From 68fc4b415e322f6744299e39864fbc377c6eff74 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Fri, 21 May 2010 09:32:38 -0700 Subject: Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos. The remaining programs are ones I've had difficulty finding a build environment for to make the build system or are unit tests that should probably live next to their code instead. Hopefully people can bring over the build for remaining pieces they care about. --- progs/glsl/convolutions.c | 470 ---------------------------------------------- 1 file changed, 470 deletions(-) delete mode 100644 progs/glsl/convolutions.c (limited to 'progs/glsl/convolutions.c') diff --git a/progs/glsl/convolutions.c b/progs/glsl/convolutions.c deleted file mode 100644 index fdfaf568a25..00000000000 --- a/progs/glsl/convolutions.c +++ /dev/null @@ -1,470 +0,0 @@ -/** - * Convolution with GLSL. - * Note: uses GL_ARB_shader_objects, GL_ARB_vertex_shader, GL_ARB_fragment_shader, - * not the OpenGL 2.0 shader API. - * Author: Zack Rusin - */ - -#include - -#define GL_GLEXT_PROTOTYPES -#include "readtex.h" - -#include -#include -#include -#include -#include - -enum Filter { - GAUSSIAN_BLUR, - SHARPEN, - MEAN_REMOVAL, - EMBOSS, - EDGE_DETECT, - NO_FILTER, - LAST -}; -#define QUIT LAST - -struct BoundingBox { - float minx, miny, minz; - float maxx, maxy, maxz; -}; -struct Texture { - GLuint id; - GLfloat x; - GLfloat y; - GLint width; - GLint height; - GLenum format; -}; - -static const char *textureLocation = "../images/girl2.rgb"; - -static GLfloat viewRotx = 0.0, viewRoty = 0.0, viewRotz = 0.0; -static struct BoundingBox box; -static struct Texture texture; -static GLuint program; -static GLint menuId; -static enum Filter filter = GAUSSIAN_BLUR; - - -static void checkError(int line) -{ - GLenum err = glGetError(); - if (err) { - printf("GL Error %s (0x%x) at line %d\n", - gluErrorString(err), (int) err, line); - } -} - -static void loadAndCompileShader(GLuint shader, const char *text) -{ - GLint stat; - - glShaderSource(shader, 1, (const GLchar **) &text, NULL); - - glCompileShader(shader); - - glGetShaderiv(shader, GL_COMPILE_STATUS, &stat); - if (!stat) { - GLchar log[1000]; - GLsizei len; - glGetShaderInfoLog(shader, 1000, &len, log); - fprintf(stderr, "Problem compiling shader: %s\n", log); - exit(1); - } - else { - printf("Shader compiled OK\n"); - } -} - -static void readShader(GLuint shader, const char *filename) -{ - const int max = 100*1000; - int n; - char *buffer = (char*) malloc(max); - FILE *f = fopen(filename, "r"); - if (!f) { - fprintf(stderr, "Unable to open shader file %s\n", filename); - exit(1); - } - - n = fread(buffer, 1, max, f); - printf("Read %d bytes from shader file %s\n", n, filename); - if (n > 0) { - buffer[n] = 0; - loadAndCompileShader(shader, buffer); - } - - fclose(f); - free(buffer); -} - - -static void -checkLink(GLuint prog) -{ - GLint stat; - glGetProgramiv(prog, GL_LINK_STATUS, &stat); - if (!stat) { - GLchar log[1000]; - GLsizei len; - glGetProgramInfoLog(prog, 1000, &len, log); - fprintf(stderr, "Linker error:\n%s\n", log); - } - else { - fprintf(stderr, "Link success!