2013-01-14 09:15:39 +00:00
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/*
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* Copyright (C) 2011-2013 Gregory hainaut
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* Copyright (C) 2007-2009 Gabest
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*
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* This Program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This Program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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#include "stdafx.h"
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#include "GLLoader.h"
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2013-05-19 12:42:55 +00:00
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PFNGLACTIVETEXTUREPROC gl_ActiveTexture = NULL;
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PFNGLBLENDCOLORPROC gl_BlendColor = NULL;
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PFNGLATTACHSHADERPROC gl_AttachShader = NULL;
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PFNGLBINDBUFFERPROC gl_BindBuffer = NULL;
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PFNGLBINDBUFFERBASEPROC gl_BindBufferBase = NULL;
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PFNGLBINDFRAGDATALOCATIONINDEXEDPROC gl_BindFragDataLocationIndexed = NULL;
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PFNGLBINDFRAMEBUFFERPROC gl_BindFramebuffer = NULL;
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PFNGLBINDPROGRAMPIPELINEPROC gl_BindProgramPipeline = NULL;
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PFNGLBINDSAMPLERPROC gl_BindSampler = NULL;
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PFNGLBINDVERTEXARRAYPROC gl_BindVertexArray = NULL;
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PFNGLBLENDEQUATIONSEPARATEPROC gl_BlendEquationSeparate = NULL;
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PFNGLBLENDFUNCSEPARATEPROC gl_BlendFuncSeparate = NULL;
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PFNGLBLITFRAMEBUFFERPROC gl_BlitFramebuffer = NULL;
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PFNGLBUFFERDATAPROC gl_BufferData = NULL;
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PFNGLCHECKFRAMEBUFFERSTATUSPROC gl_CheckFramebufferStatus = NULL;
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PFNGLCLEARBUFFERFVPROC gl_ClearBufferfv = NULL;
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PFNGLCLEARBUFFERIVPROC gl_ClearBufferiv = NULL;
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PFNGLCOMPILESHADERPROC gl_CompileShader = NULL;
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PFNGLCOPYIMAGESUBDATANVPROC gl_CopyImageSubDataNV = NULL;
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PFNGLCREATEPROGRAMPROC gl_CreateProgram = NULL;
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PFNGLCREATESHADERPROC gl_CreateShader = NULL;
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PFNGLCREATESHADERPROGRAMVPROC gl_CreateShaderProgramv = NULL;
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PFNGLDELETEBUFFERSPROC gl_DeleteBuffers = NULL;
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PFNGLDELETEFRAMEBUFFERSPROC gl_DeleteFramebuffers = NULL;
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PFNGLDELETEPROGRAMPROC gl_DeleteProgram = NULL;
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PFNGLDELETEPROGRAMPIPELINESPROC gl_DeleteProgramPipelines = NULL;
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PFNGLDELETESAMPLERSPROC gl_DeleteSamplers = NULL;
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PFNGLDELETESHADERPROC gl_DeleteShader = NULL;
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PFNGLDELETEVERTEXARRAYSPROC gl_DeleteVertexArrays = NULL;
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PFNGLDETACHSHADERPROC gl_DetachShader = NULL;
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PFNGLDRAWBUFFERSPROC gl_DrawBuffers = NULL;
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PFNGLDRAWELEMENTSBASEVERTEXPROC gl_DrawElementsBaseVertex = NULL;
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PFNGLENABLEVERTEXATTRIBARRAYPROC gl_EnableVertexAttribArray = NULL;
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PFNGLFRAMEBUFFERRENDERBUFFERPROC gl_FramebufferRenderbuffer = NULL;
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PFNGLFRAMEBUFFERTEXTURE2DPROC gl_FramebufferTexture2D = NULL;
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PFNGLGENBUFFERSPROC gl_GenBuffers = NULL;
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PFNGLGENFRAMEBUFFERSPROC gl_GenFramebuffers = NULL;
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PFNGLGENPROGRAMPIPELINESPROC gl_GenProgramPipelines = NULL;
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PFNGLGENSAMPLERSPROC gl_GenSamplers = NULL;
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PFNGLGENVERTEXARRAYSPROC gl_GenVertexArrays = NULL;
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PFNGLGETBUFFERPARAMETERIVPROC gl_GetBufferParameteriv = NULL;
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PFNGLGETDEBUGMESSAGELOGARBPROC gl_GetDebugMessageLogARB = NULL;
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PFNGLGETFRAGDATAINDEXPROC gl_GetFragDataIndex = NULL;
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PFNGLGETFRAGDATALOCATIONPROC gl_GetFragDataLocation = NULL;
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PFNGLGETPROGRAMINFOLOGPROC gl_GetProgramInfoLog = NULL;
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PFNGLGETPROGRAMIVPROC gl_GetProgramiv = NULL;
