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Diffstat (limited to 'progs/egl/opengles2/tri.c')
| -rw-r--r-- | progs/egl/opengles2/tri.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/progs/egl/opengles2/tri.c b/progs/egl/opengles2/tri.c deleted file mode 100644 index 812dbf031e..0000000000 --- a/progs/egl/opengles2/tri.c +++ /dev/null @@ -1,520 +0,0 @@ -/************************************************************************** - * - * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. - * All Rights Reserved. - * - **************************************************************************/ - -/* - * Draw a triangle with X/EGL and OpenGL ES 2.x - */ - -#define USE_FULL_GL 0 - - - -#include <assert.h> -#include <math.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <X11/Xlib.h> -#include <X11/Xutil.h> -#include <X11/keysym.h> -#if USE_FULL_GL -#include <GL/gl.h> /* use full OpenGL */ -#else -#include <GLES2/gl2.h> /* use OpenGL ES 2.x */ -#endif -#include <EGL/egl.h> - - -#ifndef M_PI -#define M_PI 3.14159265 -#endif - -#define FLOAT_TO_FIXED(X) ((X) * 65535.0) - - - -static GLfloat view_rotx = 0.0, view_roty = 0.0; - -static GLint u_matrix = -1; -static GLint attr_pos = 0, attr_color = 1; - - -static void -make_z_rot_matrix(GLfloat angle, GLfloat *m) -{ - float c = cos(angle * M_PI / 180.0); - float s = sin(angle * M_PI / 180.0); - int i; - for (i = 0; i < 16; i++) - m[i] = 0.0; - m[0] = m[5] = m[10] = m[15] = 1.0; - - m[0] = c; - m[1] = s; - m[4] = -s; - m[5] = c; -} - -static void -make_scale_matrix(GLfloat xs, GLfloat ys, GLfloat zs, GLfloat *m) -{ - int i; - for (i = 0; i < 16; i++) - m[i] = 0.0; - m[0] = xs; - m[5] = ys; - m[10] = zs; - m[15] = 1.0; -} - - -static void -mul_matrix(GLfloat *prod, const GLfloat *a, const GLfloat *b) -{ -#define A(row,col) a[(col<<2)+row] -#define B(row,col) b[(col<<2)+row] -#define P(row,col) p[(col<<2)+row] - GLfloat p[16]; - GLint i; - for (i = 0; i < 4; i++) { - const GLfloat ai0=A(i,0), ai1=A(i,1), ai2=A(i,2), ai3=A(i,3); - P(i,0) = ai0 * B(0,0) + ai1 * B(1,0) + ai2 * B(2,0) + ai3 * B(3,0); - P(i,1) = ai0 * B(0,1) + ai1 * B(1,1) + ai2 * B(2,1) + ai3 * B(3,1); - P(i,2) = ai0 * B(0,2) + ai1 * B(1,2) + ai2 * B(2,2) + ai3 * B(3,2); - P(i,3) = ai0 * B(0,3) + ai1 * B(1,3) + ai2 * B(2,3) + ai3 * B(3,3); - } - memcpy(prod, p, sizeof(p)); -#undef A -#undef B -#undef PROD -} - - -static void -draw(void) -{ - static const GLfloat verts[3][2] = { - { -1, -1 }, - { 1, -1 }, - { 0, 1 } - }; - static const GLfloat colors[3][3] = { - { 1, 0, 0 }, - { 0, 1, 0 }, - { 0, 0, 1 } - }; - GLfloat mat[16], rot[16], scale[16]; - - /* Set modelview/projection matrix */ - make_z_rot_matrix(view_rotx, rot); - make_scale_matrix(0.5, 0.5, 0.5, scale); - mul_matrix(mat, rot, scale); - glUniformMatrix4fv(u_matrix, 1, GL_FALSE, mat); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - { - glVertexAttribPointer(attr_pos, 2, GL_FLOAT, GL_FALSE, 0, verts); - glVertexAttribPointer(attr_color, 3, GL_FLOAT, GL_FALSE, 0, colors); - glEnableVertexAttribArray(attr_pos); - glEnableVertexAttribArray(attr_color); - - glDrawArrays(GL_TRIANGLES, 0, 3); - - glDisableVertexAttribArray(attr_pos); - glDisableVertexAttribArray(attr_color); - } -} - - -/* new window size or exposure */ -static void -reshape(int width, int height) -{ - glViewport(0, 0, (GLint) width, (GLint) height); -} - - -static void -create_shaders(void) -{ - static const char *fragShaderText = - "varying vec4 v_color;\n" - "void main() {\n" - " gl_FragColor = v_color;\n" - "}\n"; - static const char *vertShaderText = - "uniform mat4 modelviewProjection;\n" - "attribute vec4 pos;\n" - "attribute vec4 color;\n" - "varying vec4 v_color;\n" - "void main() {\n" - " gl_Position = modelviewProjection * pos;\n" - " v_color = color;\n" - "}\n"; - - GLuint fragShader, vertShader, program; - GLint stat; - - fragShader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragShader, 1, (const char **) &fragShaderText, NULL); - glCompileShader(fragShader); - glGetShaderiv(fragShader, GL_COMPILE_STATUS, &stat); - if (!stat) { - printf("Error: fragment shader did not compile!