   case GL_RGBA2:
      return &_mesa_texformat_argb4444;

   case GL_RGB5_A1:
      return &_mesa_texformat_argb1555;

   case GL_RGB8:
   case GL_RGB10:
   case GL_RGB12:
   case GL_RGB16:
      return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_rgb565;

   case GL_RGB5:
   case GL_RGB4:
   case GL_R3_G3_B2:
      return &_mesa_texformat_rgb565;

   case GL_ALPHA:
   case GL_ALPHA4:
   case GL_ALPHA8:
   case GL_ALPHA12:
   case GL_ALPHA16:
   case GL_COMPRESSED_ALPHA:
      return &_mesa_texformat_a8;

   case 1:
   case GL_LUMINANCE:
   case GL_LUMINANCE4:
   case GL_LUMINANCE8:
   case GL_LUMINANCE12:
   case GL_LUMINANCE16:
   case GL_COMPRESSED_LUMINANCE:
      return &_mesa_texformat_l8;

   case 2:
   case GL_LUMINANCE_ALPHA:
   case GL_LUMINANCE4_ALPHA4:
   case GL_LUMINANCE6_ALPHA2:
   case GL_LUMINANCE8_ALPHA8:
   case GL_LUMINANCE12_ALPHA4:
   case GL_LUMINANCE12_ALPHA12:
   case GL_LUMINANCE16_ALPHA16:
   case GL_COMPRESSED_LUMINANCE_ALPHA:
      return &_mesa_texformat_al88;

   case GL_INTENSITY:
   case GL_INTENSITY4:
   case GL_INTENSITY8:
   case GL_INTENSITY12:
   case GL_INTENSITY16:
   case GL_COMPRESSED_INTENSITY:
      return &_mesa_texformat_i8;

   case GL_YCBCR_MESA:
      if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
	  type == GL_UNSIGNED_BYTE)
         return &_mesa_texformat_ycbcr;
      else
         return &_mesa_texformat_ycbcr_rev;

   case GL_COMPRESSED_RGB_FXT1_3DFX:
     return &_mesa_texformat_rgb_fxt1;
   case GL_COMPRESSED_RGBA_FXT1_3DFX:
     return &_mesa_texformat_rgba_fxt1;

   case GL_RGB_S3TC:
   case GL_RGB4_S3TC:
   case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
     return &_mesa_texformat_rgb_dxt1;

   case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
     return &_mesa_texformat_rgba_dxt1;

   case GL_RGBA_S3TC:
   case GL_RGBA4_S3TC:
   case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
     return &_mesa_texformat_rgba_dxt3;

   case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
      return &_mesa_texformat_rgba_dxt5;

   case GL_DEPTH_COMPONENT:
   case GL_DEPTH_COMPONENT16:
   case GL_DEPTH_COMPONENT24:
   case GL_DEPTH_COMPONENT32:
      return &_mesa_texformat_depth_component16;

   default:
      fprintf(stderr, "unexpected texture format %s in %s\n", 
	      _mesa_lookup_enum_by_nr(internalFormat),
	      __FUNCTION__);
      return NULL;
   }

   return NULL; /* never get here */
}



void intelDestroyTexObj(intelContextPtr intel, intelTextureObjectPtr t)
{
   unsigned   i;

   if ( intel == NULL ) 
      return;

   if ( t->age > intel->dirtyAge )
      intel->dirtyAge = t->age;

   for ( i = 0 ; i < MAX_TEXTURE_UNITS ; i++ ) {
      if ( t == intel->CurrentTexObj[ i ] ) 
	 intel->CurrentTexObj[ i ] = NULL;
   }
}



/* Upload an image from mesa's internal copy.  Image may be 1D, 2D or
 * 3D.  Cubemaps are expanded elsewhere.
 */
static void intelUploadTexImage( intelContextPtr intel,
				 intelTextureObjectPtr t,
				 const struct gl_texture_image *image,
				 const GLuint offset )
{

   if (!image || !image->Data) 
      return;

   if (image->Depth == 1 && image->IsClientData) {
      if (INTEL_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "Blit uploading\n");