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PFNGLGETSHADERIVPROC gl_GetShaderiv = NULL;
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PFNGLGETSTRINGIPROC gl_GetStringi = NULL;
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PFNGLISFRAMEBUFFERPROC gl_IsFramebuffer = NULL;
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PFNGLLINKPROGRAMPROC gl_LinkProgram = NULL;
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PFNGLMAPBUFFERPROC gl_MapBuffer = NULL;
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PFNGLMAPBUFFERRANGEPROC gl_MapBufferRange = NULL;
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PFNGLPROGRAMPARAMETERIPROC gl_ProgramParameteri = NULL;
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PFNGLSAMPLERPARAMETERFPROC gl_SamplerParameterf = NULL;
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PFNGLSAMPLERPARAMETERIPROC gl_SamplerParameteri = NULL;
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PFNGLSHADERSOURCEPROC gl_ShaderSource = NULL;
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PFNGLUNIFORM1IPROC gl_Uniform1i = NULL;
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PFNGLUNMAPBUFFERPROC gl_UnmapBuffer = NULL;
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PFNGLUSEPROGRAMSTAGESPROC gl_UseProgramStages = NULL;
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PFNGLVERTEXATTRIBIPOINTERPROC gl_VertexAttribIPointer = NULL;
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PFNGLVERTEXATTRIBPOINTERPROC gl_VertexAttribPointer = NULL;
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PFNGLTEXSTORAGE2DPROC gl_TexStorage2D = NULL;
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// NO GL4.1
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PFNGLUSEPROGRAMPROC gl_UseProgram = NULL;
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PFNGLGETSHADERINFOLOGPROC gl_GetShaderInfoLog = NULL;
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// NO GL4.2
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PFNGLGETUNIFORMBLOCKINDEXPROC gl_GetUniformBlockIndex = NULL;
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PFNGLUNIFORMBLOCKBINDINGPROC gl_UniformBlockBinding = NULL;
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2013-01-14 09:15:39 +00:00
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namespace GLLoader {
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2013-05-19 12:42:55 +00:00
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bool fglrx_buggy_driver = false;
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bool found_GL_ARB_separate_shader_objects = false;
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bool found_GL_ARB_shading_language_420pack = false;
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bool found_GL_ARB_texture_storage = false;
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2013-01-14 09:15:39 +00:00
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bool check_gl_version(uint32 major, uint32 minor) {
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2013-05-19 12:42:55 +00:00
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const GLubyte* s = glGetString(GL_VERSION);
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2013-01-14 09:15:39 +00:00
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if (s == NULL) return false;
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fprintf(stderr, "Supported Opengl version: %s on GPU: %s. Vendor: %s\n", s, glGetString(GL_RENDERER), glGetString(GL_VENDOR));
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2013-05-19 12:42:55 +00:00
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2013-01-14 09:15:39 +00:00
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// Could be useful to detect the GPU vendor:
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2013-05-19 12:42:55 +00:00
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if (strcmp((const char*)glGetString(GL_VENDOR), "ATI Technologies Inc.") == 0)
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fglrx_buggy_driver = true;
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2013-01-14 09:15:39 +00:00
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GLuint dot = 0;
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while (s[dot] != '\0' && s[dot] != '.') dot++;
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if (dot == 0) return false;
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GLuint major_gl = s[dot-1]-'0';
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GLuint minor_gl = s[dot+1]-'0';
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if ( (major_gl < major) || ( major_gl == major && minor_gl < minor ) ) {
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2013-05-19 09:19:20 +00:00
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fprintf(stderr, "OPENGL %d.%d is not supported\n", major, minor);
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2013-01-14 09:15:39 +00:00
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return false;
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}
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return true;
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}
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void init_gl_function() {
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2013-05-19 09:19:20 +00:00
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GL_LOADFN(gl_ActiveTexture, glActiveTexture);
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GL_LOADFN(gl_BlendColor, glBlendColor);
