From: Kenneth Graunke Date: Mon, 3 Dec 2012 23:20:37 +0000 (-0800) Subject: i965: Update multisampling state for Broadwell. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a0d4311072267aa5427eb2cacd820e96f114eba0;p=mesa.git i965: Update multisampling state for Broadwell. On previous platforms, 3DSTATE_MULTISAMPLE contained the number of samples, pixel location, and the positions of each sample within a pixel for each multisampling mode (4x and 8x). It was also a non-pipelined command, presumably since changing the sample positions is fairly drastic. Broadwell improves upon this by splitting the sample positions out into a separate non-pipelined state packet, 3DSTATE_SAMPLE_PATTERN. With that removed, 3DSTATE_MULTISAMPLE becomes a pipelined state packet. Broadwell also supports 2x and 16x multisampling, in addition to the 4x and 8x supported by Gen7. This patch, however, does not implement 2x and 16x. Signed-off-by: Kenneth Graunke Signed-off-by: Chad Versace Reviewed-by: Eric Anholt --- diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources index dcc8c5ef066..f47ea6b4d0b 100644 --- a/src/mesa/drivers/dri/i965/Makefile.sources +++ b/src/mesa/drivers/dri/i965/Makefile.sources @@ -150,6 +150,7 @@ i965_FILES = \ gen8_generator.cpp \ gen8_instruction.c \ gen8_misc_state.c \ + gen8_multisample_state.c \ gen8_sf_state.c \ gen8_sol_state.c \ gen8_surface_state.c \ diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index 47f94b6ccab..afa335041e9 100644 --- a/src/mesa/drivers/dri/i965/brw_context.h +++ b/src/mesa/drivers/dri/i965/brw_context.h @@ -1732,6 +1732,10 @@ gen6_get_sample_position(struct gl_context *ctx, GLuint index, GLfloat *result); +/* gen8_multisample_state.c */ +void gen8_emit_3dstate_multisample(struct brw_context *brw, unsigned num_samp); +void gen8_emit_3dstate_sample_pattern(struct brw_context *brw); + /* gen7_urb.c */ void gen7_emit_push_constant_state(struct brw_context *brw, unsigned vs_size, diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h index 52af08b4675..e2869422f2a 100644 --- a/src/mesa/drivers/dri/i965/brw_defines.h +++ b/src/mesa/drivers/dri/i965/brw_defines.h @@ -2024,12 +2024,17 @@ enum brw_wm_barycentric_interp_mode { /* DW3: SVB maximum index */ #define _3DSTATE_MULTISAMPLE 0x790d /* GEN6+ */ +#define GEN8_3DSTATE_MULTISAMPLE 0x780d /* GEN8+ */ /* DW1 */ # define MS_PIXEL_LOCATION_CENTER (0 << 4) # define MS_PIXEL_LOCATION_UPPER_LEFT (1 << 4) # define MS_NUMSAMPLES_1 (0 << 1) +# define MS_NUMSAMPLES_2 (1 << 1) # define MS_NUMSAMPLES_4 (2 << 1) # define MS_NUMSAMPLES_8 (3 << 1) +# define MS_NUMSAMPLES_16 (4 << 1) + +#define _3DSTATE_SAMPLE_PATTERN 0x791c #define _3DSTATE_STENCIL_BUFFER 0x790e /* ILK, SNB */ #define _3DSTATE_HIER_DEPTH_BUFFER 0x790f /* ILK, SNB */ diff --git a/src/mesa/drivers/dri/i965/brw_state.h b/src/mesa/drivers/dri/i965/brw_state.h index 865448c516c..40a152f1490 100644 --- a/src/mesa/drivers/dri/i965/brw_state.h +++ b/src/mesa/drivers/dri/i965/brw_state.h @@ -134,6 +134,7 @@ extern const struct brw_tracked_state haswell_cut_index; extern const struct brw_tracked_state gen8_blend_state; extern const struct brw_tracked_state gen8_disable_stages; extern const struct brw_tracked_state gen8_index_buffer; +extern const struct brw_tracked_state gen8_multisample_state; extern const struct brw_tracked_state gen8_ps_blend; extern const struct brw_tracked_state gen8_ps_extra; extern const struct brw_tracked_state gen8_ps_state; diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c b/src/mesa/drivers/dri/i965/brw_state_upload.c