intel_tex_copy.c revision 8fda97afb8b7a03415dbca6d83691d2d6461126c 
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/mipmap.h"
33
34#include "drivers/common/meta.h"
35
36#include "intel_screen.h"
37#include "intel_context.h"
38#include "intel_batchbuffer.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 =
96      get_teximage_source(intel, internalFormat);
97
98   if (!intelImage->mt || !src) {
99      if (INTEL_DEBUG & DEBUG_FALLBACKS)
100	 fprintf(stderr, "%s fail %p %p (0x%08x)\n",
101		 __FUNCTION__, intelImage->mt, src, internalFormat);
102      return GL_FALSE;
103   }
104
105   if (intelImage->mt->cpp != src->cpp) {
106      if (INTEL_DEBUG & DEBUG_FALLBACKS)
107	 fprintf(stderr, "%s fail %d vs %d cpp\n",
108		 __FUNCTION__, intelImage->mt->cpp, src->cpp);
109      return GL_FALSE;
110   }
111
112   intelFlush(ctx);
113   LOCK_HARDWARE(intel);
114   {
115      drm_intel_bo *dst_bo = intel_region_buffer(intel,
116						 intelImage->mt->region,
117						 INTEL_WRITE_PART);
118      GLuint image_offset = intel_miptree_image_offset(intelImage->mt,
119                                                       intelImage->face,
120                                                       intelImage->level);
121      const GLint orig_x = x;
122      const GLint orig_y = y;
123      GLshort src_pitch;
124
125      /* Update dst for clipped src.  Need to also clip the source rect. */
126      dstx += x - orig_x;
127      dsty += y - orig_y;
128
129      /* Can't blit to tiled buffers with non-tile-aligned offset. */
130      if (intelImage->mt->region->tiling != I915_TILING_NONE &&
131	  (image_offset & 4095) != 0) {
132	 UNLOCK_HARDWARE(intel);
133	 return GL_FALSE;
134      }
135
136      if (ctx->ReadBuffer->Name == 0) {
137	 /* reading from a window, adjust x, y */
138	 __DRIdrawablePrivate *dPriv = intel->driDrawable;
139	 y = dPriv->y + (dPriv->h - (y + height));
140	 x += dPriv->x;
141
142	 /* Invert the data coming from the source rectangle due to GL
143	  * and hardware disagreeing on where y=0 is.
144	  *
145	  * It appears that our offsets and pitches get mangled
146	  * appropriately by the hardware, and we don't need to adjust them
147	  * on our own.
148	  */
149	 src_pitch = -src->pitch;
150      } else {
151	 /* reading from a FBO, y is already oriented the way we like */
152	 src_pitch = src->pitch;
153      }
154
155      if (!intelEmitCopyBlit(intel,
156			     intelImage->mt->cpp,
157			     src_pitch,
158			     src->buffer,
159			     0,
160			     src->tiling,
161			     intelImage->mt->pitch,
162			     dst_bo,
163			     image_offset,
164			     intelImage->mt->region->tiling,
165			     x, y, dstx, dsty, width, height,
166			     GL_COPY)) {
167	 UNLOCK_HARDWARE(intel);
168	 return GL_FALSE;
169      }
170   }
171
172   UNLOCK_HARDWARE(intel);
173
174   return GL_TRUE;
175}
176
177
178static void
179intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
180                    GLenum internalFormat,
181                    GLint x, GLint y, GLsizei width, GLint border)
182{
183   struct gl_texture_unit *texUnit =
184      &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
185   struct gl_texture_object *texObj =
186      _mesa_select_tex_object(ctx, texUnit, target);
187   struct gl_texture_image *texImage =
188      _mesa_select_tex_image(ctx, texObj, target, level);
189   int srcx, srcy, dstx, dsty, height;
190
191   if (border)
192      goto fail;
193
194   /* Setup or redefine the texture object, mipmap tree and texture
195    * image.  Don't populate yet.
