1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2010 LunarG Inc.
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 OR
17 * 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 OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Chia-I Wu <olv@lunarg.com>
26 */
27
28#include "main/errors.h"
29#include "main/texobj.h"
30#include "main/teximage.h"
31#include "util/u_inlines.h"
32#include "util/format/u_format.h"
33#include "st_cb_eglimage.h"
34#include "st_cb_fbo.h"
35#include "st_context.h"
36#include "st_texture.h"
37#include "st_format.h"
38#include "st_manager.h"
39#include "st_sampler_view.h"
40#include "util/u_surface.h"
41
42static bool
43is_format_supported(struct pipe_screen *screen, enum pipe_format format,
44                    unsigned nr_samples, unsigned nr_storage_samples,
45                    unsigned usage, bool *native_supported)
46{
47   bool supported = screen->is_format_supported(screen, format, PIPE_TEXTURE_2D,
48                                                nr_samples, nr_storage_samples,
49                                                usage);
50   *native_supported = supported;
51
52   /* for sampling, some formats can be emulated.. it doesn't matter that
53    * the surface will have a format that the driver can't cope with because
54    * we'll give it sampler view formats that it can deal with and generate
55    * a shader variant that converts.
56    */
57   if ((usage == PIPE_BIND_SAMPLER_VIEW) && !supported) {
58      switch (format) {
59      case PIPE_FORMAT_IYUV:
60         supported = screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
61                                                 PIPE_TEXTURE_2D, nr_samples,
62                                                 nr_storage_samples, usage);
63         break;
64      case PIPE_FORMAT_NV12:
65         supported = screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
66                                                 PIPE_TEXTURE_2D, nr_samples,
67                                                 nr_storage_samples, usage) &&
68                     screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
69                                                 PIPE_TEXTURE_2D, nr_samples,
70                                                 nr_storage_samples, usage);
71         break;
72      case PIPE_FORMAT_P010:
73      case PIPE_FORMAT_P012:
74      case PIPE_FORMAT_P016:
75         supported = screen->is_format_supported(screen, PIPE_FORMAT_R16_UNORM,
76                                                 PIPE_TEXTURE_2D, nr_samples,
77                                                 nr_storage_samples, usage) &&
78                     screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
79                                                 PIPE_TEXTURE_2D, nr_samples,
80                                                 nr_storage_samples, usage);
81         break;
82      case PIPE_FORMAT_Y210:
83      case PIPE_FORMAT_Y212:
84      case PIPE_FORMAT_Y216:
85         supported = screen->is_format_supported(screen, PIPE_FORMAT_R16G16_UNORM,
86                                                 PIPE_TEXTURE_2D, nr_samples,
87                                                 nr_storage_samples, usage) &&
88                     screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_UNORM,
89                                                 PIPE_TEXTURE_2D, nr_samples,
90                                                 nr_storage_samples, usage);
91         break;
92      case PIPE_FORMAT_Y410:
93         supported = screen->is_format_supported(screen, PIPE_FORMAT_R10G10B10A2_UNORM,
94                                                 PIPE_TEXTURE_2D, nr_samples,
95                                                 nr_storage_samples, usage);
96         break;
97      case PIPE_FORMAT_Y412:
98      case PIPE_FORMAT_Y416:
99         supported = screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_UNORM,
100                                                 PIPE_TEXTURE_2D, nr_samples,
101                                                 nr_storage_samples, usage);
102         break;
103      case PIPE_FORMAT_YUYV:
104         supported = screen->is_format_supported(screen, PIPE_FORMAT_R8G8_R8B8_UNORM,
105                                                 PIPE_TEXTURE_2D, nr_samples,
