1
2/*
3 * Copyright 2014 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 "GrGLAssembleInterface.h"
11#include "GrGLUtil.h"
12
13#define GET_PROC(F) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
14#define GET_PROC_SUFFIX(F, S) functions->f ## F = (GrGL ## F ## Proc) get(ctx, "gl" #F #S)
15#define GET_PROC_LOCAL(F) GrGL ## F ## Proc F = (GrGL ## F ## Proc) get(ctx, "gl" #F)
16
17const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
18    GET_PROC_LOCAL(GetString);
19    GET_PROC_LOCAL(GetStringi);
20    GET_PROC_LOCAL(GetIntegerv);
21
22    // GetStringi may be NULL depending on the GL version.
23    if (NULL == GetString || NULL == GetIntegerv) {
24        return NULL;
25    }
26
27    const char* versionString = (const char*) GetString(GR_GL_VERSION);
28    GrGLVersion glVer = GrGLGetVersionFromString(versionString);
29
30    if (glVer < GR_GL_VER(1,5) || GR_GL_INVALID_VER == glVer) {
31        // We must have array and element_array buffer objects.
32        return NULL;
33    }
34
35    GrGLExtensions extensions;
36    if (!extensions.init(kGL_GrGLStandard, GetString, GetStringi, GetIntegerv)) {
37        return NULL;
38    }
39
40    GrGLInterface* interface = SkNEW(GrGLInterface());
41    GrGLInterface::Functions* functions = &interface->fFunctions;
42
43    GET_PROC(ActiveTexture);
44    GET_PROC(AttachShader);
45    GET_PROC(BindAttribLocation);
46    GET_PROC(BindBuffer);
47    if (glVer >= GR_GL_VER(3,0)) {
48        GET_PROC(BindFragDataLocation);
49    }
50    GET_PROC(BeginQuery);
51    GET_PROC(BindTexture);
52    GET_PROC(BlendFunc);
53
54    if (glVer >= GR_GL_VER(1,4) ||
55        extensions.has("GL_ARB_imaging") ||
56        extensions.has("GL_EXT_blend_color")) {
57        GET_PROC(BlendColor);
58    }
59
60    GET_PROC(BufferData);
61    GET_PROC(BufferSubData);
62    GET_PROC(Clear);
63    GET_PROC(ClearColor);
64    GET_PROC(ClearStencil);
65    GET_PROC(ColorMask);
66    GET_PROC(CompileShader);
67    GET_PROC(CompressedTexImage2D);
68    GET_PROC(CompressedTexSubImage2D);
69    GET_PROC(CopyTexSubImage2D);
70    GET_PROC(CreateProgram);
71    GET_PROC(CreateShader);
72    GET_PROC(CullFace);
73    GET_PROC(DeleteBuffers);
74    GET_PROC(DeleteProgram);
75    GET_PROC(DeleteQueries);
76    GET_PROC(DeleteShader);
77    GET_PROC(DeleteTextures);
78    GET_PROC(DepthMask);
79    GET_PROC(Disable);
80    GET_PROC(DisableVertexAttribArray);
81    GET_PROC(DrawArrays);
82    GET_PROC(DrawBuffer);
83    GET_PROC(DrawBuffers);
84    GET_PROC(DrawElements);
85    GET_PROC(Enable);
86    GET_PROC(EnableVertexAttribArray);
87    GET_PROC(EndQuery);
88    GET_PROC(Finish);
89    GET_PROC(Flush);
90    GET_PROC(FrontFace);
91    GET_PROC(GenBuffers);
92    GET_PROC(GenerateMipmap);
93    GET_PROC(GetBufferParameteriv);
94    GET_PROC(GetError);
95    GET_PROC(GetIntegerv);
96    GET_PROC(GetQueryObjectiv);
97    GET_PROC(GetQueryObjectuiv);
98    if (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) {
99        GET_PROC(GetQueryObjecti64v);
100        GET_PROC(GetQueryObjectui64v);
101        GET_PROC(QueryCounter);
102    } else if (extensions.has("GL_EXT_timer_query")) {
103        GET_PROC_SUFFIX(GetQueryObjecti64v, EXT);
104        GET_PROC_SUFFIX(GetQueryObjectui64v, EXT);
105    }
106    GET_PROC(GetQueryiv);
107    GET_PROC(GetProgramInfoLog);
108    GET_PROC(GetProgramiv);
109    GET_PROC(GetShaderInfoLog);
110    GET_PROC(GetShaderiv);
111    GET_PROC(GetString);
112    GET_PROC(GetStringi);
113    GET_PROC(GetTexLevelParameteriv);
114    GET_PROC(GenQueries);
115    GET_PROC(GenTextures);
116    GET_PROC(GetUniformLocation);
117    GET_PROC(LineWidth);