196    */
197   ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
198                          width, border,
199                          GL_RGBA, CHAN_TYPE, NULL,
200                          &ctx->DefaultPacking, texObj, texImage);
201   srcx = x;
202   srcy = y;
203   dstx = 0;
204   dsty = 0;
205   height = 1;
206   if (!_mesa_clip_copytexsubimage(ctx,
207				   &dstx, &dsty,
208				   &srcx, &srcy,
209				   &width, &height))
210      return;
211
212   if (!do_copy_texsubimage(intel_context(ctx), target,
213                            intel_texture_image(texImage),
214                            internalFormat, 0, 0, x, y, width, height))
215      goto fail;
216
217   return;
218
219 fail:
220   _mesa_meta_CopyTexImage1D(ctx, target, level, internalFormat, x, y,
221                             width, border);
222}
223
224
225static void
226intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
227                    GLenum internalFormat,
228                    GLint x, GLint y, GLsizei width, GLsizei height,
229                    GLint border)
230{
231   struct gl_texture_unit *texUnit =
232      &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
233   struct gl_texture_object *texObj =
234      _mesa_select_tex_object(ctx, texUnit, target);
235   struct gl_texture_image *texImage =
236      _mesa_select_tex_image(ctx, texObj, target, level);
237   int srcx, srcy, dstx, dsty;
238
239   if (border)
240      goto fail;
241
242   /* Setup or redefine the texture object, mipmap tree and texture
243    * image.  Don't populate yet.
244    */
245   ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
246                          width, height, border,
247                          GL_RGBA, CHAN_TYPE, NULL,
248                          &ctx->DefaultPacking, texObj, texImage);
249
250   srcx = x;
251   srcy = y;
252   dstx = 0;
253   dsty = 0;
254   if (!_mesa_clip_copytexsubimage(ctx,
255				   &dstx, &dsty,
256				   &srcx, &srcy,
257				   &width, &height))
258      return;
259
260   if (!do_copy_texsubimage(intel_context(ctx), target,
261                            intel_texture_image(texImage),
262                            internalFormat, 0, 0, x, y, width, height))
263      goto fail;
264
265   return;
266
267 fail:
268   _mesa_meta_CopyTexImage2D(ctx, target, level, internalFormat, x, y,
269                             width, height, border);
270}
271
272
273static void
274intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
275                       GLint xoffset, GLint x, GLint y, GLsizei width)
276{
277   struct gl_texture_unit *texUnit =
278      &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
279   struct gl_texture_object *texObj =
280      _mesa_select_tex_object(ctx, texUnit, target);
281   struct gl_texture_image *texImage =
282      _mesa_select_tex_image(ctx, texObj, target, level);
283   GLenum internalFormat = texImage->InternalFormat;
284
285   /* XXX need to check <border> as in above function? */
286
287   /* Need to check texture is compatible with source format.
288    */
289
290   if (!do_copy_texsubimage(intel_context(ctx), target,
291                            intel_texture_image(texImage),
292                            internalFormat, xoffset, 0, x, y, width, 1)) {
293      _mesa_meta_CopyTexSubImage1D(ctx, target, level, xoffset, x, y, width);
294   }
295}
296
297
298static void
299intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
300                       GLint xoffset, GLint yoffset,
301                       GLint x, GLint y, GLsizei width, GLsizei height)
302{
303   struct gl_texture_unit *texUnit =
304      &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
305   struct gl_texture_object *texObj =
306      _mesa_select_tex_object(ctx, texUnit, target);
307   struct gl_texture_image *texImage =
308      _mesa_select_tex_image(ctx, texObj, target, level);
309   GLenum internalFormat = texImage->InternalFormat;
310
311   /* Need to check texture is compatible with source format.
312    */
313
314   if (!do_copy_texsubimage(intel_context(ctx), target,
315                            intel_texture_image(texImage),
316                            internalFormat,
317                            xoffset, yoffset, x, y, width, height)) {
318
319      DBG("%s - fallback to _mesa_meta_CopyTexSubImage2D\n", __FUNCTION__);
320
321      _mesa_meta_CopyTexSubImage2D(ctx, target, level,
322                                   xoffset, yoffset, x, y, width, height);
323   }
324}
325
326
327void
328intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
329{
330   functions->CopyTexImage1D = intelCopyTexImage1D;
331   functions->CopyTexImage2D = intelCopyTexImage2D;
332   functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
333   functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
334}
335