diff options
Diffstat (limited to 'progs/demos/glslnoise.c')
| -rwxr-xr-x | progs/demos/glslnoise.c | 188 |
1 files changed, 99 insertions, 89 deletions
diff --git a/progs/demos/glslnoise.c b/progs/demos/glslnoise.c index 463af12897..2adb114e66 100755 --- a/progs/demos/glslnoise.c +++ b/progs/demos/glslnoise.c @@ -1,62 +1,62 @@ /* * GLSL noise demo. - *
- * Michal Krol
+ * + * Michal Krol * 20 February 2006 - *
+ * * Based on the original demo by: * Stefan Gustavson (stegu@itn.liu.se) 2004, 2005 - */
-
-#ifdef WIN32
-#include <windows.h>
+ */ + +#ifdef WIN32 +#include <windows.h> #endif #include <stdio.h> #include <stdlib.h> -#include <GL/gl.h>
-#include <GL/glut.h>
-#include <GL/glext.h>
-
-#ifdef WIN32
-#define GETPROCADDRESS wglGetProcAddress
-#else
-#define GETPROCADDRESS glutGetProcAddress
-#endif
+#include <GL/gl.h> +#include <GL/glut.h> +#include <GL/glext.h> + +#ifdef WIN32 +#define GETPROCADDRESS(F) wglGetProcAddress(F) +#else +#define GETPROCADDRESS(F) glutGetProcAddress(F) +#endif static GLhandleARB fragShader; -static GLhandleARB vertShader;
-static GLhandleARB program;
-
-static GLint uTime;
-
-static GLfloat u_time = 0.0f;
- -static PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB = NULL;
-static PFNGLSHADERSOURCEARBPROC glShaderSourceARB = NULL;
-static PFNGLCOMPILESHADERARBPROC glCompileShaderARB = NULL;
-static PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB = NULL;
-static PFNGLATTACHOBJECTARBPROC glAttachObjectARB = NULL;
-static PFNGLLINKPROGRAMARBPROC glLinkProgramARB = NULL;
-static PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB = NULL;
-static PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB = NULL;
+static GLhandleARB vertShader; +static GLhandleARB program; + +static GLint uTime; + +static GLfloat u_time = 0.0f; + +static PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB = NULL; +static PFNGLSHADERSOURCEARBPROC glShaderSourceARB = NULL; +static PFNGLCOMPILESHADERARBPROC glCompileShaderARB = NULL; +static PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB = NULL; +static PFNGLATTACHOBJECTARBPROC glAttachObjectARB = NULL; +static PFNGLLINKPROGRAMARBPROC glLinkProgramARB = NULL; +static PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB = NULL; +static PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB = NULL; static PFNGLUNIFORM1FARBPROC glUniform1fARB = NULL; static void Redisplay (void) { - glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
+ glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glUniform1fARB (uTime, u_time); glPushMatrix (); - glutSolidSphere (2.0, 20, 10);
+ glutSolidSphere (2.0, 20, 10); glPopMatrix (); glutSwapBuffers(); } static void Idle (void) -{
+{ u_time += 0.1f; glutPostRedisplay (); } @@ -75,9 +75,9 @@ static void Reshape (int width, int height) static void Key (unsigned char key, int x, int y) { (void) x; - (void) y;
+ (void) y; - switch (key)
+ switch (key) { case 27: exit(0); @@ -88,69 +88,79 @@ static void Key (unsigned char key, int x, int y) static void Init (void) { - static const char *fragShaderText =
+ static const char *fragShaderText = "uniform float time;\n" - "void main () {\n"
- " gl_FragColor = gl_Color * vec4 ((0.5 + 0.5 * vec3 (noise1 (\n"
- " vec4 (4.0 * gl_TexCoord[0].xyz, 0.5 * time)))), 1.0);\n"
+ "void main () {\n" + " gl_FragColor = gl_Color * vec4 ((0.5 + 0.5 * vec3 (noise1 (\n" + " vec4 (4.0 * gl_TexCoord[0].xyz, 0.5 * time)))), 1.0);\n" "}\n" ; static const char *vertShaderText = - "void main () {\n"
- " gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
- " gl_TexCoord[0] = gl_Vertex;\n"
- " gl_FrontColor = gl_Color;\n"
+ "void main () {\n" + " gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n" + " gl_TexCoord[0] = gl_Vertex;\n" + " gl_FrontColor = gl_Color;\n" "}\n" ; -
- if (!glutExtensionSupported ("GL_ARB_fragment_shader"))
+ + if (!glutExtensionSupported ("GL_ARB_fragment_shader")) { printf ("Sorry, this demo requires GL_ARB_fragment_shader\n"); exit(1); - }
