meta_tex_subimage.c revision 546aba143d13ba3f993ead4cc30b2404abfc0202 
1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2015 Intel Corporation.  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 "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Jason Ekstrand <jason.ekstrand@intel.com>
26 */
27
28#include "bufferobj.h"
29#include "buffers.h"
30#include "fbobject.h"
31#include "glformats.h"
32#include "glheader.h"
33#include "image.h"
34#include "macros.h"
35#include "meta.h"
36#include "pbo.h"
37#include "shaderapi.h"
38#include "state.h"
39#include "teximage.h"
40#include "texobj.h"
41#include "texstate.h"
42#include "uniforms.h"
43#include "varray.h"
44
45static struct gl_texture_image *
46create_texture_for_pbo(struct gl_context *ctx, bool create_pbo,
47                       GLenum pbo_target, int width, int height,
48                       GLenum format, GLenum type, const void *pixels,
49                       const struct gl_pixelstore_attrib *packing,
50                       GLuint *tmp_pbo, GLuint *tmp_tex)
51{
52   uint32_t pbo_format;
53   GLenum internal_format;
54   unsigned row_stride;
55   struct gl_buffer_object *buffer_obj;
56   struct gl_texture_object *tex_obj;
57   struct gl_texture_image *tex_image;
58   bool read_only;
59
60   if (packing->SwapBytes ||
61       packing->LsbFirst ||
62       packing->Invert)
63      return NULL;
64
65   pbo_format = _mesa_format_from_format_and_type(format, type);
66   if (_mesa_format_is_mesa_array_format(pbo_format))
67      pbo_format = _mesa_format_from_array_format(pbo_format);
68
69   if (!pbo_format || !ctx->TextureFormatSupported[pbo_format])
70      return NULL;
71
72   /* Account for SKIP_PIXELS, SKIP_ROWS, ALIGNMENT, and SKIP_IMAGES */
73   pixels = _mesa_image_address3d(packing, pixels,
74                                  width, height, format, type, 0, 0, 0);
75   row_stride = _mesa_image_row_stride(packing, width, format, type);
76
77   if (_mesa_is_bufferobj(packing->BufferObj)) {
78      *tmp_pbo = 0;
79      buffer_obj = packing->BufferObj;
80   } else {
81      assert(create_pbo);
82
83      _mesa_GenBuffers(1, tmp_pbo);
84
85      /* We are not doing this inside meta_begin/end.  However, we know the
86       * client doesn't have the given target bound, so we can go ahead and
87       * squash it.  We'll set it back when we're done.
88       */
89      _mesa_BindBuffer(pbo_target, *tmp_pbo);
90
91      _mesa_BufferData(pbo_target, row_stride * height, pixels, GL_STREAM_DRAW);
92
93      buffer_obj = ctx->Unpack.BufferObj;
94      pixels = NULL;
95
96      _mesa_BindBuffer(pbo_target, 0);
97   }
98
99   _mesa_GenTextures(1, tmp_tex);
100   tex_obj = _mesa_lookup_texture(ctx, *tmp_tex);
101   _mesa_initialize_texture_object(ctx, tex_obj, *tmp_tex, GL_TEXTURE_2D);
102   /* This must be set after _mesa_initialize_texture_object, not before. */
103   tex_obj->Immutable = GL_TRUE;
104   /* This is required for interactions with ARB_texture_view. */
105   tex_obj->NumLayers = 1;
106
107   internal_format = _mesa_get_format_base_format(pbo_format);
108
109   tex_image = _mesa_get_tex_image(ctx, tex_obj, tex_obj->Target, 0);
110   _mesa_init_teximage_fields(ctx, tex_image, width, height, 1,
111                              0, internal_format, pbo_format);
112
113   read_only = pbo_target == GL_PIXEL_UNPACK_BUFFER;
114   if (!ctx->Driver.SetTextureStorageForBufferObject(ctx, tex_obj,
115                                                     buffer_obj,
116                                                     (intptr_t)pixels,
117                                                     row_stride,
118                                                     read_only)) {
119      _mesa_DeleteTextures(1, tmp_tex);
120      _mesa_DeleteBuffers(1, tmp_pbo);
