[clutter/wip/cogl2: 2/5] tests: Add a test for clutter_shader_effect_get_program

[Neil Roberts <nroberts src gnome org>]

commit b2f5c5c4935abae818957283da647cf86d350c69
Author: Neil Roberts <neil linux intel com>
Date:   Mon Apr 30 16:01:26 2012 +0100

    tests: Add a test for clutter_shader_effect_get_program
    
    This adds another custom ClutterShaderEffect to the
    actor-shader-effect test that calls clutter_shader_effect_get_program
    to render the shader with its own material. The material has a
    non-default color set to verify that the shader is being used from the
    custom material.

 tests/conform/actor-shader-effect.c |   76 +++++++++++++++++++++++++++++++++++
 1 files changed, 76 insertions(+), 0 deletions(-)
---
diff --git a/tests/conform/actor-shader-effect.c b/tests/conform/actor-shader-effect.c
index db3400b..de0e8be 100644
--- a/tests/conform/actor-shader-effect.c
+++ b/tests/conform/actor-shader-effect.c
@@ -185,6 +185,76 @@ foo_another_new_shader_effect_init (FooAnotherNewShaderEffect *self)
 {
 }
 
+/****************************************************************
+ Shader effect with a manual paint function using
+ clutter_shader_effect_get_program
+ ****************************************************************/
+
+static const gchar
+foo_manual_shader_effect_source[] =
+  "\n"
+  "void\n"
+  "main ()\n"
+  "{\n"
+  "  cogl_color_out = cogl_color_in * vec4 (0.5, 0.5, 0.0, 1.0);\n"
+  "}";
+
+typedef struct _FooManualShaderEffectClass
+{
+  ClutterShaderEffectClass parent_class;
+} FooManualShaderEffectClass;
+
+typedef struct _FooManualShaderEffect
+{
+  ClutterShaderEffect parent;
+} FooManualShaderEffect;
+
+G_DEFINE_TYPE (FooManualShaderEffect,
+               foo_manual_shader_effect,
+               CLUTTER_TYPE_SHADER_EFFECT);
+
+static void
+foo_manual_shader_effect_paint_target (ClutterOffscreenEffect *effect)
+{
+  CoglHandle program;
+  CoglMaterial *material;
+  CoglTexture *texture;
+
+  clutter_shader_effect_set_shader_source (CLUTTER_SHADER_EFFECT (effect),
+                                           foo_manual_shader_effect_source);
+
+  program = clutter_shader_effect_get_program (CLUTTER_SHADER_EFFECT (effect));
+
+  material = cogl_material_new ();
+  cogl_material_set_color4ub (material, 255, 0, 255, 255);
+  cogl_material_set_user_program (material, program);
+
+  texture = clutter_offscreen_effect_get_texture (effect);
+
+  cogl_push_source (material);
+  cogl_rectangle (0.0f, 0.0f,
+                  cogl_texture_get_width (texture),
+                  cogl_texture_get_height (texture));
+  cogl_pop_source ();
+
+  cogl_object_unref (material);
+}
+
+static void
+foo_manual_shader_effect_class_init (FooManualShaderEffectClass *klass)
+{
+  ClutterOffscreenEffectClass *offscreen_effect_class =
+    CLUTTER_OFFSCREEN_EFFECT_CLASS (klass);
+
+  offscreen_effect_class->paint_target =
+    foo_manual_shader_effect_paint_target;
+}
+
+static void
+foo_manual_shader_effect_init (FooManualShaderEffect *self)
+{
+}
+
 /****************************************************************/
 
 static ClutterActor *
@@ -228,6 +298,8 @@ paint_cb (ClutterActor *stage)
   g_assert_cmpint (get_pixel (250, 50), ==, 0xff00ff);
   /* new shader effect */
   g_assert_cmpint (get_pixel (350, 50), ==, 0x00ffff);
+  /* manual shader effect */
+  g_assert_cmpint (get_pixel (450, 50), ==, 0x800000);
 
   clutter_main_quit ();
 }
@@ -259,6 +331,10 @@ actor_shader_effect (TestConformSimpleFixture *fixture,
   clutter_actor_set_x (rect, 300);
   clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
 
+  rect = make_actor (foo_manual_shader_effect_get_type ());
+  clutter_actor_set_x (rect, 400);
+  clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
+
   clutter_actor_show (stage);
 
   g_signal_connect_after (stage, "paint", G_CALLBACK (paint_cb), NULL);