- if (!glutExtensionSupported ("GL_ARB_shader_objects"))
- {
- printf ("Sorry, this demo requires GL_ARB_shader_objects\n");
- exit(1);
- }
- if (!glutExtensionSupported ("GL_ARB_shading_language_100"))
- {
- printf ("Sorry, this demo requires GL_ARB_shading_language_100\n");
- exit(1);
- }
- if (!glutExtensionSupported ("GL_ARB_vertex_shader"))
- {
- printf ("Sorry, this demo requires GL_ARB_vertex_shader\n");
- exit(1);
} + if (!glutExtensionSupported ("GL_ARB_shader_objects")) + { + printf ("Sorry, this demo requires GL_ARB_shader_objects\n"); + exit(1); + } + if (!glutExtensionSupported ("GL_ARB_shading_language_100")) + { + printf ("Sorry, this demo requires GL_ARB_shading_language_100\n"); + exit(1); + } + if (!glutExtensionSupported ("GL_ARB_vertex_shader")) + { + printf ("Sorry, this demo requires GL_ARB_vertex_shader\n"); + exit(1); + } + + glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) + GETPROCADDRESS("glCreateShaderObjectARB"); + glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) + GETPROCADDRESS("glShaderSourceARB"); + glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) + GETPROCADDRESS("glCompileShaderARB"); + glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) + GETPROCADDRESS("glCreateProgramObjectARB"); + glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) + GETPROCADDRESS("glAttachObjectARB"); + glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) + GETPROCADDRESS ("glLinkProgramARB"); + glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) + GETPROCADDRESS("glUseProgramObjectARB"); - glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) wglGetProcAddress ("glCreateShaderObjectARB");
- glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) wglGetProcAddress ("glShaderSourceARB");
- glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) wglGetProcAddress ("glCompileShaderARB");
- glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) wglGetProcAddress ("glCreateProgramObjectARB");
- glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) wglGetProcAddress ("glAttachObjectARB");
- glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) wglGetProcAddress ("glLinkProgramARB");
- glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) wglGetProcAddress ("glUseProgramObjectARB");
- glGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) GETPROCADDRESS ("glGetUniformLocationARB");
- glUniform1fARB = (PFNGLUNIFORM1FARBPROC) GETPROCADDRESS ("glUniform1fARB");
-
- fragShader = glCreateShaderObjectARB (GL_FRAGMENT_SHADER_ARB);
- glShaderSourceARB (fragShader, 1, &fragShaderText, NULL);
+ glGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) + GETPROCADDRESS("glGetUniformLocationARB"); + glUniform1fARB = (PFNGLUNIFORM1FARBPROC) + GETPROCADDRESS("glUniform1fARB"); + + fragShader = glCreateShaderObjectARB (GL_FRAGMENT_SHADER_ARB); + glShaderSourceARB (fragShader, 1, &fragShaderText, NULL); glCompileShaderARB (fragShader); -
- vertShader = glCreateShaderObjectARB (GL_VERTEX_SHADER_ARB);
- glShaderSourceARB (vertShader, 1, &vertShaderText, NULL);
- glCompileShaderARB (vertShader);
-
- program = glCreateProgramObjectARB ();
- glAttachObjectARB (program, fragShader);
- glAttachObjectARB (program, vertShader);
- glLinkProgramARB (program);
- glUseProgramObjectARB (program);
-
- uTime = glGetUniformLocationARB (program, "time");
- - glClearColor (0.0f, 0.1f, 0.3f, 1.0f);
+ + vertShader = glCreateShaderObjectARB (GL_VERTEX_SHADER_ARB); + glShaderSourceARB (vertShader, 1, &vertShaderText, NULL); + glCompileShaderARB (vertShader); + + program = glCreateProgramObjectARB (); + glAttachObjectARB (program, fragShader); + glAttachObjectARB (program, vertShader); + glLinkProgramARB (program); + glUseProgramObjectARB (program); + + uTime = glGetUniformLocationARB (program, "time"); + + glClearColor (0.0f, 0.1f, 0.3f, 1.0f); glEnable (GL_CULL_FACE); glEnable (GL_DEPTH_TEST); @@ -172,4 +182,4 @@ int main (int argc, char *argv[]) glutMainLoop (); return 0; } -
+ |