\n"); - } -} - -static void fillConvolution(GLint *k, - GLfloat *scale, - GLfloat *color) -{ - switch(filter) { - case GAUSSIAN_BLUR: - k[0] = 1; k[1] = 2; k[2] = 1; - k[3] = 2; k[4] = 4; k[5] = 2; - k[6] = 1; k[7] = 2; k[8] = 1; - - *scale = 1./16.; - break; - case SHARPEN: - k[0] = 0; k[1] = -2; k[2] = 0; - k[3] = -2; k[4] = 11; k[5] = -2; - k[6] = 0; k[7] = -2; k[8] = 0; - - *scale = 1./3.; - break; - case MEAN_REMOVAL: - k[0] = -1; k[1] = -1; k[2] = -1; - k[3] = -1; k[4] = 9; k[5] = -1; - k[6] = -1; k[7] = -1; k[8] = -1; - - *scale = 1./1.; - break; - case EMBOSS: - k[0] = -1; k[1] = 0; k[2] = -1; - k[3] = 0; k[4] = 4; k[5] = 0; - k[6] = -1; k[7] = 0; k[8] = -1; - - *scale = 1./1.; - color[0] = 0.5; - color[1] = 0.5; - color[2] = 0.5; - color[3] = 0.5; - break; - case EDGE_DETECT: - k[0] = 1; k[1] = 1; k[2] = 1; - k[3] = 0; k[4] = 0; k[5] = 0; - k[6] = -1; k[7] = -1; k[8] = -1; - - *scale = 1.; - color[0] = 0.5; - color[1] = 0.5; - color[2] = 0.5; - color[3] = 0.5; - break; - case NO_FILTER: - k[0] = 0; k[1] = 0; k[2] = 0; - k[3] = 0; k[4] = 1; k[5] = 0; - k[6] = 0; k[7] = 0; k[8] = 0; - - *scale = 1.; - break; - default: - assert(!"Unhandled switch value"); - } -} - -static void setupConvolution() -{ - GLint *kernel = (GLint*)malloc(sizeof(GLint) * 9); - GLfloat scale = 0.0; - GLfloat *vecKer = (GLfloat*)malloc(sizeof(GLfloat) * 9 * 4); - GLuint loc; - GLuint i; - GLfloat baseColor[4]; - baseColor[0] = 0; - baseColor[1] = 0; - baseColor[2] = 0; - baseColor[3] = 0; - - fillConvolution(kernel, &scale, baseColor); - /*vector of 4*/ - for (i = 0; i < 9; ++i) { - vecKer[i*4 + 0] = kernel[i]; - vecKer[i*4 + 1] = kernel[i]; - vecKer[i*4 + 2] = kernel[i]; - vecKer[i*4 + 3] = kernel[i]; - } - - loc = glGetUniformLocationARB(program, "KernelValue"); - glUniform4fv(loc, 9, vecKer); - loc = glGetUniformLocationARB(program, "ScaleFactor"); - glUniform4f(loc, scale, scale, scale, scale); - loc = glGetUniformLocationARB(program, "BaseColor"); - glUniform4f(loc, baseColor[0], baseColor[1], - baseColor[2], baseColor[3]); - - free(vecKer); - free(kernel); -} - -static void createProgram(const char *vertProgFile, - const char *fragProgFile) -{ - GLuint fragShader = 0, vertShader = 0; - - program = glCreateProgram(); - if (vertProgFile) { - vertShader = glCreateShader(GL_VERTEX_SHADER); - readShader(vertShader, vertProgFile); - glAttachShader(program, vertShader); - } - - if (fragProgFile) { - fragShader = glCreateShader(GL_FRAGMENT_SHADER); - readShader(fragShader, fragProgFile); - glAttachShader(program, fragShader); - } - - glLinkProgram(program); - checkLink(program); - - glUseProgram(program); - - /* - assert(glIsProgram(program)); - assert(glIsShader(fragShader)); - assert(glIsShader(vertShader)); - */ - - checkError(__LINE__); - {/*texture*/ - GLuint texLoc = glGetUniformLocationARB(program, "srcTex"); - glUniform1iARB(texLoc, 0); - } - {/*setup offsets */ - float offsets[] = { 1.0 / texture.width, 1.0 / texture.height, - 0.0 , 1.0 / texture.height, - -1.0 / texture.width, 1.0 / texture.height, - 1.0 / texture.width, 0.0, - 0.0 , 0.0, - -1.0 / texture.width, 0.0, - 1.0 / texture.width, -1.0 / texture.height, - 0.0 , -1.0 / texture.height, - -1.0 / texture.width, -1.0 / texture.height }; - GLuint offsetLoc = glGetUniformLocationARB(program, "Offset"); - glUniform2fv(offsetLoc, 9, offsets); - } - setupConvolution(); - - checkError(__LINE__); -} - - -static void readTexture(const char *filename) -{ - GLubyte *data; - - texture.x = 0; - texture.y = 0; - - glGenTextures(1, &texture.id); - glBindTexture(GL_TEXTURE_2D, texture.id); - glTexParameteri(GL_TEXTURE_2D, - GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, - GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); - glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - data = LoadRGBImage(filename, &texture.width, &texture.height, - &texture.format); - if (!data) { - printf("Error: couldn't load texture image '%s'\n", filename); - exit(1); - } - printf("Texture %s (%d x %d)\n", - filename, texture.width, texture.height); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, - texture.width, texture.height, 