annotate test/testdyngles.c @ 3099:82e60908fab1

Date: Mon, 23 Mar 2009 09:17:24 +0200 From: "Mike Gorchak" Subject: New QNX patches Please apply patch qnx4.diff, which is attached. What has been done: 1)Added back OpenGL ES renderer for QNX target. Added few corrections to OpenGL ES renderer to let it work under QNX. OpenGL ES renderer do not support textures under QNX, so I think some additional work must be done. 2) Added GL_OES_query_matrix extension to SDL_opengles.h header file, which required by OpenGL ES 1.1 specification. 3) Added attribute clearing at the entrance of function SDL_GL_GetAttribure(). Added error checking into the function SDL_GL_GetAttribure(), because some attributes can't be obtained in OpenGL ES 1.0. 4) Porting testdyngles to OpenGL ES 1.0 (1.1 has glColor4ub() and glColor4f() functions, but 1.0 has glColor4f() only). 5) Added error checking after obtaining attributes using SDL_GL_GetAttribute() function to the testgl2 and testgles. 6) Small correction to testmultiaudio with printing errors. 7) Added software and accelerated OpenGL ES 1.0 support into the QNX GF driver. Please remove ./src/audio/nto directory - it will not be used anymore. Please create ./src/audio/qsa directory and add content of the archive qsa.tar.gz into this directory. I rewrote some sound code, added support for multiple audio cards, enumeration, etc. Added initial support for capture. As far as I can understand SDL 1.3 is not supporting audio capture right now ? Sam, Am I right ? Or audio capture must be supported through the PlayDevice routine ? And last, please put file SDL_gf_opengles.c to the ./src/video/qnxgf directory. It is OpenGL ES 1.1 emulation layer for some functions, which are not supported by OpenGL ES 1.0.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Mar 2009 10:33:12 +0000
parents 0b6f51c29267
children 7f684f249ec9
rev   line source
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1 /*
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2 * Small SDL example to demonstrate dynamically loading
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3 * OpenGL lib and functions
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4 *
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5 * (FYI it was supposed to look like snow in the wind or something...)
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6 *
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7 * Compile with :
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8 * gcc testdyngl.c `sdl-config --libs --cflags` -o testdyngl -DHAVE_OPENGL
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9 *
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10 * You can specify a different OpenGL lib on the command line, i.e. :
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11 * ./testdyngl /usr/X11R6/lib/libGL.so.1.2
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12 * or
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13 * ./testdyngl /usr/lib/libGL.so.1.0.4496
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14 *
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15 */
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16
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17 #include <stdio.h>
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18 #include <stdlib.h>
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19
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20 #include "SDL.h"
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21
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22 #ifdef __IPHONEOS__
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23 #define HAVE_OPENGLES
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24 #endif
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25
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26 #ifdef HAVE_OPENGLES
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27
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28 #include "SDL_opengles.h"
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29
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30 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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31 static void
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32 quit(int rc)
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33 {
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34 SDL_Quit();
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35 exit(rc);
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36 }
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37
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38 void *
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39 get_funcaddr(const char *p)
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40 {
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41 void *f = SDL_GL_GetProcAddress(p);
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42 if (f) {
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43 return f;
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44 } else {
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45 printf("Unable to get function pointer for %s\n", p);
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46 quit(1);
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47 }
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48 return NULL;
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49 }
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50
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51 typedef struct
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52 {
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53 //void (APIENTRY * glBegin) (GLenum);
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54 //void (APIENTRY * glEnd) ();
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55 //void (APIENTRY * glVertex3f) (GLfloat, GLfloat, GLfloat);
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56
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57 void (APIENTRY * glEnableClientState) (GLenum array);
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58 void (APIENTRY * glVertexPointer) (GLint size, GLenum type,
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59 GLsizei stride,
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60 const GLvoid * pointer);
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61 void (APIENTRY * glDrawArrays) (GLenum mode, GLint first, GLsizei count);
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62
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63
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64 void (APIENTRY * glClearColor) (GLfloat, GLfloat, GLfloat, GLfloat);
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65 void (APIENTRY * glClear) (GLbitfield);
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66 void (APIENTRY * glDisable) (GLenum);
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67 void (APIENTRY * glEnable) (GLenum);
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68 void (APIENTRY * glColor4f) (GLfloat, GLfloat, GLfloat, GLfloat);
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69 void (APIENTRY * glPointSize) (GLfloat);
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70 void (APIENTRY * glHint) (GLenum, GLenum);
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71 void (APIENTRY * glBlendFunc) (GLenum, GLenum);
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72 void (APIENTRY * glMatrixMode) (GLenum);
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73 void (APIENTRY * glLoadIdentity) ();
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74 void (APIENTRY * glOrthof) (GLfloat, GLfloat, GLfloat, GLfloat,
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75 GLfloat, GLfloat);
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76 void (APIENTRY * glRotatef) (GLfloat, GLfloat, GLfloat, GLfloat);
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77 void (APIENTRY * glViewport) (GLint, GLint, GLsizei, GLsizei);
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78 void (APIENTRY * glFogf) (GLenum, GLfloat);
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79 }
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80 glfuncs;
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81
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82 void
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83 init_glfuncs(glfuncs * f)
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84 {
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85 f->glEnableClientState = get_funcaddr("glEnableClientState");
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86 f->glVertexPointer = get_funcaddr("glVertexPointer");
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87 f->glDrawArrays = get_funcaddr("glDrawArrays");
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88 f->glClearColor = get_funcaddr("glClearColor");
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89 f->glClear = get_funcaddr("glClear");
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90 f->glDisable = get_funcaddr("glDisable");
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91 f->glEnable = get_funcaddr("glEnable");
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92 f->glColor4f = get_funcaddr("glColor4f");
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93 f->glPointSize = get_funcaddr("glPointSize");
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94 f->glHint = get_funcaddr("glHint");
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95 f->glBlendFunc = get_funcaddr("glBlendFunc");
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96 f->glMatrixMode = get_funcaddr("glMatrixMode");
