File: webgl_error.cpp

package info (click to toggle)
emscripten 3.1.6~dfsg-5
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 114,112 kB
  • sloc: ansic: 583,052; cpp: 391,943; javascript: 79,361; python: 54,180; sh: 49,997; pascal: 4,658; makefile: 3,426; asm: 2,191; lisp: 1,869; ruby: 488; cs: 142
file content (18 lines) | stat: -rw-r--r-- 491 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
#include <emscripten/html5.h>
#include <assert.h>
#include <GLES2/gl2.h>

int main()
{
  EmscriptenWebGLContextAttributes attr;
  emscripten_webgl_init_context_attributes(&attr);
  EMSCRIPTEN_WEBGL_CONTEXT_HANDLE ctx = emscripten_webgl_create_context("#canvas", &attr);
  assert(ctx);
  emscripten_webgl_make_context_current(ctx);
  assert(!glGetError());
  char p[4];
  glReadPixels(0, 0, 1, 1, 0/*invalid*/, 0/*invalid*/, p);
  assert(glGetError());
  assert(!glGetError());
  return 0;
}