121      return NULL;
122   }
123
124   return tex_image;
125}
126
127bool
128_mesa_meta_pbo_TexSubImage(struct gl_context *ctx, GLuint dims,
129                           struct gl_texture_image *tex_image,
130                           int xoffset, int yoffset, int zoffset,
131                           int width, int height, int depth,
132                           GLenum format, GLenum type, const void *pixels,
133                           bool allocate_storage, bool create_pbo,
134                           const struct gl_pixelstore_attrib *packing)
135{
136   GLuint pbo = 0, pbo_tex = 0, fbos[2] = { 0, 0 };
137   struct gl_texture_image *pbo_tex_image;
138   GLenum status;
139   bool success = false;
140   int z, iters;
141
142   /* XXX: This should probably be passed in from somewhere */
143   const char *where = "_mesa_meta_pbo_TexSubImage";
144
145   if (!_mesa_is_bufferobj(packing->BufferObj) && !create_pbo)
146      return false;
147
148   if (format == GL_DEPTH_COMPONENT ||
149       format == GL_DEPTH_STENCIL ||
150       format == GL_STENCIL_INDEX ||
151       format == GL_COLOR_INDEX)
152      return false;
153
154   if (ctx->_ImageTransferState)
155      return false;
156
157   if (!_mesa_validate_pbo_access(dims, packing, width, height, depth,
158                                  format, type, INT_MAX, pixels)) {
159      _mesa_error(ctx, GL_INVALID_OPERATION,
160                  "%s(out of bounds PBO access)", where);
161      return true;
162   }
163
164   if (_mesa_check_disallowed_mapping(packing->BufferObj)) {
165      /* buffer is mapped - that's an error */
166      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
167      return true;
168   }
169
170   /* Only accept tightly packed pixels from the user. */
171   if (packing->ImageHeight != 0 && packing->ImageHeight != height)
172      return false;
173
174   /* For arrays, use a tall (height * depth) 2D texture. */
175   pbo_tex_image = create_texture_for_pbo(ctx, create_pbo,
176                                          GL_PIXEL_UNPACK_BUFFER,
177                                          width, height * depth,
178                                          format, type, pixels, packing,
179                                          &pbo, &pbo_tex);
180   if (!pbo_tex_image)
181      return false;
182
183   if (allocate_storage)
184      ctx->Driver.AllocTextureImageBuffer(ctx, tex_image);
185
186   /* Only stash the current FBO */
187   _mesa_meta_begin(ctx, 0);
188
189   _mesa_GenFramebuffers(2, fbos);
190   _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
191   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
192
193   _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
194                             pbo_tex_image, 0);
195   /* If this passes on the first layer it should pass on the others */
196   status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER);
197   if (status != GL_FRAMEBUFFER_COMPLETE)
198      goto fail;
199
200   _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
201                             tex_image, zoffset);
202   /* If this passes on the first layer it should pass on the others */
203   status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
204   if (status != GL_FRAMEBUFFER_COMPLETE)
205      goto fail;
206
207   _mesa_update_state(ctx);
208
209   if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
210                                  0, 0, width, height,
211                                  xoffset, yoffset,
212                                  xoffset + width, yoffset + height,
213                                  GL_COLOR_BUFFER_BIT, GL_NEAREST))
214      goto fail;
215
216   iters = tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY ?
