--- /dev/null
+/**************************************************************************
+ * Copyright 2012 Intel corporation
+ * 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 THE
+ * AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+
+#include <X11/Xlib.h>
+#include <GL/glew.h>
+#include <GL/gl.h>
+#include <GL/glx.h>
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+int width = 64;
+int height = 64;
+
+static void
+set_2d_projection (void)
+{
+ glMatrixMode (GL_PROJECTION);
+ glLoadIdentity ();
+ glOrtho (0, width, height, 0, 0, 1);
+ glMatrixMode (GL_MODELVIEW);
+}
+
+static void
+draw_fullscreen_quad (void)
+{
+ glBegin (GL_QUADS);
+ glVertex2f (0, 0);
+ glVertex2f (width, 0);
+ glVertex2f (width, height);
+ glVertex2f (0, height);
+ glEnd ();
+}
+
+static void
+draw_fullscreen_textured_quad (void)
+{
+ glBegin (GL_QUADS);
+ glTexCoord2f(0, 0); glVertex2f (0, 0);
+ glTexCoord2f(1, 0); glVertex2f (width, 0);
+ glTexCoord2f(1, 1); glVertex2f (width, height);
+ glTexCoord2f(0, 1); glVertex2f (0, height);
+ glEnd ();
+}
+
+static void
+paint_rgb_using_clear (double r, double g, double b)
+{
+ glClearColor(r, g, b, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+}
+
+static void
+paint_rgb_using_glsl (double r, double g, double b)
+{
+ const char * vs_source =
+ "void main()\n"
+ "{\n"
+ " gl_Position = ftransform();\n"
+ "}\n";
+ const char * fs_source =
+ "#version 120\n"
+ "uniform vec4 color;\n"
+ "void main()\n"
+ "{\n"
+ " gl_FragColor = color;\n"
+ "}\n";
+
+ GLuint vs, fs, program;
+ GLint color;
+
+ vs = glCreateShader (GL_VERTEX_SHADER);
+ glShaderSource (vs, 1, &vs_source, NULL);
+ glCompileShader (vs);
+
+ fs = glCreateShader (GL_FRAGMENT_SHADER);
+ glShaderSource (fs, 1, &fs_source, NULL);
+ glCompileShader (fs);
+
+ program = glCreateProgram ();
+ glAttachShader (program, vs);
+ glAttachShader (program, fs);
+
+ glLinkProgram (program);
+ glUseProgram (program);
+
+ color = glGetUniformLocation (program, "color");
+
+ glUniform4f (color, r, g, b, 1.0);
+
+ draw_fullscreen_quad ();
+
+ glUseProgram (0);
+}
+
+static GLuint
+create_rgb_texture (double r, double g, double b)
+{
+ uint8_t data[3];
+ GLuint texture = 0;
+
+ data[0] = (uint8_t) (255.0 * r);
+ data[1] = (uint8_t) (255.0 * g);
+ data[2] = (uint8_t) (255.0 * b);
+
+ glGenTextures (1, &texture);
+
+ glBindTexture (GL_TEXTURE_2D, texture);
+
+ glTexImage2D (GL_TEXTURE_2D,
+ 0, GL_COMPRESSED_RGBA,
+ 1, 1, 0,
+ GL_RGB, GL_UNSIGNED_BYTE, data);
+
+ return texture;
+}
+
+static void
+paint_using_texture (GLuint texture)
+{
+ glBindTexture (GL_TEXTURE_2D, texture);
+
+ glEnable (GL_TEXTURE_2D);
+
+ draw_fullscreen_textured_quad ();
+
+ glDisable (GL_TEXTURE_2D);
+}
+
+static void
+draw (Display *dpy, Window window, int width, int height)