106                                                 nr_storage_samples, usage) ||
107                     (screen->is_format_supported(screen, PIPE_FORMAT_RG88_UNORM,
108                                                  PIPE_TEXTURE_2D, nr_samples,
109                                                  nr_storage_samples, usage) &&
110                      screen->is_format_supported(screen, PIPE_FORMAT_BGRA8888_UNORM,
111                                                  PIPE_TEXTURE_2D, nr_samples,
112                                                  nr_storage_samples, usage));
113         break;
114      case PIPE_FORMAT_UYVY:
115         supported = screen->is_format_supported(screen, PIPE_FORMAT_G8R8_B8R8_UNORM,
116                                                 PIPE_TEXTURE_2D, nr_samples,
117                                                 nr_storage_samples, usage) ||
118                     (screen->is_format_supported(screen, PIPE_FORMAT_RG88_UNORM,
119                                                  PIPE_TEXTURE_2D, nr_samples,
120                                                  nr_storage_samples, usage) &&
121                      screen->is_format_supported(screen, PIPE_FORMAT_RGBA8888_UNORM,
122                                                  PIPE_TEXTURE_2D, nr_samples,
123                                                  nr_storage_samples, usage));
124         break;
125      case PIPE_FORMAT_AYUV:
126         supported = screen->is_format_supported(screen, PIPE_FORMAT_RGBA8888_UNORM,
127                                                 PIPE_TEXTURE_2D, nr_samples,
128                                                 nr_storage_samples, usage);
129         break;
130      case PIPE_FORMAT_XYUV:
131         supported = screen->is_format_supported(screen, PIPE_FORMAT_RGBX8888_UNORM,
132                                                 PIPE_TEXTURE_2D, nr_samples,
133                                                 nr_storage_samples, usage);
134         break;
135       default:
136         break;
137      }
138   }
139
140   return supported;
141}
142
143static bool
144is_nv12_as_r8_g8b8_supported(struct pipe_screen *screen, struct st_egl_image *out,
145                             unsigned usage, bool *native_supported)
146{
147   if (out->format == PIPE_FORMAT_NV12 &&
148       out->texture->format == PIPE_FORMAT_R8_G8B8_420_UNORM &&
149       screen->is_format_supported(screen, PIPE_FORMAT_R8_G8B8_420_UNORM,
150                                   PIPE_TEXTURE_2D,
151                                   out->texture->nr_samples,
152                                   out->texture->nr_storage_samples,
153                                   usage)) {
154      *native_supported = false;
155      return true;
156   }
157
158   return false;
159}
160
161
162/**
163 * Return the gallium texture of an EGLImage.
164 */
165static bool
166st_get_egl_image(struct gl_context *ctx, GLeglImageOES image_handle,
167                 unsigned usage, const char *error, struct st_egl_image *out,
168                 bool *native_supported)
169{
170   struct st_context *st = st_context(ctx);
171   struct pipe_screen *screen = st->screen;
172   struct st_manager *smapi =
173      (struct st_manager *) st->iface.st_context_private;
174
175   if (!smapi || !smapi->get_egl_image)
176      return false;
177
178   memset(out, 0, sizeof(*out));
179   if (!smapi->get_egl_image(smapi, (void *) image_handle, out)) {
180      /* image_handle does not refer to a valid EGL image object */
181      _mesa_error(ctx, GL_INVALID_VALUE, "%s(image handle not found)", error);
182      return false;
183   }
184
185   if (!is_nv12_as_r8_g8b8_supported(screen, out, usage, native_supported) &&
186       !is_format_supported(screen, out->format, out->texture->nr_samples,
187                            out->texture->nr_storage_samples, usage,
188                            native_supported)) {
189      /* unable to specify a texture object using the specified EGL image */
190      pipe_resource_reference(&out->texture, NULL);
191      _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format not supported)", error);
192      return false;
193   }
194
195   ctx->Shared->HasExternallySharedImages = true;
196   return true;
197}
198
199/**
200 * Return the base format just like _mesa_base_fbo_format does.
