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gerrit-public.fairphone.software / platform / external / skia / ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976e / . / gpu / src / mesa / GrGLDefaultInterface_mesa.cpp
blob: e03c44e595437f61327f13917b4269aa23f40485 [file] [log] [blame]
epoger@google.comec3ed6a2011-07-28 14:26:00 +0000[diff] [blame^]1
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]2/*
epoger@google.comec3ed6a2011-07-28 14:26:00 +0000[diff] [blame^]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.
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]7 */
8
epoger@google.comec3ed6a2011-07-28 14:26:00 +0000[diff] [blame^]9
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]10#include "GrGLInterface.h"
11
12#include "GL/osmesa.h"
13#include <GL/glext.h>
14#include <GL/glu.h>
15
16#define GR_GL_GET_PROC(F) gDefaultInterface.f ## F = (GrGL ## F ## Proc) \
17 OSMesaGetProcAddress("gl" #F);
18#define GR_GL_GET_PROC_SUFFIX(F, S) gDefaultInterface.f ## F = (GrGL ## F ## Proc) \
19 OSMesaGetProcAddress("gl" #F #S);
20
21void GrGLSetDefaultGLInterface() {
22 static GrGLInterface gDefaultInterface;
23 static bool gDefaultInterfaceInit;
24 if (!gDefaultInterfaceInit && NULL != OSMesaGetCurrentContext()) {
25 int major, minor;
26 const char* versionString = (const char*) glGetString(GL_VERSION);
27 const char* extString = (const char*) glGetString(GL_EXTENSIONS);
28 gl_version_from_string(&major, &minor, versionString);
29
30 if (major == 1 && minor < 5) {
31 // We must have array and element_array buffer objects.
32 return;
33 }
tomhudson@google.come67bd3f2011-06-16 14:08:04 +0000[diff] [blame]34 gDefaultInterface.fNPOTRenderTargetSupport = kProbe_GrGLCapability;
35 gDefaultInterface.fMinRenderTargetHeight = kProbe_GrGLCapability;
36 gDefaultInterface.fMinRenderTargetWidth = kProbe_GrGLCapability;
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]37
38 gDefaultInterface.fActiveTexture = glActiveTexture;
39 GR_GL_GET_PROC(AttachShader);
40 GR_GL_GET_PROC(BindAttribLocation);
41 GR_GL_GET_PROC(BindBuffer);
42 gDefaultInterface.fBindTexture = glBindTexture;
43 gDefaultInterface.fBlendColor = glBlendColor;
44 gDefaultInterface.fBlendFunc = glBlendFunc;
45 GR_GL_GET_PROC(BufferData);
46 GR_GL_GET_PROC(BufferSubData);
47 gDefaultInterface.fClear = glClear;
48 gDefaultInterface.fClearColor = glClearColor;
49 gDefaultInterface.fClearStencil = glClearStencil;
50 gDefaultInterface.fClientActiveTexture = glClientActiveTexture;
51 gDefaultInterface.fColorMask = glColorMask;
52 gDefaultInterface.fColorPointer = glColorPointer;
53 gDefaultInterface.fColor4ub = glColor4ub;
54 GR_GL_GET_PROC(CompileShader);
55 gDefaultInterface.fCompressedTexImage2D = glCompressedTexImage2D;
56 GR_GL_GET_PROC(CreateProgram);
57 GR_GL_GET_PROC(CreateShader);
58 gDefaultInterface.fCullFace = glCullFace;
59 GR_GL_GET_PROC(DeleteBuffers);
60 GR_GL_GET_PROC(DeleteProgram);
61 GR_GL_GET_PROC(DeleteShader);
62 gDefaultInterface.fDeleteTextures = glDeleteTextures;
63 gDefaultInterface.fDepthMask = glDepthMask;
64 gDefaultInterface.fDisable = glDisable;
65 gDefaultInterface.fDisableClientState = glDisableClientState;
66 GR_GL_GET_PROC(DisableVertexAttribArray);
67 gDefaultInterface.fDrawArrays = glDrawArrays;
68 gDefaultInterface.fDrawElements = glDrawElements;
69 gDefaultInterface.fEnable = glEnable;
70 gDefaultInterface.fEnableClientState = glEnableClientState;
71 GR_GL_GET_PROC(EnableVertexAttribArray);
72 gDefaultInterface.fFrontFace = glFrontFace;
73 GR_GL_GET_PROC(GenBuffers);
74 GR_GL_GET_PROC(GetBufferParameteriv);
75 gDefaultInterface.fGetError = glGetError;
76 gDefaultInterface.fGetIntegerv = glGetIntegerv;
77 GR_GL_GET_PROC(GetProgramInfoLog);
78 GR_GL_GET_PROC(GetProgramiv);
79 GR_GL_GET_PROC(GetShaderInfoLog);
80 GR_GL_GET_PROC(GetShaderiv);
81 gDefaultInterface.fGetString = glGetString;
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame]82 gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]83 gDefaultInterface.fGenTextures = glGenTextures;
84 GR_GL_GET_PROC(GetUniformLocation);
85 gDefaultInterface.fLineWidth = glLineWidth;
86 GR_GL_GET_PROC(LinkProgram);
87 gDefaultInterface.fLoadMatrixf = glLoadMatrixf;
88 GR_GL_GET_PROC(MapBuffer);
89 gDefaultInterface.fMatrixMode = glMatrixMode;
90 gDefaultInterface.fPointSize = glPointSize;
91 gDefaultInterface.fPixelStorei = glPixelStorei;
92 gDefaultInterface.fReadPixels = glReadPixels;
93 gDefaultInterface.fScissor = glScissor;
94 gDefaultInterface.fShadeModel = glShadeModel;
95 GR_GL_GET_PROC(ShaderSource);
96 gDefaultInterface.fStencilFunc = glStencilFunc;
97 GR_GL_GET_PROC(StencilFuncSeparate);
98 gDefaultInterface.fStencilMask = glStencilMask;
99 GR_GL_GET_PROC(StencilMaskSeparate);
100 gDefaultInterface.fStencilOp = glStencilOp;
101 GR_GL_GET_PROC(StencilOpSeparate);
102 gDefaultInterface.fTexCoordPointer = glTexCoordPointer;
103 gDefaultInterface.fTexEnvi = glTexEnvi;
104 //OSMesa on Mac's glTexImage2D takes a GLenum for internalFormat rather than a GLint.
