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gerrit-public.fairphone.software / platform / external / skia / cee661af926cc977addc6e039b7022975a448ace / . / gpu / src / mesa / GrGLDefaultInterface_mesa.cpp
blob: a2f70e05e9ace5c365e2c4b556c336b84c5356c1 [file] [log] [blame]
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]1/*
2 Copyright 2011 Google Inc.
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15 */
16
17#include "GrGLInterface.h"
18
19#include "GL/osmesa.h"
20#include <GL/glext.h>
21#include <GL/glu.h>
22
23#define GR_GL_GET_PROC(F) gDefaultInterface.f ## F = (GrGL ## F ## Proc) \
24 OSMesaGetProcAddress("gl" #F);
25#define GR_GL_GET_PROC_SUFFIX(F, S) gDefaultInterface.f ## F = (GrGL ## F ## Proc) \
26 OSMesaGetProcAddress("gl" #F #S);
27
28void GrGLSetDefaultGLInterface() {
29 static GrGLInterface gDefaultInterface;
30 static bool gDefaultInterfaceInit;
31 if (!gDefaultInterfaceInit && NULL != OSMesaGetCurrentContext()) {
32 int major, minor;
33 const char* versionString = (const char*) glGetString(GL_VERSION);
34 const char* extString = (const char*) glGetString(GL_EXTENSIONS);
35 gl_version_from_string(&major, &minor, versionString);
36
37 if (major == 1 && minor < 5) {
38 // We must have array and element_array buffer objects.
39 return;
40 }
tomhudson@google.come67bd3f2011-06-16 14:08:04 +0000[diff] [blame]41 gDefaultInterface.fNPOTRenderTargetSupport = kProbe_GrGLCapability;
42 gDefaultInterface.fMinRenderTargetHeight = kProbe_GrGLCapability;
43 gDefaultInterface.fMinRenderTargetWidth = kProbe_GrGLCapability;
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]44
45 gDefaultInterface.fActiveTexture = glActiveTexture;
46 GR_GL_GET_PROC(AttachShader);
47 GR_GL_GET_PROC(BindAttribLocation);
48 GR_GL_GET_PROC(BindBuffer);
49 gDefaultInterface.fBindTexture = glBindTexture;
50 gDefaultInterface.fBlendColor = glBlendColor;
51 gDefaultInterface.fBlendFunc = glBlendFunc;
52 GR_GL_GET_PROC(BufferData);
53 GR_GL_GET_PROC(BufferSubData);
54 gDefaultInterface.fClear = glClear;
55 gDefaultInterface.fClearColor = glClearColor;
56 gDefaultInterface.fClearStencil = glClearStencil;
57 gDefaultInterface.fClientActiveTexture = glClientActiveTexture;
58 gDefaultInterface.fColorMask = glColorMask;
59 gDefaultInterface.fColorPointer = glColorPointer;
60 gDefaultInterface.fColor4ub = glColor4ub;
61 GR_GL_GET_PROC(CompileShader);
62 gDefaultInterface.fCompressedTexImage2D = glCompressedTexImage2D;
63 GR_GL_GET_PROC(CreateProgram);
64 GR_GL_GET_PROC(CreateShader);
65 gDefaultInterface.fCullFace = glCullFace;
66 GR_GL_GET_PROC(DeleteBuffers);
67 GR_GL_GET_PROC(DeleteProgram);
68 GR_GL_GET_PROC(DeleteShader);
69 gDefaultInterface.fDeleteTextures = glDeleteTextures;
70 gDefaultInterface.fDepthMask = glDepthMask;
71 gDefaultInterface.fDisable = glDisable;
72 gDefaultInterface.fDisableClientState = glDisableClientState;
73 GR_GL_GET_PROC(DisableVertexAttribArray);
74 gDefaultInterface.fDrawArrays = glDrawArrays;
75 gDefaultInterface.fDrawElements = glDrawElements;
76 gDefaultInterface.fEnable = glEnable;
77 gDefaultInterface.fEnableClientState = glEnableClientState;
78 GR_GL_GET_PROC(EnableVertexAttribArray);
79 gDefaultInterface.fFrontFace = glFrontFace;
80 GR_GL_GET_PROC(GenBuffers);
81 GR_GL_GET_PROC(GetBufferParameteriv);
82 gDefaultInterface.fGetError = glGetError;
83 gDefaultInterface.fGetIntegerv = glGetIntegerv;
84 GR_GL_GET_PROC(GetProgramInfoLog);
85 GR_GL_GET_PROC(GetProgramiv);
86 GR_GL_GET_PROC(GetShaderInfoLog);
87 GR_GL_GET_PROC(GetShaderiv);
88 gDefaultInterface.fGetString = glGetString;
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame^]89 gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]90 gDefaultInterface.fGenTextures = glGenTextures;
91 GR_GL_GET_PROC(GetUniformLocation);
92 gDefaultInterface.fLineWidth = glLineWidth;
93 GR_GL_GET_PROC(LinkProgram);
94 gDefaultInterface.fLoadMatrixf = glLoadMatrixf;
95 GR_GL_GET_PROC(MapBuffer);
96 gDefaultInterface.fMatrixMode = glMatrixMode;
97 gDefaultInterface.fPointSize = glPointSize;
98 gDefaultInterface.fPixelStorei = glPixelStorei;
99 gDefaultInterface.fReadPixels = glReadPixels;
100 gDefaultInterface.fScissor = glScissor;
101 gDefaultInterface.fShadeModel = glShadeModel;
102 GR_GL_GET_PROC(ShaderSource);
103 gDefaultInterface.fStencilFunc = glStencilFunc;
104 GR_GL_GET_PROC(StencilFuncSeparate);
105 gDefaultInterface.fStencilMask = glStencilMask;
106 GR_GL_GET_PROC(StencilMaskSeparate);
107 gDefaultInterface.fStencilOp = glStencilOp;
108 GR_GL_GET_PROC(StencilOpSeparate);
109 gDefaultInterface.fTexCoordPointer = glTexCoordPointer;
110 gDefaultInterface.fTexEnvi = glTexEnvi;
111 //OSMesa on Mac's glTexImage2D takes a GLenum for internalFormat rather than a GLint.
