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gerrit-public.fairphone.software / platform / external / angle / b8490f3c368bd2407980ed7df7810b3d84b20b68 / . / src / libGLESv2 / formatutils.cpp
blob: 13445c436b4086f641251bd2d00b44681721d97b [file] [log] [blame]
shannonwoods@chromium.orgb8490f32013-05-30 00:08:00 +0000[diff] [blame^]1#include "precompiled.h"
2//
3// Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style license that can be
5// found in the LICENSE file.
6//
7
8// formatutils.cpp: Queries for GL image formats.
9
10#include "libGLESv2/formatutils.h"
11#include "libGLESv2/Context.h"
12#include "libGLESv2/mathutil.h"
13#include "libGLESv2/renderer/Renderer.h"
14
15namespace gl
16{
17
18// ES2 requires that format is equal to internal format at all glTex*Image2D entry points and the implementation
19// can decide the true, sized, internal format. The ES2FormatMap determines the internal format for all valid
20// format and type combinations.
21
22typedef std::pair<GLenum, GLenum> FormatTypePair;
23typedef std::pair<FormatTypePair, GLint> FormatPair;
24typedef std::map<FormatTypePair, GLint> FormatMap;
25
26// A helper function to insert data into the D3D11LoadFunctionMap with fewer characters.
27static inline void insertFormatMapping(FormatMap *map, GLenum format, GLenum type, GLint internalFormat)
28{
29 map->insert(FormatPair(FormatTypePair(format, type), internalFormat));
30}
31
32FormatMap buildES2FormatMap()
33{
34 FormatMap map;
35
36 // | Format | Type | Internal format |
37 insertFormatMapping(&map, GL_ALPHA, GL_UNSIGNED_BYTE, GL_ALPHA8_EXT );
38 insertFormatMapping(&map, GL_ALPHA, GL_FLOAT, GL_ALPHA32F_EXT );
39 insertFormatMapping(&map, GL_ALPHA, GL_HALF_FLOAT_OES, GL_ALPHA16F_EXT );
40
41 insertFormatMapping(&map, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_LUMINANCE8_EXT );
42 insertFormatMapping(&map, GL_LUMINANCE, GL_FLOAT, GL_LUMINANCE32F_EXT );
43 insertFormatMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT_OES, GL_LUMINANCE16F_EXT );
44
45 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, GL_LUMINANCE8_ALPHA8_EXT );
46 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_LUMINANCE_ALPHA32F_EXT );
47 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES, GL_LUMINANCE_ALPHA16F_EXT );
48
49 insertFormatMapping(&map, GL_RGB, GL_UNSIGNED_BYTE, GL_RGB8_OES );
50 insertFormatMapping(&map, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_RGB565 );
51 insertFormatMapping(&map, GL_RGB, GL_FLOAT, GL_RGB32F_EXT );
52 insertFormatMapping(&map, GL_RGB, GL_HALF_FLOAT_OES, GL_RGB16F_EXT );
53
54 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_BYTE, GL_RGBA8_OES );
55 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_RGBA4 );
56 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, GL_RGB5_A1 );
57 insertFormatMapping(&map, GL_RGBA, GL_FLOAT, GL_RGBA32F_EXT );
58 insertFormatMapping(&map, GL_RGBA, GL_HALF_FLOAT_OES, GL_RGBA16F_EXT );
59
60 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_BGRA8_EXT );
61 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, GL_BGRA4_ANGLEX );
62 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, GL_BGR5_A1_ANGLEX );
63
64 insertFormatMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGB_S3TC_DXT1_EXT );
65 insertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT );
66 insertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE);
67 insertFormatMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE);
68
69 insertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_DEPTH_COMPONENT16 );
70 insertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_DEPTH_COMPONENT32_OES );
71
72 insertFormatMapping(&map, GL_DEPTH_STENCIL_OES, GL_UNSIGNED_INT_24_8_OES, GL_DEPTH24_STENCIL8_OES );
73
74 return map;
75}
76
77static const FormatMap &getES2FormatMap()
78{
79 static const FormatMap es2FormatMap = buildES2FormatMap();
80 return es2FormatMap;
81}
82
83FormatMap buildES3FormatMap()
84{
85 FormatMap map;
86
87 // | Format | Type | Internal format |
88 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_BYTE, GL_RGBA8 );
89 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, GL_RGBA4 );
90 insertFormatMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, GL_RGB5_A1 );
91 insertFormatMapping(&map, GL_RGBA, GL_FLOAT, GL_RGBA32F );
92 insertFormatMapping(&map, GL_RGBA, GL_HALF_FLOAT, GL_RGBA16F );
93
94 insertFormatMapping(&map, GL_RGB, GL_UNSIGNED_BYTE, GL_RGB8 );
95 insertFormatMapping(&map, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, GL_RGB565 );
96 insertFormatMapping(&map, GL_RGB, GL_FLOAT, GL_RGB32F );
97 insertFormatMapping(&map, GL_RGB, GL_HALF_FLOAT, GL_RGB16F );
98
99 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, GL_LUMINANCE8_ALPHA8_EXT );
100 insertFormatMapping(&map, GL_LUMINANCE, GL_UNSIGNED_BYTE, GL_LUMINANCE8_EXT );
101 insertFormatMapping(&map, GL_ALPHA, GL_UNSIGNED_BYTE, GL_ALPHA8_EXT );
102 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_FLOAT, GL_LUMINANCE_ALPHA32F_EXT);
103 insertFormatMapping(&map, GL_LUMINANCE, GL_FLOAT, GL_LUMINANCE32F_EXT );
104 insertFormatMapping(&map, GL_ALPHA, GL_FLOAT, GL_ALPHA32F_EXT );
105 insertFormatMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, GL_LUMINANCE_ALPHA16F_EXT);
106 insertFormatMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT, GL_LUMINANCE16F_EXT );
107 insertFormatMapping(&map, GL_ALPHA, GL_HALF_FLOAT, GL_ALPHA16F_EXT );
108
109 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GL_BGRA8_EXT );
110 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, GL_BGRA4_ANGLEX );
111 insertFormatMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, GL_BGR5_A1_ANGLEX );
112
113 insertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, GL_DEPTH_COMPONENT16 );
114 insertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, GL_DEPTH_COMPONENT24 );
115 insertFormatMapping(&map, GL_DEPTH_COMPONENT, GL_FLOAT, GL_DEPTH_COMPONENT32F );
116
117 insertFormatMapping(&map, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, GL_DEPTH24_STENCIL8 );
118 insertFormatMapping(&map, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, GL_DEPTH32F_STENCIL8 );
119
120 return map;
121}
122
123struct FormatInfo
124{
125 GLint mInternalformat;
126 GLenum mFormat;
127 GLenum mType;
128
129 FormatInfo(GLint internalformat, GLenum format, GLenum type)
130 : mInternalformat(internalformat), mFormat(format), mType(type) { }
131
132 bool operator<(const FormatInfo& other) const
133 {
134 return memcmp(this, &other, sizeof(FormatInfo)) < 0;
135 }
136};
137
138// ES3 has a specific set of permutations of internal formats, formats and types which are acceptable.
