Gitiles
Code Review Sign In
review.blissroms.org / platform_external_skia / dd182cbca60a7f0003330c01dfc64f69f56aea90 / . / src / gpu / gl / GrGLCreateNullInterface.cpp
blob: cdac75f553d47980290497262dc7affec6638304 [file] [log] [blame]
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#include "GrGLInterface.h"
tomhudson@google.comdd182cb2012-02-10 21:01:00 +0000[diff] [blame^]11#include "../GrTDArray.h"
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]12
13GrGLvoid GR_GL_FUNCTION_TYPE nullGLActiveTexture(GrGLenum texture) {}
14GrGLvoid GR_GL_FUNCTION_TYPE nullGLAttachShader(GrGLuint program, GrGLuint shader) {}
15GrGLvoid GR_GL_FUNCTION_TYPE nullGLBeginQuery(GrGLenum target, GrGLuint id) {}
16GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindAttribLocation(GrGLuint program, GrGLuint index, const char* name) {}
17GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindTexture(GrGLenum target, GrGLuint texture) {}
18GrGLvoid GR_GL_FUNCTION_TYPE nullGLBlendColor(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha) {}
19GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindFragDataLocation(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name) {}
20GrGLvoid GR_GL_FUNCTION_TYPE nullGLBlendFunc(GrGLenum sfactor, GrGLenum dfactor) {}
21GrGLvoid GR_GL_FUNCTION_TYPE nullGLBufferData(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage) {}
22GrGLvoid GR_GL_FUNCTION_TYPE nullGLBufferSubData(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data) {}
23GrGLvoid GR_GL_FUNCTION_TYPE nullGLClear(GrGLbitfield mask) {}
24GrGLvoid GR_GL_FUNCTION_TYPE nullGLClearColor(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha) {}
25GrGLvoid GR_GL_FUNCTION_TYPE nullGLClearStencil(GrGLint s) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]26GrGLvoid GR_GL_FUNCTION_TYPE nullGLColorMask(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]27GrGLvoid GR_GL_FUNCTION_TYPE nullGLCompileShader(GrGLuint shader) {}
28GrGLvoid GR_GL_FUNCTION_TYPE nullGLCompressedTexImage2D(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data) {}
29GrGLvoid GR_GL_FUNCTION_TYPE nullGLCullFace(GrGLenum mode) {}
30GrGLvoid GR_GL_FUNCTION_TYPE nullGLDepthMask(GrGLboolean flag) {}
31GrGLvoid GR_GL_FUNCTION_TYPE nullGLDisable(GrGLenum cap) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]32GrGLvoid GR_GL_FUNCTION_TYPE nullGLDisableVertexAttribArray(GrGLuint index) {}
33GrGLvoid GR_GL_FUNCTION_TYPE nullGLDrawArrays(GrGLenum mode, GrGLint first, GrGLsizei count) {}
34GrGLvoid GR_GL_FUNCTION_TYPE nullGLDrawBuffer(GrGLenum mode) {}
35GrGLvoid GR_GL_FUNCTION_TYPE nullGLDrawBuffers(GrGLsizei n, const GrGLenum* bufs) {}
36GrGLvoid GR_GL_FUNCTION_TYPE nullGLDrawElements(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices) {}
37GrGLvoid GR_GL_FUNCTION_TYPE nullGLEnable(GrGLenum cap) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]38GrGLvoid GR_GL_FUNCTION_TYPE nullGLEnableVertexAttribArray(GrGLuint index) {}
39GrGLvoid GR_GL_FUNCTION_TYPE nullGLEndQuery(GrGLenum target) {}
40GrGLvoid GR_GL_FUNCTION_TYPE nullGLFinish() {}
41GrGLvoid GR_GL_FUNCTION_TYPE nullGLFlush() {}
42GrGLvoid GR_GL_FUNCTION_TYPE nullGLFrontFace(GrGLenum mode) {}
43GrGLvoid GR_GL_FUNCTION_TYPE nullGLLineWidth(GrGLfloat width) {}
44GrGLvoid GR_GL_FUNCTION_TYPE nullGLLinkProgram(GrGLuint program) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]45GrGLvoid GR_GL_FUNCTION_TYPE nullGLPixelStorei(GrGLenum pname, GrGLint param) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]46GrGLvoid GR_GL_FUNCTION_TYPE nullGLQueryCounter(GrGLuint id, GrGLenum target) {}
