2 * Copyright © 2012 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 #include "program/prog_instruction.h"
28 #include "blorp_priv.h"
29 #include "brw_compiler.h"
33 blorp_init(struct blorp_context
*blorp
, void *driver_ctx
,
34 struct isl_device
*isl_dev
)
36 blorp
->driver_ctx
= driver_ctx
;
37 blorp
->isl_dev
= isl_dev
;
41 blorp_finish(struct blorp_context
*blorp
)
43 blorp
->driver_ctx
= NULL
;
47 blorp_batch_init(struct blorp_context
*blorp
,
48 struct blorp_batch
*batch
, void *driver_batch
,
49 enum blorp_batch_flags flags
)
52 batch
->driver_batch
= driver_batch
;
57 blorp_batch_finish(struct blorp_batch
*batch
)
63 brw_blorp_surface_info_init(struct blorp_context
*blorp
,
64 struct brw_blorp_surface_info
*info
,
65 const struct blorp_surf
*surf
,
66 unsigned int level
, unsigned int layer
,
67 enum isl_format format
, bool is_render_target
)
71 if (format
== ISL_FORMAT_UNSUPPORTED
)
72 format
= surf
->surf
->format
;
74 if (format
== ISL_FORMAT_R24_UNORM_X8_TYPELESS
) {
75 /* Unfortunately, ISL_FORMAT_R24_UNORM_X8_TYPELESS it isn't supported as
76 * a render target, which would prevent us from blitting to 24-bit
77 * depth. The miptree consists of 32 bits per pixel, arranged as 24-bit
78 * depth values interleaved with 8 "don't care" bits. Since depth
79 * values don't require any blending, it doesn't matter how we interpret
80 * the bit pattern as long as we copy the right amount of data, so just
81 * map it as 8-bit BGRA.
83 format
= ISL_FORMAT_B8G8R8A8_UNORM
;
84 } else if (surf
->surf
->usage
& ISL_SURF_USAGE_STENCIL_BIT
) {
85 assert(surf
->surf
->format
== ISL_FORMAT_R8_UINT
);
86 /* Prior to Broadwell, we can't render to R8_UINT */
87 if (blorp
->isl_dev
->info
->gen
< 8)
88 format
= ISL_FORMAT_R8_UNORM
;
91 info
->surf
= *surf
->surf
;
92 info
->addr
= surf
->addr
;
94 info
->aux_usage
= surf
->aux_usage
;
95 if (info
->aux_usage
!= ISL_AUX_USAGE_NONE
) {
96 info
->aux_surf
= *surf
->aux_surf
;
97 info
->aux_addr
= surf
->aux_addr
;
100 info
->clear_color
= surf
->clear_color
;
102 info
->view
= (struct isl_view
) {
103 .usage
= is_render_target
? ISL_SURF_USAGE_RENDER_TARGET_BIT
:
104 ISL_SURF_USAGE_TEXTURE_BIT
,
108 .swizzle
= ISL_SWIZZLE_IDENTITY
,
111 info
->view
.array_len
= MAX2(info
->surf
.logical_level0_px
.depth
,
112 info
->surf
.logical_level0_px
.array_len
);
114 if (!is_render_target
&&
115 (info
->surf
.dim
== ISL_SURF_DIM_3D
||
116 info
->surf
.msaa_layout
== ISL_MSAA_LAYOUT_ARRAY
)) {
117 /* 3-D textures don't support base_array layer and neither do 2-D
118 * multisampled textures on IVB so we need to pass it through the
119 * sampler in those cases. These are also two cases where we are
120 * guaranteed that we won't be doing any funny surface hacks.
