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gerrit-public.fairphone.software / platform / external / skia / bc5cf51627505f763586100675aa60b66d743c7e / . / gpu / src / win / GrGLDefaultInterface_win.cpp
blob: b257b947c0fa7c79b3241eaa8f1d189dd84edcb4 [file] [log] [blame]
epoger@google.comec3ed6a2011-07-28 14:26:00 +0000[diff] [blame]1
bsalomon@google.comf987d1b2011-04-04 17:13:52 +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.
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]7 */
8
epoger@google.comec3ed6a2011-07-28 14:26:00 +0000[diff] [blame]9
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]10#include "GrGLInterface.h"
11
12#include <Windows.h>
13#include <GL/GL.h>
14
15/*
16 * Windows makes the GL funcs all be __stdcall instead of __cdecl :(
17 * This implementation will only work if GR_GL_FUNCTION_TYPE is __stdcall.
18 * Otherwise, a springboard would be needed that hides the calling convention.
19 */
20
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]21#define GR_GL_GET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) wglGetProcAddress("gl" #F);
22#define GR_GL_GET_PROC_SUFFIX(F, S) interface->f ## F = (GrGL ## F ## Proc) wglGetProcAddress("gl" #F #S);
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]23
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]24const GrGLInterface* GrGLDefaultInterface() {
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]25 // wglGetProcAddress requires a context.
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]26 // GL Function pointers retrieved in one context may not be valid in another
27 // context. For that reason we create a new GrGLInterface each time we're
28 // called.
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]29 if (NULL != wglGetCurrentContext()) {
30 int major, minor;
31 const char* versionString = (const char*) glGetString(GL_VERSION);
32 const char* extString = (const char*) glGetString(GL_EXTENSIONS);
33 gl_version_from_string(&major, &minor, versionString);
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]34
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]35 if (major == 1 && minor < 5) {
36 // We must have array and element_array buffer objects.
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]37 return NULL;
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]38 }
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]39 GrGLInterface* interface = new GrGLInterface();
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]40
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]41 interface->fNPOTRenderTargetSupport = kProbe_GrGLCapability;
42 interface->fMinRenderTargetHeight = kProbe_GrGLCapability;
43 interface->fMinRenderTargetWidth = kProbe_GrGLCapability;
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]44
45 // Functions that are part of GL 1.1 will return NULL in
46 // wglGetProcAddress
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]47 interface->fBlendFunc = glBlendFunc;
48 interface->fClear = glClear;
49 interface->fClearColor = glClearColor;
50 interface->fClearStencil = glClearStencil;
51 interface->fColor4ub = glColor4ub;
52 interface->fColorMask = glColorMask;
53 interface->fColorPointer = glColorPointer;
54 interface->fCullFace = glCullFace;
55 interface->fDeleteTextures = glDeleteTextures;
56 interface->fDepthMask = glDepthMask;
57 interface->fDisable = glDisable;
58 interface->fDisableClientState = glDisableClientState;
59 interface->fDrawArrays = glDrawArrays;
60 interface->fDrawElements = glDrawElements;
61 interface->fDrawBuffer = glDrawBuffer;
62 interface->fEnable = glEnable;
63 interface->fEnableClientState = glEnableClientState;
64 interface->fFrontFace = glFrontFace;
65 interface->fGenTextures = glGenTextures;
66 interface->fGetError = glGetError;
67 interface->fGetIntegerv = glGetIntegerv;
68 interface->fGetString = glGetString;
69 interface->fGetTexLevelParameteriv = glGetTexLevelParameteriv;
70 interface->fLineWidth = glLineWidth;
71 interface->fLoadMatrixf = glLoadMatrixf;
72 interface->fMatrixMode = glMatrixMode;
73 interface->fPixelStorei = glPixelStorei;
74 interface->fPointSize = glPointSize;
75 interface->fReadBuffer = glReadBuffer;
76 interface->fReadPixels = glReadPixels;
77 interface->fScissor = glScissor;
78 interface->fShadeModel = glShadeModel;
79 interface->fStencilFunc = glStencilFunc;
80 interface->fStencilMask = glStencilMask;
81 interface->fStencilOp = glStencilOp;
82 interface->fTexImage2D = glTexImage2D;
83 interface->fTexParameteri = glTexParameteri;
84 interface->fTexCoordPointer = glTexCoordPointer;
85 interface->fTexEnvi = glTexEnvi;
86 interface->fTexSubImage2D = glTexSubImage2D;
87 interface->fViewport = glViewport;