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GL_LOADFN(gl_AttachShader, glAttachShader);
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GL_LOADFN(gl_BindBuffer, glBindBuffer);
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GL_LOADFN(gl_BindBufferBase, glBindBufferBase);
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GL_LOADFN(gl_BindFragDataLocationIndexed, glBindFragDataLocationIndexed);
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GL_LOADFN(gl_BindFramebuffer, glBindFramebuffer);
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GL_LOADFN(gl_BindProgramPipeline, glBindProgramPipeline);
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GL_LOADFN(gl_BindSampler, glBindSampler);
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GL_LOADFN(gl_BindVertexArray, glBindVertexArray);
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GL_LOADFN(gl_BlendEquationSeparate, glBlendEquationSeparate);
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GL_LOADFN(gl_BlendFuncSeparate, glBlendFuncSeparate);
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GL_LOADFN(gl_BlitFramebuffer, glBlitFramebuffer);
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GL_LOADFN(gl_BufferData, glBufferData);
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GL_LOADFN(gl_CheckFramebufferStatus, glCheckFramebufferStatus);
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GL_LOADFN(gl_ClearBufferfv, glClearBufferfv);
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GL_LOADFN(gl_ClearBufferiv, glClearBufferiv);
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GL_LOADFN(gl_CompileShader, glCompileShader);
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GL_LOADFN(gl_CopyImageSubDataNV, glCopyImageSubDataNV);
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GL_LOADFN(gl_CreateProgram, glCreateProgram);
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GL_LOADFN(gl_CreateShader, glCreateShader);
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GL_LOADFN(gl_CreateShaderProgramv, glCreateShaderProgramv);
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GL_LOADFN(gl_DeleteBuffers, glDeleteBuffers);
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GL_LOADFN(gl_DeleteFramebuffers, glDeleteFramebuffers);
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GL_LOADFN(gl_DeleteProgram, glDeleteProgram);
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GL_LOADFN(gl_DeleteProgramPipelines, glDeleteProgramPipelines);
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GL_LOADFN(gl_DeleteSamplers, glDeleteSamplers);
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GL_LOADFN(gl_DeleteShader, glDeleteShader);
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GL_LOADFN(gl_DeleteVertexArrays, glDeleteVertexArrays);
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GL_LOADFN(gl_DetachShader, glDetachShader);
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GL_LOADFN(gl_DrawBuffers, glDrawBuffers);
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GL_LOADFN(gl_DrawElementsBaseVertex, glDrawElementsBaseVertex);
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GL_LOADFN(gl_EnableVertexAttribArray, glEnableVertexAttribArray);
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GL_LOADFN(gl_FramebufferRenderbuffer, glFramebufferRenderbuffer);
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GL_LOADFN(gl_FramebufferTexture2D, glFramebufferTexture2D);
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GL_LOADFN(gl_GenBuffers, glGenBuffers);
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GL_LOADFN(gl_GenFramebuffers, glGenFramebuffers);
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GL_LOADFN(gl_GenProgramPipelines, glGenProgramPipelines);
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GL_LOADFN(gl_GenSamplers, glGenSamplers);
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GL_LOADFN(gl_GenVertexArrays, glGenVertexArrays);
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GL_LOADFN(gl_GetBufferParameteriv, glGetBufferParameteriv);
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GL_LOADFN(gl_GetDebugMessageLogARB, glGetDebugMessageLogARB);
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GL_LOADFN(gl_GetFragDataIndex, glGetFragDataIndex);
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GL_LOADFN(gl_GetFragDataLocation, glGetFragDataLocation);
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GL_LOADFN(gl_GetProgramInfoLog, glGetProgramInfoLog);
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GL_LOADFN(gl_GetProgramiv, glGetProgramiv);
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GL_LOADFN(gl_GetShaderiv, glGetShaderiv);
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GL_LOADFN(gl_GetStringi, glGetStringi);
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GL_LOADFN(gl_IsFramebuffer, glIsFramebuffer);
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GL_LOADFN(gl_LinkProgram, glLinkProgram);
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GL_LOADFN(gl_MapBuffer, glMapBuffer);
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GL_LOADFN(gl_MapBufferRange, glMapBufferRange);
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GL_LOADFN(gl_ProgramParameteri, glProgramParameteri);
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GL_LOADFN(gl_SamplerParameterf, glSamplerParameterf);
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GL_LOADFN(gl_SamplerParameteri, glSamplerParameteri);
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GL_LOADFN(gl_ShaderSource, glShaderSource);