\n"); - exit(1); - } - - vertShader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertShader, 1, (const char **) &vertShaderText, NULL); - glCompileShader(vertShader); - glGetShaderiv(vertShader, GL_COMPILE_STATUS, &stat); - if (!stat) { - printf("Error: vertex shader did not compile!\n"); - exit(1); - } - - program = glCreateProgram(); - glAttachShader(program, fragShader); - glAttachShader(program, vertShader); - glLinkProgram(program); - - glGetProgramiv(program, GL_LINK_STATUS, &stat); - if (!stat) { - char log[1000]; - GLsizei len; - glGetProgramInfoLog(program, 1000, &len, log); - printf("Error: linking:\n%s\n", log); - exit(1); - } - - glUseProgram(program); - - if (1) { - /* test setting attrib locations */ - glBindAttribLocation(program, attr_pos, "pos"); - glBindAttribLocation(program, attr_color, "color"); - glLinkProgram(program); /* needed to put attribs into effect */ - } - else { - /* test automatic attrib locations */ - attr_pos = glGetAttribLocation(program, "pos"); - attr_color = glGetAttribLocation(program, "color"); - } - - u_matrix = glGetUniformLocation(program, "modelviewProjection"); - printf("Uniform modelviewProjection at %d\n", u_matrix); - printf("Attrib pos at %d\n", attr_pos); - printf("Attrib color at %d\n", attr_color); -} - - -static void -init(void) -{ - typedef void (*proc)(); - -#if 1 /* test code */ - proc p = eglGetProcAddress("glMapBufferOES"); - assert(p); -#endif - - glClearColor(0.4, 0.4, 0.4, 0.0); - - create_shaders(); -} - - -/* - * Create an RGB, double-buffered X window. - * Return the window and context handles. - */ -static void -make_x_window(Display *x_dpy, EGLDisplay egl_dpy, - const char *name, - int x, int y, int width, int height, - Window *winRet, - EGLContext *ctxRet, - EGLSurface *surfRet) -{ - static const EGLint attribs[] = { - EGL_RED_SIZE, 1, - EGL_GREEN_SIZE, 1, - EGL_BLUE_SIZE, 1, - EGL_DEPTH_SIZE, 1, - EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, - EGL_NONE - }; - static const EGLint ctx_attribs[] = { - EGL_CONTEXT_CLIENT_VERSION, 2, - EGL_NONE - }; - int scrnum; - XSetWindowAttributes attr; - unsigned long mask; - Window root; - Window win; - XVisualInfo *visInfo, visTemplate; - int num_visuals; - EGLContext ctx; - EGLConfig config; - EGLint num_configs; - EGLint vid; - - scrnum = DefaultScreen( x_dpy ); - root = RootWindow( x_dpy, scrnum ); - - if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs)) { - printf("Error: couldn't get an EGL visual config\n"); - exit(1); - } - - assert(config); - assert(num_configs > 0); - - if (!eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &vid)) { - printf("Error: eglGetConfigAttrib() failed\n"); - exit(1); - } - - /* The X window visual must match the EGL config */ - visTemplate.visualid = vid; - visInfo = XGetVisualInfo(x_dpy, VisualIDMask, &visTemplate, &num_visuals); - if (!visInfo) { - printf("Error: couldn't get X visual\n"); - exit(1); - } - - /* window attributes */ - attr.background_pixel = 0; - attr.border_pixel = 0; - attr.colormap = XCreateColormap( x_dpy, root, visInfo->visual, AllocNone); - attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; - mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; - - win = XCreateWindow( x_dpy, root, 0, 0, width, height, - 0, visInfo->depth, InputOutput, - visInfo->visual, mask, &attr ); - - /* set hints and properties */ - { - XSizeHints sizehints; - sizehints.x = x; - sizehints.y = y; - sizehints.width = width; - sizehints.height = height; - sizehints.flags = USSize | USPosition; - XSetNormalHints(x_dpy, win, &sizehints); - XSetStandardProperties(x_dpy, win, name, name, - None, (char **)NULL, 0, &sizehints); - } - -#if USE_FULL_GL /* XXX fix this when eglBindAPI() works */ - eglBindAPI(EGL_OPENGL_API); -#else - eglBindAPI(EGL_OPENGL_ES_API); -#endif - - ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, ctx_attribs ); - if (!ctx) { - printf("Error: eglCreateContext failed\n"); - exit(1); - } - - /* test eglQueryContext() */ - { - EGLint val; - eglQueryContext(egl_dpy, ctx, EGL_CONTEXT_CLIENT_VERSION, &val); - assert(val == 2); - } - - *surfRet = eglCreateWindowSurface(egl_dpy, config, win, NULL); - if (!