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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 : : ************************************************************************/
28 : :
29 : : #include <osl/diagnose.hxx>
30 : :
31 : : #include "OGLTrans_Shaders.hxx"
32 : :
33 : : namespace unx
34 : : {
35 : : #include <GL/glx.h>
36 : : #include <GL/glxext.h>
37 : : }
38 : :
39 : : bool OGLShaders::cbInitialized = false;
40 : :
41 : : #ifdef GL_VERSION_2_0
42 : :
43 : : PFNGLCREATESHADERPROC OGLShaders::glCreateShader = NULL;
44 : : PFNGLSHADERSOURCEPROC OGLShaders::glShaderSource = NULL;
45 : : PFNGLCOMPILESHADERPROC OGLShaders::glCompileShader = NULL;
46 : : PFNGLGETSHADERIVPROC OGLShaders::glGetShaderiv = NULL;
47 : : PFNGLGETSHADERINFOLOGPROC OGLShaders::glGetShaderInfoLog = NULL;
48 : : PFNGLDELETESHADERPROC OGLShaders::glDeleteShader = NULL;
49 : : PFNGLCREATEPROGRAMPROC OGLShaders::glCreateProgram = NULL;
50 : : PFNGLATTACHSHADERPROC OGLShaders::glAttachShader = NULL;
51 : : PFNGLLINKPROGRAMPROC OGLShaders::glLinkProgram = NULL;
52 : : PFNGLGETPROGRAMIVPROC OGLShaders::glGetProgramiv = NULL;
53 : : PFNGLGETPROGRAMINFOLOGPROC OGLShaders::glGetProgramInfoLog = NULL;
54 : : PFNGLUSEPROGRAMPROC OGLShaders::glUseProgram = NULL;
55 : : PFNGLDELETEPROGRAMPROC OGLShaders::glDeleteProgram = NULL;
56 : : PFNGLGETUNIFORMLOCATIONPROC OGLShaders::glGetUniformLocation = NULL;
57 : : PFNGLUNIFORM1IPROC OGLShaders::glUniform1i = NULL;
58 : : PFNGLUNIFORM1FPROC OGLShaders::glUniform1f = NULL;
59 : : #endif
60 : :
61 : 0 : bool OGLShaders::Initialize()
62 : : {
63 : : #ifdef GL_VERSION_2_0
64 : 0 : if( !cbInitialized ) {
65 : 0 : glCreateShader = (PFNGLCREATESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glCreateShader" );
66 : 0 : glShaderSource = (PFNGLSHADERSOURCEPROC) unx::glXGetProcAddress( (unsigned char *) "glShaderSource" );
67 : 0 : glCompileShader = (PFNGLCOMPILESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glCompileShader" );
68 : 0 : glGetShaderiv = (PFNGLGETSHADERIVPROC) unx::glXGetProcAddress( (unsigned char *) "glGetShaderiv" );
69 : 0 : glGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) unx::glXGetProcAddress( (unsigned char *) "glGetShaderInfoLog" );
70 : 0 : glDeleteShader = (PFNGLDELETESHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glDeleteShader" );
71 : 0 : glCreateProgram = (PFNGLCREATEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glCreateProgram" );
72 : 0 : glAttachShader = (PFNGLATTACHSHADERPROC) unx::glXGetProcAddress( (unsigned char *) "glAttachShader" );
73 : 0 : glLinkProgram = (PFNGLLINKPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glLinkProgram" );
74 : 0 : glGetProgramiv = (PFNGLGETPROGRAMIVPROC) unx::glXGetProcAddress( (unsigned char *) "glGetProgramiv" );
75 : 0 : glGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) unx::glXGetProcAddress( (unsigned char *) "glGetProgramInfoLog" );
76 : 0 : glUseProgram = (PFNGLUSEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glUseProgram" );
77 : 0 : glDeleteProgram = (PFNGLDELETEPROGRAMPROC) unx::glXGetProcAddress( (unsigned char *) "glDeleteProgram" );
78 : 0 : glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) unx::glXGetProcAddress( (unsigned char *) "glGetUniformLocation" );
79 : 0 : glUniform1i = (PFNGLUNIFORM1IPROC) unx::glXGetProcAddress( (unsigned char *) "glUniform1i" );
80 : 0 : glUniform1f = (PFNGLUNIFORM1FPROC) unx::glXGetProcAddress( (unsigned char *) "glUniform1f" );
81 : 0 : cbInitialized = true;
82 : : }
83 : :
84 : 0 : return glCreateShader != NULL;
85 : : #else
86 : : return false;
87 : : #endif
88 : : }
89 : :
90 : 0 : GLuint OGLShaders::LinkProgram( const char *vertexShader, const char *fragmentShader )
91 : : {
92 : : #ifdef GL_VERSION_2_0
93 : 0 : if( !Initialize() )
94 : 0 : return 0;
95 : :
96 : : GLhandleARB vertexObject, fragmentObject, programObject;
97 : : GLint vertexCompiled, fragmentCompiled, programLinked;
98 : : char log[1024];
99 : :
100 : 0 : vertexObject = glCreateShader( GL_VERTEX_SHADER );
101 : 0 : fragmentObject = glCreateShader( GL_FRAGMENT_SHADER );
102 : : SAL_INFO("slideshow.opengl", "checkpoint 1: shaders created (" << (glGetError() == GL_NO_ERROR) << ") vertex: " << vertexObject << " fragment: " << fragmentObject);
103 : :
104 : :
105 : 0 : glShaderSource( vertexObject, 1, &vertexShader, NULL );
106 : 0 : glShaderSource( fragmentObject, 1, &fragmentShader, NULL );
107 : :
108 : 0 : glCompileShader( vertexObject );
109 : 0 : glGetShaderInfoLog( vertexObject, sizeof( log ), NULL, log );
110 : : SAL_INFO("slideshow.opengl", "vertex compile log: " << log);
111 : 0 : glGetShaderiv( vertexObject, GL_COMPILE_STATUS, &vertexCompiled );
112 : 0 : glCompileShader( fragmentObject );
113 : 0 : glGetShaderInfoLog( fragmentObject, sizeof( log ), NULL, log );
114 : : SAL_INFO("slideshow.opengl", "fragment compile log: " << log);
115 : 0 : glGetShaderiv( fragmentObject, GL_COMPILE_STATUS, &fragmentCompiled );
116 : :
117 : 0 : if( !vertexCompiled || !fragmentCompiled )
118 : 0 : return 0;
119 : :
120 : : SAL_INFO("slideshow.opengl", "checkpoint 2: shaders compiled (" << (glGetError() == GL_NO_ERROR) << ')');
121 : :
122 : 0 : programObject = glCreateProgram();
123 : 0 : glAttachShader( programObject, vertexObject );
124 : 0 : glAttachShader( programObject, fragmentObject );
125 : :
126 : 0 : glLinkProgram( programObject );
127 : 0 : glGetProgramInfoLog( programObject, sizeof( log ), NULL, log );
128 : : SAL_INFO("slideshow.opengl", "program link log: " << log);
129 : 0 : glGetProgramiv( programObject, GL_LINK_STATUS, &programLinked );
130 : :
131 : 0 : if( !programLinked )
132 : 0 : return 0;
133 : :
134 : : SAL_INFO("slideshow.opengl", "checkpoint 3: program linked (" << (glGetError() == GL_NO_ERROR) << ')');
135 : :
136 : 0 : return programObject;
137 : : #else
138 : : return 0;
139 : : #endif
140 : : }
141 : :
142 : : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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