C++ (Cpp) gst_gl_effects_get_fragment_shaderの例

コード例 #1

ファイル: gstgleffectsobel.c プロジェクト: CogentEmbedded/gst-plugins-bad

void
gst_gl_effects_sobel (GstGLEffects * effects)
{
  GstGLFilter *filter = GST_GL_FILTER (effects);
  GstGLShader *shader;

  shader = gst_gl_effects_get_fragment_shader (effects, "desat0",
      desaturate_fragment_source_gles2);
  gst_gl_filter_render_to_target_with_shader (filter, effects->intexture,
      effects->midtexture[0], shader);

  shader = gst_gl_effects_get_fragment_shader (effects, "hconv0",
      sep_sobel_hconv3_fragment_source_gles2);
  gst_gl_shader_use (shader);
  gst_gl_shader_set_uniform_1f (shader, "height",
      GST_VIDEO_INFO_HEIGHT (&filter->out_info));
  gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[0],
      effects->midtexture[1], shader);

  shader = gst_gl_effects_get_fragment_shader (effects, "vconv0",
      sep_sobel_vconv3_fragment_source_gles2);
  gst_gl_shader_use (shader);
  gst_gl_shader_set_uniform_1f (shader, "width",
      GST_VIDEO_INFO_WIDTH (&filter->out_info));
  gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[1],
      effects->midtexture[0], shader);

  shader = gst_gl_effects_get_fragment_shader (effects, "len0",
      sep_sobel_length_fragment_source_gles2);
  gst_gl_shader_use (shader);
  gst_gl_shader_set_uniform_1i (shader, "invert", effects->invert);
  gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[0],
      effects->outtexture, shader);
}

コード例 #2

ファイル: gstgleffecttwirl.c プロジェクト: Haifen/gst-plugins-bad

static void
gst_gl_effects_twirl_callback (gint width, gint height, guint texture,
    gpointer data)
{
  GstGLShader *shader;
  GstGLEffects *effects = GST_GL_EFFECTS (data);
  GstGLFilter *filter = GST_GL_FILTER (effects);
  GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
  GstGLFuncs *gl = context->gl_vtable;

  shader = gst_gl_effects_get_fragment_shader (effects, "twirl",
      twirl_fragment_source_gles2);

  if (!shader)
    return;

#if GST_GL_HAVE_OPENGL
  if (USING_OPENGL (context)) {
    gl->MatrixMode (GL_PROJECTION);
    gl->LoadIdentity ();
  }
#endif

  gst_gl_shader_use (shader);

  gl->ActiveTexture (GL_TEXTURE0);
  gl->BindTexture (GL_TEXTURE_2D, texture);

  gst_gl_shader_set_uniform_1i (shader, "tex", 0);

  gst_gl_filter_draw_texture (filter, texture, width, height);
}

コード例 #3

ファイル: gstgleffectsobel.c プロジェクト: Distrotech/gst-plugins-bad

static void
gst_gl_effects_sobel_callback_vconv (gint width, gint height, guint texture,
    gpointer data)
{
  GstGLShader *shader = NULL;
  GstGLEffects *effects = GST_GL_EFFECTS (data);
  GstGLFilter *filter = GST_GL_FILTER (effects);

  if (NULL != (shader = gst_gl_effects_get_fragment_shader (effects, "vconv0",
              sep_sobel_vconv3_fragment_source_gles2,
              sep_sobel_vconv3_fragment_source_opengl))) {
    GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;

#if GST_GL_HAVE_OPENGL
    if (USING_OPENGL (GST_GL_BASE_FILTER (filter)->context)) {
      gl->MatrixMode (GL_PROJECTION);
      gl->LoadIdentity ();
    }
#endif

    gst_gl_shader_use (shader);

    gl->ActiveTexture (GL_TEXTURE0);
    gl->BindTexture (GL_TEXTURE_2D, texture);

    gst_gl_shader_set_uniform_1i (shader, "tex", 0);
    gst_gl_shader_set_uniform_1f (shader, "height", height);

    gst_gl_filter_draw_texture (filter, texture, width, height);
  }
}

コード例 #4

ファイル: gstgleffectsin.c プロジェクト: CogentEmbedded/gst-plugins-bad

void
gst_gl_effects_sin (GstGLEffects * effects)
{
  GstGLFilter *filter = GST_GL_FILTER (effects);
  GstGLShader *shader;

  shader = gst_gl_effects_get_fragment_shader (effects, "sin",
      sin_fragment_source_gles2);
  gst_gl_filter_render_to_target_with_shader (filter, effects->intexture,
      effects->outtexture, shader);
}