88 interface->fVertexPointer = glVertexPointer;
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]89
90 GR_GL_GET_PROC(ActiveTexture);
91 GR_GL_GET_PROC(AttachShader);
92 GR_GL_GET_PROC(BindAttribLocation);
93 GR_GL_GET_PROC(BindBuffer);
94 GR_GL_GET_PROC(BindTexture);
bsalomon@google.combc5cf512011-09-21 16:21:07 +0000[diff] [blame^]95 GR_GL_GET_PROC(BindFragDataLocation);
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]96 GR_GL_GET_PROC(BlendColor);
97 GR_GL_GET_PROC(BufferData);
98 GR_GL_GET_PROC(BufferSubData);
99 GR_GL_GET_PROC(ClientActiveTexture);
100 GR_GL_GET_PROC(CompileShader);
101 GR_GL_GET_PROC(CompressedTexImage2D);
102 GR_GL_GET_PROC(CreateProgram);
103 GR_GL_GET_PROC(CreateShader);
104 GR_GL_GET_PROC(DeleteBuffers);
105 GR_GL_GET_PROC(DeleteProgram);
106 GR_GL_GET_PROC(DeleteShader);
107 GR_GL_GET_PROC(DisableVertexAttribArray);
108 GR_GL_GET_PROC(DrawBuffers);
109 GR_GL_GET_PROC(EnableVertexAttribArray);
110 GR_GL_GET_PROC(GenBuffers);
111 GR_GL_GET_PROC(GetBufferParameteriv);
112 GR_GL_GET_PROC(GetProgramInfoLog);
113 GR_GL_GET_PROC(GetProgramiv);
114 GR_GL_GET_PROC(GetShaderInfoLog);
115 GR_GL_GET_PROC(GetShaderiv);
116 GR_GL_GET_PROC(GetUniformLocation);
117 GR_GL_GET_PROC(LinkProgram);
118 GR_GL_GET_PROC(ShaderSource);
119 GR_GL_GET_PROC(StencilFuncSeparate);
120 GR_GL_GET_PROC(StencilMaskSeparate);
121 GR_GL_GET_PROC(StencilOpSeparate);
122 GR_GL_GET_PROC(Uniform1f);
123 GR_GL_GET_PROC(Uniform1i);
124 GR_GL_GET_PROC(Uniform1fv);
125 GR_GL_GET_PROC(Uniform1iv);
126 GR_GL_GET_PROC(Uniform2f);
127 GR_GL_GET_PROC(Uniform2i);
128 GR_GL_GET_PROC(Uniform2fv);
129 GR_GL_GET_PROC(Uniform2iv);
130 GR_GL_GET_PROC(Uniform3f);
131 GR_GL_GET_PROC(Uniform3i);
132 GR_GL_GET_PROC(Uniform3fv);
133 GR_GL_GET_PROC(Uniform3iv);
134 GR_GL_GET_PROC(Uniform4f);
135 GR_GL_GET_PROC(Uniform4i);
136 GR_GL_GET_PROC(Uniform4fv);
137 GR_GL_GET_PROC(Uniform4iv);
138 GR_GL_GET_PROC(UniformMatrix2fv);
139 GR_GL_GET_PROC(UniformMatrix3fv);
140 GR_GL_GET_PROC(UniformMatrix4fv);
141 GR_GL_GET_PROC(UseProgram);
142 GR_GL_GET_PROC(VertexAttrib4fv);
143 GR_GL_GET_PROC(VertexAttribPointer);
144 GR_GL_GET_PROC(BindFragDataLocationIndexed);
145
146 // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since
147 // GL_ARB_framebuffer_object doesn't use ARB suffix.)
148 if (major >= 3 || has_gl_extension_from_string("GL_ARB_framebuffer_object", extString)) {
149 GR_GL_GET_PROC(GenFramebuffers);
150 GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
151 GR_GL_GET_PROC(GetRenderbufferParameteriv);
152 GR_GL_GET_PROC(BindFramebuffer);
153 GR_GL_GET_PROC(FramebufferTexture2D);
154 GR_GL_GET_PROC(CheckFramebufferStatus);
155 GR_GL_GET_PROC(DeleteFramebuffers);
156 GR_GL_GET_PROC(RenderbufferStorage);
157 GR_GL_GET_PROC(GenRenderbuffers);
158 GR_GL_GET_PROC(DeleteRenderbuffers);
159 GR_GL_GET_PROC(FramebufferRenderbuffer);
160 GR_GL_GET_PROC(BindRenderbuffer);
161 GR_GL_GET_PROC(RenderbufferStorageMultisample);
162 GR_GL_GET_PROC(BlitFramebuffer);
163 } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object", extString)) {
164 GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
165 GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
166 GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
167 GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
168 GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
169 GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
170 GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
171 GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT);
172 GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT);
173 GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
174 GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
175 GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT);
176 if (has_gl_extension_from_string("GL_EXT_framebuffer_multisample", extString)) {
177 GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
178 }
179 if (has_gl_extension_from_string("GL_EXT_framebuffer_blit", extString)) {
180 GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT);
181 }
182 } else {
183 // we must have FBOs
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]184 delete interface;
185 return NULL;
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]186 }
187 GR_GL_GET_PROC(MapBuffer);
188 GR_GL_GET_PROC(UnmapBuffer);
189
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]190 interface->fBindingsExported = kDesktop_GrGLBinding;
bsalomon@google.com0b77d682011-08-19 13:28:54 +0000[diff] [blame]191
bsalomon@google.com6fb736f2011-09-16 18:51:57 +0000[diff] [blame]192 return interface;
193 } else {
194 return NULL;
bsalomon@google.comf987d1b2011-04-04 17:13:52 +0000[diff] [blame]195 }
196}