47GrGLvoid GR_GL_FUNCTION_TYPE nullGLReadBuffer(GrGLenum src) {}
48GrGLvoid GR_GL_FUNCTION_TYPE nullGLReadPixels(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels) {}
49GrGLvoid GR_GL_FUNCTION_TYPE nullGLScissor(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]50GrGLvoid GR_GL_FUNCTION_TYPE nullGLShaderSource(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length) {}
51GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilFunc(GrGLenum func, GrGLint ref, GrGLuint mask) {}
52GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilFuncSeparate(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask) {}
53GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilMask(GrGLuint mask) {}
54GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilMaskSeparate(GrGLenum face, GrGLuint mask) {}
55GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilOp(GrGLenum fail, GrGLenum zfail, GrGLenum zpass) {}
56GrGLvoid GR_GL_FUNCTION_TYPE nullGLStencilOpSeparate(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]57GrGLvoid GR_GL_FUNCTION_TYPE nullGLTexImage2D(GrGLenum target, GrGLint level, GrGLint internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid* pixels) {}
58GrGLvoid GR_GL_FUNCTION_TYPE nullGLTexParameteri(GrGLenum target, GrGLenum pname, GrGLint param) {}
bsalomon@google.com280e99f2012-01-05 16:17:38 +0000[diff] [blame]59GrGLvoid GR_GL_FUNCTION_TYPE nullGLTexStorage2D(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]60GrGLvoid GR_GL_FUNCTION_TYPE nullGLTexSubImage2D(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, const GrGLvoid* pixels) {}
61GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform1f(GrGLint location, GrGLfloat v0) {}
62GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform1i(GrGLint location, GrGLint v0) {}
63GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform1fv(GrGLint location, GrGLsizei count, const GrGLfloat* v) {}
64GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform1iv(GrGLint location, GrGLsizei count, const GrGLint* v) {}
65GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform2f(GrGLint location, GrGLfloat v0, GrGLfloat v1) {}
66GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform2i(GrGLint location, GrGLint v0, GrGLint v1) {}
67GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform2fv(GrGLint location, GrGLsizei count, const GrGLfloat* v) {}
68GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform2iv(GrGLint location, GrGLsizei count, const GrGLint* v) {}
69GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform3f(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2) {}
70GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform3i(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2) {}
71GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform3fv(GrGLint location, GrGLsizei count, const GrGLfloat* v) {}
72GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform3iv(GrGLint location, GrGLsizei count, const GrGLint* v) {}
73GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform4f(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3) {}
74GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform4i(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3) {}
75GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform4fv(GrGLint location, GrGLsizei count, const GrGLfloat* v) {}
76GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniform4iv(GrGLint location, GrGLsizei count, const GrGLint* v) {}
77GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniformMatrix2fv(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value) {}
78GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniformMatrix3fv(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value) {}
79GrGLvoid GR_GL_FUNCTION_TYPE nullGLUniformMatrix4fv(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value) {}
80GrGLvoid GR_GL_FUNCTION_TYPE nullGLUseProgram(GrGLuint program) {}
81GrGLvoid GR_GL_FUNCTION_TYPE nullGLVertexAttrib4fv(GrGLuint indx, const GrGLfloat* values) {}
82GrGLvoid GR_GL_FUNCTION_TYPE nullGLVertexAttribPointer(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr) {}
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]83GrGLvoid GR_GL_FUNCTION_TYPE nullGLViewport(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height) {}
84GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindFramebuffer(GrGLenum target, GrGLuint framebuffer) {}
85GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindRenderbuffer(GrGLenum target, GrGLuint renderbuffer) {}
86GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteFramebuffers(GrGLsizei n, const GrGLuint *framebuffers) {}
87GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteRenderbuffers(GrGLsizei n, const GrGLuint *renderbuffers) {}
88GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferRenderbuffer(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer) {}
89GrGLvoid GR_GL_FUNCTION_TYPE nullGLFramebufferTexture2D(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level) {}
90GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetFramebufferAttachmentParameteriv(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params) {}
91GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetRenderbufferParameteriv(GrGLenum target, GrGLenum pname, GrGLint* params) {}
92GrGLvoid GR_GL_FUNCTION_TYPE nullGLRenderbufferStorage(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height) {}
93GrGLvoid GR_GL_FUNCTION_TYPE nullGLRenderbufferStorageMultisample(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height) {}
94GrGLvoid GR_GL_FUNCTION_TYPE nullGLBlitFramebuffer(GrGLint srcX0, GrGLint srcY0, GrGLint srcX1, GrGLint srcY1, GrGLint dstX0, GrGLint dstY0, GrGLint dstX1, GrGLint dstY1, GrGLbitfield mask, GrGLenum filter) {}
95GrGLvoid GR_GL_FUNCTION_TYPE nullGLResolveMultisampleFramebuffer() {}
96GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindFragDataLocationIndexed(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name) {}
97
98GrGLenum GR_GL_FUNCTION_TYPE nullGLCheckFramebufferStatus(GrGLenum target) {
99 return GR_GL_FRAMEBUFFER_COMPLETE;
100}
101
102GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateProgram() {
103 static int gCurrID = 0;
104 return ++gCurrID;
105}
106
107GrGLuint GR_GL_FUNCTION_TYPE nullGLCreateShader(GrGLenum type) {
108 static int gCurrID = 0;
109 return ++gCurrID;
110}
111
112// same delete used for shaders and programs
113GrGLvoid GR_GL_FUNCTION_TYPE nullGLDelete(GrGLuint program) {
114}
115
116// same function used for all glGen*(GLsize i, GLuint*) functions
117GrGLvoid GR_GL_FUNCTION_TYPE nullGLGenIds(GrGLsizei n, GrGLuint* ids) {
118 static int gCurrID = 0;
119 for (int i = 0; i < n; ++i) {
120 ids[i] = ++gCurrID;
121 }
122}
123// same delete function for all glDelete*(GLsize i, const GLuint*) except buffers
124GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteIds(GrGLsizei n, const GrGLuint* ids) {}
125
