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/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 usage)43 is_format_supported(struct pipe_screen *screen, enum pipe_format format,
44 unsigned nr_samples, unsigned usage)
45 {
46 bool supported = screen->is_format_supported(screen, format, PIPE_TEXTURE_2D,
47 nr_samples, usage);
48
49 /* for sampling, some formats can be emulated.. it doesn't matter that
50 * the surface will have a format that the driver can't cope with because
51 * we'll give it sampler view formats that it can deal with and generate
52 * a shader variant that converts.
53 */
54 if ((usage == PIPE_BIND_SAMPLER_VIEW) && !supported) {
55 if (format == PIPE_FORMAT_IYUV) {
56 supported = screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
57 PIPE_TEXTURE_2D, nr_samples,
58 usage);
59 } else if (format == PIPE_FORMAT_NV12) {
60 supported = screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
61 PIPE_TEXTURE_2D, nr_samples,
62 usage) &&
63 screen->is_format_supported(screen, PIPE_FORMAT_R8G8_UNORM,
64 PIPE_TEXTURE_2D, nr_samples,
65 usage);
66 }
67 }
68
69 return supported;
70 }
71
72 /**
73 * Return the gallium texture of an EGLImage.
74 */
75 static bool
st_get_egl_image(struct gl_context * ctx,GLeglImageOES image_handle,unsigned usage,const char * error,struct st_egl_image * out)76 st_get_egl_image(struct gl_context *ctx, GLeglImageOES image_handle,
77 unsigned usage, const char *error, struct st_egl_image *out)
78 {
79 struct st_context *st = st_context(ctx);
80 struct pipe_screen *screen = st->pipe->screen;
81 struct st_manager *smapi =
82 (struct st_manager *) st->iface.st_context_private;
83
84 if (!smapi || !smapi->get_egl_image)
85 return false;
86
87 memset(out, 0, sizeof(*out));
88 if (!smapi->get_egl_image(smapi, (void *) image_handle, out)) {
89 /* image_handle does not refer to a valid EGL image object */
90 _mesa_error(ctx, GL_INVALID_VALUE, "%s(image handle not found)", error);
91 return false;
92 }
93
94 if (!is_format_supported(screen, out->format, out->texture->nr_samples, usage)) {
95 /* unable to specify a texture object using the specified EGL image */
96 pipe_resource_reference(&out->texture, NULL);
97 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(format not supported)", error);
98 return false;
99 }
100
101 return true;
102 }
103
104 /**
105 * Return the base format just like _mesa_base_fbo_format does.
106 */
107 static GLenum
st_pipe_format_to_base_format(enum pipe_format format)108 st_pipe_format_to_base_format(enum pipe_format format)
109 {
110 GLenum base_format;
111
112 if (util_format_is_depth_or_stencil(format)) {
113 if (util_format_is_depth_and_stencil(format)) {
114 base_format = GL_DEPTH_STENCIL;
115 }
116 else {
117 if (format == PIPE_FORMAT_S8_UINT)
118 base_format = GL_STENCIL_INDEX;
119 else
120 base_format = GL_DEPTH_COMPONENT;
121 }
122 }
123 else {
124 /* is this enough? */
125 if (util_format_has_alpha(format))
126 base_format = GL_RGBA;
127 else
128 base_format = GL_RGB;
129 }
130
131 return base_format;
132 }
133
134 static void
st_egl_image_target_renderbuffer_storage(struct gl_context * ctx,struct gl_renderbuffer * rb,GLeglImageOES image_handle)135 st_egl_image_target_renderbuffer_storage(struct gl_context *ctx,
136 struct gl_renderbuffer *rb,
137 GLeglImageOES image_handle)
138 {
139 struct st_renderbuffer *strb = st_renderbuffer(rb);
140 struct st_egl_image stimg;
141
142 if (st_get_egl_image(ctx, image_handle, PIPE_BIND_RENDER_TARGET,
143 "glEGLImageTargetRenderbufferStorage",
144 &stimg)) {
145 struct pipe_context *pipe = st_context(ctx)->pipe;
146 struct pipe_surface *ps, surf_tmpl;
147
