Attachment 136625 Details for Bug 104546 – a simple test case

a simple test case

test.c (text/x-csrc), 3.10 KB, created by xinghua on 2018-01-09 06:49:28 UTC

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Creator: xinghua

Created: 2018-01-09 06:49:28 UTC

Size: 3.10 KB

patch

obsolete

>// -- Written in C -- //
>#include<stdio.h>
>#include<stdlib.h>
>#include<epoxy/gl.h>
>#include<epoxy/glx.h>
>#include<X11/X.h>
>#include<X11/Xlib.h>
>/*#include<GL/gl.h>
>#include<GL/glx.h>*/
>
>Display                 *dpy;
>Window                  root;
>GLint                   att[] = { GLX_RGBA, GLX_DEPTH_SIZE, 24, GLX_DOUBLEBUFFER, None };
>XVisualInfo             *vi;
>Colormap                cmap;
>XSetWindowAttributes    swa;
>Window                  win, win1;
>GLXContext              glc;
>XWindowAttributes       gwa;
>XEvent                  xev;
>                   
>int main(int argc, char *argv[]) {
>  dpy = XOpenDisplay(NULL);
>  if(dpy == NULL) {
>     printf("\n\tcannot connect to X server\n\n");
>     exit(0);
>  }
>                                                
>  root = DefaultRootWindow(dpy);
>  vi = glXChooseVisual(dpy, 0, att);
>  if(vi == NULL) {
>     printf("\n\tno appropriate visual found\n\n");
>     exit(0);
>  } 
>  else {
>     printf("\n\tvisual %p selected\n", (void *)vi->visualid); /* %p creates hexadecimal output like in glxinfo */
>  }
>
>  cmap = XCreateColormap(dpy, root, vi->visual, AllocNone);
>  swa.colormap = cmap;
>  swa.event_mask = ExposureMask | KeyPressMask;
>  win = XCreateWindow(dpy, root, 0, 0, 600, 600, 0, vi->depth, InputOutput, vi->visual, CWColormap | CWEventMask, &swa);
>  XMapWindow(dpy, win);
>  XStoreName(dpy, win, "VERY SIMPLE APPLICATION");
>  glc = glXCreateContext(dpy, vi, NULL, GL_TRUE);
>  glXMakeCurrent(dpy, win, glc);
>  glEnable(GL_DEPTH_TEST);
>  win1 = XCreateWindow(dpy, root, 0, 0, 800, 800, 0, vi->depth, InputOutput, vi->visual, CWColormap | CWEventMask, &swa);
>  glXMakeCurrent(dpy, win1, glc);
>  const char *csSource ="#version 310 es\n"
>                        "layout(local_size_x=1) in;\n"
>                        "layout(r32ui, binding = 0) writeonly uniform highp uimage2D uImage;\n"
>                        "void main()\n"
>                        "{\n"
>                        "    imageStore(uImage, ivec2(gl_LocalInvocationIndex, gl_WorkGroupID.x), uvec4(100, 0, 0, 0));\n"
>                        "}";
>  GLuint program = glCreateProgram();
>  GLuint shader = glCreateShader(GL_COMPUTE_SHADER);
>
>  glShaderSource(shader, 1, &csSource, NULL);
>  glCompileShader(shader);
>  GLint compileStatus;
>  glGetShaderiv(shader, GL_COMPILE_STATUS, &compileStatus);
>  if (compileStatus == 0)
>  {
>      printf("Compile failed.\n");
>      exit(0);
>  }
>  glAttachShader(program, shader);
>  glLinkProgram(program);
>  GLint linkStatus;
>  glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
>  if (linkStatus == 0)
>  {
>     printf("Link failed.\n");
>     exit(0);
>  }
>  glUseProgram(program);
>  GLuint inputValues[] = {200, 200, 200, 200, 200, 200, 200, 200};
>  GLuint texture = 0;
>  glGenTextures(1, &texture);
>  glBindTexture(GL_TEXTURE_2D, texture);
>  glTexStorage2D(GL_TEXTURE_2D, 1, GL_R32UI, 4, 2);
>  glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 4, 2, GL_RED_INTEGER,GL_UNSIGNED_INT, inputValues);
>  glBindImageTexture(0, texture, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_R32UI);
>  glDispatchCompute(1, 2, 1);
>  glXMakeCurrent(dpy, None, NULL);
>  glXDestroyContext(dpy, glc);
>  XDestroyWindow(dpy, win);
>  XCloseDisplay(dpy);
>  exit(0);
>}

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Attachments on bug 104546: 136625 | 136746

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