      /* Do it with a blit.
       */
      intelEmitCopyBlitLocked( intel,
			       image->TexFormat->TexelBytes,
			       image->RowStride, /* ? */
			       intelGetMemoryOffsetMESA( NULL, 0, image->Data ),
			       t->Pitch / image->TexFormat->TexelBytes,
			       intelGetMemoryOffsetMESA( NULL, 0, t->BufAddr + offset ),
			       0, 0,
			       0, 0,
			       image->Width,
			       image->Height);
   }
   else if (image->IsCompressed) {
      GLuint row_len = image->Width * 2;
      GLubyte *dst = (GLubyte *)(t->BufAddr + offset);
      GLubyte *src = (GLubyte *)image->Data;
      GLuint j;

      if (INTEL_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, 
		 "Upload image %dx%dx%d offset %xm row_len %x "
		 "pitch %x depth_pitch %x\n",
		 image->Width, image->Height, image->Depth, offset,
		 row_len, t->Pitch, t->depth_pitch);

      switch (image->InternalFormat) {
	case GL_COMPRESSED_RGB_FXT1_3DFX:
	case GL_COMPRESSED_RGBA_FXT1_3DFX:
	case GL_RGB_S3TC:
	case GL_RGB4_S3TC:
	case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
	case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
	  for (j = 0 ; j < image->Height/4 ; j++, dst += (t->Pitch)) {
	    __memcpy(dst, src, row_len );
	    src += row_len;
	  }
	  break;
	case GL_RGBA_S3TC:
	case GL_RGBA4_S3TC:
	case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
	case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
	  for (j = 0 ; j < image->Height/4 ; j++, dst += (t->Pitch)) {
	    __memcpy(dst, src, (image->Width*4) );
	    src += image->Width*4;
	  }
	  break;
	default:
	  fprintf(stderr,"Internal Compressed format not supported %d\n", image->InternalFormat);
	  break;
      }
   }
   /* Time for another vtbl entry:
    */
   else if (intel->intelScreen->deviceID == PCI_CHIP_I945_G ||
            intel->intelScreen->deviceID == PCI_CHIP_I945_GM) {
      GLuint row_len = image->Width * image->TexFormat->TexelBytes;
      GLubyte *dst = (GLubyte *)(t->BufAddr + offset);
      GLubyte *src = (GLubyte *)image->Data;
      GLuint d, j;

      if (INTEL_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, 
		 "Upload image %dx%dx%d offset %xm row_len %x "
		 "pitch %x depth_pitch %x\n",
		 image->Width, image->Height, image->Depth, offset,
		 row_len, t->Pitch, t->depth_pitch);

      if (row_len == t->Pitch) {
	 memcpy( dst, src, row_len * image->Height * image->Depth );
      }
      else { 
	 GLuint x = 0, y = 0;

	 for (d = 0 ; d < image->Depth ; d++) {
	    GLubyte *dst0 = dst + x + y * t->Pitch;

	    for (j = 0 ; j < image->Height ; j++) {
	       __memcpy(dst0, src, row_len );
	       src += row_len;
	       dst0 += t->Pitch;
	    }

	    x += MIN2(4, row_len); /* Guess: 4 byte minimum alignment */
	    if (x > t->Pitch) {
	       x = 0;
	       y += image->Height;
	    }
	 }
      }

   }
   else {
      GLuint row_len = image->Width * image->TexFormat->TexelBytes;
      GLubyte *dst = (GLubyte *)(t->BufAddr + offset);
      GLubyte *src = (GLubyte *)image->Data;
      GLuint d, j;

      if (INTEL_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, 
		 "Upload image %dx%dx%d offset %xm row_len %x "
		 "pitch %x depth_pitch %x\n",
		 image->Width, image->Height, image->Depth, offset,
		 row_len, t->Pitch, t->depth_pitch);

      if (row_len == t->Pitch) {
	 for (d = 0; d < image->Depth; d++) {
	    memcpy( dst, src, t->Pitch * image->Height );
	    dst += t->depth_pitch;
	    src += row_len * image->Height;
	 }
      }
      else { 
	 for (d = 0 ; d < image->Depth ; d++) {
	    for (j = 0 ; j < image->Height ; j++) {
	       __memcpy(dst, src, row_len );
	       src += row_len;
	       dst += t->Pitch;
	    }

	    dst += t->depth_pitch - (t->Pitch * image->Height);
	 }
      }
   }
}



int intelUploadTexImages( intelContextPtr intel, 
			  intelTextureObjectPtr t,
			  GLuint face)
{
   const int numLevels = t->base.lastLevel - t->base.firstLevel + 1;
   const struct gl_texture_image *firstImage = t->image[face][t->base.firstLevel].image;
   int pitch = firstImage->RowStride * firstImage->TexFormat->TexelBytes;