217           height : depth;
218
219   for (z = 1; z < iters; z++) {
220      _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
221                                pbo_tex_image, z);
222      _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
223                                tex_image, zoffset + z);
224
225      _mesa_update_state(ctx);
226
227      if (tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
228         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
229                                    0, z, width, z + 1,
230                                    xoffset, yoffset,
231                                    xoffset + width, yoffset + 1,
232                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
233      else
234         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
235                                    0, z * height, width, (z + 1) * height,
236                                    xoffset, yoffset,
237                                    xoffset + width, yoffset + height,
238                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
239   }
240
241   success = true;
242
243fail:
244   _mesa_DeleteFramebuffers(2, fbos);
245   _mesa_DeleteTextures(1, &pbo_tex);
246   _mesa_DeleteBuffers(1, &pbo);
247
248   _mesa_meta_end(ctx);
249
250   return success;
251}
252
253bool
254_mesa_meta_pbo_GetTexSubImage(struct gl_context *ctx, GLuint dims,
255                              struct gl_texture_image *tex_image,
256                              int xoffset, int yoffset, int zoffset,
257                              int width, int height, int depth,
258                              GLenum format, GLenum type, const void *pixels,
259                              const struct gl_pixelstore_attrib *packing)
260{
261   GLuint pbo = 0, pbo_tex = 0, fbos[2] = { 0, 0 };
262   struct gl_texture_image *pbo_tex_image;
263   GLenum status;
264   bool success = false;
265   int z, iters;
266
267   /* XXX: This should probably be passed in from somewhere */
268   const char *where = "_mesa_meta_pbo_GetTexSubImage";
269
270   if (!_mesa_is_bufferobj(packing->BufferObj))
271      return false;
272
273   if (format == GL_DEPTH_COMPONENT ||
274       format == GL_DEPTH_STENCIL ||
275       format == GL_STENCIL_INDEX ||
276       format == GL_COLOR_INDEX)
277      return false;
278
279   if (ctx->_ImageTransferState)
280      return false;
281
282   if (!_mesa_validate_pbo_access(dims, packing, width, height, depth,
283                                  format, type, INT_MAX, pixels)) {
284      _mesa_error(ctx, GL_INVALID_OPERATION,
285                  "%s(out of bounds PBO access)", where);
286      return true;
287   }
288
289   if (_mesa_check_disallowed_mapping(packing->BufferObj)) {
290      /* buffer is mapped - that's an error */
291      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
292      return true;
293   }
294
295   /* Only accept tightly packed pixels from the user. */
296   if (packing->ImageHeight != 0 && packing->ImageHeight != height)
297      return false;
298
299   /* For arrays, use a tall (height * depth) 2D texture. */
300   pbo_tex_image = create_texture_for_pbo(ctx, false, GL_PIXEL_PACK_BUFFER,
301                                          width, height * depth,
302                                          format, type, pixels, packing,
303                                          &pbo, &pbo_tex);
304   if (!pbo_tex_image)
305      return false;
306
307   /* Only stash the current FBO */
308   _mesa_meta_begin(ctx, 0);
309
310   _mesa_GenFramebuffers(2, fbos);
311
312   /* If we were given a texture, bind it to the read framebuffer.  If not,
313    * we're doing a ReadPixels and we should just use whatever framebuffer
314    * the client has bound.
315    */
316   if (tex_image) {
317      _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
318      _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
319                                tex_image, zoffset);
320      /* If this passes on the first layer it should pass on the others */
321      status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER);
322      if (status != GL_FRAMEBUFFER_COMPLETE)
323         goto fail;
324   } else {
325      assert(depth == 1);
326   }
327
328   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
329   _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
330                             pbo_tex_image, 0);
331   /* If this passes on the first layer it should pass on the others */
332   status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
333   if (status != GL_FRAMEBUFFER_COMPLETE)
334      goto fail;
335
336   _mesa_update_state(ctx);
337
338   if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
339                                  xoffset, yoffset,
340                                  xoffset + width, yoffset + height,
341                                  0, 0, width, height,
342                                  GL_COLOR_BUFFER_BIT, GL_NEAREST))
343      goto fail;
344
345   if (tex_image && tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
346      iters = height;
347   else
348      iters = depth;
349
350   for (z = 1; z < iters; z++) {
351      _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
352                                tex_image, zoffset + z);
353      _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
354                                pbo_tex_image, z);
355
356      _mesa_update_state(ctx);
357
358      if (tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
359         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
360                                    xoffset, yoffset,
361                                    xoffset + width, yoffset + 1,
362                                    0, z, width, z + 1,
363                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
364      else
365         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
366                                    xoffset, yoffset,
367                                    xoffset + width, yoffset + height,
368                                    0, z * height, width, (z + 1) * height,
369                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
370   }
371
372   success = true;
373
374fail:
375   _mesa_DeleteFramebuffers(2, fbos);
376   _mesa_DeleteTextures(1, &pbo_tex);
377   _mesa_DeleteBuffers(1, &pbo);
378
379   _mesa_meta_end(ctx);
380
381   return success;
382}
383