+{
+#define PASSES 2
+ int i;
+ GLenum glew_err;
+ GLuint texture[PASSES];
+
+ int visual_attr[] = {
+ GLX_RGBA,
+ GLX_RED_SIZE, 8,
+ GLX_GREEN_SIZE, 8,
+ GLX_BLUE_SIZE, 8,
+ GLX_ALPHA_SIZE, 8,
+ GLX_DOUBLEBUFFER,
+ GLX_DEPTH_SIZE, 24,
+ GLX_STENCIL_SIZE, 8,
+ GLX_X_VISUAL_TYPE, GLX_DIRECT_COLOR,
+ None
+ };
+
+ /* Window and context setup. */
+ XVisualInfo *visual_info = glXChooseVisual(dpy, 0, visual_attr);
+ GLXContext ctx = glXCreateContext(dpy, visual_info, NULL, True);
+ glXMakeCurrent(dpy, window, ctx);
+
+ glew_err = glewInit();
+ if (glew_err != GLEW_OK)
+ {
+ fprintf (stderr, "glewInit failed: %s\n",
+ glewGetErrorString(glew_err));
+ exit (1);
+ }
+
+ glViewport(0, 0, width, height);
+
+ set_2d_projection ();
+
+/* Simply count through some colors, frame by frame. */
+#define RGB(frame) (((frame+1)/4) % 2), (((frame+1)/2) % 2), ((frame+1) % 2)
+
+ int frame = 0;
+ for (i = 0; i < PASSES; i++) {
+
+ /* Frame: Draw a solid frame using glClear. */
+ paint_rgb_using_clear (RGB(frame));
+ glXSwapBuffers (dpy, window);
+ frame++;
+
+ /* Frame: Draw a solid frame using GLSL. */
+ paint_rgb_using_glsl (RGB(frame));
+ glXSwapBuffers (dpy, window);
+ frame++;
+
+ /* Frame: Draw a solid frame using a texture. */
+ texture[i] = create_rgb_texture (RGB(frame));
+ paint_using_texture (texture[i]);
+ glXSwapBuffers (dpy, window);
+ frame++;
+ }
+
+ /* Draw another frame with a re-used texture. */
+ paint_using_texture (texture[0]);
+ glXSwapBuffers (dpy, window);
+ frame++;
+
+ /* Cleanup */
+ glXDestroyContext (dpy, ctx);
+}
+
+static void
+handle_events(Display *dpy, Window window, int width, int height)
+{
+ XEvent xev;
+ KeyCode quit_code = XKeysymToKeycode (dpy, XStringToKeysym("Q"));
+
+ XNextEvent (dpy, &xev);
+
+ while (1) {
+ XNextEvent (dpy, &xev);
+ switch (xev.type) {
+ case KeyPress:
+ if (xev.xkey.keycode == quit_code) {
+ return;
+ }
+ break;
+ case ConfigureNotify:
+ width = xev.xconfigure.width;
+ height = xev.xconfigure.height;
+ break;
+ case Expose:
+ if (xev.xexpose.count == 0) {
+ draw (dpy, window, width, height);
+ return;
+ }
+ break;
+ }
+ }
+}
+
+int
+main (void)
+{
+ Display *dpy;
+ Window window;
+
+ dpy = XOpenDisplay (NULL);
+
+ if (dpy == NULL) {
+ fprintf(stderr, "Failed to open display %s\n",
+ XDisplayName(NULL));
+ return 1;
+ }
+
+ window = XCreateSimpleWindow(dpy, DefaultRootWindow (dpy),
+ 0, 0, width, height, 0,
+ BlackPixel (dpy, DefaultScreen (dpy)),
+ BlackPixel (dpy, DefaultScreen (dpy)));
+
+ XSelectInput(dpy, window,
+ KeyPressMask | StructureNotifyMask | ExposureMask);
+
+ XMapWindow (dpy, window);
+
+ handle_events (dpy, window, width, height);
+
+ XDestroyWindow (dpy, window);
+ XCloseDisplay (dpy);
+
+ return 0;
+}
projects / apitrace-tests / blobdiff