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annotate test/testgl2.c @ 5167:97423d858a1a

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Added an intro to the features and goals of the 2D rendering API.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 10:03:55 -0800
parents 19691cebb866
children 762e40fb8e28
rev   line source
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
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1 #include <stdlib.h>
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2 #include <stdio.h>
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3 #include <string.h>
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4 #include <math.h>
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5
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6 #include "common.h"
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7
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8 #ifdef __MACOS__
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9 #define HAVE_OPENGL
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10 #endif
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11
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12 #ifdef HAVE_OPENGL
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13
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14 #include "SDL_opengl.h"
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15
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16 /* Undefine this if you want a flat cube instead of a rainbow cube */
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17 #define SHADED_CUBE
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18
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19 static CommonState *state;
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20 static SDL_GLContext context;
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21
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22 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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23 static void
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24 quit(int rc)
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25 {
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26 if (context) {
2328
91e601d9df8b re: bug#563. checking in some commented out trace code and a fix so that the in testalpha.c the background only flashes when alpha == 255. The problem that is being
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27 /* SDL_GL_MakeCurrent(0, NULL); *//* doesn't do anything */
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28 SDL_GL_DeleteContext(context);
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29 }
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30 CommonQuit(state);
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31 exit(rc);
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32 }
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33
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34 static void
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35 Render()
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36 {
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37 static float color[8][3] = {
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38 {1.0, 1.0, 0.0},
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39 {1.0, 0.0, 0.0},
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40 {0.0, 0.0, 0.0},
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41 {0.0, 1.0, 0.0},
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42 {0.0, 1.0, 1.0},
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43 {1.0, 1.0, 1.0},
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44 {1.0, 0.0, 1.0},
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45 {0.0, 0.0, 1.0}
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46 };
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47 static float cube[8][3] = {
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48 {0.5, 0.5, -0.5},
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49 {0.5, -0.5, -0.5},
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50 {-0.5, -0.5, -0.5},
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51 {-0.5, 0.5, -0.5},
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52 {-0.5, 0.5, 0.5},
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53 {0.5, 0.5, 0.5},
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54 {0.5, -0.5, 0.5},
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55 {-0.5, -0.5, 0.5}
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56 };
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57
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58 /* Do our drawing, too. */
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59 glClearColor(0.0, 0.0, 0.0, 1.0);
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60 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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61
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62 glBegin(GL_QUADS);
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63
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64 #ifdef SHADED_CUBE
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65 glColor3fv(color[0]);
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66 glVertex3fv(cube[0]);
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67 glColor3fv(color[1]);
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68 glVertex3fv(cube[1]);
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69 glColor3fv(color[2]);
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70 glVertex3fv(cube[2]);
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71 glColor3fv(color[3]);
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72 glVertex3fv(cube[3]);
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73
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74 glColor3fv(color[3]);
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75 glVertex3fv(cube[3]);
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76 glColor3fv(color[4]);
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77 glVertex3fv(cube[4]);
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78 glColor3fv(color[7]);
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79 glVertex3fv(cube[7]);
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80 glColor3fv(color[2]);
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81 glVertex3fv(cube[2]);
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82
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83 glColor3fv(color[0]);
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84 glVertex3fv(cube[0]);
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85 glColor3fv(color[5]);
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86 glVertex3fv(cube[5]);
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87 glColor3fv(color[6]);
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88 glVertex3fv(cube[6]);
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89 glColor3fv(color[1]);
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90 glVertex3fv(cube[1]);
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91
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92 glColor3fv(color[5]);
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93 glVertex3fv(cube[5]);
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94 glColor3fv(color[4]);
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95 glVertex3fv(cube[4]);
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96 glColor3fv(color[7]);
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97 glVertex3fv(cube[7]);
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98 glColor3fv(color[6]);
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99 glVertex3fv(cube[6]);
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100
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101 glColor3fv(color[5]);
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102 glVertex3fv(cube[5]);
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103 glColor3fv(color[0]);
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104 glVertex3fv(cube[0]);
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105 glColor3fv(color[3]);
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106 glVertex3fv(cube[3]);
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107 glColor3fv(color[4]);
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108 glVertex3fv(cube[4]);
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109
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110 glColor3fv(color[6]);
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111 glVertex3fv(cube[6]);
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112 glColor3fv(color[1]);
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113 glVertex3fv(cube[1]);
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114 glColor3fv(color[2]);
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115 glVertex3fv(cube[2]);
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116 glColor3fv(color[7]);
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117 glVertex3fv(cube[7]);
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118 #else /* flat cube */
