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Diffstat (limited to 'progs/perf/glmain.c')
| -rw-r--r-- | progs/perf/glmain.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/progs/perf/glmain.c b/progs/perf/glmain.c new file mode 100644 index 0000000000..69cdbce319 --- /dev/null +++ b/progs/perf/glmain.c @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/** + * OpenGL/GLUT common code for perf programs. + * Brian Paul + * 15 Sep 2009 + */ + + +#include <stdio.h> +#include "glmain.h" +#include <GL/glut.h> + + +static int Win; +static GLfloat Xrot = 0, Yrot = 0, Zrot = 0; + + +/** Return time in seconds */ +double +PerfGetTime(void) +{ + return glutGet(GLUT_ELAPSED_TIME) * 0.001; +} + + +void +PerfSwapBuffers(void) +{ + glutSwapBuffers(); +} + + +/** make simple checkerboard texture object */ +GLuint +PerfCheckerTexture(GLsizei width, GLsizei height) +{ + const GLenum filter = GL_NEAREST; + GLubyte *img = (GLubyte *) malloc(width * height * 4); + GLint i, j, k; + GLuint obj; + + k = 0; + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) { + GLubyte color; + if (((i / 8) ^ (j / 8)) & 1) { + color = 0xff; + } + else { + color = 0x0; + } + img[k++] = color; + img[k++] = color; + img[k++] = color; + img[k++] = color; + } + } + + glGenTextures(1, &obj); + glBindTexture(GL_TEXTURE_2D, obj); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, + GL_RGBA, GL_UNSIGNED_BYTE, img); + free(img); + + return obj; +} + + +static GLuint +CompileShader(GLenum type, const char *shader) +{ + GLuint sh; + GLint stat; + + sh = glCreateShader(type); + glShaderSource(sh, 1, (const GLchar **) &shader, NULL); + + glCompileShader(sh); + + glGetShaderiv(sh, GL_COMPILE_STATUS, &stat); + if (!stat) { + GLchar log[1000]; + GLsizei len; + glGetShaderInfoLog(sh, 1000, &len, log); + fprintf(stderr, "Error: problem compiling shader: %s\n", log); + exit(1); + } + + return sh; +} + + +/** Make shader program from given vert/frag shader text */ +GLuint +PerfShaderProgram(const char *vertShader, const char *fragShader) +{ + GLuint prog; + GLint stat; + + { + const char *version = (const char *) glGetString(GL_VERSION); + if ((version[0] != '2' && + version[0] != '3') || version[1] != '.') { + fprintf(stderr, "Error: GL version 2.x or better required\n"); + exit(1); + } + } + + prog = glCreateProgram(); + + if (vertShader) { + GLuint vs = CompileShader(GL_VERTEX_SHADER, vertShader); + glAttachShader(prog, vs); + } + if (fragShader) { + GLuint fs = CompileShader(GL_FRAGMENT_SHADER, fragShader); + glAttachShader(prog, fs); + } + + glLinkProgram(prog); + glGetProgramiv(prog, GL_LINK_STATUS, &stat); + if (!stat) { + GLchar log[1000]; + GLsizei len; + glGetProgramInfoLog(prog, 1000, &len, log); + fprintf(stderr, "Shader link error:\n%s\n", log); + exit(1); + } + + return prog; +} + + +int +PerfReshapeWindow( unsigned w, unsigned h ) +{ + if (glutGet(GLUT_SCREEN_WIDTH) < w || + glutGet(GLUT_SCREEN_HEIGHT) < h) + return 0; + + glutReshapeWindow( w, h ); + glutPostRedisplay(); + return 1; +} + + +GLboolean +PerfExtensionSupported(const char *ext) +{ + return glutExtensionSupported(ext); +} + + +static void +Idle(void) +{ + PerfNextRound(); +} + + +static void +Draw(void) +{ + PerfDraw(); + glutSwapBuffers(); +} + + +static void +Reshape(int width, int height) +{ + WinWidth = width; + WinHeight = 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(0.0, 0.0, -15.0); +} + + +static void +Key(unsigned char key, int x, int y) +{ + const GLfloat step = 3.0; + (void) x; + (void) y; + switch (key) { + case 'z': + Zrot -= step; + break; + case 'Z': + Zrot += step; + break; + case 27: + glutDestroyWindow(Win); + exit(0); + break; + } + glutPostRedisplay(); +} + + +static void +SpecialKey(int key, int x, int y) +{ + const GLfloat step = 3.0; + (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(); +} + + +int +main(int argc, char *argv[]) +{ + glutInit(&argc, argv); + glutInitWindowSize(WinWidth, WinHeight); + glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_STENCIL); + Win = glutCreateWindow(argv[0]); + glewInit(); + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutSpecialFunc(SpecialKey); + glutDisplayFunc(Draw); + glutIdleFunc(Idle); + PerfInit(); + glutMainLoop(); + return 0; +} |