126// In debug builds we do asserts that ensure we agree with GL about when a buffer
127// is mapped.
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]128static GrTDArray<GrGLuint> gMappedBuffers;
129static GrGLuint gCurrArrayBuffer;
130static GrGLuint gCurrElementArrayBuffer;
131
132GrGLvoid GR_GL_FUNCTION_TYPE nullGLBindBuffer(GrGLenum target, GrGLuint buffer) {
133 switch (target) {
134 case GR_GL_ARRAY_BUFFER:
135 gCurrArrayBuffer = buffer;
136 break;
137 case GR_GL_ELEMENT_ARRAY_BUFFER:
138 gCurrElementArrayBuffer = buffer;
139 break;
140 }
141}
142
143// deleting a bound buffer has the side effect of binding 0
144GrGLvoid GR_GL_FUNCTION_TYPE nullGLDeleteBuffers(GrGLsizei n, const GrGLuint* ids) {
145 for (int i = 0; i < n; ++i) {
146 if (ids[i] == gCurrArrayBuffer) {
147 gCurrArrayBuffer = 0;
148 }
149 if (ids[i] == gCurrElementArrayBuffer) {
150 gCurrElementArrayBuffer = 0;
151 }
152 for (int j = 0; j < gMappedBuffers.count(); ++j) {
153 if (gMappedBuffers[j] == ids[i]) {
154 gMappedBuffers.remove(j);
155 // don't break b/c we didn't check for dupes on insert
156 --j;
157 }
158 }
159 }
160}
161
162GrGLvoid* GR_GL_FUNCTION_TYPE nullGLMapBuffer(GrGLenum target, GrGLenum access) {
163 // We just reserve 32MB of RAM for all locks and hope its big enough
164 static SkAutoMalloc gBufferData(32 * (1 << 20));
165 GrGLuint buf = 0;
166 switch (target) {
167 case GR_GL_ARRAY_BUFFER:
168 buf = gCurrArrayBuffer;
169 break;
170 case GR_GL_ELEMENT_ARRAY_BUFFER:
171 buf = gCurrElementArrayBuffer;
172 break;
173 }
174 if (buf) {
175 *gMappedBuffers.append() = buf;
176 }
177 return gBufferData.get();
178}
179
180GrGLboolean GR_GL_FUNCTION_TYPE nullGLUnmapBuffer(GrGLenum target) {
181 GrGLuint buf = 0;
182 switch (target) {
183 case GR_GL_ARRAY_BUFFER:
184 buf = gCurrArrayBuffer;
185 break;
186 case GR_GL_ELEMENT_ARRAY_BUFFER:
187 buf = gCurrElementArrayBuffer;
188 break;
189 }
190 if (buf) {
191 for (int i = 0; i < gMappedBuffers.count(); ++i) {
192 if (gMappedBuffers[i] == buf) {
193 gMappedBuffers.remove(i);
194 // don't break b/c we didn't check for dupes on insert
195 --i;
196 }
197 }
198 }
199 return GR_GL_TRUE;
200}
201
202GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetBufferParameteriv(GrGLenum target, GrGLenum pname, GrGLint* params) {
203 switch (pname) {
204 case GR_GL_BUFFER_MAPPED: {
205 *params = GR_GL_FALSE;
206 GrGLuint buf = 0;
207 switch (target) {
208 case GR_GL_ARRAY_BUFFER:
209 buf = gCurrArrayBuffer;
210 break;
211 case GR_GL_ELEMENT_ARRAY_BUFFER:
212 buf = gCurrElementArrayBuffer;
213 break;
214 }
215 if (buf) {
216 for (int i = 0; i < gMappedBuffers.count(); ++i) {
217 if (gMappedBuffers[i] == buf) {
218 *params = GR_GL_TRUE;
219 break;
220 }
221 }
222 }
223 break; }
224 default:
225 GrCrash("Unexpected pname to GetBufferParamateriv");
226 break;
227 }
228};
229
230GrGLenum GR_GL_FUNCTION_TYPE nullGLGetError() {
231 return GR_GL_NO_ERROR;
232}
233
234GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetIntegerv(GrGLenum pname, GrGLint* params) {
235 switch (pname) {
236 case GR_GL_STENCIL_BITS:
237 *params = 8;
238 break;
239 case GR_GL_SAMPLES:
240 *params = 1;
241 break;
242 case GR_GL_FRAMEBUFFER_BINDING:
243 *params = 0;
244 break;
245 case GR_GL_VIEWPORT:
246 params[0] = 0;
247 params[1] = 0;
248 params[2] = 800;
249 params[3] = 600;
250 break;
251 case GR_GL_MAX_TEXTURE_IMAGE_UNITS:
252 *params = 8;
253 break;
254 case GR_GL_MAX_FRAGMENT_UNIFORM_VECTORS:
255 *params = 16;
256 break;
257 case GR_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS:
