Cycles: Render Passes

Currently supported passes:
* Combined, Z, Normal, Object Index, Material Index, Emission, Environment,
  Diffuse/Glossy/Transmission x Direct/Indirect/Color

Not supported yet:
* UV, Vector, Mist

Only enabled for CPU devices at the moment, will do GPU tweaks tommorrow,
also for environment importance sampling.

Documentation:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Passes

1 files changed, 98 insertions, 1 deletions

diff --git a/intern/cycles/kernel/kernel_types.h b/intern/cycles/kernel/kernel_types.h
index 008ec0bdf28..b4b1da83162 100644
--- a/intern/cycles/kernel/kernel_types.h
+++ b/intern/cycles/kernel/kernel_types.h
@@ -70,6 +70,9 @@ CCL_NAMESPACE_BEGIN
 #ifdef __KERNEL_ADV_SHADING__
 #define __MULTI_CLOSURE__
 #define __TRANSPARENT_SHADOWS__
+#ifdef __KERNEL_CPU__
+#define __PASSES__
+#endif
 #endif
 
 //#define __MULTI_LIGHT__
@@ -150,6 +153,75 @@ typedef enum ClosureLabel {
 	LABEL_STOP = 2048
 } ClosureLabel;
 
+/* Render Passes */
+
+typedef enum PassType {
+	PASS_NONE = 0,
+	PASS_COMBINED = 1,
+	PASS_DEPTH = 2,
+	PASS_NORMAL = 8,
+	PASS_UV = 16,
+	PASS_OBJECT_ID = 32,
+	PASS_MATERIAL_ID = 64,
+	PASS_DIFFUSE_COLOR = 128,
+	PASS_GLOSSY_COLOR = 256,
+	PASS_TRANSMISSION_COLOR = 512,
+	PASS_DIFFUSE_INDIRECT = 1024,
+	PASS_GLOSSY_INDIRECT = 2048,
+	PASS_TRANSMISSION_INDIRECT = 4096,
+	PASS_DIFFUSE_DIRECT = 8192,
+	PASS_GLOSSY_DIRECT = 16384,
+	PASS_TRANSMISSION_DIRECT = 32768,
+	PASS_EMISSION = 65536,
+	PASS_BACKGROUND = 131072
+} PassType;
+
+#define PASS_ALL (~0)
+
+#ifdef __PASSES__
+
+typedef float3 PathThroughput;
+
+struct PathRadiance {
+	int use_light_pass;
+
+	float3 indirect;
+	float3 direct_throughput;
+	float3 direct_emission;
+
+	float3 color_diffuse;
+	float3 color_glossy;
+	float3 color_transmission;
+
+	float3 direct_diffuse;
+	float3 direct_glossy;
+	float3 direct_transmission;
+
+	float3 indirect_diffuse;
+	float3 indirect_glossy;
+	float3 indirect_transmission;
+
+	float3 emission;
+	float3 background;
+};
+
+struct BsdfEval {
+	int use_light_pass;
+
+	float3 diffuse;
+	float3 glossy;
+	float3 transmission;
+	float3 transparent;
+};
+
+#else
+
+typedef float3 PathThroughput;
+typedef float3 PathRadiance;
+typedef float3 BsdfEval;
+
+#endif
+
 /* Shader Flag */
 
 typedef enum ShaderFlag {
@@ -353,7 +425,32 @@ typedef struct KernelCamera {
 
 typedef struct KernelFilm {
 	float exposure;
-	int pad1, pad2, pad3;
+	int pass_flag;
+	int pass_stride;
+	int use_light_pass;
+
+	int pass_combined;
+	int pass_depth;
+	int pass_normal;
+	int pass_pad;
+
+	int pass_uv;
+	int pass_object_id;
+	int pass_material_id;
+	int pass_diffuse_color;
+
+	int pass_glossy_color;
+	int pass_transmission_color;
+	int pass_diffuse_indirect;
+	int pass_glossy_indirect;
+
+	int pass_transmission_indirect;
+	int pass_diffuse_direct;
+	int pass_glossy_direct;
+	int pass_transmission_direct;
+
+	int pass_emission;
+	int pass_background;
 } KernelFilm;
 
 typedef struct KernelBackground {