*surfRet) { - printf("Error: eglCreateWindowSurface failed\n"); - exit(1); - } - - /* sanity checks */ - { - EGLint val; - eglQuerySurface(egl_dpy, *surfRet, EGL_WIDTH, &val); - assert(val == width); - eglQuerySurface(egl_dpy, *surfRet, EGL_HEIGHT, &val); - assert(val == height); - assert(eglGetConfigAttrib(egl_dpy, config, EGL_SURFACE_TYPE, &val)); - assert(val & EGL_WINDOW_BIT); - } - - XFree(visInfo); - - *winRet = win; - *ctxRet = ctx; -} - - -static void -event_loop(Display *dpy, Window win, - EGLDisplay egl_dpy, EGLSurface egl_surf) -{ - while (1) { - int redraw = 0; - XEvent event; - - XNextEvent(dpy, &event); - - switch (event.type) { - case Expose: - redraw = 1; - break; - case ConfigureNotify: - reshape(event.xconfigure.width, event.xconfigure.height); - break; - case KeyPress: - { - char buffer[10]; - int r, code; - code = XLookupKeysym(&event.xkey, 0); - if (code == XK_Left) { - view_roty += 5.0; - } - else if (code == XK_Right) { - view_roty -= 5.0; - } - else if (code == XK_Up) { - view_rotx += 5.0; - } - else if (code == XK_Down) { - view_rotx -= 5.0; - } - else { - r = XLookupString(&event.xkey, buffer, sizeof(buffer), - NULL, NULL); - if (buffer[0] == 27) { - /* escape */ - return; - } - } - } - redraw = 1; - break; - default: - ; /*no-op*/ - } - - if (redraw) { - draw(); - eglSwapBuffers(egl_dpy, egl_surf); - } - } -} - - -static void -usage(void) -{ - printf("Usage:\n"); - printf(" -display <displayname> set the display to run on\n"); - printf(" -info display OpenGL renderer info\n"); -} - - -int -main(int argc, char *argv[]) -{ - const int winWidth = 300, winHeight = 300; - Display *x_dpy; - Window win; - EGLSurface egl_surf; - EGLContext egl_ctx; - EGLDisplay egl_dpy; - char *dpyName = NULL; - GLboolean printInfo = GL_FALSE; - EGLint egl_major, egl_minor; - int i; - const char *s; - - for (i = 1; i < argc; i++) { - if (strcmp(argv[i], "-display") == 0) { - dpyName = argv[i+1]; - i++; - } - else if (strcmp(argv[i], "-info") == 0) { - printInfo = GL_TRUE; - } - else { - usage(); - return -1; - } - } - - x_dpy = XOpenDisplay(dpyName); - if (!x_dpy) { - printf("Error: couldn't open display %s\n", - dpyName ? dpyName : getenv("DISPLAY")); - return -1; - } - - egl_dpy = eglGetDisplay(x_dpy); - if (!egl_dpy) { - printf("Error: eglGetDisplay() failed\n"); - return -1; - } - - if (!eglInitialize(egl_dpy, &egl_major, &egl_minor)) { - printf("Error: eglInitialize() failed\n"); - return -1; - } - - s = eglQueryString(egl_dpy, EGL_VERSION); - printf("EGL_VERSION = %s\n", s); - - s = eglQueryString(egl_dpy, EGL_VENDOR); - printf("EGL_VENDOR = %s\n", s); - - s = eglQueryString(egl_dpy, EGL_EXTENSIONS); - printf("EGL_EXTENSIONS = %s\n", s); - - s = eglQueryString(egl_dpy, EGL_CLIENT_APIS); - printf("EGL_CLIENT_APIS = %s\n", s); - - make_x_window(x_dpy, egl_dpy, - "OpenGL ES 2.x tri", 0, 0, winWidth, winHeight, - &win, &egl_ctx, &egl_surf); - - XMapWindow(x_dpy, win); - if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx)) { - printf("Error: eglMakeCurrent() failed\n"); - return -1; - } - - if (printInfo) { - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); - printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS)); - } - - init(); - - /* Set initial projection/viewing transformation. - * We can't be sure we'll get a ConfigureNotify event when the window - * first appears. - */ - reshape(winWidth, winHeight); - - event_loop(x_dpy, win, egl_dpy, egl_surf); - - eglDestroyContext(egl_dpy, egl_ctx); - eglDestroySurface(egl_dpy, egl_surf); - eglTerminate(egl_dpy); - - - XDestroyWindow(x_dpy, win); - XCloseDisplay(x_dpy); - - return 0; -} |