index 044a30a9510..5ecebf5c015 100644 --- a/src/mesa/drivers/dri/i965/brw_state_upload.c +++ b/src/mesa/drivers/dri/i965/brw_state_upload.c @@ -294,7 +294,7 @@ static const struct brw_tracked_state *gen8_atoms[] = &brw_fs_samplers, &brw_vs_samplers, &brw_gs_samplers, - &gen6_multisample_state, + &gen8_multisample_state, &gen8_disable_stages, &gen8_vs_state, @@ -342,6 +342,10 @@ brw_upload_initial_gpu_state(struct brw_context *brw) return; brw_upload_invariant_state(brw); + + if (brw->gen >= 8) { + gen8_emit_3dstate_sample_pattern(brw); + } } void brw_init_state( struct brw_context *brw ) diff --git a/src/mesa/drivers/dri/i965/gen6_multisample_state.c b/src/mesa/drivers/dri/i965/gen6_multisample_state.c index 2f2f575d043..f28e88022c6 100644 --- a/src/mesa/drivers/dri/i965/gen6_multisample_state.c +++ b/src/mesa/drivers/dri/i965/gen6_multisample_state.c @@ -64,6 +64,8 @@ gen6_emit_3dstate_multisample(struct brw_context *brw, uint32_t sample_positions_3210 = 0; uint32_t sample_positions_7654 = 0; + assert(brw->gen < 8); + switch (num_samples) { case 0: case 1: diff --git a/src/mesa/drivers/dri/i965/gen8_multisample_state.c b/src/mesa/drivers/dri/i965/gen8_multisample_state.c new file mode 100644 index 00000000000..ad273e4d424 --- /dev/null +++ b/src/mesa/drivers/dri/i965/gen8_multisample_state.c @@ -0,0 +1,117 @@ +/* + * Copyright © 2012 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 + * 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. + */ + +#include "intel_batchbuffer.h" + +#include "brw_context.h" +#include "brw_defines.h" +#include "brw_multisample_state.h" + +/** + * 3DSTATE_MULTISAMPLE + */ +void +gen8_emit_3dstate_multisample(struct brw_context *brw, unsigned num_samples) +{ + uint32_t number_of_multisamples = 0; + + switch (num_samples) { + case 0: + case 1: + number_of_multisamples = MS_NUMSAMPLES_1; + break; + case 2: + number_of_multisamples = MS_NUMSAMPLES_2; + break; + case 4: + number_of_multisamples = MS_NUMSAMPLES_4; + break; + case 8: + number_of_multisamples = MS_NUMSAMPLES_8; + break; + case 16: + number_of_multisamples = MS_NUMSAMPLES_16; + break; + default: + assert(!"Unrecognized num_samples in gen8_emit_3dstate_multisample"); + break; + } + + BEGIN_BATCH(2); + OUT_BATCH(GEN8_3DSTATE_MULTISAMPLE << 16 | (2 - 2)); + OUT_BATCH(MS_PIXEL_LOCATION_CENTER | number_of_multisamples); + ADVANCE_BATCH(); +} + +/** + * 3DSTATE_SAMPLE_PATTERN + */ +void +gen8_emit_3dstate_sample_pattern(struct brw_context *brw) +{ + BEGIN_BATCH(9); + OUT_BATCH(_3DSTATE_SAMPLE_PATTERN << 16 | (9 - 2)); + + /* 16x MSAA + * XXX: Need to program these. + */ + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + OUT_BATCH(0); + + /* 8x MSAA */ + OUT_BATCH(brw_multisample_positions_8x[1]); /* sample positions 7654 */ + OUT_BATCH(brw_multisample_positions_8x[0]); /* sample positions 3210 */ + + /* 4x MSAA */ + OUT_BATCH(brw_multisample_positions_4x[0]); + + /* 2x and 1x MSAA patterns + * XXX: need to program 2x. + */ + OUT_BATCH(0x00880000); + ADVANCE_BATCH(); +} + + +static void +upload_multisample_state(struct brw_context *brw) +{ + struct gl_context *ctx = &brw->ctx; + + /* _NEW_BUFFERS, _NEW_MULTISAMPLE */ + unsigned num_samples = ctx->DrawBuffer->Visual.samples; + + gen8_emit_3dstate_multisample(brw, num_samples); + gen6_emit_3dstate_sample_mask(brw, gen6_determine_sample_mask(brw)); +} + +const struct brw_tracked_state gen8_multisample_state = { + .dirty = { + .mesa = _NEW_BUFFERS | _NEW_MULTISAMPLE, + .brw = BRW_NEW_CONTEXT, + .cache = 0 + }, + .emit = upload_multisample_state +};