intel_tex_copy.c revision 362c1bf75eb74de5b4655c481b74f79718ed4a34 
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/mipmap.h"
34
35#include "drivers/common/meta.h"
36
37#include "intel_screen.h"
38#include "intel_context.h"
39#include "intel_buffers.h"
40#include "intel_mipmap_tree.h"
41#include "intel_regions.h"
42#include "intel_fbo.h"
43#include "intel_tex.h"
44#include "intel_blit.h"
45
46#define FILE_DEBUG_FLAG DEBUG_TEXTURE
47
48/**
49 * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
50 *
51 * Do the best we can using the blitter.  A future project is to use
52 * the texture engine and fragment programs for these copies.
53 */
54static const struct intel_region *
55get_teximage_source(struct intel_context *intel, GLenum internalFormat)
56{
57   struct intel_renderbuffer *irb;
58
59   DBG("%s %s\n", __FUNCTION__,
60       _mesa_lookup_enum_by_nr(internalFormat));
61
62   switch (internalFormat) {
63   case GL_DEPTH_COMPONENT:
64   case GL_DEPTH_COMPONENT16:
65      irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
66      if (irb && irb->region && irb->region->cpp == 2)
67         return irb->region;
68      return NULL;
69   case GL_DEPTH24_STENCIL8_EXT:
70   case GL_DEPTH_STENCIL_EXT:
71      irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
72      if (irb && irb->region && irb->region->cpp == 4)
73         return irb->region;
74      return NULL;
75   case GL_RGBA:
76   case GL_RGBA8:
77   case GL_RGB:
78   case GL_RGB8:
79      return intel_readbuf_region(intel);
80   default:
81      return NULL;
82   }
83}
84
85
86static GLboolean
87do_copy_texsubimage(struct intel_context *intel,
88		    GLenum target,
89                    struct intel_texture_image *intelImage,
90                    GLenum internalFormat,
91                    GLint dstx, GLint dsty,
92                    GLint x, GLint y, GLsizei width, GLsizei height)
93{
94   GLcontext *ctx = &intel->ctx;
95   const struct intel_region *src = get_teximage_source(intel, internalFormat);
96
97   if (!intelImage->mt || !src) {
98      if (INTEL_DEBUG & DEBUG_FALLBACKS)
99	 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
100		 __FUNCTION__, intelImage->mt, src, internalFormat);
101      return GL_FALSE;
102   }
103
104   if (intelImage->mt->cpp != src->cpp) {
105      if (INTEL_DEBUG & DEBUG_FALLBACKS)
106	 fprintf(stderr, "%s fail %d vs %d cpp\n",
107		 __FUNCTION__, intelImage->mt->cpp, src->cpp);
108      return GL_FALSE;
109   }
110
111   /* intelFlush(ctx); */
112   intel_prepare_render(intel);
113   {
114      drm_intel_bo *dst_bo = intel_region_buffer(intel,
115						 intelImage->mt->region,
116						 INTEL_WRITE_PART);
117      GLuint image_x, image_y;
118      GLshort src_pitch;
119
120      /* get dest x/y in destination texture */
121      intel_miptree_get_image_offset(intelImage->mt,
122				     intelImage->level,
123				     intelImage->face,
124				     0,
125				     &image_x, &image_y);
126
127      /* Can't blit to tiled buffers with non-tile-aligned offset. */
128      if (intelImage->mt->region->tiling == I915_TILING_Y) {
129	 return GL_FALSE;
130      }
131
132      if (ctx->ReadBuffer->Name == 0) {
133	 /* reading from a window, adjust x, y */
134	 const __DRIdrawable *dPriv = intel->driReadDrawable;
135	 y = dPriv->y + (dPriv->h - (y + height));
136	 x += dPriv->x;
137
138	 /* Invert the data coming from the source rectangle due to GL
139	  * and hardware disagreeing on where y=0 is.
140	  *
141	  * It appears that our offsets and pitches get mangled
142	  * appropriately by the hardware, and we don't need to adjust them
143	  * on our own.
144	  */
145	 src_pitch = -src->pitch;
146      } else {
147	 /* reading from a FBO, y is already oriented the way we like */
148	 src_pitch = src->pitch;
149      }
150
151      /* blit from src buffer to texture */
152      if (!intelEmitCopyBlit(intel,
153			     intelImage->mt->cpp,
154			     src_pitch,
155			     src->buffer,
156			     0,
157			     src->tiling,
158			     intelImage->mt->region->pitch,
159			     dst_bo,
160			     0,
161			     intelImage->mt->region->tiling,
162			     src->draw_x + x, src->draw_y + y,
163			     image_x + dstx, image_y + dsty,
164			     width, height,
165			     GL_COPY)) {
166	 return GL_FALSE;
167      }
168   }
169
170   return GL_TRUE;
171}
172
173
174static void
175intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
176                    GLenum internalFormat,
177                    GLint x, GLint y, GLsizei width, GLint border)
178{
179   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
180   struct gl_texture_object *texObj =
181      _mesa_select_tex_object(ctx, texUnit, target);
182   struct gl_texture_image *texImage =
183      _mesa_select_tex_image(ctx, texObj, target, level);
184   int srcx, srcy, dstx, dsty, height;
185
186   if (border)
187      goto fail;
188
189   /* Setup or redefine the texture object, mipmap tree and texture
190    * image.  Don't populate yet.