139typedef std::set<FormatInfo> ES3FormatSet;
140
141ES3FormatSet buildES3FormatSet()
142{
143 ES3FormatSet set;
144
145 // Format combinations from ES 3.0.1 spec, table 3.2
146
147 // | Internal format | Format | Type |
148 // | | | |
149 set.insert(FormatInfo(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE ));
150 set.insert(FormatInfo(GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_BYTE ));
151 set.insert(FormatInfo(GL_RGBA4, GL_RGBA, GL_UNSIGNED_BYTE ));
152 set.insert(FormatInfo(GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_BYTE ));
153 set.insert(FormatInfo(GL_RGBA8_SNORM, GL_RGBA, GL_BYTE ));
154 set.insert(FormatInfo(GL_RGBA4, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 ));
155 set.insert(FormatInfo(GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV ));
156 set.insert(FormatInfo(GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV ));
157 set.insert(FormatInfo(GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT ));
158 set.insert(FormatInfo(GL_RGBA32F, GL_RGBA, GL_FLOAT ));
159 set.insert(FormatInfo(GL_RGBA16F, GL_RGBA, GL_FLOAT ));
160 set.insert(FormatInfo(GL_RGBA8UI, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE ));
161 set.insert(FormatInfo(GL_RGBA8I, GL_RGBA_INTEGER, GL_BYTE ));
162 set.insert(FormatInfo(GL_RGBA16UI, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT ));
163 set.insert(FormatInfo(GL_RGBA16I, GL_RGBA_INTEGER, GL_SHORT ));
164 set.insert(FormatInfo(GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT ));
165 set.insert(FormatInfo(GL_RGBA32I, GL_RGBA_INTEGER, GL_INT ));
166 set.insert(FormatInfo(GL_RGB10_A2UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV ));
167 set.insert(FormatInfo(GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE ));
168 set.insert(FormatInfo(GL_RGB565, GL_RGB, GL_UNSIGNED_BYTE ));
169 set.insert(FormatInfo(GL_SRGB8, GL_RGB, GL_UNSIGNED_BYTE ));
170 set.insert(FormatInfo(GL_RGB8_SNORM, GL_RGB, GL_BYTE ));
171 set.insert(FormatInfo(GL_RGB565, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 ));
172 set.insert(FormatInfo(GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV ));
173 set.insert(FormatInfo(GL_RGB9_E5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV ));
174 set.insert(FormatInfo(GL_RGB16F, GL_RGB, GL_HALF_FLOAT ));
175 set.insert(FormatInfo(GL_R11F_G11F_B10F, GL_RGB, GL_HALF_FLOAT ));
176 set.insert(FormatInfo(GL_RGB9_E5, GL_RGB, GL_HALF_FLOAT ));
177 set.insert(FormatInfo(GL_RGB32F, GL_RGB, GL_FLOAT ));
178 set.insert(FormatInfo(GL_RGB16F, GL_RGB, GL_FLOAT ));
179 set.insert(FormatInfo(GL_R11F_G11F_B10F, GL_RGB, GL_FLOAT ));
180 set.insert(FormatInfo(GL_RGB9_E5, GL_RGB, GL_FLOAT ));
181 set.insert(FormatInfo(GL_RGB8UI, GL_RGB_INTEGER, GL_UNSIGNED_BYTE ));
182 set.insert(FormatInfo(GL_RGB8I, GL_RGB_INTEGER, GL_BYTE ));
183 set.insert(FormatInfo(GL_RGB16UI, GL_RGB_INTEGER, GL_UNSIGNED_SHORT ));
184 set.insert(FormatInfo(GL_RGB16I, GL_RGB_INTEGER, GL_SHORT ));
185 set.insert(FormatInfo(GL_RGB32UI, GL_RGB_INTEGER, GL_UNSIGNED_INT ));
186 set.insert(FormatInfo(GL_RGB32I, GL_RGB_INTEGER, GL_INT ));
187 set.insert(FormatInfo(GL_RG8, GL_RG, GL_UNSIGNED_BYTE ));
188 set.insert(FormatInfo(GL_RG8_SNORM, GL_RG, GL_BYTE ));
189 set.insert(FormatInfo(GL_RG16F, GL_RG, GL_HALF_FLOAT ));
190 set.insert(FormatInfo(GL_RG32F, GL_RG, GL_FLOAT ));
191 set.insert(FormatInfo(GL_RG16F, GL_RG, GL_FLOAT ));
192 set.insert(FormatInfo(GL_RG8UI, GL_RG_INTEGER, GL_UNSIGNED_BYTE ));
193 set.insert(FormatInfo(GL_RG8I, GL_RG_INTEGER, GL_BYTE ));
194 set.insert(FormatInfo(GL_RG16UI, GL_RG_INTEGER, GL_UNSIGNED_SHORT ));
195 set.insert(FormatInfo(GL_RG16I, GL_RG_INTEGER, GL_SHORT ));
196 set.insert(FormatInfo(GL_RG32UI, GL_RG_INTEGER, GL_UNSIGNED_INT ));
197 set.insert(FormatInfo(GL_RG32I, GL_RG_INTEGER, GL_INT ));
198 set.insert(FormatInfo(GL_R8, GL_RED, GL_UNSIGNED_BYTE ));
199 set.insert(FormatInfo(GL_R8_SNORM, GL_RED, GL_BYTE ));
200 set.insert(FormatInfo(GL_R16F, GL_RED, GL_HALF_FLOAT ));
201 set.insert(FormatInfo(GL_R32F, GL_RED, GL_FLOAT ));
202 set.insert(FormatInfo(GL_R16F, GL_RED, GL_FLOAT ));
203 set.insert(FormatInfo(GL_R8UI, GL_RED_INTEGER, GL_UNSIGNED_BYTE ));
204 set.insert(FormatInfo(GL_R8I, GL_RED_INTEGER, GL_BYTE ));
205 set.insert(FormatInfo(GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT ));
206 set.insert(FormatInfo(GL_R16I, GL_RED_INTEGER, GL_SHORT ));
207 set.insert(FormatInfo(GL_R32UI, GL_RED_INTEGER, GL_UNSIGNED_INT ));
208 set.insert(FormatInfo(GL_R32I, GL_RED_INTEGER, GL_INT ));
209
210 // Unsized formats
211 set.insert(FormatInfo(GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE ));
212 set.insert(FormatInfo(GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4 ));
213 set.insert(FormatInfo(GL_RGBA, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1 ));
214 set.insert(FormatInfo(GL_RGB, GL_RGB, GL_UNSIGNED_BYTE ));
215 set.insert(FormatInfo(GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5 ));
216 set.insert(FormatInfo(GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE ));
217 set.insert(FormatInfo(GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE ));
218 set.insert(FormatInfo(GL_ALPHA, GL_ALPHA, GL_UNSIGNED_BYTE ));
219
220 // Depth stencil formats
221 set.insert(FormatInfo(GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT ));
222 set.insert(FormatInfo(GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT ));
223 set.insert(FormatInfo(GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT ));
224 set.insert(FormatInfo(GL_DEPTH_COMPONENT32F, GL_DEPTH_COMPONENT, GL_FLOAT ));
225 set.insert(FormatInfo(GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8 ));
226 set.insert(FormatInfo(GL_DEPTH32F_STENCIL8, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV));
227
228 // From GL_OES_texture_float
229 set.insert(FormatInfo(GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_FLOAT ));
230 set.insert(FormatInfo(GL_LUMINANCE, GL_LUMINANCE, GL_FLOAT ));
231 set.insert(FormatInfo(GL_ALPHA, GL_ALPHA, GL_FLOAT ));
232
233 // From GL_OES_texture_half_float
234 set.insert(FormatInfo(GL_LUMINANCE_ALPHA, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT ));
235 set.insert(FormatInfo(GL_LUMINANCE, GL_LUMINANCE, GL_HALF_FLOAT ));
236 set.insert(FormatInfo(GL_ALPHA, GL_ALPHA, GL_HALF_FLOAT ));
237
238 // From GL_EXT_texture_storage
239 // | Internal format | Format | Type |
240 // | | | |
241 set.insert(FormatInfo(GL_ALPHA8_EXT, GL_ALPHA, GL_UNSIGNED_BYTE ));
242 set.insert(FormatInfo(GL_LUMINANCE8_EXT, GL_LUMINANCE, GL_UNSIGNED_BYTE ));
243 set.insert(FormatInfo(GL_LUMINANCE8_ALPHA8_EXT, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE ));
244 set.insert(FormatInfo(GL_ALPHA32F_EXT, GL_ALPHA, GL_FLOAT ));
245 set.insert(FormatInfo(GL_LUMINANCE32F_EXT, GL_LUMINANCE, GL_FLOAT ));
246 set.insert(FormatInfo(GL_LUMINANCE_ALPHA32F_EXT, GL_LUMINANCE_ALPHA, GL_FLOAT ));
247 set.insert(FormatInfo(GL_ALPHA16F_EXT, GL_ALPHA, GL_HALF_FLOAT ));
248 set.insert(FormatInfo(GL_LUMINANCE16F_EXT, GL_LUMINANCE, GL_HALF_FLOAT ));
249 set.insert(FormatInfo(GL_LUMINANCE_ALPHA16F_EXT, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT ));
250
251 set.insert(FormatInfo(GL_BGRA8_EXT, GL_BGRA_EXT, GL_UNSIGNED_BYTE ));
252 set.insert(FormatInfo(GL_BGRA4_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT));
253 set.insert(FormatInfo(GL_BGRA4_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_BYTE ));
254 set.insert(FormatInfo(GL_BGR5_A1_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT));
255 set.insert(FormatInfo(GL_BGR5_A1_ANGLEX, GL_BGRA_EXT, GL_UNSIGNED_BYTE ));
256
257 // From GL_ANGLE_depth_texture
258 set.insert(FormatInfo(GL_DEPTH_COMPONENT32_OES, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT_24_8_OES ));
259
260 // Compressed formats
261 // From ES 3.0.1 spec, table 3.16
262 // | Internal format | Format | Type |
263 // | | | |
264 set.insert(FormatInfo(GL_COMPRESSED_R11_EAC, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE));
265 set.insert(FormatInfo(GL_COMPRESSED_R11_EAC, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE));
266 set.insert(FormatInfo(GL_COMPRESSED_SIGNED_R11_EAC, GL_COMPRESSED_SIGNED_R11_EAC, GL_UNSIGNED_BYTE));
267 set.insert(FormatInfo(GL_COMPRESSED_RG11_EAC, GL_COMPRESSED_RG11_EAC, GL_UNSIGNED_BYTE));
