1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.9
4 *
5 * Copyright (C) 2010 LunarG Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Chia-I Wu <olv@lunarg.com>
27 */
28
29 #include "main/mfeatures.h"
30 #include "main/texobj.h"
31 #include "main/teximage.h"
32 #include "util/u_inlines.h"
33 #include "util/u_format.h"
34 #include "st_cb_eglimage.h"
35 #include "st_cb_fbo.h"
36 #include "st_context.h"
37 #include "st_texture.h"
38 #include "st_format.h"
39 #include "st_manager.h"
40
41 #if FEATURE_OES_EGL_image
42
43 /**
44 * Return the base format just like _mesa_base_fbo_format does.
45 */
46 static GLenum
st_pipe_format_to_base_format(enum pipe_format format)47 st_pipe_format_to_base_format(enum pipe_format format)
48 {
49 GLenum base_format;
50
51 if (util_format_is_depth_or_stencil(format)) {
52 if (util_format_is_depth_and_stencil(format)) {
53 base_format = GL_DEPTH_STENCIL;
54 }
55 else {
56 if (format == PIPE_FORMAT_S8_UINT)
57 base_format = GL_STENCIL_INDEX;
58 else
59 base_format = GL_DEPTH_COMPONENT;
60 }
61 }
62 else {
63 /* is this enough? */
64 if (util_format_has_alpha(format))
65 base_format = GL_RGBA;
66 else
67 base_format = GL_RGB;
68 }
69
70 return base_format;
71 }
72
73 static void
st_egl_image_target_renderbuffer_storage(struct gl_context * ctx,struct gl_renderbuffer * rb,GLeglImageOES image_handle)74 st_egl_image_target_renderbuffer_storage(struct gl_context *ctx,
75 struct gl_renderbuffer *rb,
76 GLeglImageOES image_handle)
77 {
78 struct st_context *st = st_context(ctx);
79 struct st_renderbuffer *strb = st_renderbuffer(rb);
80 struct pipe_surface *ps;
81 unsigned usage;
82
83 usage = PIPE_BIND_RENDER_TARGET;
84 ps = st_manager_get_egl_image_surface(st, (void *) image_handle, usage);
85 if (ps) {
86 strb->Base.Width = ps->width;
87 strb->Base.Height = ps->height;
88 strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
89 strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
90 strb->Base.InternalFormat = strb->Base._BaseFormat;
91
92 pipe_surface_reference(&strb->surface, ps);
93 pipe_resource_reference(&strb->texture, ps->texture);
94
95 pipe_surface_reference(&ps, NULL);
96 }
97 }
98
99 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)100 st_bind_surface(struct gl_context *ctx, GLenum target,
101 struct gl_texture_object *texObj,
102 struct gl_texture_image *texImage,
103 struct pipe_surface *ps)
104 {
105 struct st_texture_object *stObj;
106 struct st_texture_image *stImage;
107 GLenum internalFormat;
108 gl_format texFormat;
109
110 /* map pipe format to base format */
111 if (util_format_get_component_bits(ps->format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
112 internalFormat = GL_RGBA;
113 else
114 internalFormat = GL_RGB;
115
116 stObj = st_texture_object(texObj);
117 stImage = st_texture_image(texImage);
118
119 /* switch to surface based */
120 if (!stObj->surface_based) {
121 _mesa_clear_texture_object(ctx, texObj);
122 stObj->surface_based = GL_TRUE;
123 }
124
125 texFormat = st_pipe_format_to_mesa_format(ps->format);
126
127 _mesa_init_teximage_fields(ctx, texImage,
128 ps->width, ps->height, 1, 0, internalFormat,
129 texFormat);
130
131 /* FIXME create a non-default sampler view from the pipe_surface? */
132 pipe_resource_reference(&stObj->pt, ps->texture);
133 pipe_sampler_view_reference(&stObj->sampler_view, NULL);
134 pipe_resource_reference(&stImage->pt, stObj->pt);
135
136 stObj->width0 = ps->width;
137 stObj->height0 = ps->height;
138 stObj->depth0 = 1;
139
140 _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
141 }
142
143 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)144 st_egl_image_target_texture_2d(struct gl_context *ctx, GLenum target,
145 struct gl_texture_object *texObj,
146 struct gl_texture_image *texImage,
147 GLeglImageOES image_handle)
148 {
149 struct st_context *st = st_context(ctx);
150 struct pipe_surface *ps;
151 unsigned usage;
152
153 usage = PIPE_BIND_SAMPLER_VIEW;
154 ps = st_manager_get_egl_image_surface(st, (void *) image_handle, usage);
155 if (ps) {
156 st_bind_surface(ctx, target, texObj, texImage, ps);
157 pipe_surface_reference(&ps, NULL);
158 }
159 }
160
161 void
st_init_eglimage_functions(struct dd_function_table * functions)162 st_init_eglimage_functions(struct dd_function_table *functions)
163 {
164 functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
165 functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
166 }
167
168 #endif /* FEATURE_OES_EGL_image */
169