C++ (Cpp) gst_gl_shader_new_default 예제들

예제 #1

파일: gstglupload.c 프로젝트: craftyjon/gst-plugins-bad

static void
init (gpointer data)
{
  GError *error = NULL;

  shader = gst_gl_shader_new_default (context, &error);
  fail_if (shader == NULL, "failed to create shader object %s", error->message);

  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");
}

예제 #2

파일: gstglshader.c 프로젝트: thaytan/gst-plugins-base

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

  shader = gst_gl_shader_new_default (context, &error);
  fail_unless (shader != NULL);
  fail_unless (error == NULL);

  gst_gl_shader_use (shader);
  gst_gl_context_clear_shader (context);

  gst_object_unref (shader);
}

예제 #3

파일: gstglshader.c 프로젝트: thaytan/gst-plugins-base

static void
_test_get_attribute_location_gl (GstGLContext * context, gpointer data)
{
  GstGLShader *shader;
  GError *error = NULL;
  gint loc;

  shader = gst_gl_shader_new_default (context, &error);

  gst_gl_shader_use (shader);

  loc = gst_gl_shader_get_attribute_location (shader, "a_position");
  fail_unless (loc != -1);
  loc = gst_gl_shader_get_attribute_location (shader, "a_texcoord");
  fail_unless (loc != -1);
  loc = gst_gl_shader_get_attribute_location (shader, "unused_value_1928374");
  fail_unless (loc == -1);

  gst_object_unref (shader);
}

예제 #4

파일: gstglupload.c 프로젝트: luisbg/gst-plugins-bad

static void
init (gpointer data)
{
  const GstGLFuncs *gl = context->gl_vtable;
  GError *error = NULL;

  shader = gst_gl_shader_new_default (context, &error);
  fail_if (shader == NULL, "failed to create shader object %s", error->message);

  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");

  if (!vbo) {
    if (gl->GenVertexArrays) {
      gl->GenVertexArrays (1, &vao);
      gl->BindVertexArray (vao);
    }

    gl->GenBuffers (1, &vbo);
    gl->BindBuffer (GL_ARRAY_BUFFER, vbo);
    gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices,
        GL_STATIC_DRAW);

    gl->GenBuffers (1, &vbo_indices);
    gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, vbo_indices);
    gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices,
        GL_STATIC_DRAW);

    if (gl->GenVertexArrays) {
      _bind_buffer (context);
      gl->BindVertexArray (0);
    }

    gl->BindBuffer (GL_ARRAY_BUFFER, 0);
    gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
  }
}

예제 #5

파일: gstglcontext.c 프로젝트: thaytan/gst-plugins-base

static void
init (gpointer data)
{
  GstGLContext *context = data;
  GError *error = NULL;
  GstVideoInfo v_info;
  GstGLMemoryAllocator *allocator;
  GstGLVideoAllocationParams *params;

  gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, 320, 240);
  allocator = gst_gl_memory_allocator_get_default (context);
  params =
      gst_gl_video_allocation_params_new (context, NULL, &v_info, 0, NULL,
      GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);

  /* has to be called in the thread that is going to use the framebuffer */
  fbo = gst_gl_framebuffer_new_with_default_depth (context, 320, 240);

  fail_if (fbo == NULL, "failed to create framebuffer object");

  gl_tex =
      (GstGLMemory *) gst_gl_base_memory_alloc ((GstGLBaseMemoryAllocator *)
      allocator, (GstGLAllocationParams *) params);
  gl_tex2 =
      (GstGLMemory *) gst_gl_base_memory_alloc ((GstGLBaseMemoryAllocator *)
      allocator, (GstGLAllocationParams *) params);
  gst_object_unref (allocator);
  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
  fail_if (gl_tex == NULL, "failed to create texture");

  shader = gst_gl_shader_new_default (context, &error);
  fail_if (shader == NULL, "failed to create shader object: %s",
      error->message);