268 set.insert(FormatInfo(GL_COMPRESSED_SIGNED_RG11_EAC, GL_COMPRESSED_SIGNED_RG11_EAC, GL_UNSIGNED_BYTE));
269 set.insert(FormatInfo(GL_COMPRESSED_RGB8_ETC2, GL_COMPRESSED_RGB8_ETC2, GL_UNSIGNED_BYTE));
270 set.insert(FormatInfo(GL_COMPRESSED_SRGB8_ETC2, GL_COMPRESSED_SRGB8_ETC2, GL_UNSIGNED_BYTE));
271 set.insert(FormatInfo(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE));
272 set.insert(FormatInfo(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE));
273 set.insert(FormatInfo(GL_COMPRESSED_RGBA8_ETC2_EAC, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_UNSIGNED_BYTE));
274 set.insert(FormatInfo(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_UNSIGNED_BYTE));
275
276
277 // From GL_EXT_texture_compression_dxt1
278 set.insert(FormatInfo(GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE));
279 set.insert(FormatInfo(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE));
280
281 // From GL_ANGLE_texture_compression_dxt3
282 set.insert(FormatInfo(GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE));
283
284 // From GL_ANGLE_texture_compression_dxt5
285 set.insert(FormatInfo(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE));
286
287 return set;
288}
289
290static const ES3FormatSet &getES3FormatSet()
291{
292 static const ES3FormatSet es3FormatSet = buildES3FormatSet();
293 return es3FormatSet;
294}
295
296// Map of sizes of input types
297struct TypeInfo
298{
299 GLuint mTypeBytes;
300 bool mSpecialInterpretation;
301
302 TypeInfo()
303 : mTypeBytes(0), mSpecialInterpretation(false) { }
304
305 TypeInfo(GLuint typeBytes, bool specialInterpretation)
306 : mTypeBytes(typeBytes), mSpecialInterpretation(specialInterpretation) { }
307
308 bool operator<(const TypeInfo& other) const
309 {
310 return memcmp(this, &other, sizeof(TypeInfo)) < 0;
311 }
312};
313
314typedef std::pair<GLenum, TypeInfo> TypeInfoPair;
315typedef std::map<GLenum, TypeInfo> TypeInfoMap;
316
317static TypeInfoMap buildTypeInfoMap()
318{
319 TypeInfoMap map;
320
321 map.insert(TypeInfoPair(GL_UNSIGNED_BYTE, TypeInfo( 1, false)));
322 map.insert(TypeInfoPair(GL_BYTE, TypeInfo( 1, false)));
323 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT, TypeInfo( 2, false)));
324 map.insert(TypeInfoPair(GL_SHORT, TypeInfo( 2, false)));
325 map.insert(TypeInfoPair(GL_UNSIGNED_INT, TypeInfo( 4, false)));
326 map.insert(TypeInfoPair(GL_INT, TypeInfo( 4, false)));
327 map.insert(TypeInfoPair(GL_HALF_FLOAT, TypeInfo( 2, false)));
328 map.insert(TypeInfoPair(GL_FLOAT, TypeInfo( 4, false)));
329 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT_5_6_5, TypeInfo( 2, true )));
330 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT_4_4_4_4, TypeInfo( 2, true )));
331 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT_5_5_5_1, TypeInfo( 2, true )));
332 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, TypeInfo( 2, true )));
333 map.insert(TypeInfoPair(GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, TypeInfo( 2, true )));
334 map.insert(TypeInfoPair(GL_UNSIGNED_INT_2_10_10_10_REV, TypeInfo( 4, true )));
335 map.insert(TypeInfoPair(GL_UNSIGNED_INT_24_8, TypeInfo( 4, true )));
336 map.insert(TypeInfoPair(GL_UNSIGNED_INT_10F_11F_11F_REV, TypeInfo( 4, true )));
337 map.insert(TypeInfoPair(GL_UNSIGNED_INT_5_9_9_9_REV, TypeInfo( 4, true )));
338 map.insert(TypeInfoPair(GL_FLOAT_32_UNSIGNED_INT_24_8_REV, TypeInfo( 4, true )));
339 map.insert(TypeInfoPair(GL_UNSIGNED_INT_24_8_OES, TypeInfo( 4, true )));
340
341 return map;
342}
343
344static bool getTypeInfo(GLenum type, TypeInfo *outTypeInfo)
345{
346 static const TypeInfoMap infoMap = buildTypeInfoMap();
347 TypeInfoMap::const_iterator iter = infoMap.find(type);
348 if (iter != infoMap.end())
349 {
350 if (outTypeInfo)
351 {
352 *outTypeInfo = iter->second;
353 }
354 return true;
355 }
356 else
357 {
358 return false;
359 }
360}
361
362// Information about internal formats
363typedef bool ((Context::*ContextSupportCheckMemberFunction)(void) const);
364typedef bool (*ContextSupportCheckFunction)(const Context *context);
365
366typedef bool ((rx::Renderer::*RendererSupportCheckMemberFunction)(void) const);
367typedef bool (*ContextRendererSupportCheckFunction)(const Context *context, const rx::Renderer *renderer);
368
369template <ContextSupportCheckMemberFunction func>
370bool CheckSupport(const Context *context)
371{
372 return (context->*func)();
373}
374
375template <ContextSupportCheckMemberFunction contextFunc, RendererSupportCheckMemberFunction rendererFunc>
376bool CheckSupport(const Context *context, const rx::Renderer *renderer)
377{
378 if (context)
379 {
380 return (context->*contextFunc)();
381 }
382 else if (renderer)
383 {
384 return (renderer->*rendererFunc)();
385 }
386 else
387 {
388 UNREACHABLE();
389 return false;
390 }
391}
392
393template <typename objectType>
394bool AlwaysSupported(const objectType*)
395{
396 return true;
397}
398
399template <typename objectTypeA, typename objectTypeB>
400bool AlwaysSupported(const objectTypeA*, const objectTypeB*)
401{
402 return true;
403}
404
405template <typename objectType>
406bool NeverSupported(const objectType*)
407{
408 return false;
409}
410
411template <typename objectTypeA, typename objectTypeB>
412bool NeverSupported(const objectTypeA *, const objectTypeB *)
413{
414 return false;
415}
416
417template <typename objectType>
418bool UnimplementedSupport(const objectType*)
419{
420 UNIMPLEMENTED();
421 return false;
422}
423
424template <typename objectTypeA, typename objectTypeB>
425bool UnimplementedSupport(const objectTypeA*, const objectTypeB*)
426{
427 UNIMPLEMENTED();
428 return false;
429}
430
431
432struct InternalFormatInfo
433{
434 GLuint mRedBits;
435 GLuint mGreenBits;
436 GLuint mBlueBits;
437
438 GLuint mLuminanceBits;
439
440 GLuint mAlphaBits;
441 GLuint mSharedBits;
442
443 GLuint mDepthBits;
444 GLuint mStencilBits;
445
446 GLuint mPixelBits;
447
448 GLuint mComponentCount;
449
450 bool mIsCompressed;
451 GLuint mCompressedBlockWidth;
452 GLuint mCompressedBlockHeight;
453
454 GLenum mFormat;
455 GLenum mType;
456
457 ContextRendererSupportCheckFunction mIsColorRenderable;
458 ContextRendererSupportCheckFunction mIsDepthRenderable;
459 ContextRendererSupportCheckFunction mIsStencilRenderable;
460 ContextRendererSupportCheckFunction mIsTextureFilterable;
461
462 ContextSupportCheckFunction mSupportFunction;
463
464 InternalFormatInfo() : mRedBits(0), mGreenBits(0), mBlueBits(0), mLuminanceBits(0), mAlphaBits(0), mSharedBits(0), mDepthBits(0), mStencilBits(0),
465 mPixelBits(0), mComponentCount(0), mIsCompressed(false), mCompressedBlockWidth(0), mCompressedBlockHeight(0), mFormat(GL_NONE), mType(GL_NONE),
466 mIsColorRenderable(NeverSupported), mIsDepthRenderable(NeverSupported), mIsStencilRenderable(NeverSupported),
467 mIsTextureFilterable(NeverSupported), mSupportFunction(NeverSupported)
468 {
469 }
470
471 static InternalFormatInfo UnsizedFormat(GLenum format, ContextSupportCheckFunction supportFunction)
472 {
473 InternalFormatInfo formatInfo;
474 formatInfo.mFormat = format;
475 formatInfo.mSupportFunction = supportFunction;
476 return formatInfo;
477 }
478
479 static InternalFormatInfo RGBAFormat(GLuint red, GLuint green, GLuint blue, GLuint alpha, GLuint shared,
480 GLenum format, GLenum type, ContextRendererSupportCheckFunction colorRenderable,
481 ContextRendererSupportCheckFunction textureFilterable,
482 ContextSupportCheckFunction supportFunction)
483 {
484 InternalFormatInfo formatInfo;
485 formatInfo.mRedBits = red;
486 formatInfo.mGreenBits = green;
487 formatInfo.mBlueBits = blue;
488 formatInfo.mAlphaBits = alpha;
489 formatInfo.mSharedBits = shared;
490 formatInfo.mPixelBits = red + green + blue + alpha + shared;
491 formatInfo.mComponentCount = ((red > 0) ? 1 : 0) + ((green > 0) ? 1 : 0) + ((blue > 0) ? 1 : 0) + ((alpha > 0) ? 1 : 0);
492 formatInfo.mFormat = format;
493 formatInfo.mType = type;
494 formatInfo.mIsColorRenderable = colorRenderable;
495 formatInfo.mIsTextureFilterable = textureFilterable;
496 formatInfo.mSupportFunction = supportFunction;
497 return formatInfo;
498 }
499
500 static InternalFormatInfo LUMAFormat(GLuint luminance, GLuint alpha, GLenum format, GLenum type,
501 ContextSupportCheckFunction supportFunction)
