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, 8 insertions, 60 deletions

diff --git a/intern/cycles/kernel/kernel_textures.h b/intern/cycles/kernel/kernel_textures.h
index 62b0a6f2923..245d236ff97 100644
--- a/intern/cycles/kernel/kernel_textures.h
+++ b/intern/cycles/kernel/kernel_textures.h
@@ -72,6 +72,8 @@ KERNEL_TEX(float, texture_float, __lookup_table)
 /* sobol */
 KERNEL_TEX(uint, texture_uint, __sobol_directions)
 
+#ifdef __KERNEL_CUDA__
+#  if __CUDA_ARCH__ < 300
 /* full-float image */
 KERNEL_IMAGE_TEX(float4, texture_image_float4, __tex_image_float4_000)
 KERNEL_IMAGE_TEX(float4, texture_image_float4, __tex_image_float4_001)
@@ -174,66 +176,12 @@ KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_089)
 KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_090)
 KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_091)
 KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_092)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_093)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_094)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_095)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_096)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_097)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_098)
-
-/* Kepler and above */
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_099)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_100)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_101)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_102)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_103)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_104)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_105)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_106)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_107)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_108)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_109)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_110)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_111)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_112)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_113)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_114)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_115)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_116)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_117)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_118)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_119)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_120)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_121)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_122)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_123)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_124)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_125)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_126)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_127)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_128)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_129)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_130)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_131)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_132)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_133)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_134)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_135)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_136)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_137)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_138)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_139)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_140)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_141)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_142)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_143)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_144)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_145)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_146)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_147)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_148)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_149)
-KERNEL_IMAGE_TEX(uchar4, texture_image_uchar4, __tex_image_byte4_150)
+
+#  else
+/* bindless textures */
+KERNEL_TEX(uint, texture_uint, __bindless_mapping)
+#  endif
+#endif
 
 /* packed image (opencl) */
 KERNEL_TEX(uchar4, texture_uchar4, __tex_image_byte4_packed)