258 *params = 16 * 4;
259 break;
260 case GR_GL_NUM_COMPRESSED_TEXTURE_FORMATS:
261 *params = 0;
262 break;
263 case GR_GL_COMPRESSED_TEXTURE_FORMATS:
264 break;
265 case GR_GL_MAX_TEXTURE_SIZE:
266 *params = 8192;
267 break;
268 case GR_GL_MAX_RENDERBUFFER_SIZE:
269 *params = 8192;
270 break;
271 case GR_GL_MAX_SAMPLES:
272 *params = 32;
273 break;
274 case GR_GL_MAX_VERTEX_ATTRIBS:
275 *params = 16;
276 break;
277 case GR_GL_MAX_TEXTURE_UNITS:
278 *params = 8;
279 break;
280 default:
281 GrCrash("Unexpected pname to GetIntegerv");
282 }
283}
284// used for both the program and shader info logs
285GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetInfoLog(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog) {
286 if (length) {
287 *length = 0;
288 }
289 if (bufsize > 0) {
290 *infolog = 0;
291 }
292}
293
294// used for both the program and shader params
295GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetShaderOrProgramiv(GrGLuint program, GrGLenum pname, GrGLint* params) {
296 switch (pname) {
297 case GR_GL_LINK_STATUS: // fallthru
298 case GR_GL_COMPILE_STATUS:
299 *params = GR_GL_TRUE;
300 break;
301 case GR_GL_INFO_LOG_LENGTH:
302 *params = 0;
303 break;
304 // we don't expect any other pnames
305 default:
306 GrCrash("Unexpected pname to GetProgramiv");
307 break;
308 }
309}
310
311namespace {
312template <typename T>
313void query_result(GrGLenum GLtarget, GrGLenum pname, T *params) {
314 switch (pname) {
315 case GR_GL_QUERY_RESULT_AVAILABLE:
316 *params = GR_GL_TRUE;
317 break;
318 case GR_GL_QUERY_RESULT:
319 *params = 0;
320 break;
321 default:
322 GrCrash("Unexpected pname passed to GetQueryObject.");
323 break;
324 }
325}
326}
327
328// Queries on the null GL just don't do anything at all. We could potentially make
329// the timers work.
330GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetQueryiv(GrGLenum GLtarget, GrGLenum pname, GrGLint *params) {
331 switch (pname) {
332 case GR_GL_CURRENT_QUERY:
333 *params = 0;
334 break;
335 case GR_GL_QUERY_COUNTER_BITS:
336 *params = 32;
337 break;
338 default:
339 GrCrash("Unexpected pname passed GetQueryiv.");
340 }
341}
342GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetQueryObjecti64v(GrGLuint id, GrGLenum pname, GrGLint64 *params) {
343 query_result(id, pname, params);
344}
345GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetQueryObjectiv(GrGLuint id, GrGLenum pname, GrGLint *params) {
346 query_result(id, pname, params);
347}
348GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetQueryObjectui64v(GrGLuint id, GrGLenum pname, GrGLuint64 *params) {
349 query_result(id, pname, params);
350}
351GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetQueryObjectuiv(GrGLuint id, GrGLenum pname, GrGLuint *params) {
352 query_result(id, pname, params);
353}
354
355const GrGLubyte* GR_GL_FUNCTION_TYPE nullGLGetString(GrGLenum name) {
356 switch (name) {
357 case GR_GL_EXTENSIONS:
358 return (const GrGLubyte*)"GL_ARB_framebuffer_object GL_ARB_blend_func_extended GL_ARB_timer_query GL_ARB_draw_buffers GL_ARB_occlusion_query GL_EXT_blend_color GL_EXT_stencil_wrap";
359 case GR_GL_VERSION:
360 return (const GrGLubyte*)"4.0 Null GL";
361 case GR_GL_SHADING_LANGUAGE_VERSION:
362 return (const GrGLubyte*)"4.20.8 Null GLSL";
363 default:
364 GrCrash("Unexpected name to GetString");
365 return NULL;
366 }
367}
368
369// we used to use this to query stuff about externally created textures, now we just
370// require clients to tell us everything about the texture.