502 {
503 InternalFormatInfo formatInfo;
504 formatInfo.mLuminanceBits = luminance;
505 formatInfo.mAlphaBits = alpha;
506 formatInfo.mPixelBits = luminance + alpha;
507 formatInfo.mComponentCount = ((luminance > 0) ? 1 : 0) + ((alpha > 0) ? 1 : 0);
508 formatInfo.mFormat = format;
509 formatInfo.mType = type;
510 formatInfo.mIsTextureFilterable = AlwaysSupported;
511 formatInfo.mSupportFunction = supportFunction;
512 return formatInfo;
513 }
514
515 static InternalFormatInfo DepthStencilFormat(GLuint depth, GLuint stencil, GLenum format, GLenum type,
516 ContextRendererSupportCheckFunction depthRenderable,
517 ContextRendererSupportCheckFunction stencilRenderable,
518 ContextSupportCheckFunction supportFunction)
519 {
520 InternalFormatInfo formatInfo;
521 formatInfo.mDepthBits = depth;
522 formatInfo.mStencilBits = stencil;
523 formatInfo.mPixelBits = depth + stencil;
524 formatInfo.mComponentCount = ((depth > 0) ? 1 : 0) + ((stencil > 0) ? 1 : 0);
525 formatInfo.mFormat = format;
526 formatInfo.mType = type;
527 formatInfo.mIsDepthRenderable = depthRenderable;
528 formatInfo.mIsStencilRenderable = stencilRenderable;
529 formatInfo.mSupportFunction = supportFunction;
530 return formatInfo;
531 }
532
533 static InternalFormatInfo CompressedFormat(GLuint compressedBlockWidth, GLuint compressedBlockHeight,
534 GLuint compressedBlockSize, GLuint componentCount, GLenum format, GLenum type,
535 ContextSupportCheckFunction supportFunction)
536 {
537 InternalFormatInfo formatInfo;
538 formatInfo.mIsCompressed = true;
539 formatInfo.mCompressedBlockWidth = compressedBlockWidth;
540 formatInfo.mCompressedBlockHeight = compressedBlockHeight;
541 formatInfo.mPixelBits = compressedBlockSize;
542 formatInfo.mComponentCount = componentCount;
543 formatInfo.mFormat = format;
544 formatInfo.mType = type;
545 formatInfo.mIsTextureFilterable = AlwaysSupported;
546 formatInfo.mSupportFunction = supportFunction;
547 return formatInfo;
548 }
549};
550
551typedef std::pair<GLuint, InternalFormatInfo> InternalFormatInfoPair;
552typedef std::map<GLuint, InternalFormatInfo> InternalFormatInfoMap;
553
554static InternalFormatInfoMap buildES3InternalFormatInfoMap()
555{
556 InternalFormatInfoMap map;
557
558 // From ES 3.0.1 spec, table 3.12
559 map.insert(InternalFormatInfoPair(GL_NONE, InternalFormatInfo()));
560
561 // | Internal format | | R | G | B | A |S | Format | Type | Color | Texture | Supported |
562 // | | | | | | | | | | renderable | filterable | |
563 map.insert(InternalFormatInfoPair(GL_R8, InternalFormatInfo::RGBAFormat( 8, 0, 0, 0, 0, GL_RED, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, UnimplementedSupport)));
564 map.insert(InternalFormatInfoPair(GL_R8_SNORM, InternalFormatInfo::RGBAFormat( 8, 0, 0, 0, 0, GL_RED, GL_BYTE, NeverSupported, AlwaysSupported, UnimplementedSupport)));
565 map.insert(InternalFormatInfoPair(GL_RG8, InternalFormatInfo::RGBAFormat( 8, 8, 0, 0, 0, GL_RG, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, UnimplementedSupport)));
566 map.insert(InternalFormatInfoPair(GL_RG8_SNORM, InternalFormatInfo::RGBAFormat( 8, 8, 0, 0, 0, GL_RG, GL_BYTE, NeverSupported, AlwaysSupported, UnimplementedSupport)));
567 map.insert(InternalFormatInfoPair(GL_RGB8, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
568 map.insert(InternalFormatInfoPair(GL_RGB8_SNORM, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_BYTE, NeverSupported, AlwaysSupported, UnimplementedSupport)));
569 map.insert(InternalFormatInfoPair(GL_RGB565, InternalFormatInfo::RGBAFormat( 5, 6, 5, 0, 0, GL_RGB, GL_UNSIGNED_SHORT_5_5_5_1, NeverSupported, AlwaysSupported, AlwaysSupported )));
570 map.insert(InternalFormatInfoPair(GL_RGBA4, InternalFormatInfo::RGBAFormat( 4, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, NeverSupported, AlwaysSupported, AlwaysSupported )));
571 map.insert(InternalFormatInfoPair(GL_RGB5_A1, InternalFormatInfo::RGBAFormat( 5, 5, 5, 1, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
572 map.insert(InternalFormatInfoPair(GL_RGBA8, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
573 map.insert(InternalFormatInfoPair(GL_RGBA8_SNORM, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_BYTE, NeverSupported, AlwaysSupported, UnimplementedSupport)));
574 map.insert(InternalFormatInfoPair(GL_RGB10_A2, InternalFormatInfo::RGBAFormat(10, 10, 10, 2, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, AlwaysSupported, AlwaysSupported, UnimplementedSupport)));
575 map.insert(InternalFormatInfoPair(GL_RGB10_A2UI, InternalFormatInfo::RGBAFormat(10, 10, 10, 2, 0, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, AlwaysSupported, NeverSupported, UnimplementedSupport)));
576 map.insert(InternalFormatInfoPair(GL_SRGB8, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, NeverSupported, AlwaysSupported, AlwaysSupported )));
577 map.insert(InternalFormatInfoPair(GL_SRGB8_ALPHA8, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
578 map.insert(InternalFormatInfoPair(GL_R11F_G11F_B10F, InternalFormatInfo::RGBAFormat(11, 11, 10, 0, 0, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, NeverSupported, AlwaysSupported, UnimplementedSupport)));
579 map.insert(InternalFormatInfoPair(GL_RGB9_E5, InternalFormatInfo::RGBAFormat( 9, 9, 9, 0, 5, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, NeverSupported, AlwaysSupported, UnimplementedSupport)));
580 map.insert(InternalFormatInfoPair(GL_R8I, InternalFormatInfo::RGBAFormat( 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
581 map.insert(InternalFormatInfoPair(GL_R8UI, InternalFormatInfo::RGBAFormat( 8, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
582 map.insert(InternalFormatInfoPair(GL_R16I, InternalFormatInfo::RGBAFormat(16, 0, 0, 0, 0, GL_RED_INTEGER, GL_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
583 map.insert(InternalFormatInfoPair(GL_R16UI, InternalFormatInfo::RGBAFormat(16, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
584 map.insert(InternalFormatInfoPair(GL_R32I, InternalFormatInfo::RGBAFormat(32, 0, 0, 0, 0, GL_RED_INTEGER, GL_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
585 map.insert(InternalFormatInfoPair(GL_R32UI, InternalFormatInfo::RGBAFormat(32, 0, 0, 0, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
586 map.insert(InternalFormatInfoPair(GL_RG8I, InternalFormatInfo::RGBAFormat( 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
587 map.insert(InternalFormatInfoPair(GL_RG8UI, InternalFormatInfo::RGBAFormat( 8, 8, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
588 map.insert(InternalFormatInfoPair(GL_RG16I, InternalFormatInfo::RGBAFormat(16, 16, 0, 0, 0, GL_RG_INTEGER, GL_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
589 map.insert(InternalFormatInfoPair(GL_RG16UI, InternalFormatInfo::RGBAFormat(16, 16, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
590 map.insert(InternalFormatInfoPair(GL_RG32I, InternalFormatInfo::RGBAFormat(32, 32, 0, 0, 0, GL_RG_INTEGER, GL_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
591 map.insert(InternalFormatInfoPair(GL_RG32UI, InternalFormatInfo::RGBAFormat(32, 32, 0, 0, 0, GL_RG_INTEGER, GL_UNSIGNED_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
592 map.insert(InternalFormatInfoPair(GL_RGB8I, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_BYTE, NeverSupported, NeverSupported, UnimplementedSupport)));
593 map.insert(InternalFormatInfoPair(GL_RGB8UI, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, NeverSupported, NeverSupported, UnimplementedSupport)));
594 map.insert(InternalFormatInfoPair(GL_RGB16I, InternalFormatInfo::RGBAFormat(16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_SHORT, NeverSupported, NeverSupported, UnimplementedSupport)));
595 map.insert(InternalFormatInfoPair(GL_RGB16UI, InternalFormatInfo::RGBAFormat(16, 16, 16, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, NeverSupported, NeverSupported, UnimplementedSupport)));
596 map.insert(InternalFormatInfoPair(GL_RGB32I, InternalFormatInfo::RGBAFormat(32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_INT, NeverSupported, NeverSupported, UnimplementedSupport)));
597 map.insert(InternalFormatInfoPair(GL_RGB32UI, InternalFormatInfo::RGBAFormat(32, 32, 32, 0, 0, GL_RGB_INTEGER, GL_UNSIGNED_INT, NeverSupported, NeverSupported, UnimplementedSupport)));