  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");
}

예제 #6

파일: gstglcolorscale.c 프로젝트: CogentEmbedded/gst-plugins-bad

static gboolean
gst_gl_colorscale_gl_start (GstGLBaseFilter * base_filter)
{
  GstGLColorscale *colorscale = GST_GL_COLORSCALE (base_filter);
  GstGLFilter *filter = GST_GL_FILTER (base_filter);
  GstGLShader *shader;
  GError *error = NULL;

  if (!(shader = gst_gl_shader_new_default (base_filter->context, &error))) {
    GST_ERROR_OBJECT (colorscale, "Failed to initialize shader: %s",
        error->message);
    gst_object_unref (shader);
    return FALSE;
  }

  filter->draw_attr_position_loc =
      gst_gl_shader_get_attribute_location (shader, "a_position");
  filter->draw_attr_texture_loc =
      gst_gl_shader_get_attribute_location (shader, "a_texcoord");

  colorscale->shader = shader;

  return GST_GL_BASE_FILTER_CLASS (parent_class)->gl_start (base_filter);
}

예제 #7

파일: gstgldifferencematte.c 프로젝트: Haifen/gst-plugins-bad

/* init resources that need a gl context */
static void
gst_gl_differencematte_init_gl_resources (GstGLFilter * filter)
{
  GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (filter);
  GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
  const GstGLFuncs *gl = context->gl_vtable;
  GError *error = NULL;
  gint i;

  for (i = 0; i < 4; i++) {
    gl->GenTextures (1, &differencematte->midtexture[i]);
    gl->BindTexture (GL_TEXTURE_2D, differencematte->midtexture[i]);
    gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8,
        GST_VIDEO_INFO_WIDTH (&filter->out_info),
        GST_VIDEO_INFO_HEIGHT (&filter->out_info),
        0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
    gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
  }

  if (!(differencematte->identity_shader =
          gst_gl_shader_new_default (context, &error))) {
    GST_ELEMENT_ERROR (differencematte, RESOURCE, NOT_FOUND, ("%s",
            "Failed to compile identity shader"), ("%s", error->message));
    return;
  }

  if (!(differencematte->shader[0] =
          gst_gl_shader_new_link_with_stages (context, &error,
              gst_glsl_stage_new_default_vertex (context),
              gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
                  GST_GLSL_VERSION_NONE,
                  GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
                  difference_fragment_source), NULL))) {
    GST_ELEMENT_ERROR (differencematte, RESOURCE, NOT_FOUND, ("%s",
            "Failed to compile difference shader"), ("%s", error->message));
    return;
  }

  if (!(differencematte->shader[1] =
          gst_gl_shader_new_link_with_stages (context, &error,
              gst_glsl_stage_new_default_vertex (context),
              gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
                  GST_GLSL_VERSION_NONE,
                  GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
                  hconv7_fragment_source_gles2), NULL))) {
    GST_ELEMENT_ERROR (differencematte, RESOURCE, NOT_FOUND, ("%s",
            "Failed to compile convolution shader"), ("%s", error->message));
    return;
  }

  if (!(differencematte->shader[2] =
          gst_gl_shader_new_link_with_stages (context, &error,
              gst_glsl_stage_new_default_vertex (context),
              gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
                  GST_GLSL_VERSION_NONE,
                  GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
                  vconv7_fragment_source_gles2), NULL))) {
    GST_ELEMENT_ERROR (differencematte, RESOURCE, NOT_FOUND, ("%s",
            "Failed to compile convolution shader"), ("%s", error->message));
    return;
  }

  if (!(differencematte->shader[3] =
          gst_gl_shader_new_link_with_stages (context, &error,
              gst_glsl_stage_new_default_vertex (context),
              gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
                  GST_GLSL_VERSION_NONE,
                  GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
                  texture_interp_fragment_source), NULL))) {
    GST_ELEMENT_ERROR (differencematte, RESOURCE, NOT_FOUND, ("%s",
            "Failed to compile interpolation shader"), ("%s", error->message));
    return;
  }

  /* FIXME: this should really be per shader */
  filter->draw_attr_position_loc =
      gst_gl_shader_get_attribute_location (differencematte->shader[2],
      "a_position");
  filter->draw_attr_texture_loc =
      gst_gl_shader_get_attribute_location (differencematte->shader[2],
      "a_texcoord");
}