Cycles: Add support for bindless textures.

This adds support for CUDA Texture objects (also known as Bindless textures) for Kepler GPUs (Geforce 6xx and above).
This is used for all 2D/3D textures, data still uses arrays as before.

User benefits:
* No more limits of image textures on Kepler.
 We had 5 float4 and 145 byte4 slots there before, now we have 1024 float4 and 1024 byte4.
 This can be extended further if we need to (just change the define).

* Single channel textures slots (byte and float) are now supported on Kepler as well (1024 slots for each type).

ToDo / Issues:
* 3D textures don't work yet, at least don't show up during render. I have no idea whats wrong yet.
* Dynamically allocate bindless_mapping array?

I hope Fermi still works fine, but that should be tested on a Fermi card before pushing to master.

Part of my GSoC 2016.

Reviewers: sergey, #cycles, brecht

Subscribers: swerner, jtheninja, brecht, sergey

Differential Revision: https://developer.blender.org/D1999

1 files changed, 2 insertions, 2 deletions

diff --git a/intern/cycles/device/device_multi.cpp b/intern/cycles/device/device_multi.cpp
index 6141f9af50f..434d0085d39 100644
--- a/intern/cycles/device/device_multi.cpp
+++ b/intern/cycles/device/device_multi.cpp
@@ -352,7 +352,7 @@ static bool device_multi_add(vector<DeviceInfo>& devices, DeviceType type, bool
 
 	info.advanced_shading = with_advanced_shading;
 	info.pack_images = false;
-	info.extended_images = true;
+	info.has_bindless_textures = true;
 
 	foreach(DeviceInfo& subinfo, devices) {
 		if(subinfo.type == type) {
@@ -376,7 +376,7 @@ static bool device_multi_add(vector<DeviceInfo>& devices, DeviceType type, bool
 			if(subinfo.display_device)
 				info.display_device = true;
 			info.pack_images = info.pack_images || subinfo.pack_images;
-			info.extended_images = info.extended_images && subinfo.extended_images;
+			info.has_bindless_textures = info.has_bindless_textures && subinfo.has_bindless_textures;
 			num_added++;
 		}
 	}