148 u_surface_default_template(&surf_tmpl, stimg.texture);
149 surf_tmpl.format = stimg.format;
150 surf_tmpl.u.tex.level = stimg.level;
151 surf_tmpl.u.tex.first_layer = stimg.layer;
152 surf_tmpl.u.tex.last_layer = stimg.layer;
153 ps = pipe->create_surface(pipe, stimg.texture, &surf_tmpl);
154 pipe_resource_reference(&stimg.texture, NULL);
155
156 if (!ps)
157 return;
158
159 strb->Base.Width = ps->width;
160 strb->Base.Height = ps->height;
161 strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
162 strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
163 strb->Base.InternalFormat = strb->Base._BaseFormat;
164
165 struct pipe_surface **psurf =
166 util_format_is_srgb(ps->format) ? &strb->surface_srgb :
167 &strb->surface_linear;
168
169 pipe_surface_reference(psurf, ps);
170 strb->surface = *psurf;
171 pipe_resource_reference(&strb->texture, ps->texture);
172
173 pipe_surface_reference(&ps, NULL);
174 }
175 }
176
177 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)178 st_bind_egl_image(struct gl_context *ctx,
179 struct gl_texture_object *texObj,
180 struct gl_texture_image *texImage,
181 struct st_egl_image *stimg)
182 {
183 struct st_context *st = st_context(ctx);
184 struct st_texture_object *stObj;
185 struct st_texture_image *stImage;
186 GLenum internalFormat;
187 mesa_format texFormat;
188
189 /* map pipe format to base format */
190 if (util_format_get_component_bits(stimg->format,
191 UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
192 internalFormat = GL_RGBA;
193 else
194 internalFormat = GL_RGB;
195
196 stObj = st_texture_object(texObj);
197 stImage = st_texture_image(texImage);
198
199 /* switch to surface based */
200 if (!stObj->surface_based) {
201 _mesa_clear_texture_object(ctx, texObj, NULL);
202 stObj->surface_based = GL_TRUE;
203 }
204
205 texFormat = st_pipe_format_to_mesa_format(stimg->format);
206
207 /* TODO RequiredTextureImageUnits should probably be reset back
208 * to 1 somewhere if different texture is bound??
209 */
210 if (texFormat == MESA_FORMAT_NONE) {
211 switch (stimg->format) {
212 case PIPE_FORMAT_NV12:
213 texFormat = MESA_FORMAT_R_UNORM8;
214 texObj->RequiredTextureImageUnits = 2;
215 break;
216 case PIPE_FORMAT_IYUV:
217 texFormat = MESA_FORMAT_R_UNORM8;
218 texObj->RequiredTextureImageUnits = 3;
219 break;
220 default:
221 unreachable("bad YUV format!");
222 }
223 }
224
225 _mesa_init_teximage_fields(ctx, texImage,
226 stimg->texture->width0, stimg->texture->height0,
227 1, 0, internalFormat, texFormat);
228
229 pipe_resource_reference(&stObj->pt, stimg->texture);
230 st_texture_release_all_sampler_views(st, stObj);
231 pipe_resource_reference(&stImage->pt, stObj->pt);
232
233 stObj->surface_format = stimg->format;
234 stObj->level_override = stimg->level;
235 stObj->layer_override = stimg->layer;
236
237 _mesa_dirty_texobj(ctx, texObj);
238 }
239
240 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)241 st_egl_image_target_texture_2d(struct gl_context *ctx, GLenum target,
242 struct gl_texture_object *texObj,
243 struct gl_texture_image *texImage,
244 GLeglImageOES image_handle)
245 {
246 struct st_egl_image stimg;
247
248 if (!st_get_egl_image(ctx, image_handle, PIPE_BIND_SAMPLER_VIEW,
249 "glEGLImageTargetTexture2D", &stimg))
250 return;
251
252 st_bind_egl_image(ctx, texObj, texImage, &stimg);
253 pipe_resource_reference(&stimg.texture, NULL);
254 }
255
256 void
st_init_eglimage_functions(struct dd_function_table * functions)257 st_init_eglimage_functions(struct dd_function_table *functions)
258 {
259 functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
260 functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
261 }
262