598 map.insert(InternalFormatInfoPair(GL_RGBA8I, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
599 map.insert(InternalFormatInfoPair(GL_RGBA8UI, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, AlwaysSupported, NeverSupported, UnimplementedSupport)));
600 map.insert(InternalFormatInfoPair(GL_RGBA16I, InternalFormatInfo::RGBAFormat(16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
601 map.insert(InternalFormatInfoPair(GL_RGBA16UI, InternalFormatInfo::RGBAFormat(16, 16, 16, 16, 0, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
602 map.insert(InternalFormatInfoPair(GL_RGBA32I, InternalFormatInfo::RGBAFormat(32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
603 map.insert(InternalFormatInfoPair(GL_RGBA32UI, InternalFormatInfo::RGBAFormat(32, 32, 32, 32, 0, GL_RGBA_INTEGER, GL_UNSIGNED_INT, AlwaysSupported, NeverSupported, UnimplementedSupport)));
604
605 map.insert(InternalFormatInfoPair(GL_BGRA8_EXT, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
606 map.insert(InternalFormatInfoPair(GL_BGRA4_ANGLEX, InternalFormatInfo::RGBAFormat( 4, 4, 4, 4, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
607 map.insert(InternalFormatInfoPair(GL_BGR5_A1_ANGLEX, InternalFormatInfo::RGBAFormat( 5, 5, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, AlwaysSupported, AlwaysSupported, AlwaysSupported )));
608
609 // Floating point renderability and filtering is provided by OES_texture_float and OES_texture_half_float
610 // | Internal format | | D |S | Format | Type | Color | Texture | Supported |
611 // | | | | | | | renderable | filterable | |
612 map.insert(InternalFormatInfoPair(GL_R16F, InternalFormatInfo::RGBAFormat(16, 0, 0, 0, 0, GL_RED, GL_HALF_FLOAT, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, UnimplementedSupport)));
613 map.insert(InternalFormatInfoPair(GL_RG16F, InternalFormatInfo::RGBAFormat(16, 16, 0, 0, 0, GL_RG, GL_HALF_FLOAT, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, UnimplementedSupport)));
614 map.insert(InternalFormatInfoPair(GL_RGB16F, InternalFormatInfo::RGBAFormat(16, 16, 16, 0, 0, GL_RGB, GL_HALF_FLOAT, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, AlwaysSupported )));
615 map.insert(InternalFormatInfoPair(GL_RGBA16F, InternalFormatInfo::RGBAFormat(16, 16, 16, 16, 0, GL_RGBA, GL_HALF_FLOAT, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, AlwaysSupported )));
616 map.insert(InternalFormatInfoPair(GL_R32F, InternalFormatInfo::RGBAFormat(32, 0, 0, 0, 0, GL_RED, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, UnimplementedSupport)));
617 map.insert(InternalFormatInfoPair(GL_RG32F, InternalFormatInfo::RGBAFormat(32, 32, 0, 0, 0, GL_RG, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, UnimplementedSupport)));
618 map.insert(InternalFormatInfoPair(GL_RGB32F, InternalFormatInfo::RGBAFormat(32, 32, 32, 0, 0, GL_RGB, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, AlwaysSupported )));
619 map.insert(InternalFormatInfoPair(GL_RGBA32F, InternalFormatInfo::RGBAFormat(32, 32, 32, 32, 0, GL_RGBA, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, AlwaysSupported )));
620
621 // Depth stencil formats
622 // | Internal format | | D |S | Format | Type | Color | Texture | Supported |
623 // | | | | | | | renderable | filterable | |
624 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT16, InternalFormatInfo::DepthStencilFormat(16, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, AlwaysSupported, NeverSupported, AlwaysSupported)));
625 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT24, InternalFormatInfo::DepthStencilFormat(24, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, AlwaysSupported, NeverSupported, AlwaysSupported)));
626 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT32F,InternalFormatInfo::DepthStencilFormat(32, 0, GL_DEPTH_COMPONENT, GL_FLOAT, AlwaysSupported, NeverSupported, AlwaysSupported)));
627 map.insert(InternalFormatInfoPair(GL_DEPTH24_STENCIL8, InternalFormatInfo::DepthStencilFormat(24, 8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
628 map.insert(InternalFormatInfoPair(GL_DEPTH32F_STENCIL8, InternalFormatInfo::DepthStencilFormat(32, 8, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
629
630 // Luminance alpha formats
631 // | Internal format | | L | A | Format | Type | Supported |
632 // | | | | | | | |
633 map.insert(InternalFormatInfoPair(GL_ALPHA8_EXT, InternalFormatInfo::LUMAFormat( 0, 8, GL_ALPHA, GL_UNSIGNED_BYTE, AlwaysSupported)));
634 map.insert(InternalFormatInfoPair(GL_LUMINANCE8_EXT, InternalFormatInfo::LUMAFormat( 8, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, AlwaysSupported)));
635 map.insert(InternalFormatInfoPair(GL_ALPHA32F_EXT, InternalFormatInfo::LUMAFormat( 0, 32, GL_ALPHA, GL_FLOAT, AlwaysSupported)));
636 map.insert(InternalFormatInfoPair(GL_LUMINANCE32F_EXT, InternalFormatInfo::LUMAFormat(32, 0, GL_LUMINANCE, GL_FLOAT, AlwaysSupported)));
637 map.insert(InternalFormatInfoPair(GL_ALPHA16F_EXT, InternalFormatInfo::LUMAFormat( 0, 16, GL_ALPHA, GL_HALF_FLOAT, AlwaysSupported)));
638 map.insert(InternalFormatInfoPair(GL_LUMINANCE16F_EXT, InternalFormatInfo::LUMAFormat(16, 0, GL_LUMINANCE, GL_HALF_FLOAT, AlwaysSupported)));
639 map.insert(InternalFormatInfoPair(GL_LUMINANCE8_ALPHA8_EXT, InternalFormatInfo::LUMAFormat( 8, 8, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, AlwaysSupported)));
640 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA32F_EXT, InternalFormatInfo::LUMAFormat(32, 32, GL_LUMINANCE_ALPHA, GL_FLOAT, AlwaysSupported)));
641 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA16F_EXT, InternalFormatInfo::LUMAFormat(16, 16, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, AlwaysSupported)));
642
643 // Unsized formats
644 // | Internal format | | Format | Supported |
645 // | | | | |
646 map.insert(InternalFormatInfoPair(GL_ALPHA, InternalFormatInfo::UnsizedFormat(GL_ALPHA, AlwaysSupported)));
647 map.insert(InternalFormatInfoPair(GL_LUMINANCE, InternalFormatInfo::UnsizedFormat(GL_LUMINANCE, AlwaysSupported)));
648 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA, InternalFormatInfo::UnsizedFormat(GL_LUMINANCE_ALPHA, AlwaysSupported)));
649 map.insert(InternalFormatInfoPair(GL_RGB, InternalFormatInfo::UnsizedFormat(GL_RGB, AlwaysSupported)));
650 map.insert(InternalFormatInfoPair(GL_RGBA, InternalFormatInfo::UnsizedFormat(GL_RGBA, AlwaysSupported)));
651 map.insert(InternalFormatInfoPair(GL_BGRA_EXT, InternalFormatInfo::UnsizedFormat(GL_BGRA_EXT, AlwaysSupported)));
652
653 // Compressed formats, From ES 3.0.1 spec, table 3.16
654 // | Internal format | |W |H | B |C | Format | Type | Supported |
655 // | | | | | S |C | | | |
656 map.insert(InternalFormatInfoPair(GL_COMPRESSED_R11_EAC, InternalFormatInfo::CompressedFormat(4, 4, 64, 1, GL_COMPRESSED_R11_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
657 map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_R11_EAC, InternalFormatInfo::CompressedFormat(4, 4, 64, 1, GL_COMPRESSED_SIGNED_R11_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
658 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RG11_EAC, InternalFormatInfo::CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_RG11_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
659 map.insert(InternalFormatInfoPair(GL_COMPRESSED_SIGNED_RG11_EAC, InternalFormatInfo::CompressedFormat(4, 4, 128, 2, GL_COMPRESSED_SIGNED_RG11_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
660 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_ETC2, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_ETC2, GL_UNSIGNED_BYTE, UnimplementedSupport)));
661 map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ETC2, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_ETC2, GL_UNSIGNED_BYTE, UnimplementedSupport)));
662 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, UnimplementedSupport)));
663 map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, GL_UNSIGNED_BYTE, UnimplementedSupport)));
664 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA8_ETC2_EAC, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA8_ETC2_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
665 map.insert(InternalFormatInfoPair(GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, GL_UNSIGNED_BYTE, UnimplementedSupport)));