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119 glColor3f(1.0, 0.0, 0.0);
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120 glVertex3fv(cube[0]);
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121 glVertex3fv(cube[1]);
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122 glVertex3fv(cube[2]);
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123 glVertex3fv(cube[3]);
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124
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125 glColor3f(0.0, 1.0, 0.0);
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126 glVertex3fv(cube[3]);
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127 glVertex3fv(cube[4]);
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128 glVertex3fv(cube[7]);
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129 glVertex3fv(cube[2]);
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130
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131 glColor3f(0.0, 0.0, 1.0);
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132 glVertex3fv(cube[0]);
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133 glVertex3fv(cube[5]);
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134 glVertex3fv(cube[6]);
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135 glVertex3fv(cube[1]);
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136
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137 glColor3f(0.0, 1.0, 1.0);
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138 glVertex3fv(cube[5]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
139 glVertex3fv(cube[4]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
140 glVertex3fv(cube[7]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
141 glVertex3fv(cube[6]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
142
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
143 glColor3f(1.0, 1.0, 0.0);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
144 glVertex3fv(cube[5]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
145 glVertex3fv(cube[0]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
146 glVertex3fv(cube[3]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
147 glVertex3fv(cube[4]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
148
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
149 glColor3f(1.0, 0.0, 1.0);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
150 glVertex3fv(cube[6]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
151 glVertex3fv(cube[1]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
152 glVertex3fv(cube[2]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
153 glVertex3fv(cube[7]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
154 #endif /* SHADED_CUBE */
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
155
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
156 glEnd();
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
157
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
158 glMatrixMode(GL_MODELVIEW);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
159 glRotatef(5.0, 1.0, 1.0, 1.0);
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 }
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 int
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
163 main(int argc, char *argv[])
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 {
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
165 int fsaa, accel;
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
166 int value;
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
167 int i, done;
1967
01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
168 SDL_DisplayMode mode;
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
169 SDL_Event event;
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
170 Uint32 then, now, frames;
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
171 int status;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
173 /* Initialize parameters */
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
174 fsaa = 0;
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
175 accel = -1;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
177 /* Initialize test framework */
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
178 state = CommonCreateState(argv, SDL_INIT_VIDEO);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
179 if (!state) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
180 return 1;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
182 for (i = 1; i < argc;) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
183 int consumed;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
185 consumed = CommonArg(state, i);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
186 if (consumed == 0) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
187 if (SDL_strcasecmp(argv[i], "--fsaa") == 0) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
188 ++fsaa;
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
189 consumed = 1;
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
190 } else if (SDL_strcasecmp(argv[i], "--accel") == 0 && i+1 < argc) {
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
191 accel = atoi(argv[i+1]);
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
192 consumed = 2;
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
193 } else {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
194 consumed = -1;
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
195 }
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
196 }
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
197 if (consumed < 0) {
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
198 fprintf(stderr, "Usage: %s %s [--fsaa] [--accel n]\n", argv[0],
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
199 CommonUsage(state));
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
200 quit(1);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
201 }
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
202 i += consumed;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 }
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
205 /* Set OpenGL parameters */
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
206 state->window_flags |= SDL_WINDOW_OPENGL;
3408
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
207 state->gl_red_size = 5;
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
208 state->gl_green_size = 5;
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
209 state->gl_blue_size = 5;
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
210 state->gl_depth_size = 16;
3418
fba883490f72 Fixed compile error
Sam Lantinga <slouken@libsdl.org>
parents: 3408
diff changeset
211 state->gl_double_buffer = 1;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 if (fsaa) {
3408
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
213 state->gl_multisamplebuffers = 1;
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
214 state->gl_multisamplesamples = fsaa;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 }
3571
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
216 if (accel >= 0) {
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
217 state->gl_accelerated = accel;
19691cebb866 Default to allow either accelerated or not
Sam Lantinga <slouken@libsdl.org>
parents: 3570
diff changeset
218 }
3408
55541ddf13e3 Support for GL initialization parameters has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3139
diff changeset
219
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
220 if (!CommonInit(state)) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
221 quit(2);
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
223
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
224 /* Create OpenGL context */
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
225 context = SDL_GL_CreateContext(state->windows[0]);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
226 if (!context) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
227 fprintf(stderr, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
228 quit(2);
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
229 }
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1914
diff changeset
230
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
231 if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 SDL_GL_SetSwapInterval(1);
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 } else {
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 SDL_GL_SetSwapInterval(0);
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 }
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236
1967
01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
237 SDL_GetCurrentDisplayMode(&mode);
01e29c3e9a29 In general, fill in pointers to structures, rather than return them.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
238 printf("Screen BPP: %d\n", SDL_BITSPERPIXEL(mode.format));
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 printf("\n");
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 printf("Vendor : %s\n", glGetString(GL_VENDOR));
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 printf("Renderer : %s\n", glGetString(GL_RENDERER));
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 printf("Version : %s\n", glGetString(GL_VERSION));
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 printf("Extensions : %s\n", glGetString(GL_EXTENSIONS));