122 info
->view
.base_array_layer
= 0;
123 info
->z_offset
= layer
;
125 info
->view
.base_array_layer
= layer
;
127 assert(info
->view
.array_len
>= info
->view
.base_array_layer
);
128 info
->view
.array_len
-= info
->view
.base_array_layer
;
132 /* Sandy Bridge has a limit of a maximum of 512 layers for layered
135 if (is_render_target
&& blorp
->isl_dev
->info
->gen
== 6)
136 info
->view
.array_len
= MIN2(info
->view
.array_len
, 512);
141 blorp_params_init(struct blorp_params
*params
)
143 memset(params
, 0, sizeof(*params
));
144 params
->num_draw_buffers
= 1;
145 params
->num_layers
= 1;
149 brw_blorp_init_wm_prog_key(struct brw_wm_prog_key
*wm_key
)
151 memset(wm_key
, 0, sizeof(*wm_key
));
152 wm_key
->nr_color_regions
= 1;
153 for (int i
= 0; i
< MAX_SAMPLERS
; i
++)
154 wm_key
->tex
.swizzles
[i
] = SWIZZLE_XYZW
;
158 nir_uniform_type_size(const struct glsl_type
*type
)
160 /* Only very basic types are allowed */
161 assert(glsl_type_is_vector_or_scalar(type
));
162 assert(glsl_get_bit_size(type
) == 32);
164 return glsl_get_vector_elements(type
) * 4;
168 blorp_compile_fs(struct blorp_context
*blorp
, void *mem_ctx
,
169 struct nir_shader
*nir
,
170 const struct brw_wm_prog_key
*wm_key
,
172 struct brw_wm_prog_data
*wm_prog_data
,
173 unsigned *program_size
)
175 const struct brw_compiler
*compiler
= blorp
->compiler
;
178 compiler
->glsl_compiler_options
[MESA_SHADER_FRAGMENT
].NirOptions
;
180 memset(wm_prog_data
, 0, sizeof(*wm_prog_data
));
182 wm_prog_data
->base
.nr_params
= 0;
183 wm_prog_data
->base
.param
= NULL
;
185 /* BLORP always just uses the first two binding table entries */
186 wm_prog_data
->binding_table
.render_target_start
= BLORP_RENDERBUFFER_BT_INDEX
;
187 wm_prog_data
->base
.binding_table
.texture_start
= BLORP_TEXTURE_BT_INDEX
;
189 nir
= brw_preprocess_nir(compiler
, nir
);
190 nir_remove_dead_variables(nir
, nir_var_shader_in
);
191 nir_shader_gather_info(nir
, nir_shader_get_entrypoint(nir
));
193 /* Uniforms are required to be lowered before going into compile_fs. For
194 * BLORP, we'll assume that whoever builds the shader sets the location
195 * they want so we just need to lower them and figure out how many we have
198 nir
->num_uniforms
= 0;
199 nir_foreach_variable(var
, &nir
->uniforms
) {
200 var
->data
.driver_location
= var
->data
.location
;
201 unsigned end
= var
->data
.location
+ nir_uniform_type_size(var
->type
);
202 nir
->num_uniforms
= MAX2(nir
->num_uniforms
, end
);
204 nir_lower_io(nir
, nir_var_uniform
, nir_uniform_type_size
, 0);
206 const unsigned *program
=
207 brw_compile_fs(compiler
, blorp
->driver_ctx
, mem_ctx
, wm_key
,
208 wm_prog_data
, nir
, NULL
, -1, -1, false, use_repclear
,
209 NULL
, program_size
, NULL
);
215 blorp_gen6_hiz_op(struct blorp_batch
*batch
,
216 struct blorp_surf
*surf
, unsigned level
, unsigned layer
,
217 enum blorp_hiz_op op
)
219 struct blorp_params params
;
220 blorp_params_init(¶ms
);
224 brw_blorp_surface_info_init(batch
->blorp
, ¶ms
.depth
, surf
, level
, layer
,
225 surf
->surf
->format
, true);
227 /* Align the rectangle primitive to 8x4 pixels.
229 * During fast depth clears, the emitted rectangle primitive must be
230 * aligned to 8x4 pixels. From the Ivybridge PRM, Vol 2 Part 1 Section
231 * 11.5.3.1 Depth Buffer Clear (and the matching section in the Sandybridge
233 * If Number of Multisamples is NUMSAMPLES_1, the rectangle must be
234 * aligned to an 8x4 pixel block relative to the upper left corner
235 * of the depth buffer [...]
237 * For hiz resolves, the rectangle must also be 8x4 aligned. Item
238 * WaHizAmbiguate8x4Aligned from the Haswell workarounds page and the
239 * Ivybridge simulator require the alignment.
241 * To be safe, let's just align the rect for all hiz operations and all
242 * hardware generations.
244 * However, for some miptree slices of a Z24 texture, emitting an 8x4
245 * aligned rectangle that covers the slice may clobber adjacent slices if
246 * we strictly adhered to the texture alignments specified in the PRM. The
247 * Ivybridge PRM, Section "Alignment Unit Size", states that
248 * SURFACE_STATE.Surface_Horizontal_Alignment should be 4 for Z24 surfaces,
249 * not 8. But commit 1f112cc increased the alignment from 4 to 8, which
250 * prevents the clobbering.
252 params
.x1
= minify(params
.depth
.surf
.logical_level0_px
.width
,
253 params
.depth
.view
.base_level
);
254 params
.y1
= minify(params
.depth
.surf
.logical_level0_px
.height
,
255 params
.depth
.view
.base_level
);
256 params
.x1
= ALIGN(params
.x1
, 8);
257 params
.y1
= ALIGN(params
.y1
, 4);
259 if (params
.depth
.view
.base_level
== 0) {
260 /* TODO: What about MSAA? */
261 params
.depth
.surf
.logical_level0_px
.width
= params
.x1
;
262 params
.depth
.surf
.logical_level0_px
.height
= params
.y1
;
265 params
.dst
.surf
.samples
= params
.depth
.surf
.samples
;
266 params
.dst
.surf
.logical_level0_px
= params
.depth
.surf
.logical_level0_px
;
267 params
.depth_format
= isl_format_get_depth_format(surf
->surf
->format
, false);
269 batch
->blorp
->exec(batch
, ¶ms
);