201 */
202static GLenum
203st_pipe_format_to_base_format(enum pipe_format format)
204{
205   GLenum base_format;
206
207   if (util_format_is_depth_or_stencil(format)) {
208      if (util_format_is_depth_and_stencil(format)) {
209         base_format = GL_DEPTH_STENCIL;
210      }
211      else {
212         if (format == PIPE_FORMAT_S8_UINT)
213            base_format = GL_STENCIL_INDEX;
214         else
215            base_format = GL_DEPTH_COMPONENT;
216      }
217   }
218   else {
219      /* is this enough? */
220      if (util_format_has_alpha(format))
221         base_format = GL_RGBA;
222      else
223         base_format = GL_RGB;
224   }
225
226   return base_format;
227}
228
229static void
230st_egl_image_target_renderbuffer_storage(struct gl_context *ctx,
231					 struct gl_renderbuffer *rb,
232					 GLeglImageOES image_handle)
233{
234   struct st_renderbuffer *strb = st_renderbuffer(rb);
235   struct st_egl_image stimg;
236   bool native_supported;
237
238   if (st_get_egl_image(ctx, image_handle, PIPE_BIND_RENDER_TARGET,
239                        "glEGLImageTargetRenderbufferStorage",
240                        &stimg, &native_supported)) {
241      struct pipe_context *pipe = st_context(ctx)->pipe;
242      struct pipe_surface *ps, surf_tmpl;
243
244      u_surface_default_template(&surf_tmpl, stimg.texture);
245      surf_tmpl.format = stimg.format;
246      surf_tmpl.u.tex.level = stimg.level;
247      surf_tmpl.u.tex.first_layer = stimg.layer;
248      surf_tmpl.u.tex.last_layer = stimg.layer;
249      ps = pipe->create_surface(pipe, stimg.texture, &surf_tmpl);
250      pipe_resource_reference(&stimg.texture, NULL);
251
252      if (!ps)
253         return;
254
255      strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
256      strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
257      strb->Base.InternalFormat = strb->Base._BaseFormat;
258
259      st_set_ws_renderbuffer_surface(strb, ps);
260      pipe_surface_reference(&ps, NULL);
261   }
262}
263
264static void
265st_bind_egl_image(struct gl_context *ctx,
266                  struct gl_texture_object *texObj,
267                  struct gl_texture_image *texImage,
268                  struct st_egl_image *stimg,
269                  bool tex_storage,
270                  bool native_supported)
271{
272   struct st_context *st = st_context(ctx);
273   struct st_texture_object *stObj;
274   struct st_texture_image *stImage;
275   GLenum internalFormat;
276   mesa_format texFormat;
277
278   /* map pipe format to base format */
279   if (util_format_get_component_bits(stimg->format,
280                                      UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
281      internalFormat = GL_RGBA;
282   else
283      internalFormat = GL_RGB;
284
285   stObj = st_texture_object(texObj);
286   stImage = st_texture_image(texImage);
287
288   /* switch to surface based */
289   if (!stObj->surface_based) {
290      _mesa_clear_texture_object(ctx, texObj, NULL);
291      stObj->surface_based = GL_TRUE;
292   }
293
294   /* TODO RequiredTextureImageUnits should probably be reset back
295    * to 1 somewhere if different texture is bound??
296    */
297   if (!native_supported) {
298      switch (stimg->format) {
299      case PIPE_FORMAT_NV12:
300         if (stimg->texture->format == PIPE_FORMAT_R8_G8B8_420_UNORM) {
301            texFormat = MESA_FORMAT_R8G8B8X8_UNORM;
302            texObj->RequiredTextureImageUnits = 1;
303         } else {
304            texFormat = MESA_FORMAT_R_UNORM8;
305            texObj->RequiredTextureImageUnits = 2;
306         }
307         break;
308      case PIPE_FORMAT_P010:
309      case PIPE_FORMAT_P012:
310      case PIPE_FORMAT_P016:
311         texFormat = MESA_FORMAT_R_UNORM16;
312         texObj->RequiredTextureImageUnits = 2;
313         break;
314      case PIPE_FORMAT_Y210:
315      case PIPE_FORMAT_Y212:
316      case PIPE_FORMAT_Y216:
317         texFormat = MESA_FORMAT_RG_UNORM16;
318         texObj->RequiredTextureImageUnits = 2;
319         break;
320      case PIPE_FORMAT_Y410:
321         texFormat = MESA_FORMAT_B10G10R10A2_UNORM;
322         internalFormat = GL_RGBA;
323         texObj->RequiredTextureImageUnits = 1;
324         break;
325      case PIPE_FORMAT_Y412:
326      case PIPE_FORMAT_Y416:
327         texFormat = MESA_FORMAT_RGBA_UNORM16;
328         internalFormat = GL_RGBA;
329         texObj->RequiredTextureImageUnits = 1;
330         break;
331      case PIPE_FORMAT_IYUV:
332         texFormat = MESA_FORMAT_R_UNORM8;
333         texObj->RequiredTextureImageUnits = 3;
334         break;
335      case PIPE_FORMAT_YUYV:
336      case PIPE_FORMAT_UYVY:
337         if (stimg->texture->format == PIPE_FORMAT_R8G8_R8B8_UNORM) {
338            texFormat = MESA_FORMAT_RG_RB_UNORM8;
339            texObj->RequiredTextureImageUnits = 1;
340         } else if (stimg->texture->format == PIPE_FORMAT_G8R8_B8R8_UNORM) {
341            texFormat = MESA_FORMAT_GR_BR_UNORM8;
342            texObj->RequiredTextureImageUnits = 1;
343         } else {
344            texFormat = MESA_FORMAT_RG_UNORM8;
345            texObj->RequiredTextureImageUnits = 2;
346         }
347         break;
348      case PIPE_FORMAT_AYUV:
349         texFormat = MESA_FORMAT_R8G8B8A8_UNORM;
350         internalFormat = GL_RGBA;
351         texObj->RequiredTextureImageUnits = 1;
352         break;
353      case PIPE_FORMAT_XYUV:
354         texFormat = MESA_FORMAT_R8G8B8X8_UNORM;
355         texObj->RequiredTextureImageUnits = 1;
356         break;
357      default:
358         unreachable("unexpected emulated format");
359         break;
360      }
361   } else {
362      texFormat = st_pipe_format_to_mesa_format(stimg->format);
363      /* Use previously derived internalformat as specified by
364       * EXT_EGL_image_storage.
