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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*************************************************************************
3 : *
4 : * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 : *
6 : * Copyright 2008 by Sun Microsystems, Inc.
7 : *
8 : * OpenOffice.org - a multi-platform office productivity suite
9 : *
10 : * This file is part of OpenOffice.org.
11 : *
12 : * OpenOffice.org is free software: you can redistribute it and/or modify
13 : * it under the terms of the GNU Lesser General Public License version 3
14 : * only, as published by the Free Software Foundation.
15 : *
16 : * OpenOffice.org is distributed in the hope that it will be useful,
17 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 : * GNU Lesser General Public License version 3 for more details
20 : * (a copy is included in the LICENSE file that accompanied this code).
21 : *
22 : * You should have received a copy of the GNU Lesser General Public License
23 : * version 3 along with OpenOffice.org. If not, see
24 : * <http://www.openoffice.org/license.html>
25 : * for a copy of the LGPLv3 License.
26 : *
27 : * This file incorporates work covered by the following license notice:
28 : *
29 : * Licensed to the Apache Software Foundation (ASF) under one or more
30 : * contributor license agreements. See the NOTICE file distributed
31 : * with this work for additional information regarding copyright
32 : * ownership. The ASF licenses this file to you under the Apache
33 : * License, Version 2.0 (the "License"); you may not use this file
34 : * except in compliance with the License. You may obtain a copy of
35 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
36 : ************************************************************************/
37 :
38 : #include <config_lgpl.h>
39 :
40 : #include <osl/diagnose.hxx>
41 :
42 : #include "OGLTrans_Shaders.hxx"
43 :
44 : #ifdef _WIN32
45 :
46 : #elif defined(MACOSX)
47 :
48 : #else // UNX == X11
49 :
50 : namespace unx
51 : {
52 : #define GLX_GLXEXT_PROTOTYPES 1
53 : #include <GL/glx.h>
54 : #include <GL/glxext.h>
55 : }
56 :
57 : #endif
58 :
59 : bool OGLShaders::cbInitialized = false;
60 :
61 : #ifdef GL_VERSION_2_0
62 :
63 : PFNGLACTIVETEXTUREPROC OGLShaders::glActiveTexture = NULL;
64 : PFNGLCREATESHADERPROC OGLShaders::glCreateShader = NULL;
65 : PFNGLSHADERSOURCEPROC OGLShaders::glShaderSource = NULL;
66 : PFNGLCOMPILESHADERPROC OGLShaders::glCompileShader = NULL;
67 : PFNGLGETSHADERIVPROC OGLShaders::glGetShaderiv = NULL;
68 : PFNGLGETSHADERINFOLOGPROC OGLShaders::glGetShaderInfoLog = NULL;
69 : PFNGLDELETESHADERPROC OGLShaders::glDeleteShader = NULL;
70 : PFNGLCREATEPROGRAMPROC OGLShaders::glCreateProgram = NULL;
71 : PFNGLATTACHSHADERPROC OGLShaders::glAttachShader = NULL;
72 : PFNGLLINKPROGRAMPROC OGLShaders::glLinkProgram = NULL;
73 : PFNGLGETPROGRAMIVPROC OGLShaders::glGetProgramiv = NULL;
74 : PFNGLGETPROGRAMINFOLOGPROC OGLShaders::glGetProgramInfoLog = NULL;
75 : PFNGLUSEPROGRAMPROC OGLShaders::glUseProgram = NULL;
76 : PFNGLDELETEPROGRAMPROC OGLShaders::glDeleteProgram = NULL;
77 : PFNGLGETUNIFORMLOCATIONPROC OGLShaders::glGetUniformLocation = NULL;
78 : PFNGLUNIFORM1IPROC OGLShaders::glUniform1i = NULL;
79 : PFNGLUNIFORM1FPROC OGLShaders::glUniform1f = NULL;
80 : #endif
81 :
82 0 : bool OGLShaders::Initialize()
83 : {
84 : #ifdef GL_VERSION_2_0
85 0 : if( !cbInitialized ) {
86 : #ifdef _WIN32
87 : glActiveTexture = (PFNGLACTIVETEXTUREPROC) wglGetProcAddress( "glActiveTexture" );
88 : glCreateShader = (PFNGLCREATESHADERPROC) wglGetProcAddress( "glCreateShader" );
89 : glShaderSource = (PFNGLSHADERSOURCEPROC) wglGetProcAddress( "glShaderSource" );
90 : glCompileShader = (PFNGLCOMPILESHADERPROC) wglGetProcAddress( "glCompileShader" );
91 : glGetShaderiv = (PFNGLGETSHADERIVPROC) wglGetProcAddress( "glGetShaderiv" );
92 : glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) wglGetProcAddress( "glGetShaderInfoLog" );
93 : glDeleteShader = (PFNGLDELETESHADERPROC) wglGetProcAddress( "glDeleteShader" );
94 : glCreateProgram = (PFNGLCREATEPROGRAMPROC) wglGetProcAddress( "glCreateProgram" );
95 : glAttachShader = (PFNGLATTACHSHADERPROC) wglGetProcAddress( "glAttachShader" );
96 : glLinkProgram = (PFNGLLINKPROGRAMPROC) wglGetProcAddress( "glLinkProgram" );
97 : glGetProgramiv = (PFNGLGETPROGRAMIVPROC) wglGetProcAddress( "glGetProgramiv" );
98 : glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) wglGetProcAddress( "glGetProgramInfoLog" );
99 : glUseProgram = (PFNGLUSEPROGRAMPROC) wglGetProcAddress( "glUseProgram" );
100 : glDeleteProgram = (PFNGLDELETEPROGRAMPROC) wglGetProcAddress( "glDeleteProgram" );