0, texture.format, - GL_UNSIGNED_BYTE, data); -} - -static void menuSelected(int entry) -{ - switch (entry) { - case QUIT: - exit(0); - break; - default: - filter = (enum Filter)entry; - } - setupConvolution(); - - glutPostRedisplay(); -} - -static void menuInit() -{ - menuId = glutCreateMenu(menuSelected); - - glutAddMenuEntry("Gaussian blur", GAUSSIAN_BLUR); - glutAddMenuEntry("Sharpen", SHARPEN); - glutAddMenuEntry("Mean removal", MEAN_REMOVAL); - glutAddMenuEntry("Emboss", EMBOSS); - glutAddMenuEntry("Edge detect", EDGE_DETECT); - glutAddMenuEntry("None", NO_FILTER); - - glutAddMenuEntry("Quit", QUIT); - - glutAttachMenu(GLUT_RIGHT_BUTTON); -} - -static void init() -{ - if (!glutExtensionSupported("GL_ARB_shader_objects") || - !glutExtensionSupported("GL_ARB_vertex_shader") || - !glutExtensionSupported("GL_ARB_fragment_shader")) { - fprintf(stderr, "Sorry, this program requires GL_ARB_shader_objects, GL_ARB_vertex_shader, and GL_ARB_fragment_shader\n"); - exit(1); - } - - fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); - - menuInit(); - readTexture(textureLocation); - createProgram("convolution.vert", "convolution.frag"); - - glEnable(GL_TEXTURE_2D); - glClearColor(1.0, 1.0, 1.0, 1.0); - /*glShadeModel(GL_SMOOTH);*/ - glShadeModel(GL_FLAT); -} - -static void reshape(int width, int height) -{ - glViewport(0, 0, width, height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - box.minx = 0; - box.maxx = width; - box.miny = 0; - box.maxy = height; - box.minz = 0; - box.maxz = 1; - glOrtho(box.minx, box.maxx, box.miny, box.maxy, -999999, 999999); - glMatrixMode(GL_MODELVIEW); -} - -static void keyPress(unsigned char key, int x, int y) -{ - switch(key) { - case 27: - exit(0); - default: - break; - } - glutPostRedisplay(); -} - -static void -special(int k, int x, int y) -{ - switch (k) { - case GLUT_KEY_UP: - viewRotx += 2.0; - break; - case GLUT_KEY_DOWN: - viewRotx -= 2.0; - break; - case GLUT_KEY_LEFT: - viewRoty += 2.0; - break; - case GLUT_KEY_RIGHT: - viewRoty -= 2.0; - break; - default: - return; - } - glutPostRedisplay(); -} - - -static void draw() -{ - GLfloat center[2]; - GLfloat anchor[2]; - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glLoadIdentity(); - glPushMatrix(); - - center[0] = box.maxx/2; - center[1] = box.maxy/2; - anchor[0] = center[0] - texture.width/2; - anchor[1] = center[1] - texture.height/2; - - glTranslatef(center[0], center[1], 0); - glRotatef(viewRotx, 1.0, 0.0, 0.0); - glRotatef(viewRoty, 0.0, 1.0, 0.0); - glRotatef(viewRotz, 0.0, 0.0, 1.0); - glTranslatef(-center[0], -center[1], 0); - - glTranslatef(anchor[0], anchor[1], 0); - glBegin(GL_TRIANGLE_STRIP); - { - glColor3f(1., 0., 0.); - glTexCoord2f(0, 0); - glVertex3f(0, 0, 0); - - glColor3f(0., 1., 0.); - glTexCoord2f(0, 1.0); - glVertex3f(0, texture.height, 0); - - glColor3f(1., 0., 0.); - glTexCoord2f(1.0, 0); - glVertex3f(texture.width, 0, 0); - - glColor3f(0., 1., 0.); - glTexCoord2f(1, 1); - glVertex3f(texture.width, texture.height, 0); - } - glEnd(); - - glPopMatrix(); - - glutSwapBuffers(); -} - -int main(int argc, char **argv) -{ - glutInit(&argc, argv); - - glutInitWindowSize(400, 400); - glutInitDisplayMode(GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE); - - if (!glutCreateWindow("Image Convolutions")) { - fprintf(stderr, "Couldn't create window!\n"); - exit(1); - } - - glewInit(); - init(); - - glutReshapeFunc(reshape); - glutKeyboardFunc(keyPress); - glutSpecialFunc(special); - glutDisplayFunc(draw); - - - glutMainLoop(); - return 0; -} -- cgit v1.2.3