iris: Initial commit of a new 'iris' driver for Intel Gen8+ GPUs.

This commit introduces a new Gallium driver for Intel Gen8+ GPUs,
named 'iris_dri.so' after the hardware.

Developed by:
- Kenneth Graunke (overall driver)
- Dave Airlie (shaders, conditional render, overflow query, Gen8 port)
- Chris Wilson (fencing, pinned memory, ...)
- Jordan Justen (compute shaders)
- Jason Ekstrand (image load store)
- Caio Marcelo de Oliveira Filho (tessellation control passthrough)
- Rafael Antognolli (auxiliary buffer fixes)
- The rest of the i965 contributors and the Mesa community

1 files changed, 178 insertions, 0 deletions

diff --git a/src/gallium/drivers/iris/iris_draw.c b/src/gallium/drivers/iris/iris_draw.c
new file mode 100644
index 00000000000..b2472dd3a2c
--- /dev/null
+++ b/src/gallium/drivers/iris/iris_draw.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright © 2017 Intel Corporation
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
+ */
+#include <stdio.h>
+#include <errno.h>
+#include "pipe/p_defines.h"
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
+#include "util/u_inlines.h"
+#include "util/u_transfer.h"
+#include "intel/compiler/brw_compiler.h"
+#include "iris_context.h"
+
+#define __gen_address_type unsigned
+#define __gen_user_data void
+
+static uint64_t
+__gen_combine_address(void *user_data, void *location,
+                      unsigned address, uint32_t delta)
+{
+   return delta;
+}
+
+#define __genxml_cmd_length(cmd) cmd ## _length
+#define __genxml_cmd_length_bias(cmd) cmd ## _length_bias
+#define __genxml_cmd_header(cmd) cmd ## _header
+#define __genxml_cmd_pack(cmd) cmd ## _pack
+
+#define iris_pack_command(cmd, dst, name)                         \
+   for (struct cmd name = { __genxml_cmd_header(cmd) },           \
+        *_dst = (void *)(dst); __builtin_expect(_dst != NULL, 1); \
+        __genxml_cmd_pack(cmd)(NULL, (void *)dst, &name),         \
+        _dst = NULL)
+
+#define iris_pack_state(cmd, dst, name)                           \
+   for (struct cmd name = {},                                     \
+        *_dst = (void *)(dst); __builtin_expect(_dst != NULL, 1); \
+        __genxml_cmd_pack(cmd)(NULL, (void *)_dst, &name),        \
+        _dst = NULL)
+
+#include "genxml/genX_pack.h"
+#include "genxml/gen_macros.h"
+
+static void
+iris_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
+{
+#if 0
+   l3 configuration
+
+   3DSTATE_VIEWPORT_STATE_POINTERS_CC - CC_VIEWPORT
+     -> from iris_depth_stencil_alpha_state
+
+   3DSTATE_VIEWPORT_STATE_POINTERS_SF_CL - SF_CLIP_VIEWPORT
+     -> pipe_viewport_state for matrix elements, guardband is calculated
+        from those.  can calculate screen space from matrix apparently...
+
+   3DSTATE_SCISSOR_STATE_POINTERS - SCISSOR_RECT
+     -> from ice->state.scissors
+
+   3DSTATE_PUSH_CONSTANT_ALLOC_*
+   3DSTATE_URB_*
+     -> TODO
+
+   3DSTATE_PS_BLEND
+   3DSTATE_BLEND_STATE_POINTERS - BLEND_STATE
+     -> from iris_blend_state (most) + iris_depth_stencil_alpha_state
+        (alpha test function/enable) + has writeable RT from ???????
+
+   3DSTATE_CC_STATE_POINTERS - COLOR_CALC_STATE
+     -> from ice->state.blend_color + iris_depth_stencil_alpha_state
+        (ref_value)
+
+   3DSTATE_CONSTANT_* - push constants
+     -> TODO
+
+   Surfaces:
+   - pull constants
+   - ubos/ssbos/abos
+   - images
+   - textures
+   - render targets - write and read
+   3DSTATE_BINDING_TABLE_POINTERS_*
+     -> TODO
+
+   3DSTATE_SAMPLER_STATE_POINTERS_*
+     -> TODO
+
+   3DSTATE_MULTISAMPLE
+   3DSTATE_SAMPLE_MASK
+
+   3DSTATE_VS
+   3DSTATE_HS
+   3DSTATE_TE
+   3DSTATE_DS
+   3DSTATE_GS
+   3DSTATE_PS_EXTRA
+   3DSTATE_PS
+   3DSTATE_STREAMOUT
+   3DSTATE_SO_BUFFER
+   3DSTATE_SO_DECL_LIST
+
+   3DSTATE_CLIP
+     -> iris_raster_state + ??? (Non-perspective Bary, ForceZeroRTAIndex)
+
+   3DSTATE_RASTER
+   3DSTATE_SF
+     -> iris_raster_state
+
+   3DSTATE_WM
+     -> iris_raster_state + FS state (barycentric, EDSC)
+   3DSTATE_SBE
+     -> iris_raster_state (point sprite texture coordinate origin)
+     -> bunch of shader state...
+   3DSTATE_SBE_SWIZ
+     -> FS state
+
+   3DSTATE_DEPTH_BUFFER
+   3DSTATE_HIER_DEPTH_BUFFER
+   3DSTATE_STENCIL_BUFFER
+   3DSTATE_CLEAR_PARAMS
+     -> iris_framebuffer_state?
+
+   3DSTATE_VF_TOPOLOGY
+     -> pipe_draw_info (prim_mode)
+   3DSTATE_VF
+     -> pipe_draw_info (restart_index, primitive_restart)
+
+   3DSTATE_INDEX_BUFFER
+     -> pipe_draw_info (index)
+   3DSTATE_VERTEX_BUFFERS
+     -> pipe_vertex_buffer (set_vertex_buffer hook)
+   3DSTATE_VERTEX_ELEMENTS
+     -> iris_vertex_element
+   3DSTATE_VF_INSTANCING
+     -> iris_vertex_element
+   3DSTATE_VF_SGVS
+     -> TODO ???
+   3DSTATE_VF_COMPONENT_PACKING
+     -> TODO ???
+
+   3DPRIMITIVE
+     -> pipe_draw_info
+
+   rare:
+   3DSTATE_POLY_STIPPLE_OFFSET
+   3DSTATE_POLY_STIPPLE_PATTERN
+     -> ice->state.poly_stipple
+   3DSTATE_LINE_STIPPLE
+     -> iris_raster_state
+
+   once:
+   3DSTATE_AA_LINE_PARAMETERS
+   3DSTATE_WM_CHROMAKEY
+   3DSTATE_SAMPLE_PATTERN
+   3DSTATE_DRAWING_RECTANGLE
+   3DSTATE_WM_HZ_OP
+#endif
+}