112 gDefaultInterface.fTexImage2D = reinterpret_cast<GrGLTexImage2DProc>(glTexImage2D);
113 gDefaultInterface.fTexParameteri = glTexParameteri;
114 gDefaultInterface.fTexSubImage2D = glTexSubImage2D;
115 GR_GL_GET_PROC(Uniform1f);
116 GR_GL_GET_PROC(Uniform1i);
117 GR_GL_GET_PROC(Uniform1fv);
118 GR_GL_GET_PROC(Uniform1iv);
119 GR_GL_GET_PROC(Uniform2f);
120 GR_GL_GET_PROC(Uniform2i);
121 GR_GL_GET_PROC(Uniform2fv);
122 GR_GL_GET_PROC(Uniform2iv);
123 GR_GL_GET_PROC(Uniform3f);
124 GR_GL_GET_PROC(Uniform3i);
125 GR_GL_GET_PROC(Uniform3fv);
126 GR_GL_GET_PROC(Uniform3iv);
127 GR_GL_GET_PROC(Uniform4f);
128 GR_GL_GET_PROC(Uniform4i);
129 GR_GL_GET_PROC(Uniform4fv);
130 GR_GL_GET_PROC(Uniform4iv);
131 GR_GL_GET_PROC(UniformMatrix2fv);
132 GR_GL_GET_PROC(UniformMatrix3fv);
133 GR_GL_GET_PROC(UniformMatrix4fv);
134 GR_GL_GET_PROC(UnmapBuffer);
135 GR_GL_GET_PROC(UseProgram);
136 GR_GL_GET_PROC(VertexAttrib4fv);
137 GR_GL_GET_PROC(VertexAttribPointer);
138 gDefaultInterface.fVertexPointer = glVertexPointer;
139 gDefaultInterface.fViewport = glViewport;
140
141 // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since
142 // GL_ARB_framebuffer_object doesn't use ARB suffix.)
143 if (major >= 3 || has_gl_extension_from_string(
144 "GL_ARB_framebuffer_object", extString)) {
145 GR_GL_GET_PROC(GenFramebuffers);
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame^]146 GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
147 GR_GL_GET_PROC(GetRenderbufferParameteriv);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]148 GR_GL_GET_PROC(BindFramebuffer);
149 GR_GL_GET_PROC(FramebufferTexture2D);
150 GR_GL_GET_PROC(CheckFramebufferStatus);
151 GR_GL_GET_PROC(DeleteFramebuffers);
152 GR_GL_GET_PROC(RenderbufferStorage);
153 GR_GL_GET_PROC(GenRenderbuffers);
154 GR_GL_GET_PROC(DeleteRenderbuffers);
155 GR_GL_GET_PROC(FramebufferRenderbuffer);
156 GR_GL_GET_PROC(BindRenderbuffer);
157 GR_GL_GET_PROC(RenderbufferStorageMultisample);
158 GR_GL_GET_PROC(BlitFramebuffer);
159 } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object",
160 extString)) {
161 GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
bsalomon@google.comcee661a2011-07-26 12:32:36 +0000[diff] [blame^]162 GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
163 GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]164 GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
165 GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
166 GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
167 GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
168 GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT);
169 GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT);
170 GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
171 GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
172 GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT);
173 if (has_gl_extension_from_string("GL_EXT_framebuffer_multisample",
174 extString)) {
175 GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
176 }
177 if (has_gl_extension_from_string("GL_EXT_framebuffer_blit",
178 extString)) {
179 GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT);
180 }
181 } else {
182 // we must have FBOs
183 return;
184 }
bsalomon@google.com271cffc2011-05-20 14:13:56 +0000[diff] [blame]185 GR_GL_GET_PROC(BindFragDataLocationIndexed);
bungeman@google.com0e454412011-05-19 17:47:02 +0000[diff] [blame]186 gDefaultInterface.fBindingsExported = kDesktop_GrGLBinding;
187
188 gDefaultInterfaceInit = true;
189 }
190 if (gDefaultInterfaceInit)
191 GrGLSetGLInterface(&gDefaultInterface);
192}