371GrGLvoid GR_GL_FUNCTION_TYPE nullGLGetTexLevelParameteriv(GrGLenum target, GrGLint level, GrGLenum pname, GrGLint* params) {
372 GrCrash("Should never query texture parameters.");
373}
374
375GrGLint GR_GL_FUNCTION_TYPE nullGLGetUniformLocation(GrGLuint program, const char* name) {
376 static int gUniLocation = 0;
377 return ++gUniLocation;
378}
379
380const GrGLInterface* GrGLCreateNullInterface() {
381 // The gl functions are not context-specific so we create one global
382 // interface
383 static SkAutoTUnref<GrGLInterface> glInterface;
384 if (!glInterface.get()) {
385 GrGLInterface* interface = new GrGLInterface;
386 glInterface.reset(interface);
387 interface->fBindingsExported = kDesktop_GrGLBinding;
388 interface->fActiveTexture = nullGLActiveTexture;
389 interface->fAttachShader = nullGLAttachShader;
390 interface->fBeginQuery = nullGLBeginQuery;
391 interface->fBindAttribLocation = nullGLBindAttribLocation;
392 interface->fBindBuffer = nullGLBindBuffer;
393 interface->fBindFragDataLocation = nullGLBindFragDataLocation;
394 interface->fBindTexture = nullGLBindTexture;
395 interface->fBlendColor = nullGLBlendColor;
396 interface->fBlendFunc = nullGLBlendFunc;
397 interface->fBufferData = nullGLBufferData;
398 interface->fBufferSubData = nullGLBufferSubData;
399 interface->fClear = nullGLClear;
400 interface->fClearColor = nullGLClearColor;
401 interface->fClearStencil = nullGLClearStencil;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]402 interface->fColorMask = nullGLColorMask;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]403 interface->fCompileShader = nullGLCompileShader;
404 interface->fCompressedTexImage2D = nullGLCompressedTexImage2D;
405 interface->fCreateProgram = nullGLCreateProgram;
406 interface->fCreateShader = nullGLCreateShader;
407 interface->fCullFace = nullGLCullFace;
408 interface->fDeleteBuffers = nullGLDeleteBuffers;
409 interface->fDeleteProgram = nullGLDelete;
410 interface->fDeleteQueries = nullGLDeleteIds;
411 interface->fDeleteShader = nullGLDelete;
412 interface->fDeleteTextures = nullGLDeleteIds;
413 interface->fDepthMask = nullGLDepthMask;
414 interface->fDisable = nullGLDisable;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]415 interface->fDisableVertexAttribArray = nullGLDisableVertexAttribArray;
416 interface->fDrawArrays = nullGLDrawArrays;
417 interface->fDrawBuffer = nullGLDrawBuffer;
418 interface->fDrawBuffers = nullGLDrawBuffers;
419 interface->fDrawElements = nullGLDrawElements;
420 interface->fEnable = nullGLEnable;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]421 interface->fEnableVertexAttribArray = nullGLEnableVertexAttribArray;
422 interface->fEndQuery = nullGLEndQuery;
423 interface->fFinish = nullGLFinish;
424 interface->fFlush = nullGLFlush;
425 interface->fFrontFace = nullGLFrontFace;
426 interface->fGenBuffers = nullGLGenIds;
427 interface->fGenQueries = nullGLGenIds;
428 interface->fGenTextures = nullGLGenIds;
429 interface->fGetBufferParameteriv = nullGLGetBufferParameteriv;
430 interface->fGetError = nullGLGetError;
431 interface->fGetIntegerv = nullGLGetIntegerv;
432 interface->fGetQueryObjecti64v = nullGLGetQueryObjecti64v;
433 interface->fGetQueryObjectiv = nullGLGetQueryObjectiv;
434 interface->fGetQueryObjectui64v = nullGLGetQueryObjectui64v;
435 interface->fGetQueryObjectuiv = nullGLGetQueryObjectuiv;
436 interface->fGetQueryiv = nullGLGetQueryiv;
437 interface->fGetProgramInfoLog = nullGLGetInfoLog;
438 interface->fGetProgramiv = nullGLGetShaderOrProgramiv;
439 interface->fGetShaderInfoLog = nullGLGetInfoLog;
440 interface->fGetShaderiv = nullGLGetShaderOrProgramiv;
441 interface->fGetString = nullGLGetString;
442 interface->fGetTexLevelParameteriv = nullGLGetTexLevelParameteriv;
