radv: add initial non-conformant radv vulkan driver

This squashes all the radv development up until now into
one for merging.

History can be found:
https://github.com/airlied/mesa/tree/semi-interesting

This requires llvm 3.9 and is in no way considered
a conformant vulkan implementation. It can run a number
of vulkan applications, and supports all GPUs using
the amdgpu kernel driver.

Thanks to Intel for providing anv and spirv->nir,
and Emil Velikov for reviewing build integration.

Parts of this are:
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net>

Authors: Bas Nieuwenhuizen and Dave Airlie
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/radv_descriptor_set.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright © 2016 Bas Nieuwenhuizen
+  *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#pragma once
+
+#include <vulkan/vulkan.h>
+
+#define MAX_SETS         8
+
+struct radv_descriptor_set_binding_layout {
+   VkDescriptorType type;
+
+   /* Number of array elements in this binding */
+   uint16_t array_size;
+
+   uint16_t offset;
+   uint16_t buffer_offset;
+   uint16_t dynamic_offset_offset;
+
+   /* redundant with the type, each for a single array element */
+   uint16_t size;
+   uint16_t buffer_count;
+   uint16_t dynamic_offset_count;
+
+   /* Immutable samplers (or NULL if no immutable samplers) */
+   struct radv_sampler **immutable_samplers;
+};
+
+struct radv_descriptor_set_layout {
+   /* Number of bindings in this descriptor set */
+   uint16_t binding_count;
+
+   /* Total size of the descriptor set with room for all array entries */
+   uint16_t size;
+
+   /* Shader stages affected by this descriptor set */
+   uint16_t shader_stages;
+   uint16_t dynamic_shader_stages;
+
+   /* Number of buffers in this descriptor set */
+   uint16_t buffer_count;
+
+   /* Number of dynamic offsets used by this descriptor set */
+   uint16_t dynamic_offset_count;
+
+   /* Bindings in this descriptor set */
+   struct radv_descriptor_set_binding_layout binding[0];
+};
+
+struct radv_pipeline_layout {
+   struct {
+      struct radv_descriptor_set_layout *layout;
+      uint32_t size;
+      uint32_t dynamic_offset_start;
+   } set[MAX_SETS];
+
+   uint32_t num_sets;
+   uint32_t push_constant_size;
+   uint32_t dynamic_offset_count;
+
+   unsigned char sha1[20];
+};