Cycles: multi GPU rendering support.

The rendering device is now set in User Preferences > System, where you can
choose between OpenCL/CUDA and devices. Per scene you can then still choose
to use CPU or GPU rendering.

Load balancing still needs to be improved, now it just splits the entire
render in two, that will be done in a separate commit.

4 files changed, 104 insertions, 10 deletions

diff --git a/source/blender/makesrna/SConscript b/source/blender/makesrna/SConscript
index 9eea6d83cb9..7eb5d042dd7 100644
--- a/source/blender/makesrna/SConscript
+++ b/source/blender/makesrna/SConscript
@@ -8,7 +8,7 @@ objs += o
 
 incs = '#/intern/guardedalloc #/intern/memutil #/intern/audaspace/intern ../blenkernel ../blenlib ../makesdna intern .'
 incs += ' ../windowmanager ../editors/include ../gpu ../imbuf ../ikplugin ../blenfont ../blenloader'
-incs += ' ../render/extern/include'
+incs += ' ../render/extern/include #/intern/cycles/blender'
 incs += ' ../nodes'
 incs += ' #/extern/glew/include'
 
@@ -58,6 +58,9 @@ if env['WITH_BF_COLLADA']:
 if env['WITH_BF_OCEANSIM']:
     defs.append('WITH_OCEANSIM')
 
+if env['WITH_BF_CYCLES']:
+    defs.append('WITH_CYCLES')
+
 if env['OURPLATFORM'] == 'linux':
     cflags='-pthread'
     incs += ' ../../../extern/binreloc/include'
diff --git a/source/blender/makesrna/intern/CMakeLists.txt b/source/blender/makesrna/intern/CMakeLists.txt
index fd9cd26cbfa..5bbdac646a7 100644
--- a/source/blender/makesrna/intern/CMakeLists.txt
+++ b/source/blender/makesrna/intern/CMakeLists.txt
@@ -143,6 +143,9 @@ set(INC_SYS
 
 )
 
+if(WITH_CYCLES)
+	add_definitions(-DWITH_CYCLES)
+endif()
 
 if(WITH_PYTHON)
 	add_definitions(-DWITH_PYTHON)
@@ -246,6 +249,7 @@ blender_include_dirs(
 	../../editors/include
 	../../render/extern/include
 	../../../../intern/audaspace/intern
+	../../../../intern/cycles/blender
 	../../../../intern/guardedalloc
 	../../../../intern/memutil
 )
diff --git a/source/blender/makesrna/intern/SConscript b/source/blender/makesrna/intern/SConscript
index d710dd06a17..1fc6ed0f130 100644
--- a/source/blender/makesrna/intern/SConscript
+++ b/source/blender/makesrna/intern/SConscript
@@ -33,7 +33,7 @@ incs = '#/intern/guardedalloc ../../blenlib ../../blenkernel ../../blenloader'
 incs += ' ../../imbuf ../../makesdna ../../makesrna ../../ikplugin'
 incs += ' ../../windowmanager ../../editors/include ../../blenfont'
 incs += ' ../../render/extern/include'
-incs += ' #/intern/audaspace/intern '
+incs += ' #/intern/audaspace/intern #/intern/cycles/blender'
 incs += ' #/extern/glew/include '
 
 if env['WITH_BF_OPENEXR']:
@@ -91,6 +91,9 @@ if env['WITH_BF_PYTHON']:
 if env['WITH_BF_COLLADA']:
     defs.append('WITH_COLLADA')
 
+if env['WITH_BF_CYCLES']:
+    defs.append('WITH_CYCLES')
+
 if env['OURPLATFORM'] == 'linux':
     cflags='-pthread'
     incs += ' ../../../extern/binreloc/include'
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 164f8e4f0d0..4564b9f2946 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -46,6 +46,14 @@
 
 #include "BKE_sound.h"
 
+#ifdef WITH_CYCLES
+static EnumPropertyItem compute_device_type_items[] = {
+	{USER_COMPUTE_DEVICE_NONE, "NONE", 0, "None", "Don't use compute device"},
+	{USER_COMPUTE_DEVICE_CUDA, "CUDA", 0, "CUDA", "Use CUDA for GPU acceleration"},
+	{USER_COMPUTE_DEVICE_OPENCL, "OPENCL", 0, "OpenCL", "Use OpenCL for GPU acceleration"},
+	{ 0, NULL, 0, NULL, NULL}};
+#endif
+
 #ifdef RNA_RUNTIME
 
 #include "DNA_object_types.h"
@@ -65,6 +73,8 @@
 
 #include "UI_interface.h"
 
+#include "CCL_api.h"
+
 static void rna_userdef_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *UNUSED(ptr))
 {
 	WM_main_add_notifier(NC_WINDOW, NULL);
@@ -302,6 +312,68 @@ static void rna_userdef_text_update(Main *UNUSED(bmain), Scene *UNUSED(scene), P
 	WM_main_add_notifier(NC_WINDOW, NULL);
 }
 