365       */
366      if (tex_storage && texObj->Target == GL_TEXTURE_2D
367          && stimg->internalformat) {
368         internalFormat = stimg->internalformat;
369         if (internalFormat == GL_NONE) {
370            _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
371            return;
372         }
373      }
374   }
375   assert(texFormat != MESA_FORMAT_NONE);
376
377
378   /* Minify texture size based on level set on the EGLImage. */
379   uint32_t width = u_minify(stimg->texture->width0, stimg->level);
380   uint32_t height = u_minify(stimg->texture->height0, stimg->level);
381
382   _mesa_init_teximage_fields(ctx, texImage, width, height,
383                              1, 0, internalFormat, texFormat);
384
385   pipe_resource_reference(&stObj->pt, stimg->texture);
386   st_texture_release_all_sampler_views(st, stObj);
387   pipe_resource_reference(&stImage->pt, stObj->pt);
388   if (st->screen->resource_changed)
389      st->screen->resource_changed(st->screen, stImage->pt);
390
391   stObj->surface_format = stimg->format;
392   stObj->level_override = stimg->level;
393   stObj->layer_override = stimg->layer;
394
395   _mesa_dirty_texobj(ctx, texObj);
396}
397
398static void
399st_egl_image_target_texture_2d(struct gl_context *ctx, GLenum target,
400			       struct gl_texture_object *texObj,
401			       struct gl_texture_image *texImage,
402			       GLeglImageOES image_handle)
403{
404   struct st_egl_image stimg;
405   bool native_supported;
406
407   if (!st_get_egl_image(ctx, image_handle, PIPE_BIND_SAMPLER_VIEW,
408                         "glEGLImageTargetTexture2D", &stimg,
409                         &native_supported))
410      return;
411
412   st_bind_egl_image(ctx, texObj, texImage, &stimg,
413                     target != GL_TEXTURE_EXTERNAL_OES,
414                     native_supported);
415   pipe_resource_reference(&stimg.texture, NULL);
416}
417
418static void
419st_egl_image_target_tex_storage(struct gl_context *ctx, GLenum target,
420                                struct gl_texture_object *texObj,
421                                struct gl_texture_image *texImage,
422                                GLeglImageOES image_handle)
423{
424   struct st_egl_image stimg;
425   bool native_supported;
426
427   if (!st_get_egl_image(ctx, image_handle, PIPE_BIND_SAMPLER_VIEW,
428                         "glEGLImageTargetTexture2D", &stimg,
429                         &native_supported))
430      return;
431
432   st_bind_egl_image(ctx, texObj, texImage, &stimg, true, native_supported);
433   pipe_resource_reference(&stimg.texture, NULL);
434}
435
436static GLboolean
437st_validate_egl_image(struct gl_context *ctx, GLeglImageOES image_handle)
438{
439   struct st_context *st = st_context(ctx);
440   struct st_manager *smapi =
441      (struct st_manager *) st->iface.st_context_private;
442
443   return smapi->validate_egl_image(smapi, (void *)image_handle);
444}
445
446void
447st_init_eglimage_functions(struct dd_function_table *functions,
448                           bool has_egl_image_validate)
449{
450   functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
451   functions->EGLImageTargetTexStorage = st_egl_image_target_tex_storage;
452   functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
453
454   if (has_egl_image_validate)
455      functions->ValidateEGLImage = st_validate_egl_image;
456}
457