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 printf("\n");
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
246 status = SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
247 if (!status) {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
248 printf("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
249 } else {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
250 printf("Failed to get SDL_GL_RED_SIZE: %s\n", SDL_GetError());
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
251 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
252 status = SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
253 if (!status) {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
254 printf("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
255 } else {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
256 printf("Failed to get SDL_GL_GREEN_SIZE: %s\n", SDL_GetError());
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
257 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
258 status = SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
259 if (!status) {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
260 printf("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
261 } else {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
262 printf("Failed to get SDL_GL_BLUE_SIZE: %s\n", SDL_GetError());
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
263 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
264 status = SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
265 if (!status) {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
266 printf("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
267 } else {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
268 printf("Failed to get SDL_GL_DEPTH_SIZE: %s\n", SDL_GetError());
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
269 }
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 if (fsaa) {
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
271 status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
272 if (!status) {
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
273 printf("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
274 } else {
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
275 printf("Failed to get SDL_GL_MULTISAMPLEBUFFERS: %s\n",
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
276 SDL_GetError());
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
277 }
3139
Sam Lantinga <slouken@libsdl.org>
parents: 3099
diff changeset
278 status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
3099
82e60908fab1 Date: Mon, 23 Mar 2009 09:17:24 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 2328
diff changeset
279 if (!status) {
3139
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280 printf("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
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281 value);
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282 } else {
3139
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283 printf("Failed to get SDL_GL_MULTISAMPLESAMPLES: %s\n",
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284 SDL_GetError());
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285 }
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286 }
3571
19691cebb866 Default to allow either accelerated or not
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287 if (accel >= 0) {
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288 status = SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
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289 if (!status) {
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290 printf("SDL_GL_ACCELERATED_VISUAL: requested %d, got %d\n", accel,
19691cebb866 Default to allow either accelerated or not
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291 value);
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292 } else {
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293 printf("Failed to get SDL_GL_ACCELERATED_VISUAL: %s\n",
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294 SDL_GetError());
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295 }
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296 }
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297
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298 /* Set rendering settings */
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299 glMatrixMode(GL_PROJECTION);
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300 glLoadIdentity();
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301 glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
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302 glMatrixMode(GL_MODELVIEW);
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303 glLoadIdentity();
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304 glEnable(GL_DEPTH_TEST);
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305 glDepthFunc(GL_LESS);
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306 glShadeModel(GL_SMOOTH);
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307
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308 /* Main render loop */
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309 frames = 0;
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310 then = SDL_GetTicks();
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311 done = 0;
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312 while (!done) {
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313 /* Check for events */
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314 ++frames;
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diff changeset
315 while (SDL_PollEvent(&event)) {
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316 CommonEvent(state, &event, &done);
1914
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317 }
1915
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318 for (i = 0; i < state->num_windows; ++i) {
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319 int w, h;
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320 SDL_GL_MakeCurrent(state->windows[i], context);
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321 SDL_GetWindowSize(state->windows[i], &w, &h);
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322 glViewport(0, 0, w, h);
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
323 Render();
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
324 SDL_GL_SwapWindow(state->windows[i]);
1914
051df511279c Added a test program framework for easy initialization.
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325 }
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
326 }
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
327
1915
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diff changeset
328 /* Print out some timing information */
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
329 now = SDL_GetTicks();
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
330 if (now > then) {
a228436a2404 Implemented multi-window OpenGL program with test framework.
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parents: 1914
diff changeset
331 printf("%2.2f frames per second\n",
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
332 ((double) frames * 1000) / (now - then));
1914
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parents:
diff changeset
333 }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
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diff changeset
334 quit(0);
2232
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parents: 2228
diff changeset
335 return 0;
1914
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
336 }
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
337
051df511279c Added a test program framework for easy initialization.
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parents:
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338 #else /* HAVE_OPENGL */
051df511279c Added a test program framework for easy initialization.
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339
051df511279c Added a test program framework for easy initialization.
Sam Lantinga <slouken@libsdl.org>
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340 int
051df511279c Added a test program framework for easy initialization.
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341 main(int argc, char *argv[])
051df511279c Added a test program framework for easy initialization.
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342 {
051df511279c Added a test program framework for easy initialization.
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343 printf("No OpenGL support on this system\n");
051df511279c Added a test program framework for easy initialization.
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344 return 1;
051df511279c Added a test program framework for easy initialization.
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parents:
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345 }
051df511279c Added a test program framework for easy initialization.
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parents:
diff changeset
346
051df511279c Added a test program framework for easy initialization.
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diff changeset
347 #endif /* HAVE_OPENGL */