src/mesa/drivers/dri/intel/intel_tex_copy.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/mtypes.h"
  29 #include "main/enums.h"
  30 #include "main/image.h"
  31 #include "main/teximage.h"
  32 #include "main/texstate.h"
  33 #include "main/fbobject.h"
  34
  35 #include "drivers/common/meta.h"
  36
  37 #include "intel_screen.h"
  38 #include "intel_context.h"
  39 #include "intel_mipmap_tree.h"
  40 #include "intel_regions.h"
  41 #include "intel_fbo.h"
  42 #include "intel_tex.h"
  43 #include "intel_blit.h"
  44
  45 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  46
  47
  48 bool
  49 intel_copy_texsubimage(struct intel_context *intel,
  50                        struct intel_texture_image *intelImage,
  51                        GLint dstx, GLint dsty,
  52                        struct intel_renderbuffer *irb,
  53                        GLint x, GLint y, GLsizei width, GLsizei height)
  54 {
  55    struct gl_context *ctx = &intel->ctx;
  56    struct intel_region *region;
  57    const GLenum internalFormat = intelImage->base.Base.InternalFormat;
  58    bool copy_supported = false;
  59    bool copy_supported_with_alpha_override = false;
  60
  61    intel_prepare_render(intel);
  62
  63    if (!intelImage->mt || !irb || !irb->mt) {
  64       if (unlikely(INTEL_DEBUG & DEBUG_PERF))
  65          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  66                  __FUNCTION__, intelImage->mt, irb, internalFormat);
  67       return false;
  68    } else {
  69       region = irb->mt->region;
  70       assert(region);
  71    }
  72
  73    copy_supported = intelImage->base.Base.TexFormat == intel_rb_format(irb);
  74
  75    /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
  76    if (intel_rb_format(irb) == MESA_FORMAT_ARGB8888 &&
  77        intelImage->base.Base.TexFormat == MESA_FORMAT_XRGB8888) {
  78       copy_supported = true;
  79    }
  80
  81    /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
  82    if (intel_rb_format(irb) == MESA_FORMAT_XRGB8888 &&
  83        intelImage->base.Base.TexFormat == MESA_FORMAT_ARGB8888) {
  84       copy_supported_with_alpha_override = true;
  85    }
  86
  87    if (!copy_supported && !copy_supported_with_alpha_override) {
  88       if (unlikely(INTEL_DEBUG & DEBUG_PERF))
  89          fprintf(stderr, "%s mismatched formats %s, %s\n",
  90                  __FUNCTION__,
  91                  _mesa_get_format_name(intelImage->base.Base.TexFormat),
  92                  _mesa_get_format_name(intel_rb_format(irb)));
  93       return false;
  94    }
  95
  96    {
  97       GLuint image_x, image_y;
  98       GLshort src_pitch;
  99
 100       /* get dest x/y in destination texture */
 101       intel_miptree_get_image_offset(intelImage->mt,
 102                                      intelImage->base.Base.Level,
 103                                      intelImage->base.Base.Face,
 104                                      0,
 105                                      &image_x, &image_y);
 106
 107       /* The blitter can't handle Y-tiled buffers. */
 108       if (intelImage->mt->region->tiling == I915_TILING_Y) {
 109          return false;
 110       }
 111
 112       if (_mesa_is_winsys_fbo(ctx->ReadBuffer)) {
 113          /* Flip vertical orientation for system framebuffers */
 114          y = ctx->ReadBuffer->Height - (y + height);
 115          src_pitch = -region->pitch;
 116       } else {
 117          /* reading from a FBO, y is already oriented the way we like */
 118          src_pitch = region->pitch;
 119       }
 120
 121       /* blit from src buffer to texture */
 122       if (!intelEmitCopyBlit(intel,
 123                              intelImage->mt->cpp,
 124                              src_pitch,
 125                              region->bo,
 126                              0,
 127                              region->tiling,
 128                              intelImage->mt->region->pitch,
 129                              intelImage->mt->region->bo,
 130                              0,
 131                              intelImage->mt->region->tiling,
 132                              irb->draw_x + x, irb->draw_y + y,
 133                              image_x + dstx, image_y + dsty,
 134                              width, height,
 135                              GL_COPY)) {
 136          return false;
 137       }
 138    }
 139
 140    if (copy_supported_with_alpha_override)
 141       intel_set_teximage_alpha_to_one(ctx, intelImage);
 142
 143    return true;
 144 }
 145
 146
 147 static void
 148 intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
 149                      struct gl_texture_image *texImage,
 150                      GLint xoffset, GLint yoffset, GLint zoffset,
 151                      struct gl_renderbuffer *rb,
 152                      GLint x, GLint y,
 153                      GLsizei width, GLsizei height)
 154 {
 155    if (dims == 3 || !intel_copy_texsubimage(intel_context(ctx),
 156                                intel_texture_image(texImage),
 157                                xoffset, yoffset,
 158                                intel_renderbuffer(rb), x, y, width, height)) {
 159       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
 160       _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
 161                                  xoffset, yoffset, zoffset,
 162                                  rb, x, y, width, height);
 163    }
 164 }
 165
 166
 167 void
 168 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 169 {
 170    functions->CopyTexSubImage = intelCopyTexSubImage;
 171 }