443 interface->fGetUniformLocation = nullGLGetUniformLocation;
444 interface->fLineWidth = nullGLLineWidth;
445 interface->fLinkProgram = nullGLLinkProgram;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]446 interface->fPixelStorei = nullGLPixelStorei;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]447 interface->fQueryCounter = nullGLQueryCounter;
448 interface->fReadBuffer = nullGLReadBuffer;
449 interface->fReadPixels = nullGLReadPixels;
450 interface->fScissor = nullGLScissor;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]451 interface->fShaderSource = nullGLShaderSource;
452 interface->fStencilFunc = nullGLStencilFunc;
453 interface->fStencilFuncSeparate = nullGLStencilFuncSeparate;
454 interface->fStencilMask = nullGLStencilMask;
455 interface->fStencilMaskSeparate = nullGLStencilMaskSeparate;
456 interface->fStencilOp = nullGLStencilOp;
457 interface->fStencilOpSeparate = nullGLStencilOpSeparate;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]458 interface->fTexImage2D = nullGLTexImage2D;
459 interface->fTexParameteri = nullGLTexParameteri;
460 interface->fTexSubImage2D = nullGLTexSubImage2D;
bsalomon@google.com280e99f2012-01-05 16:17:38 +0000[diff] [blame]461 interface->fTexStorage2D = nullGLTexStorage2D;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]462 interface->fUniform1f = nullGLUniform1f;
463 interface->fUniform1i = nullGLUniform1i;
464 interface->fUniform1fv = nullGLUniform1fv;
465 interface->fUniform1iv = nullGLUniform1iv;
466 interface->fUniform2f = nullGLUniform2f;
467 interface->fUniform2i = nullGLUniform2i;
468 interface->fUniform2fv = nullGLUniform2fv;
469 interface->fUniform2iv = nullGLUniform2iv;
470 interface->fUniform3f = nullGLUniform3f;
471 interface->fUniform3i = nullGLUniform3i;
472 interface->fUniform3fv = nullGLUniform3fv;
473 interface->fUniform3iv = nullGLUniform3iv;
474 interface->fUniform4f = nullGLUniform4f;
475 interface->fUniform4i = nullGLUniform4i;
476 interface->fUniform4fv = nullGLUniform4fv;
477 interface->fUniform4iv = nullGLUniform4iv;
478 interface->fUniformMatrix2fv = nullGLUniformMatrix2fv;
479 interface->fUniformMatrix3fv = nullGLUniformMatrix3fv;
480 interface->fUniformMatrix4fv = nullGLUniformMatrix4fv;
481 interface->fUseProgram = nullGLUseProgram;
482 interface->fVertexAttrib4fv = nullGLVertexAttrib4fv;
483 interface->fVertexAttribPointer = nullGLVertexAttribPointer;
bsalomon@google.com74913722011-10-27 20:44:19 +0000[diff] [blame]484 interface->fViewport = nullGLViewport;
485 interface->fBindFramebuffer = nullGLBindFramebuffer;
486 interface->fBindRenderbuffer = nullGLBindRenderbuffer;
487 interface->fCheckFramebufferStatus = nullGLCheckFramebufferStatus;
488 interface->fDeleteFramebuffers = nullGLDeleteFramebuffers;
489 interface->fDeleteRenderbuffers = nullGLDeleteRenderbuffers;
490 interface->fFramebufferRenderbuffer = nullGLFramebufferRenderbuffer;
491 interface->fFramebufferTexture2D = nullGLFramebufferTexture2D;
492 interface->fGenFramebuffers = nullGLGenIds;
493 interface->fGenRenderbuffers = nullGLGenIds;
494 interface->fGetFramebufferAttachmentParameteriv = nullGLGetFramebufferAttachmentParameteriv;
495 interface->fGetRenderbufferParameteriv = nullGLGetRenderbufferParameteriv;
496 interface->fRenderbufferStorage = nullGLRenderbufferStorage;
497 interface->fRenderbufferStorageMultisample = nullGLRenderbufferStorageMultisample;
498 interface->fBlitFramebuffer = nullGLBlitFramebuffer;
499 interface->fResolveMultisampleFramebuffer = nullGLResolveMultisampleFramebuffer;
500 interface->fMapBuffer = nullGLMapBuffer;
501 interface->fUnmapBuffer = nullGLUnmapBuffer;
502 interface->fBindFragDataLocationIndexed = nullGLBindFragDataLocationIndexed;
503 }
504 glInterface.get()->ref();
505 return glInterface.get();
506}