   /* Can we texture out of the existing client data? */
   if ( numLevels == 1 &&
	firstImage->IsClientData &&
	(pitch & 3) == 0) {

      if (INTEL_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, "AGP texturing from client memory\n");

      t->TextureOffset = intelAgpOffsetFromVirtual( intel, firstImage->Data );
      t->BufAddr = 0;
      t->dirty = ~0;
      return GL_TRUE;
   }
   else {
      if (INTEL_DEBUG & DEBUG_TEXTURE) 
	 fprintf(stderr, "Uploading client data to agp\n");

      INTEL_FIREVERTICES( intel );
      LOCK_HARDWARE( intel );

      if ( t->base.memBlock == NULL ) {
	 int heap;

	 heap = driAllocateTexture( intel->texture_heaps, intel->nr_heaps,
				    (driTextureObject *) t );
	 if ( heap == -1 ) {
	    UNLOCK_HARDWARE( intel );
	    return GL_FALSE;
	 }

	 /* Set the base offset of the texture image */
	 t->BufAddr = intel->intelScreen->tex.map + t->base.memBlock->ofs;
	 t->TextureOffset = intel->intelScreen->tex.offset + t->base.memBlock->ofs;
	 t->dirty = ~0;
      }


      /* Let the world know we've used this memory recently.
       */
      driUpdateTextureLRU( (driTextureObject *) t );


      /* Upload any images that are new */
      if (t->base.dirty_images[face]) {
	 int i;

 	 intelWaitForIdle( intel );
	    
	 for (i = 0 ; i < numLevels ; i++) { 
	    int level = i + t->base.firstLevel;

	    if (t->base.dirty_images[face] & (1<<level)) {

	       const struct gl_texture_image *image = t->image[face][i].image;
	       GLuint offset = t->image[face][i].offset;

     	       if (INTEL_DEBUG & DEBUG_TEXTURE)
	          fprintf(stderr, "upload level %d, offset %x\n", 
			  level, offset);

	       intelUploadTexImage( intel, t, image, offset );
	    }
	 }
	 t->base.dirty_images[face] = 0;
	 intel->perf_boxes |= I830_BOX_TEXTURE_LOAD;
      }
      
      UNLOCK_HARDWARE( intel );
      return GL_TRUE;
   }
}

/**
 * Allocate a new texture object.
 * Called via ctx->Driver.NewTextureObject.
 * Note: this function will be called during context creation to
 * allocate the default texture objects.
 * Note: we could use containment here to 'derive' the driver-specific
 * texture object from the core mesa gl_texture_object.  Not done at this time.
 */
static struct gl_texture_object *
intelNewTextureObject( GLcontext *ctx, GLuint name, GLenum target )
{
   struct gl_texture_object *obj = _mesa_new_texture_object(ctx, name, target);
   INTEL_CONTEXT(ctx)->vtbl.alloc_tex_obj( obj );
   return obj;
}


void intelInitTextureFuncs( struct dd_function_table *functions )
{
   functions->NewTextureObject          = intelNewTextureObject;
   functions->ChooseTextureFormat       = intelChooseTextureFormat;
   functions->TexImage1D                = intelTexImage1D;
   functions->TexImage2D                = intelTexImage2D;
   functions->TexImage3D                = intelTexImage3D;
   functions->TexSubImage1D             = intelTexSubImage1D;
   functions->TexSubImage2D             = intelTexSubImage2D;
   functions->TexSubImage3D             = intelTexSubImage3D;
   functions->CopyTexImage1D            = _swrast_copy_teximage1d;
   functions->CopyTexImage2D            = _swrast_copy_teximage2d;
   functions->CopyTexSubImage1D         = _swrast_copy_texsubimage1d;
   functions->CopyTexSubImage2D         = _swrast_copy_texsubimage2d;
   functions->CopyTexSubImage3D         = _swrast_copy_texsubimage3d;
   functions->DeleteTexture             = intelDeleteTexture;
   functions->UpdateTexturePalette      = NULL;
   functions->IsTextureResident         = driIsTextureResident;
   functions->TestProxyTexImage         = _mesa_test_proxy_teximage;
   functions->DeleteTexture             = intelDeleteTexture;
   functions->CompressedTexImage2D      = intelCompressedTexImage2D;
   functions->CompressedTexSubImage2D   = intelCompressedTexSubImage2D;
}