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97 f->glLoadIdentity = get_funcaddr("glLoadIdentity");
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98 f->glOrthof = get_funcaddr("glOrthof");
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99 f->glRotatef = get_funcaddr("glRotatef");
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100 f->glViewport = get_funcaddr("glViewport");
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101 f->glFogf = get_funcaddr("glFogf");
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102 }
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103
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104 #define NB_PIXELS 1000
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105
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106 int
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107 main(int argc, char *argv[])
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108 {
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109 glfuncs f;
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110 int i;
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111 SDL_Event event;
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112 int done = 0;
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113 GLfloat pixels[NB_PIXELS * 3];
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114 const char *gl_library = NULL; /* Use the default GL library */
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115
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116 int video_w, video_h;
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117
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118 /* you may want to change these according to the platform */
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119 video_w = 320;
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120 video_h = 480;
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121 #ifdef __QNXNTO__
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122 video_h = 640;
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123 video_w = 480;
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124 #endif /* __QNXNTO__ */
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125
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126 if (argv[1]) {
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127 gl_library = argv[1];
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128 }
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129
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130 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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131 printf("Unable to init SDL : %s\n", SDL_GetError());
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132 return (1);
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133 }
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134
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135 if (SDL_GL_LoadLibrary(gl_library) < 0) {
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136 printf("Unable to dynamically open GL ES lib : %s\n", SDL_GetError());
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137 quit(1);
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138 }
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139
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140 if (SDL_SetVideoMode(video_h, video_w, 0, SDL_OPENGL) == NULL) {
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141 printf("Unable to open video mode : %s\n", SDL_GetError());
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142 quit(1);
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143 }
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144
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145 /* Set the window manager title bar */
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146 SDL_WM_SetCaption("SDL Dynamic OpenGL ES Loading Test", "testdyngles");
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147
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148 init_glfuncs(&f);
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149
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150 for (i = 0; i < NB_PIXELS; i++) {
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151 pixels[3 * i] = rand() % 250 - 125;
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152 pixels[3 * i + 1] = rand() % 250 - 125;
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153 pixels[3 * i + 2] = rand() % 250 - 125;
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154 }
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155
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156 #ifdef __QNXNTO__
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157 f.glViewport(0, 0, video_h, video_w);
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158 #else
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159 f.glViewport(0, 0, video_w, video_h);
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160 #endif /* __QNXNTO__ */
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161
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162 f.glMatrixMode(GL_PROJECTION);
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163 f.glLoadIdentity();
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164 f.glOrthof(-100, 100, -100, 100, -500, 500);
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165
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166 f.glMatrixMode(GL_MODELVIEW);
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167 f.glLoadIdentity();
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168
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169 f.glEnable(GL_DEPTH_TEST);
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170 f.glDisable(GL_TEXTURE_2D);
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171 f.glEnable(GL_BLEND);
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172 f.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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173
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174 f.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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175 f.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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176
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177 f.glEnable(GL_POINT_SMOOTH);
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178 f.glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
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179 f.glPointSize(5.0f);
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180 f.glEnable(GL_FOG);
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181 f.glFogf(GL_FOG_START, -500);
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182 f.glFogf(GL_FOG_END, 500);
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183 f.glFogf(GL_FOG_DENSITY, 0.005);
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184
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185 do {
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186 f.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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187
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188 f.glRotatef(2.0, 1.0, 1.0, 1.0);
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189 f.glRotatef(1.0, 0.0, 1.0, 1.0);
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190
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191 f.glColor4f(1.0, 1.0, 1.0, 1.0);
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192
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193 f.glEnableClientState(GL_VERTEX_ARRAY);
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194 f.glVertexPointer(3, GL_FLOAT, 0, pixels);
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195 f.glDrawArrays(GL_POINTS, 0, NB_PIXELS);
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196
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197 SDL_GL_SwapBuffers();
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198
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199 while (SDL_PollEvent(&event)) {
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200 if (event.type == SDL_QUIT)
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201 done = 1;
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202 if (event.type == SDL_KEYDOWN)
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203 done = 1;
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204 }
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205
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206 SDL_Delay(20);
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207 }
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208 while (!done);
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209
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210 SDL_Quit();
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211 return 0;
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212 }
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213
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214 #else /* HAVE_OPENGLES */
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215
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216 int
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217 main(int argc, char *argv[])
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218 {
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219 printf("No OpenGL ES support on this system\n");
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220 return 1;
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221 }
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222
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223 #endif /* HAVE_OPENGLES */