1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* TUNGSTEN GRAPHICS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
**************************************************************************/
#include "main/mtypes.h"
#include "main/context.h"
#include "main/imports.h"
#include "main/get.h"
const GLubyte * GLAPIENTRY _es_GetString(GLenum name);
static const GLubyte *
compute_es_version(void)
{
GET_CURRENT_CONTEXT(ctx);
static const char es_2_0[] = "OpenGL ES 2.0";
/* OpenGL ES 2.0 is derived from OpenGL 2.0 */
const GLboolean ver_2_0 = (ctx->Extensions.ARB_multisample &&
ctx->Extensions.ARB_multitexture &&
ctx->Extensions.ARB_texture_compression &&
ctx->Extensions.ARB_texture_cube_map &&
ctx->Extensions.ARB_texture_mirrored_repeat &&
ctx->Extensions.EXT_blend_color &&
ctx->Extensions.EXT_blend_func_separate &&
ctx->Extensions.EXT_blend_minmax &&
ctx->Extensions.EXT_blend_subtract &&
ctx->Extensions.EXT_stencil_wrap &&
ctx->Extensions.ARB_vertex_buffer_object &&
ctx->Extensions.ARB_shader_objects &&
ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader &&
ctx->Extensions.ARB_texture_non_power_of_two &&
ctx->Extensions.EXT_blend_equation_separate);
if (!ver_2_0)
_mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support.");
return (const GLubyte *) es_2_0;
}
static size_t
append_extension(char **str, const char *ext)
{
char *s = *str;
size_t len = strlen(ext);
if (s) {
memcpy(s, ext, len);
s[len++] = ' ';
s[len] = '\0';
*str += len;
}
else {
len++;
}
return len;
}
static size_t
make_extension_string(const GLcontext *ctx, char *str)
{
size_t len = 0;
len += append_extension(&str, "GL_OES_compressed_paletted_texture");
if (ctx->Extensions.ARB_framebuffer_object) {
len += append_extension(&str, "GL_OES_depth24");
len += append_extension(&str, "GL_OES_depth32");
len += append_extension(&str, "GL_OES_fbo_render_mipmap");
len += append_extension(&str, "GL_OES_rgb8_rgba8");
len += append_extension(&str, "GL_OES_stencil1");
len += append_extension(&str, "GL_OES_stencil4");
}
if (ctx->Extensions.EXT_vertex_array)
len += append_extension(&str, "GL_OES_element_index_uint");
if (ctx->Extensions.ARB_vertex_buffer_object)
len += append_extension(&str, "GL_OES_mapbuffer");
if (ctx->Extensions.EXT_texture3D)
len += append_extension(&str, "GL_OES_texture_3D");
if (ctx->Extensions.ARB_texture_non_power_of_two)
len += append_extension(&str, "GL_OES_texture_npot");
if (ctx->Extensions.EXT_texture_filter_anisotropic)
len += append_extension(&str, "GL_EXT_texture_filter_anisotropic");
len += append_extension(&str, "GL_EXT_texture_type_2_10_10_10_REV");
if (ctx->Extensions.ARB_depth_texture)
len += append_extension(&str, "GL_OES_depth_texture");
if (ctx->Extensions.EXT_packed_depth_stencil)
len += append_extension(&str, "GL_OES_packed_depth_stencil");
if (ctx->Extensions.ARB_fragment_shader)
len += append_extension(&str, "GL_OES_standard_derivatives");
if (ctx->Extensions.EXT_texture_compression_s3tc)
len += append_extension(&str, "GL_EXT_texture_compression_dxt1");
if (ctx->Extensions.EXT_blend_minmax)
len += append_extension(&str, "GL_EXT_blend_minmax");
if (ctx->Extensions.EXT_multi_draw_arrays)
len += append_extension(&str, "GL_EXT_multi_draw_arrays");
#if FEATURE_OES_EGL_image
if (ctx->Extensions.OES_EGL_image)
len += append_extension(&str, "GL_OES_EGL_image");
#endif
return len;
}
static const GLubyte *
compute_es_extensions(void)
{
GET_CURRENT_CONTEXT(ctx);
if (!ctx->Extensions.String) {
char *s;
unsigned int len;
len = make_extension_string(ctx, NULL);
s = (char *) malloc(len + 1);
if (!s)
return NULL;
make_extension_string(ctx, s);
ctx->Extensions.String = (const GLubyte *) s;
}
return ctx->Extensions.String;
}
const GLubyte * GLAPIENTRY
_es_GetString(GLenum name)
{
switch (name) {
case GL_VERSION:
return compute_es_version();
case GL_SHADING_LANGUAGE_VERSION:
return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16";
case GL_EXTENSIONS:
return compute_es_extensions();
default:
return _mesa_GetString(name);
}
}
void
_mesa_initialize_context_extra(GLcontext *ctx)
{
ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
ctx->Point.PointSprite = GL_TRUE; /* always on for ES 2.x */
}
|
