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Diffstat (limited to 'progs/glsl/toyball.c')
| -rw-r--r-- | progs/glsl/toyball.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/progs/glsl/toyball.c b/progs/glsl/toyball.c deleted file mode 100644 index c502f24077..0000000000 --- a/progs/glsl/toyball.c +++ /dev/null @@ -1,221 +0,0 @@ -/** - * "Toy Ball" shader demo. Uses the example shaders from - * chapter 11 of the OpenGL Shading Language "orange" book. - * 16 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 = "CH11-toyball.frag"; -static char *VertProgFile = "CH11-toyball.vert"; - -/* program/shader objects */ -static GLuint fragShader; -static GLuint vertShader; -static GLuint program; - - -static struct uniform_info Uniforms[] = { - { "LightDir", 1, GL_FLOAT_VEC4, { 0.57737, 0.57735, 0.57735, 0.0 }, -1 }, - { "HVector", 1, GL_FLOAT_VEC4, { 0.32506, 0.32506, 0.88808, 0.0 }, -1 }, - { "BallCenter", 1, GL_FLOAT_VEC4, { 0.0, 0.0, 0.0, 1.0 }, -1 }, - { "SpecularColor", 1, GL_FLOAT_VEC4, { 0.4, 0.4, 0.4, 60.0 }, -1 }, - { "Red", 1, GL_FLOAT_VEC4, { 0.6, 0.0, 0.0, 1.0 }, -1 }, - { "Blue", 1, GL_FLOAT_VEC4, { 0.0, 0.3, 0.6, 1.0 }, -1 }, - { "Yellow", 1, GL_FLOAT_VEC4, { 0.6, 0.5, 0.0, 1.0 }, -1 }, - { "HalfSpace0", 1, GL_FLOAT_VEC4, { 1.0, 0.0, 0.0, 0.2 }, -1 }, - { "HalfSpace1", 1, GL_FLOAT_VEC4, { 0.309016994, 0.951056516, 0.0, 0.2 }, -1 }, - { "HalfSpace2", 1, GL_FLOAT_VEC4, { -0.809016994, 0.587785252, 0.0, 0.2 }, -1 }, - { "HalfSpace3", 1, GL_FLOAT_VEC4, { -0.809016994, -0.587785252, 0.0, 0.2 }, -1 }, - { "HalfSpace4", 1, GL_FLOAT_VEC4, { 0.309116994, -0.951056516, 0.0, 0.2 }, -1 }, - { "InOrOutInit", 1, GL_FLOAT, { -3.0, 0, 0, 0 }, -1 }, - { "StripeWidth", 1, GL_FLOAT, { 0.3, 0, 0, 0 }, -1 }, - { "FWidth", 1, GL_FLOAT, { 0.005, 0, 0, 0 }, -1 }, - END_OF_UNIFORMS -}; - -static GLint win = 0; -static GLboolean Anim = GL_FALSE; -static GLfloat TexRot = 0.0; -static GLfloat xRot = 0.0f, yRot = 0.0f, zRot = 0.0f; - - -static void -Idle(void) -{ - TexRot += 2.0; - if (TexRot > 360.0) - TexRot -= 360.0; - glutPostRedisplay(); -} - - -static void -Redisplay(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - 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); - - glMatrixMode(GL_TEXTURE); - glLoadIdentity(); - glRotatef(TexRot, 0.0f, 1.0f, 0.0f); - glMatrixMode(GL_MODELVIEW); - - glutSolidSphere(2.0, 20, 10); - - 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, -15.0f); -} - - -static void -CleanUp(void) -{ - glDeleteShader(fragShader); - glDeleteShader(vertShader); - glDeleteProgram(program); - glutDestroyWindow(win); -} - - -static void -Key(unsigned char key, int x, int y) -{ - const GLfloat step = 2.0; - (void) x; - (void) y; - - switch(key) { - case 'a': - Anim = !Anim; - if (Anim) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 'z': - zRot += step; - break; - case 'Z': - zRot -= step; - break; - case 27: - CleanUp(); - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void -SpecialKey(int key, int x, int y) -{ - const GLfloat step = 2.0; - - (void) x; - (void) y; - - switch(key) { - case GLUT_KEY_UP: - xRot += step; - break; - case GLUT_KEY_DOWN: - xRot -= step; - break; - case GLUT_KEY_LEFT: - yRot -= step; - break; - case GLUT_KEY_RIGHT: - yRot += 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); - - assert(glGetError() == 0); - - glClearColor(0.4f, 0.4f, 0.8f, 0.0f); - - glEnable(GL_DEPTH_TEST); - - 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; -} - |