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/texobj.h"
29 #include "main/teximage.h"
30 #include "util/u_inlines.h"
31 #include "util/u_format.h"
32 #include "st_cb_eglimage.h"
33 #include "st_cb_fbo.h"
34 #include "st_context.h"
35 #include "st_texture.h"
36 #include "st_format.h"
37 #include "st_manager.h"
38 #include "st_sampler_view.h"
39
40
41 /**
42 * Return the base format just like _mesa_base_fbo_format does.
43 */
44 static GLenum
st_pipe_format_to_base_format(enum pipe_format format)45 st_pipe_format_to_base_format(enum pipe_format format)
46 {
47 GLenum base_format;
48
49 if (util_format_is_depth_or_stencil(format)) {
50 if (util_format_is_depth_and_stencil(format)) {
51 base_format = GL_DEPTH_STENCIL;
52 }
53 else {
54 if (format == PIPE_FORMAT_S8_UINT)
55 base_format = GL_STENCIL_INDEX;
56 else
57 base_format = GL_DEPTH_COMPONENT;
58 }
59 }
60 else {
61 /* is this enough? */
62 if (util_format_has_alpha(format))
63 base_format = GL_RGBA;
64 else
65 base_format = GL_RGB;
66 }
67
68 return base_format;
69 }
70
71 static void
st_egl_image_target_renderbuffer_storage(struct gl_context * ctx,struct gl_renderbuffer * rb,GLeglImageOES image_handle)72 st_egl_image_target_renderbuffer_storage(struct gl_context *ctx,
73 struct gl_renderbuffer *rb,
74 GLeglImageOES image_handle)
75 {
76 struct st_context *st = st_context(ctx);
77 struct st_renderbuffer *strb = st_renderbuffer(rb);
78 struct pipe_surface *ps;
79
80 ps = st_manager_get_egl_image_surface(st, (void *) image_handle);
81 if (ps) {
82 strb->Base.Width = ps->width;
83 strb->Base.Height = ps->height;
84 strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
85 strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
86 strb->Base.InternalFormat = strb->Base._BaseFormat;
87
88 pipe_surface_reference(&strb->surface, ps);
89 pipe_resource_reference(&strb->texture, ps->texture);
90
91 pipe_surface_reference(&ps, NULL);
92 }
93 }
94
95 static void
st_bind_surface(struct gl_context * ctx,GLenum target,struct gl_texture_object * texObj,struct gl_texture_image * texImage,struct pipe_surface * ps)96 st_bind_surface(struct gl_context *ctx, GLenum target,
97 struct gl_texture_object *texObj,
98 struct gl_texture_image *texImage,
99 struct pipe_surface *ps)
100 {
101 struct st_context *st = st_context(ctx);
102 struct st_texture_object *stObj;
103 struct st_texture_image *stImage;
104 GLenum internalFormat;
105 mesa_format texFormat;
106
107 /* map pipe format to base format */
108 if (util_format_get_component_bits(ps->format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
109 internalFormat = GL_RGBA;
110 else
111 internalFormat = GL_RGB;
112
113 stObj = st_texture_object(texObj);
114 stImage = st_texture_image(texImage);
115
116 /* switch to surface based */
117 if (!stObj->surface_based) {
118 _mesa_clear_texture_object(ctx, texObj);
119 stObj->surface_based = GL_TRUE;
120 }
121
122 texFormat = st_pipe_format_to_mesa_format(ps->format);
123
124 /* TODO RequiredTextureImageUnits should probably be reset back
125 * to 1 somewhere if different texture is bound??
126 */
127 if (texFormat == MESA_FORMAT_NONE) {
128 switch (ps->format) {
129 case PIPE_FORMAT_NV12:
130 texFormat = MESA_FORMAT_R_UNORM8;
131 texObj->RequiredTextureImageUnits = 2;
132 break;
133 case PIPE_FORMAT_IYUV:
134 texFormat = MESA_FORMAT_R_UNORM8;
135 texObj->RequiredTextureImageUnits = 3;
136 break;
137 default:
138 unreachable("bad YUV format!");
139 }
140 }
141
142 _mesa_init_teximage_fields(ctx, texImage,
143 ps->width, ps->height, 1, 0, internalFormat,
144 texFormat);
145
146 /* FIXME create a non-default sampler view from the pipe_surface? */
147 pipe_resource_reference(&stObj->pt, ps->texture);
148 st_texture_release_all_sampler_views(st, stObj);
149 pipe_resource_reference(&stImage->pt, stObj->pt);
150
151 stObj->surface_format = ps->format;
152
153 _mesa_dirty_texobj(ctx, texObj);
154 }
155
156 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)157 st_egl_image_target_texture_2d(struct gl_context *ctx, GLenum target,
158 struct gl_texture_object *texObj,
159 struct gl_texture_image *texImage,
160 GLeglImageOES image_handle)
161 {
162 struct st_context *st = st_context(ctx);
163 struct pipe_surface *ps;
164
165 ps = st_manager_get_egl_image_surface(st, (void *) image_handle);
166 if (ps) {
167 st_bind_surface(ctx, target, texObj, texImage, ps);
168 pipe_surface_reference(&ps, NULL);
169 }
170 }
171
172 void
st_init_eglimage_functions(struct dd_function_table * functions)173 st_init_eglimage_functions(struct dd_function_table *functions)
174 {
175 functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
176 functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
177 }
178