666
667 // From GL_EXT_texture_compression_dxt1
668 // | Internal format | |W |H | B |C | Format | Type | Supported |
669 // | | | | | S |C | | | |
670 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB_S3TC_DXT1_EXT, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, AlwaysSupported)));
671 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, InternalFormatInfo::CompressedFormat(4, 4, 64, 4, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, AlwaysSupported)));
672
673 // From GL_ANGLE_texture_compression_dxt3
674 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, AlwaysSupported)));
675
676 // From GL_ANGLE_texture_compression_dxt5
677 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, AlwaysSupported)));
678
679 return map;
680}
681
682static InternalFormatInfoMap buildES2InternalFormatInfoMap()
683{
684 InternalFormatInfoMap map;
685
686 // From ES 2.0.25 table 4.5
687 map.insert(InternalFormatInfoPair(GL_NONE, InternalFormatInfo()));
688
689 // | Internal format | | R | G | B | A |S | Format | Type | Color | Texture | Supported |
690 // | | | | | | | | | | renderable | filterable | |
691 map.insert(InternalFormatInfoPair(GL_RGBA4, InternalFormatInfo::RGBAFormat( 4, 4, 4, 4, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
692 map.insert(InternalFormatInfoPair(GL_RGB5_A1, InternalFormatInfo::RGBAFormat( 5, 5, 5, 1, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
693 map.insert(InternalFormatInfoPair(GL_RGB565, InternalFormatInfo::RGBAFormat( 5, 6, 5, 0, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_6_5, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
694
695 // Extension formats
696 map.insert(InternalFormatInfoPair(GL_RGB8_OES, InternalFormatInfo::RGBAFormat( 8, 8, 8, 0, 0, GL_RGB, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
697 map.insert(InternalFormatInfoPair(GL_RGBA8_OES, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
698 map.insert(InternalFormatInfoPair(GL_BGRA8_EXT, InternalFormatInfo::RGBAFormat( 8, 8, 8, 8, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, AlwaysSupported, AlwaysSupported, AlwaysSupported)));
699 map.insert(InternalFormatInfoPair(GL_BGRA4_ANGLEX, InternalFormatInfo::RGBAFormat( 4, 4, 4, 4, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4, NeverSupported, AlwaysSupported, AlwaysSupported)));
700 map.insert(InternalFormatInfoPair(GL_BGR5_A1_ANGLEX, InternalFormatInfo::RGBAFormat( 5, 5, 5, 1, 0, GL_BGRA_EXT, GL_UNSIGNED_SHORT_5_5_5_1, NeverSupported, AlwaysSupported, AlwaysSupported)));
701
702 // Floating point formats have to query the renderer for support
703 // | Internal format | | R | G | B | A |S | Format | Type | Color | Texture | Supported |
704 // | | | | | | | | | | renderable | filterable | |
705 map.insert(InternalFormatInfoPair(GL_RGB16F_EXT, InternalFormatInfo::RGBAFormat(16, 16, 16, 0, 0, GL_RGB, GL_HALF_FLOAT_OES, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, CheckSupport<&Context::supportsFloat16Textures>)));
706 map.insert(InternalFormatInfoPair(GL_RGB32F_EXT, InternalFormatInfo::RGBAFormat(32, 32, 32, 0, 0, GL_RGB, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, CheckSupport<&Context::supportsFloat32Textures>)));
707 map.insert(InternalFormatInfoPair(GL_RGBA16F_EXT, InternalFormatInfo::RGBAFormat(16, 16, 16, 16, 0, GL_RGBA, GL_HALF_FLOAT_OES, CheckSupport<&Context::supportsFloat16RenderableTextures, &rx::Renderer::getFloat16TextureRenderingSupport>, CheckSupport<&Context::supportsFloat16LinearFilter, &rx::Renderer::getFloat16TextureFilteringSupport>, CheckSupport<&Context::supportsFloat16Textures>)));
708 map.insert(InternalFormatInfoPair(GL_RGBA32F_EXT, InternalFormatInfo::RGBAFormat(32, 32, 32, 32, 0, GL_RGBA, GL_FLOAT, CheckSupport<&Context::supportsFloat32RenderableTextures, &rx::Renderer::getFloat32TextureRenderingSupport>, CheckSupport<&Context::supportsFloat32LinearFilter, &rx::Renderer::getFloat32TextureFilteringSupport>, CheckSupport<&Context::supportsFloat32Textures>)));
709
710 // Depth and stencil formats
711 // | Internal format | | D |S | Format | Type | Color | Texture | Supported |
712 // | | | | | | | renderable | filterable | |
713 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT32_OES,InternalFormatInfo::DepthStencilFormat(32, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, AlwaysSupported, NeverSupported, CheckSupport<&Context::supportsDepthTextures>)));
714 map.insert(InternalFormatInfoPair(GL_DEPTH24_STENCIL8_OES, InternalFormatInfo::DepthStencilFormat(24, 8, GL_DEPTH_STENCIL_OES, GL_UNSIGNED_INT_24_8_OES, AlwaysSupported, AlwaysSupported, CheckSupport<&Context::supportsDepthTextures>)));
715 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT16, InternalFormatInfo::DepthStencilFormat(16, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, AlwaysSupported, NeverSupported, AlwaysSupported)));
716 map.insert(InternalFormatInfoPair(GL_STENCIL_INDEX8, InternalFormatInfo::DepthStencilFormat( 0, 8, GL_DEPTH_STENCIL_OES, GL_UNSIGNED_BYTE, NeverSupported, AlwaysSupported, AlwaysSupported)));
717
718 // Unsized formats
719 // | Internal format | | Format | Supported |
720 // | | | | |
721 map.insert(InternalFormatInfoPair(GL_ALPHA, InternalFormatInfo::UnsizedFormat(GL_ALPHA, AlwaysSupported)));
722 map.insert(InternalFormatInfoPair(GL_LUMINANCE, InternalFormatInfo::UnsizedFormat(GL_LUMINANCE, AlwaysSupported)));
723 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA, InternalFormatInfo::UnsizedFormat(GL_LUMINANCE_ALPHA, AlwaysSupported)));
724 map.insert(InternalFormatInfoPair(GL_RGB, InternalFormatInfo::UnsizedFormat(GL_RGB, AlwaysSupported)));
725 map.insert(InternalFormatInfoPair(GL_RGBA, InternalFormatInfo::UnsizedFormat(GL_RGBA, AlwaysSupported)));
726 map.insert(InternalFormatInfoPair(GL_BGRA_EXT, InternalFormatInfo::UnsizedFormat(GL_BGRA_EXT, AlwaysSupported)));
727 map.insert(InternalFormatInfoPair(GL_DEPTH_COMPONENT, InternalFormatInfo::UnsizedFormat(GL_DEPTH_COMPONENT, AlwaysSupported)));
728 map.insert(InternalFormatInfoPair(GL_DEPTH_STENCIL_OES, InternalFormatInfo::UnsizedFormat(GL_DEPTH_STENCIL_OES, AlwaysSupported)));
729
730 // Luminance alpha formats from GL_EXT_texture_storage
731 // | Internal format | | L | A | Format | Type | Supported |
732 // | | | | | | | |
733 map.insert(InternalFormatInfoPair(GL_ALPHA8_EXT, InternalFormatInfo::LUMAFormat( 0, 8, GL_ALPHA, GL_UNSIGNED_BYTE, AlwaysSupported)));
734 map.insert(InternalFormatInfoPair(GL_LUMINANCE8_EXT, InternalFormatInfo::LUMAFormat( 8, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, AlwaysSupported)));
735 map.insert(InternalFormatInfoPair(GL_ALPHA32F_EXT, InternalFormatInfo::LUMAFormat( 0, 32, GL_ALPHA, GL_FLOAT, AlwaysSupported)));
736 map.insert(InternalFormatInfoPair(GL_LUMINANCE32F_EXT, InternalFormatInfo::LUMAFormat(32, 0, GL_LUMINANCE, GL_FLOAT, AlwaysSupported)));
737 map.insert(InternalFormatInfoPair(GL_ALPHA16F_EXT, InternalFormatInfo::LUMAFormat( 0, 16, GL_ALPHA, GL_HALF_FLOAT_OES, AlwaysSupported)));
738 map.insert(InternalFormatInfoPair(GL_LUMINANCE16F_EXT, InternalFormatInfo::LUMAFormat(16, 0, GL_LUMINANCE, GL_HALF_FLOAT_OES, AlwaysSupported)));
739 map.insert(InternalFormatInfoPair(GL_LUMINANCE8_ALPHA8_EXT, InternalFormatInfo::LUMAFormat( 8, 8, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, AlwaysSupported)));
740 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA32F_EXT, InternalFormatInfo::LUMAFormat(32, 32, GL_LUMINANCE_ALPHA, GL_FLOAT, AlwaysSupported)));
741 map.insert(InternalFormatInfoPair(GL_LUMINANCE_ALPHA16F_EXT, InternalFormatInfo::LUMAFormat(16, 16, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES, AlwaysSupported)));
742
743 // From GL_EXT_texture_compression_dxt1
744 // | Internal format | |W |H | B |C |Format | Type | Supported |
745 // | | | | | S |C | | | |
746 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGB_S3TC_DXT1_EXT, InternalFormatInfo::CompressedFormat(4, 4, 64, 3, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, CheckSupport<&Context::supportsDXT1Textures>)));
747 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, InternalFormatInfo::CompressedFormat(4, 4, 64, 4, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, CheckSupport<&Context::supportsDXT1Textures>)));