191    */
192   ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
193                          width, border,
194                          GL_RGBA, CHAN_TYPE, NULL,
195                          &ctx->DefaultPacking, texObj, texImage);
196   srcx = x;
197   srcy = y;
198   dstx = 0;
199   dsty = 0;
200   height = 1;
201   if (!_mesa_clip_copytexsubimage(ctx,
202				   &dstx, &dsty,
203				   &srcx, &srcy,
204				   &width, &height))
205      return;
206
207   if (!do_copy_texsubimage(intel_context(ctx), target,
208                            intel_texture_image(texImage),
209                            internalFormat, 0, 0, x, y, width, height))
210      goto fail;
211
212   return;
213
214 fail:
215   if (INTEL_DEBUG & DEBUG_FALLBACKS)
216      fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
217   _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
218                             width, border);
219}
220
221
222static void
223intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
224                    GLenum internalFormat,
225                    GLint x, GLint y, GLsizei width, GLsizei height,
226                    GLint border)
227{
228   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
229   struct gl_texture_object *texObj =
230      _mesa_select_tex_object(ctx, texUnit, target);
231   struct gl_texture_image *texImage =
232      _mesa_select_tex_image(ctx, texObj, target, level);
233   int srcx, srcy, dstx, dsty;
234
235   if (border)
236      goto fail;
237
238   /* Setup or redefine the texture object, mipmap tree and texture
239    * image.  Don't populate yet.
240    */
241   ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
242                          width, height, border,
243                          GL_RGBA, GL_UNSIGNED_BYTE, NULL,
244                          &ctx->DefaultPacking, texObj, texImage);
245
246   srcx = x;
247   srcy = y;
248   dstx = 0;
249   dsty = 0;
250   if (!_mesa_clip_copytexsubimage(ctx,
251				   &dstx, &dsty,
252				   &srcx, &srcy,
253				   &width, &height))
254      return;
255
256   if (!do_copy_texsubimage(intel_context(ctx), target,
257                            intel_texture_image(texImage),
258                            internalFormat, 0, 0, x, y, width, height))
259      goto fail;
260
261   return;
262
263 fail:
264   if (INTEL_DEBUG & DEBUG_FALLBACKS)
265      fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
266   _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
267                             width, height, border);
268}
269
270
271static void
272intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
273                       GLint xoffset, GLint x, GLint y, GLsizei width)
274{
275   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
276   struct gl_texture_object *texObj =
277      _mesa_select_tex_object(ctx, texUnit, target);
278   struct gl_texture_image *texImage =
279      _mesa_select_tex_image(ctx, texObj, target, level);
280   GLenum internalFormat = texImage->InternalFormat;
281
282   /* XXX need to check <border> as in above function? */
283
284   /* Need to check texture is compatible with source format.
285    */
286
287   if (!do_copy_texsubimage(intel_context(ctx), target,
288                            intel_texture_image(texImage),
289                            internalFormat, xoffset, 0, x, y, width, 1)) {
290      if (INTEL_DEBUG & DEBUG_FALLBACKS)
291         fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
292      _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
293   }
294}
295
296
297static void
298intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
299                       GLint xoffset, GLint yoffset,
300                       GLint x, GLint y, GLsizei width, GLsizei height)
301{
302   struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
303   struct gl_texture_object *texObj =
304      _mesa_select_tex_object(ctx, texUnit, target);
305   struct gl_texture_image *texImage =
306      _mesa_select_tex_image(ctx, texObj, target, level);
307   GLenum internalFormat = texImage->InternalFormat;
308
309   /* Need to check texture is compatible with source format.
310    */
311
312   if (!do_copy_texsubimage(intel_context(ctx), target,
313                            intel_texture_image(texImage),
314                            internalFormat,
315                            xoffset, yoffset, x, y, width, height)) {
316
317      if (INTEL_DEBUG & DEBUG_FALLBACKS)
318         fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
319      _mesa_meta_CopyTexSubImage2D(ctx, target, level,
320                                   xoffset, yoffset, x, y, width, height);
321   }
322}
323
324
325void
326intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
327{
328   functions->CopyTexImage1D = intelCopyTexImage1D;
329   functions->CopyTexImage2D = intelCopyTexImage2D;
330   functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
331   functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
332}
333