meta_tex_subimage.c revision a44606eb8164be2aa37eb288fd90894d74bd0935 
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      bool is_pixel_pack = pbo_target == GL_PIXEL_PACK_BUFFER;
83
84      _mesa_GenBuffers(1, tmp_pbo);
85
86      /* We are not doing this inside meta_begin/end.  However, we know the
87       * client doesn't have the given target bound, so we can go ahead and
88       * squash it.  We'll set it back when we're done.
89       */
90      _mesa_BindBuffer(pbo_target, *tmp_pbo);
91
92      /* In case of GL_PIXEL_PACK_BUFFER, pass null pointer for the pixel
93       * data to avoid unnecessary data copying in _mesa_BufferData().
94       */
95      if (is_pixel_pack)
96         _mesa_BufferData(pbo_target, row_stride * height, NULL,
97                          GL_STREAM_READ);
98      else
99         _mesa_BufferData(pbo_target, row_stride * height, pixels,
100                          GL_STREAM_DRAW);
101
102      buffer_obj = packing->BufferObj;
103      pixels = NULL;
104
105      _mesa_BindBuffer(pbo_target, 0);
106   }
107
108   _mesa_GenTextures(1, tmp_tex);
109   tex_obj = _mesa_lookup_texture(ctx, *tmp_tex);
110   _mesa_initialize_texture_object(ctx, tex_obj, *tmp_tex, GL_TEXTURE_2D);
111   /* This must be set after _mesa_initialize_texture_object, not before. */
112   tex_obj->Immutable = GL_TRUE;
113   /* This is required for interactions with ARB_texture_view. */
114   tex_obj->NumLayers = 1;
115
116   internal_format = _mesa_get_format_base_format(pbo_format);
117
118   tex_image = _mesa_get_tex_image(ctx, tex_obj, tex_obj->Target, 0);
119   _mesa_init_teximage_fields(ctx, tex_image, width, height, 1,
120                              0, internal_format, pbo_format);
121
122   read_only = pbo_target == GL_PIXEL_UNPACK_BUFFER;
123   if (!ctx->Driver.SetTextureStorageForBufferObject(ctx, tex_obj,
124                                                     buffer_obj,
125                                                     (intptr_t)pixels,
126                                                     row_stride,
127                                                     read_only)) {
128      _mesa_DeleteTextures(1, tmp_tex);
129      _mesa_DeleteBuffers(1, tmp_pbo);
130      return NULL;
131   }
132
133   return tex_image;
134}
135
136bool
137_mesa_meta_pbo_TexSubImage(struct gl_context *ctx, GLuint dims,
138                           struct gl_texture_image *tex_image,
139                           int xoffset, int yoffset, int zoffset,
140                           int width, int height, int depth,
141                           GLenum format, GLenum type, const void *pixels,
142                           bool allocate_storage, bool create_pbo,
143                           const struct gl_pixelstore_attrib *packing)
144{
145   GLuint pbo = 0, pbo_tex = 0, fbos[2] = { 0, 0 };
146   struct gl_texture_image *pbo_tex_image;
147   GLenum status;
148   bool success = false;
149   int z, iters;
150
151   /* XXX: This should probably be passed in from somewhere */
152   const char *where = "_mesa_meta_pbo_TexSubImage";
153
154   if (!_mesa_is_bufferobj(packing->BufferObj) && !create_pbo)
155      return false;
156
157   if (format == GL_DEPTH_COMPONENT ||
158       format == GL_DEPTH_STENCIL ||
159       format == GL_STENCIL_INDEX ||
160       format == GL_COLOR_INDEX)
161      return false;
162
163   if (ctx->_ImageTransferState)
164      return false;
165
166   if (!_mesa_validate_pbo_access(dims, packing, width, height, depth,
167                                  format, type, INT_MAX, pixels)) {
168      _mesa_error(ctx, GL_INVALID_OPERATION,
169                  "%s(out of bounds PBO access)", where);
170      return true;
171   }
172
173   if (_mesa_check_disallowed_mapping(packing->BufferObj)) {
174      /* buffer is mapped - that's an error */
175      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
176      return true;
177   }
178
179   /* Only accept tightly packed pixels from the user. */
180   if (packing->ImageHeight != 0 && packing->ImageHeight != height)
181      return false;
182
183   /* For arrays, use a tall (height * depth) 2D texture. */
184   pbo_tex_image = create_texture_for_pbo(ctx, create_pbo,
185                                          GL_PIXEL_UNPACK_BUFFER,
186                                          width, height * depth,
187                                          format, type, pixels, packing,
188                                          &pbo, &pbo_tex);
189   if (!pbo_tex_image)
190      return false;
191
192   if (allocate_storage)
193      ctx->Driver.AllocTextureImageBuffer(ctx, tex_image);
194
195   /* Only stash the current FBO */
196   _mesa_meta_begin(ctx, 0);
197
198   _mesa_GenFramebuffers(2, fbos);
199   _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
200   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
201
202   _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
203                             pbo_tex_image, 0);
204   /* If this passes on the first layer it should pass on the others */
205   status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER);
206   if (status != GL_FRAMEBUFFER_COMPLETE)
207      goto fail;
208
209   _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
210                             tex_image, zoffset);
211   /* If this passes on the first layer it should pass on the others */
212   status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
213   if (status != GL_FRAMEBUFFER_COMPLETE)
214      goto fail;
215
216   _mesa_update_state(ctx);
217
218   if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
219                                  0, 0, width, height,
220                                  xoffset, yoffset,
221                                  xoffset + width, yoffset + height,
222                                  GL_COLOR_BUFFER_BIT, GL_NEAREST))
223      goto fail;
224
225   iters = tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY ?