118    GET_PROC(LinkProgram);
119    GET_PROC(MapBuffer);
120    if (extensions.has("GL_EXT_direct_state_access")) {
121        GET_PROC_SUFFIX(MatrixLoadf, EXT);
122        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
123    }
124    GET_PROC(PixelStorei);
125    GET_PROC(ReadBuffer);
126    GET_PROC(ReadPixels);
127    GET_PROC(Scissor);
128    GET_PROC(ShaderSource);
129    GET_PROC(StencilFunc);
130    GET_PROC(StencilFuncSeparate);
131    GET_PROC(StencilMask);
132    GET_PROC(StencilMaskSeparate);
133    GET_PROC(StencilOp);
134    GET_PROC(StencilOpSeparate);
135    GET_PROC(TexImage2D);
136    GET_PROC(TexParameteri);
137    GET_PROC(TexParameteriv);
138    if (glVer >= GR_GL_VER(4,2) || extensions.has("GL_ARB_texture_storage")) {
139        GET_PROC(TexStorage2D);
140    } else if (extensions.has("GL_EXT_texture_storage")) {
141        GET_PROC_SUFFIX(TexStorage2D, EXT);
142    }
143    GET_PROC(TexSubImage2D);
144    GET_PROC(Uniform1f);
145    GET_PROC(Uniform1i);
146    GET_PROC(Uniform1fv);
147    GET_PROC(Uniform1iv);
148    GET_PROC(Uniform2f);
149    GET_PROC(Uniform2i);
150    GET_PROC(Uniform2fv);
151    GET_PROC(Uniform2iv);
152    GET_PROC(Uniform3f);
153    GET_PROC(Uniform3i);
154    GET_PROC(Uniform3fv);
155    GET_PROC(Uniform3iv);
156    GET_PROC(Uniform4f);
157    GET_PROC(Uniform4i);
158    GET_PROC(Uniform4fv);
159    GET_PROC(Uniform4iv);
160    GET_PROC(UniformMatrix2fv);
161    GET_PROC(UniformMatrix3fv);
162    GET_PROC(UniformMatrix4fv);
163    GET_PROC(UnmapBuffer);
164    GET_PROC(UseProgram);
165    GET_PROC(VertexAttrib4fv);
166    GET_PROC(VertexAttribPointer);
167    GET_PROC(Viewport);
168    GET_PROC(BindFragDataLocationIndexed);
169
170    if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) {
171        // no ARB suffix for GL_ARB_vertex_array_object
172        GET_PROC(BindVertexArray);
173        GET_PROC(GenVertexArrays);
174        GET_PROC(DeleteVertexArrays);
175    }
176
177    if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_map_buffer_range")) {
178        GET_PROC(MapBufferRange);
179        GET_PROC(FlushMappedBufferRange);
180    }
181
182    // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since
183    // GL_ARB_framebuffer_object doesn't use ARB suffix.)
184    if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object")) {
185        GET_PROC(GenFramebuffers);
186        GET_PROC(GetFramebufferAttachmentParameteriv);
187        GET_PROC(GetRenderbufferParameteriv);
188        GET_PROC(BindFramebuffer);
189        GET_PROC(FramebufferTexture2D);
190        GET_PROC(CheckFramebufferStatus);
191        GET_PROC(DeleteFramebuffers);
192        GET_PROC(RenderbufferStorage);
193        GET_PROC(GenRenderbuffers);
194        GET_PROC(DeleteRenderbuffers);
195        GET_PROC(FramebufferRenderbuffer);
196        GET_PROC(BindRenderbuffer);
197        GET_PROC(RenderbufferStorageMultisample);
198        GET_PROC(BlitFramebuffer);
199    } else if (extensions.has("GL_EXT_framebuffer_object")) {
200        GET_PROC_SUFFIX(GenFramebuffers, EXT);
201        GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
202        GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
203        GET_PROC_SUFFIX(BindFramebuffer, EXT);
204        GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
205        GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
206        GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
207        GET_PROC_SUFFIX(RenderbufferStorage, EXT);
208        GET_PROC_SUFFIX(GenRenderbuffers, EXT);
209        GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