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GL_LOADFN(gl_Uniform1i, glUniform1i);
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GL_LOADFN(gl_UnmapBuffer, glUnmapBuffer);
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GL_LOADFN(gl_UseProgramStages, glUseProgramStages);
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GL_LOADFN(gl_VertexAttribIPointer, glVertexAttribIPointer);
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GL_LOADFN(gl_VertexAttribPointer, glVertexAttribPointer);
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GL_LOADFN(gl_TexStorage2D, glTexStorage2D);
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2013-05-19 12:42:55 +00:00
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// NO GL4.1
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GL_LOADFN(gl_UseProgram, glUseProgram);
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GL_LOADFN(gl_GetShaderInfoLog, glGetShaderInfoLog);
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// NO GL4.2
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GL_LOADFN(gl_GetUniformBlockIndex, glGetUniformBlockIndex);
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GL_LOADFN(gl_UniformBlockBinding, glUniformBlockBinding);
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2013-01-14 09:15:39 +00:00
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}
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bool check_gl_supported_extension() {
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int max_ext = 0;
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glGetIntegerv(GL_NUM_EXTENSIONS, &max_ext);
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fprintf(stderr, "DEBUG: check_gl_supported_extension\n");
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2013-05-19 09:19:20 +00:00
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if (gl_GetStringi && max_ext) {
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2013-01-14 09:15:39 +00:00
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for (GLint i = 0; i < max_ext; i++) {
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2013-05-19 09:19:20 +00:00
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string ext((const char*)gl_GetStringi(GL_EXTENSIONS, i));
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2013-01-14 09:15:39 +00:00
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if (ext.compare("GL_ARB_separate_shader_objects") == 0) {
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2013-05-19 12:42:55 +00:00
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if (!fglrx_buggy_driver) found_GL_ARB_separate_shader_objects = true;
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2013-01-14 09:15:39 +00:00
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}
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if (ext.compare("GL_ARB_shading_language_420pack") == 0) {
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found_GL_ARB_shading_language_420pack = true;
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}
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2013-05-18 16:19:23 +00:00
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if (ext.compare("GL_ARB_texture_storage") == 0) {
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found_GL_ARB_texture_storage = true;
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}
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2013-01-14 09:15:39 +00:00
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fprintf(stderr, "EXT: %s\n", ext.c_str());
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}
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}
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2013-05-18 16:19:23 +00:00
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if (!found_GL_ARB_separate_shader_objects) {
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2013-01-14 09:15:39 +00:00
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fprintf(stderr, "GL_ARB_separate_shader_objects is not supported\n");
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2013-05-19 12:42:55 +00:00
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//return false;
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2013-01-14 09:15:39 +00:00
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}
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2013-05-18 16:19:23 +00:00
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if (!found_GL_ARB_shading_language_420pack) {
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2013-01-14 09:15:39 +00:00
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fprintf(stderr, "GL_ARB_shading_language_420pack is not supported\n");
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//return false;
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}
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2013-05-18 16:19:23 +00:00
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if (!found_GL_ARB_texture_storage) {
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fprintf(stderr, "GL_ARB_texture_storage is not supported\n");
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return false;
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}
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2013-01-14 09:15:39 +00:00
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return true;
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}
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}
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