226           height : depth;
227
228   for (z = 1; z < iters; z++) {
229      _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
230                                tex_image, zoffset + z);
231
232      _mesa_update_state(ctx);
233
234      if (tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
235         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
236                                    0, z, width, z + 1,
237                                    xoffset, yoffset,
238                                    xoffset + width, yoffset + 1,
239                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
240      else
241         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
242                                    0, z * height, width, (z + 1) * height,
243                                    xoffset, yoffset,
244                                    xoffset + width, yoffset + height,
245                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
246   }
247
248   success = true;
249
250fail:
251   _mesa_DeleteFramebuffers(2, fbos);
252   _mesa_DeleteTextures(1, &pbo_tex);
253   _mesa_DeleteBuffers(1, &pbo);
254
255   _mesa_meta_end(ctx);
256
257   return success;
258}
259
260bool
261_mesa_meta_pbo_GetTexSubImage(struct gl_context *ctx, GLuint dims,
262                              struct gl_texture_image *tex_image,
263                              int xoffset, int yoffset, int zoffset,
264                              int width, int height, int depth,
265                              GLenum format, GLenum type, const void *pixels,
266                              const struct gl_pixelstore_attrib *packing)
267{
268   GLuint pbo = 0, pbo_tex = 0, fbos[2] = { 0, 0 };
269   struct gl_texture_image *pbo_tex_image;
270   GLenum status;
271   bool success = false;
272   int z, iters;
273
274   /* XXX: This should probably be passed in from somewhere */
275   const char *where = "_mesa_meta_pbo_GetTexSubImage";
276
277   if (!_mesa_is_bufferobj(packing->BufferObj))
278      return false;
279
280   if (format == GL_DEPTH_COMPONENT ||
281       format == GL_DEPTH_STENCIL ||
282       format == GL_STENCIL_INDEX ||
283       format == GL_COLOR_INDEX)
284      return false;
285
286   if (ctx->_ImageTransferState)
287      return false;
288
289   if (!_mesa_validate_pbo_access(dims, packing, width, height, depth,
290                                  format, type, INT_MAX, pixels)) {
291      _mesa_error(ctx, GL_INVALID_OPERATION,
292                  "%s(out of bounds PBO access)", where);
293      return true;
294   }
295
296   if (_mesa_check_disallowed_mapping(packing->BufferObj)) {
297      /* buffer is mapped - that's an error */
298      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(PBO is mapped)", where);
299      return true;
300   }
301
302   /* Only accept tightly packed pixels from the user. */
303   if (packing->ImageHeight != 0 && packing->ImageHeight != height)
304      return false;
305
306   /* For arrays, use a tall (height * depth) 2D texture. */
307   pbo_tex_image = create_texture_for_pbo(ctx, false, GL_PIXEL_PACK_BUFFER,
308                                          width, height * depth,
309                                          format, type, pixels, packing,
310                                          &pbo, &pbo_tex);
311   if (!pbo_tex_image)
312      return false;
313
314   /* Only stash the current FBO */
315   _mesa_meta_begin(ctx, 0);
316
317   _mesa_GenFramebuffers(2, fbos);
318
319   /* If we were given a texture, bind it to the read framebuffer.  If not,
320    * we're doing a ReadPixels and we should just use whatever framebuffer
321    * the client has bound.
322    */
323   if (tex_image) {
324      _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER, fbos[0]);
325      _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
326                                tex_image, zoffset);
327      /* If this passes on the first layer it should pass on the others */
328      status = _mesa_CheckFramebufferStatus(GL_READ_FRAMEBUFFER);
329      if (status != GL_FRAMEBUFFER_COMPLETE)
330         goto fail;
331   } else {
332      assert(depth == 1);
333   }
334
335   _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fbos[1]);
336   _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
337                             pbo_tex_image, 0);
338   /* If this passes on the first layer it should pass on the others */
339   status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER);
340   if (status != GL_FRAMEBUFFER_COMPLETE)
341      goto fail;
342
343   _mesa_update_state(ctx);
344
345   if (_mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
346                                  xoffset, yoffset,
347                                  xoffset + width, yoffset + height,
348                                  0, 0, width, height,
349                                  GL_COLOR_BUFFER_BIT, GL_NEAREST))
350      goto fail;
351
352   if (tex_image && tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
353      iters = height;
354   else
355      iters = depth;
356
357   for (z = 1; z < iters; z++) {
358      _mesa_meta_bind_fbo_image(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
359                                tex_image, zoffset + z);
360
361      _mesa_update_state(ctx);
362
363      if (tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY)
364         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
365                                    xoffset, yoffset,
366                                    xoffset + width, yoffset + 1,
367                                    0, z, width, z + 1,
368                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
369      else
370         _mesa_meta_BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
371                                    xoffset, yoffset,
372                                    xoffset + width, yoffset + height,
373                                    0, z * height, width, (z + 1) * height,
374                                    GL_COLOR_BUFFER_BIT, GL_NEAREST);
375   }
376
377   success = true;
378
379fail:
380   _mesa_DeleteFramebuffers(2, fbos);
381   _mesa_DeleteTextures(1, &pbo_tex);
382   _mesa_DeleteBuffers(1, &pbo);
383
384   _mesa_meta_end(ctx);
385
386   return success;
387}
388