105 gDefaultInterface.fTexImage2D = reinterpret_cast<GrGLTexImage2DProc>(glTexImage2D);
106 gDefaultInterface.fTexParameteri = glTexParameteri;
107 gDefaultInterface.fTexSubImage2D = glTexSubImage2D;
108 GR_GL_GET_PROC(Uniform1f);
109 GR_GL_GET_PROC(Uniform1i);
110 GR_GL_GET_PROC(Uniform1fv);
111 GR_GL_GET_PROC(Uniform1iv);
112 GR_GL_GET_PROC(Uniform2f);
113 GR_GL_GET_PROC(Uniform2i);
114 GR_GL_GET_PROC(Uniform2fv);
115 GR_GL_GET_PROC(Uniform2iv);
116 GR_GL_GET_PROC(Uniform3f);
117 GR_GL_GET_PROC(Uniform3i);
118 GR_GL_GET_PROC(Uniform3fv);
119 GR_GL_GET_PROC(Uniform3iv);
120 GR_GL_GET_PROC(Uniform4f);
121 GR_GL_GET_PROC(Uniform4i);
122 GR_GL_GET_PROC(Uniform4fv);
123 GR_GL_GET_PROC(Uniform4iv);
124 GR_GL_GET_PROC(UniformMatrix2fv);
125 GR_GL_GET_PROC(UniformMatrix3fv);
126 GR_GL_GET_PROC(UniformMatrix4fv);
127 GR_GL_GET_PROC(UnmapBuffer);
128 GR_GL_GET_PROC(UseProgram);
129 GR_GL_GET_PROC(VertexAttrib4fv);
130 GR_GL_GET_PROC(VertexAttribPointer);
131 gDefaultInterface.fVertexPointer = glVertexPointer;
132 gDefaultInterface.fViewport = glViewport;
133
134 // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since
135 // GL_ARB_framebuffer_object doesn't use ARB suffix.)
136 if (major >= 3 || has_gl_extension_from_string(
137 "GL_ARB_framebuffer_object", extString)) {
138 GR_GL_GET_PROC(GenFramebuffers);
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame]139 GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
140 GR_GL_GET_PROC(GetRenderbufferParameteriv);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]141 GR_GL_GET_PROC(BindFramebuffer);
142 GR_GL_GET_PROC(FramebufferTexture2D);
143 GR_GL_GET_PROC(CheckFramebufferStatus);
144 GR_GL_GET_PROC(DeleteFramebuffers);
145 GR_GL_GET_PROC(RenderbufferStorage);
146 GR_GL_GET_PROC(GenRenderbuffers);
147 GR_GL_GET_PROC(DeleteRenderbuffers);
148 GR_GL_GET_PROC(FramebufferRenderbuffer);
149 GR_GL_GET_PROC(BindRenderbuffer);
150 GR_GL_GET_PROC(RenderbufferStorageMultisample);
151 GR_GL_GET_PROC(BlitFramebuffer);
152 } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object",
153 extString)) {
154 GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame]155 GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
156 GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]157 GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
158 GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
159 GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
160 GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
161 GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT);
162 GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT);
163 GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
164 GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
165 GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT);
166 if (has_gl_extension_from_string("GL_EXT_framebuffer_multisample",
167 extString)) {
168 GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
169 }
170 if (has_gl_extension_from_string("GL_EXT_framebuffer_blit",
171 extString)) {
172 GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT);
173 }
174 } else {
175 // we must have FBOs
176 return;
177 }
bsalomon@google.com271cffc2011-05-20 14:13:56 +0000[diff] [blame]178 GR_GL_GET_PROC(BindFragDataLocationIndexed);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]179 gDefaultInterface.fBindingsExported = kDesktop_GrGLBinding;
180
181 gDefaultInterfaceInit = true;
182 }
183 if (gDefaultInterfaceInit)
184 GrGLSetGLInterface(&gDefaultInterface);
185}