| /* |
| * Copyright 2014 Advanced Micro Devices, Inc. |
| * |
| * 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 "si_pipe.h" |
| #include "sid.h" |
| #include "radeon/r600_cs.h" |
| |
| /* For MSAA sample positions. */ |
| #define FILL_SREG(s0x, s0y, s1x, s1y, s2x, s2y, s3x, s3y) \ |
| (((s0x) & 0xf) | (((unsigned)(s0y) & 0xf) << 4) | \ |
| (((unsigned)(s1x) & 0xf) << 8) | (((unsigned)(s1y) & 0xf) << 12) | \ |
| (((unsigned)(s2x) & 0xf) << 16) | (((unsigned)(s2y) & 0xf) << 20) | \ |
| (((unsigned)(s3x) & 0xf) << 24) | (((unsigned)(s3y) & 0xf) << 28)) |
| |
| /* 2xMSAA |
| * There are two locations (4, 4), (-4, -4). */ |
| static const uint32_t sample_locs_2x[4] = { |
| FILL_SREG(4, 4, -4, -4, 4, 4, -4, -4), |
| FILL_SREG(4, 4, -4, -4, 4, 4, -4, -4), |
| FILL_SREG(4, 4, -4, -4, 4, 4, -4, -4), |
| FILL_SREG(4, 4, -4, -4, 4, 4, -4, -4), |
| }; |
| /* 4xMSAA |
| * There are 4 locations: (-2, -6), (6, -2), (-6, 2), (2, 6). */ |
| static const uint32_t sample_locs_4x[4] = { |
| FILL_SREG(-2, -6, 6, -2, -6, 2, 2, 6), |
| FILL_SREG(-2, -6, 6, -2, -6, 2, 2, 6), |
| FILL_SREG(-2, -6, 6, -2, -6, 2, 2, 6), |
| FILL_SREG(-2, -6, 6, -2, -6, 2, 2, 6), |
| }; |
| |
| /* Cayman 8xMSAA */ |
| static const uint32_t sample_locs_8x[] = { |
| FILL_SREG( 1, -3, -1, 3, 5, 1, -3, -5), |
| FILL_SREG( 1, -3, -1, 3, 5, 1, -3, -5), |
| FILL_SREG( 1, -3, -1, 3, 5, 1, -3, -5), |
| FILL_SREG( 1, -3, -1, 3, 5, 1, -3, -5), |
| FILL_SREG(-5, 5, -7, -1, 3, 7, 7, -7), |
| FILL_SREG(-5, 5, -7, -1, 3, 7, 7, -7), |
| FILL_SREG(-5, 5, -7, -1, 3, 7, 7, -7), |
| FILL_SREG(-5, 5, -7, -1, 3, 7, 7, -7), |
| }; |
| /* Cayman 16xMSAA */ |
| static const uint32_t sample_locs_16x[] = { |
| FILL_SREG( 1, 1, -1, -3, -3, 2, 4, -1), |
| FILL_SREG( 1, 1, -1, -3, -3, 2, 4, -1), |
| FILL_SREG( 1, 1, -1, -3, -3, 2, 4, -1), |
| FILL_SREG( 1, 1, -1, -3, -3, 2, 4, -1), |
| FILL_SREG(-5, -2, 2, 5, 5, 3, 3, -5), |
| FILL_SREG(-5, -2, 2, 5, 5, 3, 3, -5), |
| FILL_SREG(-5, -2, 2, 5, 5, 3, 3, -5), |
| FILL_SREG(-5, -2, 2, 5, 5, 3, 3, -5), |
| FILL_SREG(-2, 6, 0, -7, -4, -6, -6, 4), |
| FILL_SREG(-2, 6, 0, -7, -4, -6, -6, 4), |
| FILL_SREG(-2, 6, 0, -7, -4, -6, -6, 4), |
| FILL_SREG(-2, 6, 0, -7, -4, -6, -6, 4), |
| FILL_SREG(-8, 0, 7, -4, 6, 7, -7, -8), |
| FILL_SREG(-8, 0, 7, -4, 6, 7, -7, -8), |
| FILL_SREG(-8, 0, 7, -4, 6, 7, -7, -8), |
| FILL_SREG(-8, 0, 7, -4, 6, 7, -7, -8), |
| }; |
| |
| static void si_get_sample_position(struct pipe_context *ctx, unsigned sample_count, |
| unsigned sample_index, float *out_value) |
| { |
| int offset, index; |
| struct { |
| int idx:4; |
| } val; |
| |
| switch (sample_count) { |
| case 1: |
| default: |
| out_value[0] = out_value[1] = 0.5; |
| break; |
| case 2: |
| offset = 4 * (sample_index * 2); |
| val.idx = (sample_locs_2x[0] >> offset) & 0xf; |
| out_value[0] = (float)(val.idx + 8) / 16.0f; |
| val.idx = (sample_locs_2x[0] >> (offset + 4)) & 0xf; |
| out_value[1] = (float)(val.idx + 8) / 16.0f; |
| break; |
| case 4: |
| offset = 4 * (sample_index * 2); |
| val.idx = (sample_locs_4x[0] >> offset) & 0xf; |
| out_value[0] = (float)(val.idx + 8) / 16.0f; |
| val.idx = (sample_locs_4x[0] >> (offset + 4)) & 0xf; |
| out_value[1] = (float)(val.idx + 8) / 16.0f; |
| break; |
| case 8: |
| offset = 4 * (sample_index % 4 * 2); |
| index = (sample_index / 4) * 4; |
| val.idx = (sample_locs_8x[index] >> offset) & 0xf; |
| out_value[0] = (float)(val.idx + 8) / 16.0f; |
| val.idx = (sample_locs_8x[index] >> (offset + 4)) & 0xf; |
| out_value[1] = (float)(val.idx + 8) / 16.0f; |
| break; |
| case 16: |
| offset = 4 * (sample_index % 4 * 2); |
| index = (sample_index / 4) * 4; |
| val.idx = (sample_locs_16x[index] >> offset) & 0xf; |
