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Diffstat (limited to 'progs/glsl/mandelbrot.c')
-rw-r--r-- | progs/glsl/mandelbrot.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/progs/glsl/mandelbrot.c b/progs/glsl/mandelbrot.c deleted file mode 100644 index b05ef37fae1..00000000000 --- a/progs/glsl/mandelbrot.c +++ /dev/null @@ -1,215 +0,0 @@ -/** - * "Mandelbrot" shader demo. Uses the example shaders from - * chapter 15 (or 18) of the OpenGL Shading Language "orange" book. - * 15 Jan 2007 - */ - -#include <assert.h> -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> -#include "shaderutil.h" - - -static char *FragProgFile = "CH18-mandel.frag"; -static char *VertProgFile = "CH18-mandel.vert"; - -/* program/shader objects */ -static GLuint fragShader; -static GLuint vertShader; -static GLuint program; - - -static struct uniform_info Uniforms[] = { - /* vert */ - { "LightPosition", 1, GL_FLOAT_VEC3, { 0.1, 0.1, 9.0, 0}, -1 }, - { "SpecularContribution", 1, GL_FLOAT, { 0.5, 0, 0, 0 }, -1 }, - { "DiffuseContribution", 1, GL_FLOAT, { 0.5, 0, 0, 0 }, -1 }, - { "Shininess", 1, GL_FLOAT, { 20.0, 0, 0, 0 }, -1 }, - /* frag */ - { "MaxIterations", 1, GL_FLOAT, { 12, 0, 0, 0 }, -1 }, - { "Zoom", 1, GL_FLOAT, { 0.125, 0, 0, 0 }, -1 }, - { "Xcenter", 1, GL_FLOAT, { -1.5, 0, 0, 0 }, -1 }, - { "Ycenter", 1, GL_FLOAT, { .005, 0, 0, 0 }, -1 }, - { "InnerColor", 1, GL_FLOAT_VEC3, { 1, 0, 0, 0 }, -1 }, - { "OuterColor1", 1, GL_FLOAT_VEC3, { 0, 1, 0, 0 }, -1 }, - { "OuterColor2", 1, GL_FLOAT_VEC3, { 0, 0, 1, 0 }, -1 }, - END_OF_UNIFORMS -}; - -static GLint win = 0; - -static GLfloat xRot = 0.0f, yRot = 0.0f, zRot = 0.0f; - -static GLint uZoom, uXcenter, uYcenter; -static GLfloat zoom = 1.0, xCenter = -1.5, yCenter = 0.0; - - -static void -Redisplay(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - /* set interactive uniform parameters */ - glUniform1fv(uZoom, 1, &zoom); - glUniform1fv(uXcenter, 1, &xCenter); - glUniform1fv(uYcenter, 1, &yCenter); - - glPushMatrix(); - glRotatef(xRot, 1.0f, 0.0f, 0.0f); - glRotatef(yRot, 0.0f, 1.0f, 0.0f); - glRotatef(zRot, 0.0f, 0.0f, 1.0f); - - glBegin(GL_POLYGON); - glTexCoord2f(0, 0); glVertex2f(-1, -1); - glTexCoord2f(1, 0); glVertex2f( 1, -1); - glTexCoord2f(1, 1); glVertex2f( 1, 1); - glTexCoord2f(0, 1); glVertex2f(-1, 1); - glEnd(); - - glPopMatrix(); - - glutSwapBuffers(); -} - - -static void -Reshape(int width, int height) -{ - glViewport(0, 0, width, height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0.0f, 0.0f, -6.0f); -} - - -static void -CleanUp(void) -{ - glDeleteShader(fragShader); - glDeleteShader(vertShader); - glDeleteProgram(program); - glutDestroyWindow(win); -} - - -static void -Key(unsigned char key, int x, int y) -{ - (void) x; - (void) y; - - switch(key) { - case 'z': - zoom *= 0.9; - break; - case 'Z': - zoom /= 0.9; - break; - case 27: - CleanUp(); - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void -SpecialKey(int key, int x, int y) -{ - const GLfloat step = 0.1 * zoom; - - (void) x; - (void) y; - - switch(key) { - case GLUT_KEY_UP: - yCenter += step; - break; - case GLUT_KEY_DOWN: - yCenter -= step; - break; - case GLUT_KEY_LEFT: - xCenter -= step; - break; - case GLUT_KEY_RIGHT: - xCenter += step; - break; - } - glutPostRedisplay(); -} - - -static void -Init(void) -{ - if (!ShadersSupported()) - exit(1); - - vertShader = CompileShaderFile(GL_VERTEX_SHADER, VertProgFile); - fragShader = CompileShaderFile(GL_FRAGMENT_SHADER, FragProgFile); - program = LinkShaders(vertShader, fragShader); - - glUseProgram(program); - - SetUniformValues(program, Uniforms); - PrintUniforms(Uniforms); - - uZoom = glGetUniformLocation(program, "Zoom"); - uXcenter = glGetUniformLocation(program, "Xcenter"); - uYcenter = glGetUniformLocation(program, "Ycenter"); - - assert(glGetError() == 0); - - glClearColor(0.4f, 0.4f, 0.8f, 0.0f); - - printf("GL_RENDERER = %s\n",(const char *) glGetString(GL_RENDERER)); - - assert(glIsProgram(program)); - assert(glIsShader(fragShader)); - assert(glIsShader(vertShader)); - - glColor3f(1, 0, 0); -} - - -static void -ParseOptions(int argc, char *argv[]) -{ - int i; - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-fs") == 0) { - FragProgFile = argv[i+1]; - } - else if (strcmp(argv[i], "-vs") == 0) { - VertProgFile = argv[i+1]; - } - } -} - - -int -main(int argc, char *argv[]) -{ - glutInit(&argc, argv); - glutInitWindowSize(400, 400); - glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); - win = glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutSpecialFunc(SpecialKey); - glutDisplayFunc(Redisplay); - ParseOptions(argc, argv); - Init(); - glutMainLoop(); - return 0; -} - |