+#ifdef WITH_CYCLES
+static EnumPropertyItem *rna_userdef_compute_device_type_itemf(bContext *UNUSED(C), PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
+{
+	EnumPropertyItem *item= NULL;
+	int totitem= 0;
+
+	/* add supported device types */
+	RNA_enum_items_add_value(&item, &totitem, compute_device_type_items, USER_COMPUTE_DEVICE_NONE);
+	if(CCL_compute_device_list(0))
+		RNA_enum_items_add_value(&item, &totitem, compute_device_type_items, USER_COMPUTE_DEVICE_CUDA);
+	if(CCL_compute_device_list(1))
+		RNA_enum_items_add_value(&item, &totitem, compute_device_type_items, USER_COMPUTE_DEVICE_OPENCL);
+
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+
+	return item;
+}
+
+static int rna_userdef_compute_device_get(PointerRNA *UNUSED(ptr))
+{
+	if(U.compute_device_type == USER_COMPUTE_DEVICE_NONE)
+		return 0;
+
+	return U.compute_device_id;
+}
+
+static EnumPropertyItem *rna_userdef_compute_device_itemf(bContext *UNUSED(C), PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
+{
+	EnumPropertyItem tmp= {0, "", 0, "", ""};
+	EnumPropertyItem *item= NULL;
+	int totitem= 0;
+	
+	if(U.compute_device_type == USER_COMPUTE_DEVICE_NONE) {
+		/* only add a single CPU device */
+		tmp.value = 0;
+		tmp.name = "CPU";
+		tmp.identifier = "CPU";
+		RNA_enum_item_add(&item, &totitem, &tmp);
+	}
+	else {
+		/* get device list from cycles. it would be good to make this generic
+		   once we have more subsystems using opencl, for now this is easiest */
+		int opencl = (U.compute_device_type == USER_COMPUTE_DEVICE_OPENCL);
+		CCLDeviceInfo *devices = CCL_compute_device_list(opencl);
+		int a;
+
+		for(a = 0; devices[a].name; a++) {
+			tmp.value = devices[a].value;
+			tmp.identifier = devices[a].identifier;
+			tmp.name = devices[a].name;
+			RNA_enum_item_add(&item, &totitem, &tmp);
+		}
+	}
+
+	RNA_enum_item_end(&item, &totitem);
+	*free = 1;
+
+	return item;
+}
+#endif
+
 #else
 
 static void rna_def_userdef_theme_ui_font_style(BlenderRNA *brna)
@@ -2645,6 +2717,12 @@ static void rna_def_userdef_system(BlenderRNA *brna)
 		{18, "UKRAINIAN", 0, "Ukrainian (Український)", "uk_UA"},
 		{ 0, NULL, 0, NULL, NULL}};
 
+#ifdef WITH_CYCLES
+	static EnumPropertyItem compute_device_items[] = {
+		{0, "CPU", 0, "CPU", ""},
+		{ 0, NULL, 0, NULL, NULL}};
+#endif
+
 	srna= RNA_def_struct(brna, "UserPreferencesSystem", NULL);
 	RNA_def_struct_sdna(srna, "UserDef");
 	RNA_def_struct_nested(brna, srna, "UserPreferences");
@@ -2853,14 +2931,20 @@ static void rna_def_userdef_system(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Text Anti-aliasing", "Draw user interface text anti-aliased");
 	RNA_def_property_update(prop, 0, "rna_userdef_text_update");
 	
-#if 0
-	prop= RNA_def_property(srna, "verse_master", PROP_STRING, PROP_NONE);
-	RNA_def_property_string_sdna(prop, NULL, "versemaster");
-	RNA_def_property_ui_text(prop, "Verse Master", "Verse Master-server IP");
-
-	prop= RNA_def_property(srna, "verse_username", PROP_STRING, PROP_NONE);
-	RNA_def_property_string_sdna(prop, NULL, "verseuser");
-	RNA_def_property_ui_text(prop, "Verse Username", "Verse user name");
+#ifdef WITH_CYCLES
+	prop= RNA_def_property(srna, "compute_device_type", PROP_ENUM, PROP_NONE);
+	RNA_def_property_flag(prop, PROP_ENUM_NO_CONTEXT);
+	RNA_def_property_enum_sdna(prop, NULL, "compute_device_type");
+	RNA_def_property_enum_items(prop, compute_device_type_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_userdef_compute_device_type_itemf");
+	RNA_def_property_ui_text(prop, "Compute Device Type", "Device to use for computation (rendering with Cycles)");
+
+	prop= RNA_def_property(srna, "compute_device", PROP_ENUM, PROP_NONE);
+	RNA_def_property_flag(prop, PROP_ENUM_NO_CONTEXT);
+	RNA_def_property_enum_sdna(prop, NULL, "compute_device_id");
+	RNA_def_property_enum_items(prop, compute_device_items);
+	RNA_def_property_enum_funcs(prop, "rna_userdef_compute_device_get", NULL, "rna_userdef_compute_device_itemf");
+	RNA_def_property_ui_text(prop, "Compute Device", "Device to use for computation");
 #endif
 }