C++ (Cpp) gst_gl_shader_compile примеры использования

Пример #1

Файл: gstglimagesink.c Проект: freedesktop-unofficial-mirror/gstreamer__attic__gst-plugins-gl

/* Called in the gl thread */
static void
gst_glimage_sink_thread_init_redisplay (GstGLImageSink * gl_sink)
{
  GError *error = NULL;
  gl_sink->redisplay_shader = gst_gl_shader_new (gl_sink->context);

  gst_gl_shader_set_vertex_source (gl_sink->redisplay_shader,
      redisplay_vertex_shader_str_gles2);
  gst_gl_shader_set_fragment_source (gl_sink->redisplay_shader,
      redisplay_fragment_shader_str_gles2);

  gst_gl_shader_compile (gl_sink->redisplay_shader, &error);
  if (error) {
    gst_gl_context_set_error (gl_sink->context, "%s", error->message);
    g_error_free (error);
    error = NULL;
    gst_gl_context_clear_shader (gl_sink->context);
  } else {
    gl_sink->redisplay_attr_position_loc =
        gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader,
        "a_position");
    gl_sink->redisplay_attr_texture_loc =
        gst_gl_shader_get_attribute_location (gl_sink->redisplay_shader,
        "a_texCoord");
  }
}

Пример #2

Файл: gstglcontext.c Проект: superlou/gst-plugins-bad

static void
init (gpointer data)
{
  GstGLContext *context = data;

  /* has to be called in the thread that is going to use the framebuffer */
  fbo = gst_gl_framebuffer_new (context);

  gst_gl_framebuffer_generate (fbo, 320, 240, &fbo_id, &rbo);
  fail_if (fbo == NULL || fbo_id == 0, "failed to create framebuffer object");

  gst_gl_context_gen_texture (context, &tex, GST_VIDEO_FORMAT_RGBA, 320, 240);
  fail_if (tex == 0, "failed to create texture");

#if GST_GL_HAVE_GLES2
  if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2) {
    shader = gst_gl_shader_new (context);
    fail_if (shader == NULL, "failed to create shader object");

    gst_gl_shader_set_vertex_source (shader, vertex_shader_str_gles2);
    gst_gl_shader_set_fragment_source (shader, fragment_shader_str_gles2);

    error = NULL;
    gst_gl_shader_compile (shader, &error);
    fail_if (error != NULL, "Error compiling shader %s\n",
        error ? error->message : "Unknown Error");

    shader_attr_position_loc =
        gst_gl_shader_get_attribute_location (shader, "a_position");
    shader_attr_texture_loc =
        gst_gl_shader_get_attribute_location (shader, "a_texCoord");
  }
#endif
}

Пример #3

Файл: gstglutils.c Проект: ego5710/gst-plugins-bad

static void
_compile_shader (GstGLContext * context, GstGLShader ** shader)
{
  GError *error = NULL;

  gst_gl_shader_compile (*shader, &error);
  if (error) {
    gst_gl_context_set_error (context, "%s", error->message);
    g_error_free (error);
    error = NULL;
    gst_gl_context_clear_shader (context);
    gst_object_unref (*shader);
    *shader = NULL;
  }
}

Пример #4

Файл: gstglupload.c Проект: superlou/gst-plugins-bad

static void
init (gpointer data)
{
#if GST_GL_HAVE_GLES2
  if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2) {
    shader = gst_gl_shader_new (context);
    fail_if (shader == NULL, "failed to create shader object");

    gst_gl_shader_set_vertex_source (shader, vertex_shader_str_gles2);
    gst_gl_shader_set_fragment_source (shader, fragment_shader_str_gles2);

    error = NULL;
    gst_gl_shader_compile (shader, &error);
    fail_if (error != NULL, "Error compiling shader %s\n",
        error ? error->message : "Unknown Error");

    shader_attr_position_loc =
        gst_gl_shader_get_attribute_location (shader, "a_position");
    shader_attr_texture_loc =
        gst_gl_shader_get_attribute_location (shader, "a_texCoord");
  }
#endif
}