748
749 // From GL_ANGLE_texture_compression_dxt3
750 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, CheckSupport<&Context::supportsDXT3Textures>)));
751
752 // From GL_ANGLE_texture_compression_dxt5
753 map.insert(InternalFormatInfoPair(GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, InternalFormatInfo::CompressedFormat(4, 4, 128, 4, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, CheckSupport<&Context::supportsDXT5Textures>)));
754
755 return map;
756}
757
758static bool getInternalFormatInfo(GLint internalFormat, GLuint clientVersion, InternalFormatInfo *outFormatInfo)
759{
760 const InternalFormatInfoMap* map = NULL;
761
762 if (clientVersion == 2)
763 {
764 static const InternalFormatInfoMap formatMap = buildES2InternalFormatInfoMap();
765 map = &formatMap;
766 }
767 else if (clientVersion == 3)
768 {
769 static const InternalFormatInfoMap formatMap = buildES3InternalFormatInfoMap();
770 map = &formatMap;
771 }
772 else
773 {
774 UNREACHABLE();
775 }
776
777 InternalFormatInfoMap::const_iterator iter = map->find(internalFormat);
778 if (iter != map->end())
779 {
780 if (outFormatInfo)
781 {
782 *outFormatInfo = iter->second;
783 }
784 return true;
785 }
786 else
787 {
788 return false;
789 }
790}
791
792typedef std::set<GLenum> FormatSet;
793
794static FormatSet buildES2ValidFormatSet()
795{
796 static const FormatMap &formatMap = getES2FormatMap();
797
798 FormatSet set;
799
800 for (FormatMap::const_iterator i = formatMap.begin(); i != formatMap.end(); i++)
801 {
802 const FormatTypePair& formatPair = i->first;
803 set.insert(formatPair.first);
804 }
805
806 return set;
807}
808
809static FormatSet buildES3ValidFormatSet()
810{
811 static const ES3FormatSet &formatSet = getES3FormatSet();
812
813 FormatSet set;
814
815 for (ES3FormatSet::const_iterator i = formatSet.begin(); i != formatSet.end(); i++)
816 {
817 const FormatInfo& formatInfo = *i;
818 set.insert(formatInfo.mFormat);
819 }
820
821 return set;
822}
823
824typedef std::set<GLenum> TypeSet;
825
826static TypeSet buildES2ValidTypeSet()
827{
828 static const FormatMap &formatMap = getES2FormatMap();
829
830 TypeSet set;
831
832 for (FormatMap::const_iterator i = formatMap.begin(); i != formatMap.end(); i++)
833 {
834 const FormatTypePair& formatPair = i->first;
835 set.insert(formatPair.second);
836 }
837
838 return set;
839}
840
841static TypeSet buildES3ValidTypeSet()
842{
843 static const ES3FormatSet &formatSet = getES3FormatSet();
844
845 TypeSet set;
846
847 for (ES3FormatSet::const_iterator i = formatSet.begin(); i != formatSet.end(); i++)
848 {
849 const FormatInfo& formatInfo = *i;
850 set.insert(formatInfo.mType);
851 }
852
853 return set;
854}
855
856struct CopyConversion
857{
858 GLenum mTextureFormat;
859 GLenum mFramebufferFormat;
860
861 CopyConversion(GLenum textureFormat, GLenum framebufferFormat)
862 : mTextureFormat(textureFormat), mFramebufferFormat(framebufferFormat) { }
863
864 bool operator<(const CopyConversion& other) const
865 {
866 return memcmp(this, &other, sizeof(CopyConversion)) < 0;
867 }
868};
869
870typedef std::set<CopyConversion> CopyConversionSet;
871
872static CopyConversionSet buildValidES3CopyTexImageCombinations()
873{
874 CopyConversionSet set;
875
876 // From ES 3.0.1 spec, table 3.15
877 set.insert(CopyConversion(GL_ALPHA, GL_RGBA));
878 set.insert(CopyConversion(GL_LUMINANCE, GL_RED));
879 set.insert(CopyConversion(GL_LUMINANCE, GL_RG));
880 set.insert(CopyConversion(GL_LUMINANCE, GL_RGB));
881 set.insert(CopyConversion(GL_LUMINANCE, GL_RGBA));
882 set.insert(CopyConversion(GL_LUMINANCE_ALPHA, GL_RGBA));
883 set.insert(CopyConversion(GL_RED, GL_RED));
884 set.insert(CopyConversion(GL_RED, GL_RG));
885 set.insert(CopyConversion(GL_RED, GL_RGB));
886 set.insert(CopyConversion(GL_RED, GL_RGBA));
887 set.insert(CopyConversion(GL_RG, GL_RG));
888 set.insert(CopyConversion(GL_RG, GL_RGB));
889 set.insert(CopyConversion(GL_RG, GL_RGBA));
890 set.insert(CopyConversion(GL_RGB, GL_RGB));
891 set.insert(CopyConversion(GL_RGB, GL_RGBA));
892 set.insert(CopyConversion(GL_RGBA, GL_RGBA));
893
894 return set;
895}
896
897bool IsValidInternalFormat(GLint internalFormat, const Context *context)
898{
899 if (!context)
900 {
901 return false;
902 }
903
904 InternalFormatInfo internalFormatInfo;
905 if (getInternalFormatInfo(internalFormat, context->getClientVersion(), &internalFormatInfo))
906 {
907 ASSERT(internalFormatInfo.mSupportFunction != NULL);
908 return internalFormatInfo.mSupportFunction(context);
909 }
910 else
911 {
912 return false;
913 }
914}
915
916bool IsValidFormat(GLenum format, GLuint clientVersion)
917{
918 if (clientVersion == 2)
919 {
920 static const FormatSet formatSet = buildES2ValidFormatSet();
921 return formatSet.find(format) != formatSet.end();
922 }
923 else if (clientVersion == 3)
924 {
925 static const FormatSet formatSet = buildES3ValidFormatSet();
926 return formatSet.find(format) != formatSet.end();
927 }
928 else
929 {
930 UNREACHABLE();
931 return false;
932 }
933}
934
935bool IsValidType(GLenum type, GLuint clientVersion)
936{
937 if (clientVersion == 2)
938 {
939 static const TypeSet typeSet = buildES2ValidTypeSet();
940 return typeSet.find(type) != typeSet.end();
941 }
942 else if (clientVersion == 3)
943 {
944 static const TypeSet typeSet = buildES3ValidTypeSet();
945 return typeSet.find(type) != typeSet.end();
946 }
947 else
948 {
949 UNREACHABLE();
950 return false;
951 }
952}
953
954bool IsValidFormatCombination(GLint internalFormat, GLenum format, GLenum type, GLuint clientVersion)
955{
956 if (clientVersion == 2)
957 {
958 static const FormatMap &formats = getES2FormatMap();
959 FormatMap::const_iterator iter = formats.find(FormatTypePair(format, type));
960
961 return (iter != formats.end()) && ((internalFormat == (GLint)type) || (internalFormat == iter->second));
962 }
963 else if (clientVersion == 3)
964 {
965 static const ES3FormatSet &formats = getES3FormatSet();
966 return formats.find(FormatInfo(internalFormat, format, type)) != formats.end();
967 }
968 else
969 {
970 UNREACHABLE();
971 return false;
972 }
973}
974
975bool IsValidCopyTexImageCombination(GLenum textureFormat, GLenum frameBufferFormat, GLuint clientVersion)
976{
977 if (clientVersion == 2)
978 {
979 UNIMPLEMENTED();
980 return false;
981 }
982 else if (clientVersion == 3)
983 {
984 static const CopyConversionSet conversionSet = buildValidES3CopyTexImageCombinations();
985 return conversionSet.find(CopyConversion(textureFormat, frameBufferFormat)) != conversionSet.end();
986 }
987 else
988 {
989 UNREACHABLE();
990 return false;
991 }
992}
993
994bool IsSizedInternalFormat(GLint internalFormat, GLuint clientVersion)
995{
996 InternalFormatInfo internalFormatInfo;
997 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
998 {
999 return internalFormatInfo.mPixelBits > 0;
1000 }
1001 else
1002 {
1003 UNREACHABLE();
1004 return false;
1005 }
1006}
1007
1008GLint GetSizedInternalFormat(GLenum format, GLenum type, GLuint clientVersion)
1009{
1010 if (clientVersion == 2)
1011 {
1012 static const FormatMap &formats = getES2FormatMap();
1013 FormatMap::const_iterator iter = formats.find(FormatTypePair(format, type));
1014 return (iter != formats.end()) ? iter->second : GL_NONE;
1015 }
1016 else if (clientVersion == 3)
1017 {
1018 static const FormatMap formats = buildES3FormatMap();
1019 FormatMap::const_iterator iter = formats.find(FormatTypePair(format, type));
1020 return (iter != formats.end()) ? iter->second : GL_NONE;
1021 }
1022 else
1023 {
1024 UNREACHABLE();
1025 return GL_NONE;
1026 }
1027}
1028
1029GLuint GetPixelBytes(GLint internalFormat, GLuint clientVersion)
1030{
1031 InternalFormatInfo internalFormatInfo;
1032 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1033 {
1034 return internalFormatInfo.mPixelBits / 8;
1035 }
1036 else
1037 {
1038 UNREACHABLE();
1039 return 0;
1040 }
1041}
1042
1043GLuint GetAlphaBits(GLint internalFormat, GLuint clientVersion)
1044{
1045 InternalFormatInfo internalFormatInfo;
1046 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1047 {
1048 return internalFormatInfo.mAlphaBits;
1049 }
1050 else
1051 {
1052 UNREACHABLE();
1053 return 0;
1054 }
1055}
1056
1057GLuint GetRedBits(GLint internalFormat, GLuint clientVersion)
