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 
42 static bool
is_format_supported(struct pipe_screen * screen,enum pipe_format format,unsigned nr_samples,unsigned nr_storage_samples,unsigned usage,bool * native_supported)43 is_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 
143 static bool
is_nv12_as_r8_g8b8_supported(struct pipe_screen * screen,struct st_egl_image * out,unsigned usage,bool * native_supported)144 is_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  */
165 static bool
st_get_egl_image(struct gl_context * ctx,GLeglImageOES image_handle,unsigned usage,const char * error,struct st_egl_image * out,bool * native_supported)166 st_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  */
202 static GLenum
st_pipe_format_to_base_format(enum pipe_format format)203 st_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 
229 static void
st_egl_image_target_renderbuffer_storage(struct gl_context * ctx,struct gl_renderbuffer * rb,GLeglImageOES image_handle)230 st_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 
264 static void
st_bind_egl_image(struct gl_context * ctx,struct gl_texture_object * texObj,struct gl_texture_image * texImage,struct st_egl_image * stimg,bool tex_storage,bool native_supported)265 st_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 
398 static void
st_egl_image_target_texture_2d(struct gl_context * ctx,GLenum target,struct gl_texture_object * texObj,struct gl_texture_image * texImage,GLeglImageOES image_handle)399 st_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 
418 static void
st_egl_image_target_tex_storage(struct gl_context * ctx,GLenum target,struct gl_texture_object * texObj,struct gl_texture_image * texImage,GLeglImageOES image_handle)419 st_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 
436 static GLboolean
st_validate_egl_image(struct gl_context * ctx,GLeglImageOES image_handle)437 st_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 
446 void
st_init_eglimage_functions(struct dd_function_table * functions,bool has_egl_image_validate)447 st_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