210        GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
211        GET_PROC_SUFFIX(BindRenderbuffer, EXT);
212        if (extensions.has("GL_EXT_framebuffer_multisample")) {
213            GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
214        }
215        if (extensions.has("GL_EXT_framebuffer_blit")) {
216            GET_PROC_SUFFIX(BlitFramebuffer, EXT);
217        }
218    } else {
219        // we must have FBOs
220        delete interface;
221        return NULL;
222    }
223
224    if (extensions.has("GL_NV_path_rendering")) {
225        GET_PROC_SUFFIX(PathCommands, NV);
226        GET_PROC_SUFFIX(PathCoords, NV);
227        GET_PROC_SUFFIX(PathSubCommands, NV);
228        GET_PROC_SUFFIX(PathSubCoords, NV);
229        GET_PROC_SUFFIX(PathString, NV);
230        GET_PROC_SUFFIX(PathGlyphs, NV);
231        GET_PROC_SUFFIX(PathGlyphRange, NV);
232        GET_PROC_SUFFIX(WeightPaths, NV);
233        GET_PROC_SUFFIX(CopyPath, NV);
234        GET_PROC_SUFFIX(InterpolatePaths, NV);
235        GET_PROC_SUFFIX(TransformPath, NV);
236        GET_PROC_SUFFIX(PathParameteriv, NV);
237        GET_PROC_SUFFIX(PathParameteri, NV);
238        GET_PROC_SUFFIX(PathParameterfv, NV);
239        GET_PROC_SUFFIX(PathParameterf, NV);
240        GET_PROC_SUFFIX(PathDashArray, NV);
241        GET_PROC_SUFFIX(GenPaths, NV);
242        GET_PROC_SUFFIX(DeletePaths, NV);
243        GET_PROC_SUFFIX(IsPath, NV);
244        GET_PROC_SUFFIX(PathStencilFunc, NV);
245        GET_PROC_SUFFIX(PathStencilDepthOffset, NV);
246        GET_PROC_SUFFIX(StencilFillPath, NV);
247        GET_PROC_SUFFIX(StencilStrokePath, NV);
248        GET_PROC_SUFFIX(StencilFillPathInstanced, NV);
249        GET_PROC_SUFFIX(StencilStrokePathInstanced, NV);
250        GET_PROC_SUFFIX(PathCoverDepthFunc, NV);
251        GET_PROC_SUFFIX(PathColorGen, NV);
252        GET_PROC_SUFFIX(PathTexGen, NV);
253        GET_PROC_SUFFIX(PathFogGen, NV);
254        GET_PROC_SUFFIX(CoverFillPath, NV);
255        GET_PROC_SUFFIX(CoverStrokePath, NV);
256        GET_PROC_SUFFIX(CoverFillPathInstanced, NV);
257        GET_PROC_SUFFIX(CoverStrokePathInstanced, NV);
258        GET_PROC_SUFFIX(GetPathParameteriv, NV);
259        GET_PROC_SUFFIX(GetPathParameterfv, NV);
260        GET_PROC_SUFFIX(GetPathCommands, NV);
261        GET_PROC_SUFFIX(GetPathCoords, NV);
262        GET_PROC_SUFFIX(GetPathDashArray, NV);
263        GET_PROC_SUFFIX(GetPathMetrics, NV);
264        GET_PROC_SUFFIX(GetPathMetricRange, NV);
265        GET_PROC_SUFFIX(GetPathSpacing, NV);
266        GET_PROC_SUFFIX(GetPathColorGeniv, NV);
267        GET_PROC_SUFFIX(GetPathColorGenfv, NV);
268        GET_PROC_SUFFIX(GetPathTexGeniv, NV);
269        GET_PROC_SUFFIX(GetPathTexGenfv, NV);
270        GET_PROC_SUFFIX(IsPointInFillPath, NV);
271        GET_PROC_SUFFIX(IsPointInStrokePath, NV);
272        GET_PROC_SUFFIX(GetPathLength, NV);
273        GET_PROC_SUFFIX(PointAlongPath, NV);
274    }
275
276    if (extensions.has("GL_EXT_debug_marker")) {
277        GET_PROC_SUFFIX(InsertEventMarker, EXT);
278        GET_PROC_SUFFIX(PushGroupMarker, EXT);
279        GET_PROC_SUFFIX(PopGroupMarker, EXT);
280    }
281
282    if (glVer >= GR_GL_VER(4,3) || extensions.has("GL_ARB_invalidate_subdata")) {
283        GET_PROC(InvalidateBufferData);
284        GET_PROC(InvalidateBufferSubData);
285        GET_PROC(InvalidateFramebuffer);
286        GET_PROC(InvalidateSubFramebuffer);
287        GET_PROC(InvalidateTexImage);
288        GET_PROC(InvalidateTexSubImage);
289    }
290
291    interface->fStandard = kGL_GrGLStandard;
292    interface->fExtensions.swap(&extensions);
293
294    return interface;
295}
296