| out_value[0] = (float)(val.idx + 8) / 16.0f; |
| val.idx = (sample_locs_16x[index] >> (offset + 4)) & 0xf; |
| out_value[1] = (float)(val.idx + 8) / 16.0f; |
| break; |
| } |
| } |
| |
| void si_emit_sample_locations(struct radeon_winsys_cs *cs, int nr_samples) |
| { |
| switch (nr_samples) { |
| default: |
| case 1: |
| radeon_set_context_reg(cs, R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, 0); |
| radeon_set_context_reg(cs, R_028C08_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_0, 0); |
| radeon_set_context_reg(cs, R_028C18_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_0, 0); |
| radeon_set_context_reg(cs, R_028C28_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_0, 0); |
| break; |
| case 2: |
| radeon_set_context_reg(cs, R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, sample_locs_2x[0]); |
| radeon_set_context_reg(cs, R_028C08_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_0, sample_locs_2x[1]); |
| radeon_set_context_reg(cs, R_028C18_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_0, sample_locs_2x[2]); |
| radeon_set_context_reg(cs, R_028C28_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_0, sample_locs_2x[3]); |
| break; |
| case 4: |
| radeon_set_context_reg(cs, R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, sample_locs_4x[0]); |
| radeon_set_context_reg(cs, R_028C08_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_0, sample_locs_4x[1]); |
| radeon_set_context_reg(cs, R_028C18_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_0, sample_locs_4x[2]); |
| radeon_set_context_reg(cs, R_028C28_PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_0, sample_locs_4x[3]); |
| break; |
| case 8: |
| radeon_set_context_reg_seq(cs, R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, 14); |
| radeon_emit(cs, sample_locs_8x[0]); |
| radeon_emit(cs, sample_locs_8x[4]); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, sample_locs_8x[1]); |
| radeon_emit(cs, sample_locs_8x[5]); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, sample_locs_8x[2]); |
| radeon_emit(cs, sample_locs_8x[6]); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, 0); |
| radeon_emit(cs, sample_locs_8x[3]); |
| radeon_emit(cs, sample_locs_8x[7]); |
| break; |
| case 16: |
| radeon_set_context_reg_seq(cs, R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, 16); |
| radeon_emit(cs, sample_locs_16x[0]); |
| radeon_emit(cs, sample_locs_16x[4]); |
| radeon_emit(cs, sample_locs_16x[8]); |
| radeon_emit(cs, sample_locs_16x[12]); |
| radeon_emit(cs, sample_locs_16x[1]); |
| radeon_emit(cs, sample_locs_16x[5]); |
| radeon_emit(cs, sample_locs_16x[9]); |
| radeon_emit(cs, sample_locs_16x[13]); |
| radeon_emit(cs, sample_locs_16x[2]); |
| radeon_emit(cs, sample_locs_16x[6]); |
| radeon_emit(cs, sample_locs_16x[10]); |
| radeon_emit(cs, sample_locs_16x[14]); |
| radeon_emit(cs, sample_locs_16x[3]); |
| radeon_emit(cs, sample_locs_16x[7]); |
| radeon_emit(cs, sample_locs_16x[11]); |
| radeon_emit(cs, sample_locs_16x[15]); |
| break; |
| } |
| } |
| |
| void si_init_msaa_functions(struct si_context *sctx) |
| { |
| int i; |
| |
| sctx->b.b.get_sample_position = si_get_sample_position; |
| |
| si_get_sample_position(&sctx->b.b, 1, 0, sctx->sample_locations_1x[0]); |
| |
| for (i = 0; i < 2; i++) |
| si_get_sample_position(&sctx->b.b, 2, i, sctx->sample_locations_2x[i]); |
| for (i = 0; i < 4; i++) |
| si_get_sample_position(&sctx->b.b, 4, i, sctx->sample_locations_4x[i]); |
| for (i = 0; i < 8; i++) |
| si_get_sample_position(&sctx->b.b, 8, i, sctx->sample_locations_8x[i]); |
| for (i = 0; i < 16; i++) |
| si_get_sample_position(&sctx->b.b, 16, i, sctx->sample_locations_16x[i]); |
| } |
