intel_tex_copy.c revision 56b57aa360a8bad0c4b68fbdf7c64ac33f9e7661 
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
34#include "drivers/common/meta.h"
35
36#include "intel_screen.h"
37#include "intel_context.h"
38#include "intel_mipmap_tree.h"
39#include "intel_regions.h"
40#include "intel_fbo.h"
41#include "intel_tex.h"
42#include "intel_blit.h"
43
44#define FILE_DEBUG_FLAG DEBUG_TEXTURE
45
46
47bool
48intel_copy_texsubimage(struct intel_context *intel,
49                       struct intel_texture_image *intelImage,
50                       GLint dstx, GLint dsty,
51                       struct intel_renderbuffer *irb,
52                       GLint x, GLint y, GLsizei width, GLsizei height)
53{
54   struct gl_context *ctx = &intel->ctx;
55   struct intel_region *region;
56   const GLenum internalFormat = intelImage->base.Base.InternalFormat;
57   bool copy_supported = false;
58   bool copy_supported_with_alpha_override = false;
59
60   intel_prepare_render(intel);
61
62   if (!intelImage->mt || !irb || !irb->mt) {
63      if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
64	 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
65		 __FUNCTION__, intelImage->mt, irb, internalFormat);
66      return false;
67   } else {
68      region = irb->mt->region;
69      assert(region);
70   }
71
72   copy_supported = intelImage->base.Base.TexFormat == irb->Base.Format;
73
74   /* Converting ARGB8888 to XRGB8888 is trivial: ignore the alpha bits */
75   if (irb->Base.Format == MESA_FORMAT_ARGB8888 &&
76       intelImage->base.Base.TexFormat == MESA_FORMAT_XRGB8888) {
77      copy_supported = true;
78   }
79
80   /* Converting XRGB8888 to ARGB8888 requires setting the alpha bits to 1.0 */
81   if (irb->Base.Format == MESA_FORMAT_XRGB8888 &&
82       intelImage->base.Base.TexFormat == MESA_FORMAT_ARGB8888) {
83      copy_supported_with_alpha_override = true;
84   }
85
86   if (!copy_supported && !copy_supported_with_alpha_override) {
87      if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))
88	 fprintf(stderr, "%s mismatched formats %s, %s\n",
89		 __FUNCTION__,
90		 _mesa_get_format_name(intelImage->base.Base.TexFormat),
91		 _mesa_get_format_name(irb->Base.Format));
92      return false;
93   }
94
95   {
96      GLuint image_x, image_y;
97      GLshort src_pitch;
98
99      /* get dest x/y in destination texture */
100      intel_miptree_get_image_offset(intelImage->mt,
101				     intelImage->base.Base.Level,
102				     intelImage->base.Base.Face,
103				     0,
104				     &image_x, &image_y);
105
106      /* The blitter can't handle Y-tiled buffers. */
107      if (intelImage->mt->region->tiling == I915_TILING_Y) {
108	 return false;
109      }
110
111      if (ctx->ReadBuffer->Name == 0) {
112	 /* Flip vertical orientation for system framebuffers */
113	 y = ctx->ReadBuffer->Height - (y + height);
114	 src_pitch = -region->pitch;
115      } else {
116	 /* reading from a FBO, y is already oriented the way we like */
117	 src_pitch = region->pitch;
118      }
119
120      /* blit from src buffer to texture */
121      if (!intelEmitCopyBlit(intel,
122			     intelImage->mt->cpp,
123			     src_pitch,
124			     region->bo,
125			     0,
126			     region->tiling,
127			     intelImage->mt->region->pitch,
128			     intelImage->mt->region->bo,
129			     0,
130			     intelImage->mt->region->tiling,
131			     irb->draw_x + x, irb->draw_y + y,
132			     image_x + dstx, image_y + dsty,
133			     width, height,
134			     GL_COPY)) {
135	 return false;
136      }
137   }
138
139   if (copy_supported_with_alpha_override)
140      intel_set_teximage_alpha_to_one(ctx, intelImage);
141
142   return true;
143}
144
145
146static void
147intelCopyTexSubImage1D(struct gl_context *ctx,
148                       struct gl_texture_image *texImage,
149                       GLint xoffset,
150                       struct gl_renderbuffer *rb,
151                       GLint x, GLint y, GLsizei width)
152{
153   if (!intel_copy_texsubimage(intel_context(ctx),
154                               intel_texture_image(texImage),
155                               xoffset, 0,
156                               intel_renderbuffer(rb), x, y, width, 1)) {
157      fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
158      _mesa_meta_CopyTexSubImage1D(ctx, texImage, xoffset,
159                                   rb, x, y, width);
160   }
161}
162
163
164static void
165intelCopyTexSubImage2D(struct gl_context *ctx,
166                       struct gl_texture_image *texImage,
167                       GLint xoffset, GLint yoffset,
168                       struct gl_renderbuffer *rb,
169                       GLint x, GLint y, GLsizei width, GLsizei height)
170{
171   if (!intel_copy_texsubimage(intel_context(ctx),
172                               intel_texture_image(texImage),
173                               xoffset, yoffset,
174                               intel_renderbuffer(rb), x, y, width, height)) {
175      fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
176      _mesa_meta_CopyTexSubImage2D(ctx, texImage,
177                                   xoffset, yoffset,
178                                   rb, x, y, width, height);
179   }
180}
181
182
183void
184intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
185{
186   functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
187   functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
188}
189