1058{
1059 InternalFormatInfo internalFormatInfo;
1060 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1061 {
1062 return internalFormatInfo.mRedBits;
1063 }
1064 else
1065 {
1066 UNREACHABLE();
1067 return 0;
1068 }
1069}
1070
1071GLuint GetGreenBits(GLint internalFormat, GLuint clientVersion)
1072{
1073 InternalFormatInfo internalFormatInfo;
1074 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1075 {
1076 return internalFormatInfo.mGreenBits;
1077 }
1078 else
1079 {
1080 UNREACHABLE();
1081 return 0;
1082 }
1083}
1084
1085GLuint GetBlueBits(GLint internalFormat, GLuint clientVersion)
1086{
1087 InternalFormatInfo internalFormatInfo;
1088 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1089 {
1090 return internalFormatInfo.mGreenBits;
1091 }
1092 else
1093 {
1094 UNREACHABLE();
1095 return 0;
1096 }
1097}
1098
1099GLuint GetLuminanceBits(GLint internalFormat, GLuint clientVersion)
1100{
1101 InternalFormatInfo internalFormatInfo;
1102 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1103 {
1104 return internalFormatInfo.mLuminanceBits;
1105 }
1106 else
1107 {
1108 UNREACHABLE();
1109 return 0;
1110 }
1111}
1112
1113GLuint GetDepthBits(GLint internalFormat, GLuint clientVersion)
1114{
1115 InternalFormatInfo internalFormatInfo;
1116 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1117 {
1118 return internalFormatInfo.mDepthBits;
1119 }
1120 else
1121 {
1122 UNREACHABLE();
1123 return 0;
1124 }
1125}
1126
1127GLuint GetStencilBits(GLint internalFormat, GLuint clientVersion)
1128{
1129 InternalFormatInfo internalFormatInfo;
1130 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1131 {
1132 return internalFormatInfo.mStencilBits;
1133 }
1134 else
1135 {
1136 UNREACHABLE();
1137 return 0;
1138 }
1139}
1140
1141GLenum GetFormat(GLint internalFormat, GLuint clientVersion)
1142{
1143 InternalFormatInfo internalFormatInfo;
1144 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1145 {
1146 return internalFormatInfo.mFormat;
1147 }
1148 else
1149 {
1150 UNREACHABLE();
1151 return GL_NONE;
1152 }
1153}
1154
1155GLenum GetType(GLint internalFormat, GLuint clientVersion)
1156{
1157 InternalFormatInfo internalFormatInfo;
1158 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1159 {
1160 return internalFormatInfo.mType;
1161 }
1162 else
1163 {
1164 UNREACHABLE();
1165 return GL_NONE;
1166 }
1167}
1168
1169bool IsColorRenderingSupported(GLint internalFormat, const rx::Renderer *renderer)
1170{
1171 InternalFormatInfo internalFormatInfo;
1172 if (renderer && getInternalFormatInfo(internalFormat, renderer->getCurrentClientVersion(), &internalFormatInfo))
1173 {
1174 return internalFormatInfo.mIsColorRenderable(NULL, renderer);
1175 }
1176 else
1177 {
1178 UNREACHABLE();
1179 return false;
1180 }
1181}
1182
1183bool IsColorRenderingSupported(GLint internalFormat, const Context *context)
1184{
1185 InternalFormatInfo internalFormatInfo;
1186 if (context && getInternalFormatInfo(internalFormat, context->getClientVersion(), &internalFormatInfo))
1187 {
1188 return internalFormatInfo.mIsColorRenderable(context, NULL);
1189 }
1190 else
1191 {
1192 UNREACHABLE();
1193 return false;
1194 }
1195}
1196
1197bool IsTextureFilteringSupported(GLint internalFormat, const rx::Renderer *renderer)
1198{
1199 InternalFormatInfo internalFormatInfo;
1200 if (renderer && getInternalFormatInfo(internalFormat, renderer->getCurrentClientVersion(), &internalFormatInfo))
1201 {
1202 return internalFormatInfo.mIsTextureFilterable(NULL, renderer);
1203 }
1204 else
1205 {
1206 UNREACHABLE();
1207 return false;
1208 }
1209}
1210
1211bool IsTextureFilteringSupported(GLint internalFormat, const Context *context)
1212{
1213 InternalFormatInfo internalFormatInfo;
1214 if (context && getInternalFormatInfo(internalFormat, context->getClientVersion(), &internalFormatInfo))
1215 {
1216 return internalFormatInfo.mIsTextureFilterable(context, NULL);
1217 }
1218 else
1219 {
1220 UNREACHABLE();
1221 return false;
1222 }
1223}
1224
1225bool IsDepthRenderingSupported(GLint internalFormat, const rx::Renderer *renderer)
1226{
1227 InternalFormatInfo internalFormatInfo;
1228 if (renderer && getInternalFormatInfo(internalFormat, renderer->getCurrentClientVersion(), &internalFormatInfo))
1229 {
1230 return internalFormatInfo.mIsDepthRenderable(NULL, renderer);
1231 }
1232 else
1233 {
1234 UNREACHABLE();
1235 return false;
1236 }
1237}
1238
1239bool IsDepthRenderingSupported(GLint internalFormat, const Context *context)
1240{
1241 InternalFormatInfo internalFormatInfo;
1242 if (context && getInternalFormatInfo(internalFormat, context->getClientVersion(), &internalFormatInfo))
1243 {
1244 return internalFormatInfo.mIsDepthRenderable(context, NULL);
1245 }
1246 else
1247 {
1248 UNREACHABLE();
1249 return false;
1250 }
1251}
1252
1253bool IsStencilRenderingSupported(GLint internalFormat, const rx::Renderer *renderer)
1254{
1255 InternalFormatInfo internalFormatInfo;
1256 if (renderer && getInternalFormatInfo(internalFormat, renderer->getCurrentClientVersion(), &internalFormatInfo))
1257 {
1258 return internalFormatInfo.mIsStencilRenderable(NULL, renderer);
1259 }
1260 else
1261 {
1262 UNREACHABLE();
1263 return false;
1264 }
1265}
1266
1267bool IsStencilRenderingSupported(GLint internalFormat, const Context *context)
1268{
1269 InternalFormatInfo internalFormatInfo;
1270 if (context && getInternalFormatInfo(internalFormat, context->getClientVersion(), &internalFormatInfo))
1271 {
1272 return internalFormatInfo.mIsStencilRenderable(context, NULL);
1273 }
1274 else
1275 {
1276 UNREACHABLE();
1277 return false;
1278 }
1279}
1280
1281GLuint GetRowPitch(GLint internalFormat, GLenum type, GLuint clientVersion, GLsizei width, GLint alignment)
1282{
1283 ASSERT(alignment > 0 && isPow2(alignment));
1284 return (GetBlockSize(internalFormat, type, clientVersion, width, 1) + alignment - 1) & ~(alignment - 1);
1285}
1286
1287GLuint GetDepthPitch(GLint internalFormat, GLenum type, GLuint clientVersion, GLsizei width, GLsizei height, GLint alignment)
1288{
1289 return (GetBlockSize(internalFormat, type, clientVersion, width, height) + alignment - 1) & ~(alignment - 1);
1290}
1291
1292GLuint GetBlockSize(GLint internalFormat, GLenum type, GLuint clientVersion, GLsizei width, GLsizei height)
1293{
1294 InternalFormatInfo internalFormatInfo;
1295 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1296 {
1297 if (internalFormatInfo.mIsCompressed)
1298 {
1299 GLsizei numBlocksWide = (width + internalFormatInfo.mCompressedBlockWidth - 1) / internalFormatInfo.mCompressedBlockWidth;
1300 GLsizei numBlocksHight = (height + internalFormatInfo.mCompressedBlockHeight - 1) / internalFormatInfo.mCompressedBlockHeight;
1301
1302 return (internalFormatInfo.mPixelBits * numBlocksWide * numBlocksHight) / 8;
1303 }
1304 else
1305 {
1306 TypeInfo typeInfo;
1307 if (getTypeInfo(type, &typeInfo))
1308 {
1309 if (typeInfo.mSpecialInterpretation)
1310 {
1311 return typeInfo.mTypeBytes * width * height;
1312 }
1313 else
1314 {
1315 return internalFormatInfo.mComponentCount * typeInfo.mTypeBytes * width * height;
1316 }
1317 }
1318 else
1319 {
1320 UNREACHABLE();
1321 return 0;
1322 }
1323 }
1324 }
1325 else
1326 {
1327 UNREACHABLE();
1328 return 0;
1329 }
1330}
1331
1332bool IsFormatCompressed(GLint internalFormat, GLuint clientVersion)
1333{
1334 InternalFormatInfo internalFormatInfo;
1335 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1336 {
1337 return internalFormatInfo.mIsCompressed;
1338 }
1339 else
1340 {
1341 UNREACHABLE();
1342 return false;
1343 }
1344}
1345
1346GLuint GetCompressedBlockWidth(GLint internalFormat, GLuint clientVersion)
1347{
1348 InternalFormatInfo internalFormatInfo;
1349 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1350 {
1351 return internalFormatInfo.mCompressedBlockWidth;
1352 }
1353 else
1354 {
1355 UNREACHABLE();
1356 return 0;
1357 }
1358}
1359
1360GLuint GetCompressedBlockHeight(GLint internalFormat, GLuint clientVersion)
1361{
1362 InternalFormatInfo internalFormatInfo;
1363 if (getInternalFormatInfo(internalFormat, clientVersion, &internalFormatInfo))
1364 {
1365 return internalFormatInfo.mCompressedBlockHeight;
1366 }
1367 else
1368 {
1369 UNREACHABLE();
1370 return 0;
1371 }
1372}
1373
1374}