1 /* 2 * Copyright 2012 Intel Corporation 3 * 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: 10 * 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 13 * Software. 14 * 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 21 * IN THE SOFTWARE. 22 */ 23 24 #include "intel_batchbuffer.h" 25 26 #include "brw_context.h" 27 #include "brw_defines.h" 28 #include "brw_multisample_state.h" 29 30 /** 31 * 3DSTATE_MULTISAMPLE 32 */ 33 void 34 gen8_emit_3dstate_multisample(struct brw_context *brw, unsigned num_samples) 35 { 36 assert(num_samples <= 16); 37 38 unsigned log2_samples = ffs(MAX2(num_samples, 1)) - 1; 39 40 BEGIN_BATCH(2); 41 OUT_BATCH(GEN8_3DSTATE_MULTISAMPLE << 16 | (2 - 2)); 42 OUT_BATCH(MS_PIXEL_LOCATION_CENTER | log2_samples << 1); 43 ADVANCE_BATCH(); 44 } 45 46 /** 47 * 3DSTATE_SAMPLE_PATTERN 48 */ 49 void 50 gen8_emit_3dstate_sample_pattern(struct brw_context *brw) 51 { 52 BEGIN_BATCH(9); 53 OUT_BATCH(_3DSTATE_SAMPLE_PATTERN << 16 | (9 - 2)); 54 55 /* 16x MSAA */ 56 OUT_BATCH(brw_multisample_positions_16x[0]); /* positions 3, 2, 1, 0 */ 57 OUT_BATCH(brw_multisample_positions_16x[1]); /* positions 7, 6, 5, 4 */ 58 OUT_BATCH(brw_multisample_positions_16x[2]); /* positions 11, 10, 9, 8 */ 59 OUT_BATCH(brw_multisample_positions_16x[3]); /* positions 15, 14, 13, 12 */ 60 61 /* 8x MSAA */ 62 OUT_BATCH(brw_multisample_positions_8x[1]); /* sample positions 7654 */ 63 OUT_BATCH(brw_multisample_positions_8x[0]); /* sample positions 3210 */ 64 65 /* 4x MSAA */ 66 OUT_BATCH(brw_multisample_positions_4x); 67 68 /* 1x and 2x MSAA */ 69 OUT_BATCH(brw_multisample_positions_1x_2x); 70 ADVANCE_BATCH(); 71 } 72 73 74 static void 75 upload_multisample_state(struct brw_context *brw) 76 { 77 gen8_emit_3dstate_multisample(brw, brw->num_samples); 78 gen6_emit_3dstate_sample_mask(brw, gen6_determine_sample_mask(brw)); 79 } 80 81 const struct brw_tracked_state gen8_multisample_state = { 82 .dirty = { 83 .mesa = _NEW_MULTISAMPLE, 84 .brw = BRW_NEW_BLORP | 85 BRW_NEW_CONTEXT | 86 BRW_NEW_NUM_SAMPLES, 87 }, 88 .emit = upload_multisample_state 89 }; 90
