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 #ifndef I915
  45 #include "brw_context.h"
  46 #endif
  47
  48 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  49
  50
  51 bool
  52 intel_copy_texsubimage(struct intel_context *intel,
  53                        struct intel_texture_image *intelImage,
  54                        GLint dstx, GLint dsty,
  55                        struct intel_renderbuffer *irb,
  56                        GLint x, GLint y, GLsizei width, GLsizei height)
  57 {
  58    struct gl_context *ctx = &intel->ctx;
  59    const GLenum internalFormat = intelImage->base.Base.InternalFormat;
  60    bool copy_supported = false;
  61    bool copy_supported_with_alpha_override = false;
  62
  63    intel_prepare_render(intel);
  64
  65    /* glCopyTexSubImage() can't be called on multisampled renderbuffers or
  66     * textures.
  67     */
  68    assert(!irb->Base.Base.NumSamples);
  69    assert(!intelImage->base.Base.NumSamples);
  70
  71    if (!intelImage->mt || !irb || !irb->mt) {
  72       if (unlikely(INTEL_DEBUG & DEBUG_PERF))
  73          fprintf(stderr, "%s fail %p %p (0x%08x)\n",
  74                  __FUNCTION__, intelImage->mt, irb, internalFormat);
  75       return false;
  76    }
  77
  78    if (intelImage->base.Base.TexObject->Target == GL_TEXTURE_1D_ARRAY ||
  79        intelImage->base.Base.TexObject->Target == GL_TEXTURE_2D_ARRAY) {
  80       perf_debug("no support for array textures\n");
  81    }
  82
  83    /* glCopyTexImage (and the glBlitFramebuffer() path that reuses this)
  84     * doesn't do any sRGB conversions.
  85     */
  86    gl_format src_format = _mesa_get_srgb_format_linear(intel_rb_format(irb));
  87    gl_format dst_format = _mesa_get_srgb_format_linear(intelImage->base.Base.TexFormat);
  88
  89    copy_supported = src_format == dst_format;
  90
  91    /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
  92    if (src_format == MESA_FORMAT_ARGB8888 &&
  93        dst_format == MESA_FORMAT_XRGB8888) {
  94       copy_supported = true;
  95    }
  96
  97    /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
  98    if (src_format == MESA_FORMAT_XRGB8888 &&
  99        dst_format == MESA_FORMAT_ARGB8888) {
 100       copy_supported_with_alpha_override = true;
 101    }
 102
 103    if (!copy_supported && !copy_supported_with_alpha_override) {
 104       perf_debug("%s mismatched formats %s, %s\n",
 105                  __FUNCTION__,
 106                  _mesa_get_format_name(intelImage->base.Base.TexFormat),
 107                  _mesa_get_format_name(intel_rb_format(irb)));
 108       return false;
 109    }
 110
 111    /* blit from src buffer to texture */
 112    if (!intel_miptree_blit(intel,
 113                            irb->mt, irb->mt_level, irb->mt_layer,
 114                            x, y, irb->Base.Base.Name == 0,
 115                            intelImage->mt, intelImage->base.Base.Level,
 116                            intelImage->base.Base.Face,
 117                            dstx, dsty, false,
 118                            width, height, GL_COPY)) {
 119       return false;
 120    }
 121
 122    if (copy_supported_with_alpha_override)
 123       intel_set_teximage_alpha_to_one(ctx, intelImage);
 124
 125    return true;
 126 }
 127
 128
 129 static void
 130 intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
 131                      struct gl_texture_image *texImage,
 132                      GLint xoffset, GLint yoffset, GLint zoffset,
 133                      struct gl_renderbuffer *rb,
 134                      GLint x, GLint y,
 135                      GLsizei width, GLsizei height)
 136 {
 137    struct intel_context *intel = intel_context(ctx);
 138    if (dims != 3) {
 139 #ifndef I915
 140       /* Try BLORP first.  It can handle almost everything. */
 141       if (brw_blorp_copytexsubimage(intel, rb, texImage, x, y,
 142                                     xoffset, yoffset, width, height))
 143          return;
 144 #endif
 145
 146       /* Next, try the BLT engine. */
 147       if (intel_copy_texsubimage(intel,
 148                                  intel_texture_image(texImage),
 149                                  xoffset, yoffset,
 150                                  intel_renderbuffer(rb), x, y, width, height))
 151          return;
 152    }
 153
 154    /* Finally, fall back to meta.  This will likely be slow. */
 155    perf_debug("%s - fallback to swrast\n", __FUNCTION__);
 156    _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
 157                               xoffset, yoffset, zoffset,
 158                               rb, x, y, width, height);
 159 }
 160
 161
 162 void
 163 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 164 {
 165    functions->CopyTexSubImage = intelCopyTexSubImage;
 166 }