101 : glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) wglGetProcAddress( "glGetUniformLocation" );
102 : glUniform1i = (PFNGLUNIFORM1IPROC) wglGetProcAddress( "glUniform1i" );
103 : glUniform1f = (PFNGLUNIFORM1FPROC) wglGetProcAddress( "glUniform1f" );
104 : cbInitialized = true;
105 : #elif defined(MACOSX)
106 : #else
107 0 : glActiveTexture = (PFNGLACTIVETEXTUREPROC) unx::glXGetProcAddress( (unsigned char *) "glActiveTexture" );
108 0 : glCreateShader = (PFNGLCREATESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glCreateShader" );
109 0 : glShaderSource = (PFNGLSHADERSOURCEPROC) unx::glXGetProcAddress( (unsigned char *) "glShaderSource" );
110 0 : glCompileShader = (PFNGLCOMPILESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glCompileShader" );
111 0 : glGetShaderiv = (PFNGLGETSHADERIVPROC) unx::glXGetProcAddress( (unsigned char *) "glGetShaderiv" );
112 0 : glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) unx::glXGetProcAddress( (unsigned char *) "glGetShaderInfoLog" );
113 0 : glDeleteShader = (PFNGLDELETESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glDeleteShader" );
114 0 : glCreateProgram = (PFNGLCREATEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glCreateProgram" );
115 0 : glAttachShader = (PFNGLATTACHSHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glAttachShader" );
116 0 : glLinkProgram = (PFNGLLINKPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glLinkProgram" );
117 0 : glGetProgramiv = (PFNGLGETPROGRAMIVPROC) unx::glXGetProcAddress( (unsigned char *) "glGetProgramiv" );
118 0 : glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) unx::glXGetProcAddress( (unsigned char *) "glGetProgramInfoLog" );
119 0 : glUseProgram = (PFNGLUSEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glUseProgram" );
120 0 : glDeleteProgram = (PFNGLDELETEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glDeleteProgram" );
121 0 : glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) unx::glXGetProcAddress( (unsigned char *) "glGetUniformLocation" );
122 0 : glUniform1i = (PFNGLUNIFORM1IPROC) unx::glXGetProcAddress( (unsigned char *) "glUniform1i" );
123 0 : glUniform1f = (PFNGLUNIFORM1FPROC) unx::glXGetProcAddress( (unsigned char *) "glUniform1f" );
124 0 : cbInitialized = true;
125 : #endif
126 : }
127 :
128 0 : return glCreateShader != NULL;
129 : #else
130 : return false;
131 : #endif
132 : }
133 :
134 0 : GLuint OGLShaders::LinkProgram( const char *vertexShader, const char *fragmentShader )
135 : {
136 : #ifdef GL_VERSION_2_0
137 0 : if( !Initialize() )
138 0 : return 0;
139 :
140 : GLhandleARB vertexObject, fragmentObject, programObject;
141 : GLint vertexCompiled, fragmentCompiled, programLinked;
142 : char log[1024];
143 :
144 0 : vertexObject = glCreateShader( GL_VERTEX_SHADER );
145 0 : fragmentObject = glCreateShader( GL_FRAGMENT_SHADER );
146 : SAL_INFO("slideshow.opengl", "checkpoint 1: shaders created (" << (glGetError() == GL_NO_ERROR) << ") vertex: " << vertexObject << " fragment: " << fragmentObject);
147 :
148 :
149 0 : glShaderSource( vertexObject, 1, &vertexShader, NULL );
150 0 : glShaderSource( fragmentObject, 1, &fragmentShader, NULL );
151 :
152 0 : glCompileShader( vertexObject );
153 0 : glGetShaderInfoLog( vertexObject, sizeof( log ), NULL, log );
154 : SAL_INFO("slideshow.opengl", "vertex compile log: " << log);
155 0 : glGetShaderiv( vertexObject, GL_COMPILE_STATUS, &vertexCompiled );
156 0 : glCompileShader( fragmentObject );
157 0 : glGetShaderInfoLog( fragmentObject, sizeof( log ), NULL, log );
158 : SAL_INFO("slideshow.opengl", "fragment compile log: " << log);
159 0 : glGetShaderiv( fragmentObject, GL_COMPILE_STATUS, &fragmentCompiled );
160 :
161 0 : if( !vertexCompiled || !fragmentCompiled )
162 0 : return 0;
163 :
164 : SAL_INFO("slideshow.opengl", "checkpoint 2: shaders compiled (" << (glGetError() == GL_NO_ERROR) << ')');
165 :
166 0 : programObject = glCreateProgram();
167 0 : glAttachShader( programObject, vertexObject );
168 0 : glAttachShader( programObject, fragmentObject );
169 :
170 0 : glLinkProgram( programObject );
171 0 : glGetProgramInfoLog( programObject, sizeof( log ), NULL, log );
172 : SAL_INFO("slideshow.opengl", "program link log: " << log);
173 0 : glGetProgramiv( programObject, GL_LINK_STATUS, &programLinked );
174 :
175 0 : if( !programLinked )
176 0 : return 0;
177 :
178 : SAL_INFO("slideshow.opengl", "checkpoint 3: program linked (" << (glGetError() == GL_NO_ERROR) << ')');
179 :
180 0 : return programObject;
181 : #else
182 : return 0;
183 : #endif
184 : }
185 :
186 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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