1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com> 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright 2009 Marek Olšák <maraeo@gmail.com> 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * on the rights to use, copy, modify, merge, publish, distribute, sub 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * license, and/or sell copies of the Software, and to permit persons to whom 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the Software is furnished to do so, subject to the following conditions: 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the next 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * paragraph) shall be included in all copies or substantial portions of the 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software. 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * USE OR OTHER DEALINGS IN THE SOFTWARE. */ 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "r300_context.h" 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "r300_reg.h" 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "r300_fs.h" 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "util/u_format.h" 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "util/u_mm.h" 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org HiZ rules - taken from various docs 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 1. HiZ only works on depth values 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 2. Cannot HiZ if stencil fail or zfail is !KEEP 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 3. on R300/400, HiZ is disabled if depth test is EQUAL 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 4. comparison changes without clears usually mean disabling HiZ 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org*/ 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*****************************************************************************/ 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* The HyperZ setup */ 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*****************************************************************************/ 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic enum r300_hiz_func r300_get_hiz_func(struct r300_context *r300) 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_dsa_state *dsa = r300->dsa_state.state; 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org switch (dsa->dsa.depth.func) { 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_NEVER: 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_EQUAL: 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_NOTEQUAL: 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_ALWAYS: 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org default: 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Guess MAX for uncertain cases. */ 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_LESS: 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_LEQUAL: 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return HIZ_FUNC_MAX; 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_GREATER: 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case PIPE_FUNC_GEQUAL: 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return HIZ_FUNC_MIN; 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* Return what's used for the depth test (either minimum or maximum). */ 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic unsigned r300_get_sc_hz_max(struct r300_context *r300) 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_dsa_state *dsa = r300->dsa_state.state; 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned func = dsa->dsa.depth.func; 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return func >= PIPE_FUNC_GREATER ? R300_SC_HYPERZ_MAX : R300_SC_HYPERZ_MIN; 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_is_hiz_func_valid(struct r300_context *r300) 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_dsa_state *dsa = r300->dsa_state.state; 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org unsigned func = dsa->dsa.depth.func; 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hiz_func == HIZ_FUNC_NONE) 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return TRUE; 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* func1 is less/lessthan */ 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hiz_func == HIZ_FUNC_MAX && 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (func == PIPE_FUNC_GEQUAL || func == PIPE_FUNC_GREATER)) 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* func1 is greater/greaterthan */ 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hiz_func == HIZ_FUNC_MIN && 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (func == PIPE_FUNC_LESS || func == PIPE_FUNC_LEQUAL)) 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return TRUE; 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_dsa_stencil_op_not_keep(struct pipe_stencil_state *s) 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return s->enabled && (s->fail_op != PIPE_STENCIL_OP_KEEP || 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org s->zfail_op != PIPE_STENCIL_OP_KEEP); 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_hiz_allowed(struct r300_context *r300) 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_dsa_state *dsa = r300->dsa_state.state; 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_screen *r300screen = r300->screen; 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300_fragment_shader_writes_depth(r300_fs(r300))) 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->query_current) 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If the depth function is inverted, HiZ must be disabled. */ 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!r300_is_hiz_func_valid(r300)) 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* if stencil fail/zfail op is not KEEP */ 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300_dsa_stencil_op_not_keep(&dsa->dsa.stencil[0]) || 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_dsa_stencil_op_not_keep(&dsa->dsa.stencil[1])) 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (dsa->dsa.depth.enabled) { 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* if depth func is EQUAL pre-r500 */ 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (dsa->dsa.depth.func == PIPE_FUNC_EQUAL && !r300screen->caps.is_r500) 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* if depth func is NOTEQUAL */ 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (dsa->dsa.depth.func == PIPE_FUNC_NOTEQUAL) 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return TRUE; 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void r300_update_hyperz(struct r300_context* r300) 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_hyperz_state *z = 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (struct r300_hyperz_state*)r300->hyperz_state.state; 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct pipe_framebuffer_state *fb = 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (struct pipe_framebuffer_state*)r300->fb_state.state; 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_dsa_state *dsa = r300->dsa_state.state; 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_resource *zstex = 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fb->zsbuf ? r300_resource(fb->zsbuf->texture) : NULL; 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->gb_z_peq_config = 0; 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl = 0; 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->sc_hyperz = R300_SC_HYPERZ_ADJ_2; 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->flush = 0; 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->cbzb_clear) { 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R300_ZB_CB_CLEAR_CACHE_LINE_WRITE_ONLY; 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!zstex || !r300->hyperz_enabled) 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Set the size of ZMASK tiles. */ 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (zstex->tex.zcomp8x8[fb->zsbuf->u.tex.level]) { 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->gb_z_peq_config |= R300_GB_Z_PEQ_CONFIG_Z_PEQ_SIZE_8_8; 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* R500-specific features and optimizations. */ 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->screen->caps.is_r500) { 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R500_PEQ_PACKING_ENABLE | 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org R500_COVERED_PTR_MASKING_ENABLE; 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Setup decompression if needed. No other HyperZ setting is required. */ 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->zmask_decompress) { 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R300_FAST_FILL_ENABLE | 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org R300_RD_COMP_ENABLE; 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Do not set anything if depth and stencil tests are off. */ 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!dsa->dsa.depth.enabled && 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org !dsa->dsa.stencil[0].enabled && 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org !dsa->dsa.stencil[1].enabled) { 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(!dsa->dsa.depth.writemask); 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Zbuffer compression. */ 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->zmask_in_use && !r300->locked_zbuffer) { 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R300_FAST_FILL_ENABLE | 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org R300_RD_COMP_ENABLE | 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org R300_WR_COMP_ENABLE; 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* HiZ. */ 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hiz_in_use && !r300->locked_zbuffer) { 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* HiZ cannot be used under some circumstances. */ 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!r300_hiz_allowed(r300)) { 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If writemask is disabled, the HiZ memory will not be changed, 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * so we can keep its content for later. */ 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (dsa->dsa.depth.writemask) { 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300->hiz_in_use = FALSE; 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org DBG(r300, DBG_HYPERZ, "r300: Z-func: %i\n", dsa->dsa.depth.func); 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Set the HiZ function if needed. */ 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hiz_func == HIZ_FUNC_NONE) { 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300->hiz_func = r300_get_hiz_func(r300); 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Setup the HiZ bits. */ 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R300_HIZ_ENABLE | 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (r300->hiz_func == HIZ_FUNC_MIN ? R300_HIZ_MIN : R300_HIZ_MAX); 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->sc_hyperz |= R300_SC_HYPERZ_ENABLE | 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_get_sc_hz_max(r300); 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->screen->caps.is_r500) { 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org z->zb_bw_cntl |= R500_HIZ_EQUAL_REJECT_ENABLE; 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 218f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*****************************************************************************/ 219f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* The ZTOP state */ 220f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/*****************************************************************************/ 221f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 222f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_dsa_writes_stencil( 223f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct pipe_stencil_state *s) 224f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 225f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return s->enabled && s->writemask && 226f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (s->fail_op != PIPE_STENCIL_OP_KEEP || 227f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org s->zfail_op != PIPE_STENCIL_OP_KEEP || 228f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org s->zpass_op != PIPE_STENCIL_OP_KEEP); 229f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 230f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 231f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_dsa_writes_depth_stencil( 232f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct pipe_depth_stencil_alpha_state *dsa) 233f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 234f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* We are interested only in the cases when a depth or stencil value 235f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * can be changed. */ 236f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 237f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (dsa->depth.enabled && dsa->depth.writemask && 238f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dsa->depth.func != PIPE_FUNC_NEVER) 239f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return TRUE; 240f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 241f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300_dsa_writes_stencil(&dsa->stencil[0]) || 242f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_dsa_writes_stencil(&dsa->stencil[1])) 243f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return TRUE; 244f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 245f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return FALSE; 246f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 247f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 248f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic boolean r300_dsa_alpha_test_enabled( 249f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct pipe_depth_stencil_alpha_state *dsa) 250f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 251f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* We are interested only in the cases when alpha testing can kill 252f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * a fragment. */ 253f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 254f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return dsa->alpha.enabled && dsa->alpha.func != PIPE_FUNC_ALWAYS; 255f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 256f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 257f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void r300_update_ztop(struct r300_context* r300) 258f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 259f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct r300_ztop_state* ztop_state = 260f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (struct r300_ztop_state*)r300->ztop_state.state; 261f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t old_ztop = ztop_state->z_buffer_top; 262f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 263f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* This is important enough that I felt it warranted a comment. 264f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 265f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * According to the docs, these are the conditions where ZTOP must be 266f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * disabled: 267f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 1) Alpha testing enabled 268f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 2) Texture kill instructions in fragment shader 269f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3) Chroma key culling enabled 270f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4) W-buffering enabled 271f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 272f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The docs claim that for the first three cases, if no ZS writes happen, 273f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * then ZTOP can be used. 274f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 275f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * (3) will never apply since we do not support chroma-keyed operations. 276f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * (4) will need to be re-examined (and this comment updated) if/when 277f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Hyper-Z becomes supported. 278f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 279f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Additionally, the following conditions require disabled ZTOP: 280f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 5) Depth writes in fragment shader 281f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 6) Outstanding occlusion queries 282f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 283f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * This register causes stalls all the way from SC to CB when changed, 284f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * but it is buffered on-chip so it does not hurt to write it if it has 285f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * not changed. 286f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 287f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * ~C. 288f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 289f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 290f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* ZS writes */ 291f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300_dsa_writes_depth_stencil(r300->dsa_state.state) && 292f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (r300_dsa_alpha_test_enabled(r300->dsa_state.state) || /* (1) */ 293f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_fs(r300)->shader->info.uses_kill)) { /* (2) */ 294f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ztop_state->z_buffer_top = R300_ZTOP_DISABLE; 295f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else if (r300_fragment_shader_writes_depth(r300_fs(r300))) { /* (5) */ 296f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ztop_state->z_buffer_top = R300_ZTOP_DISABLE; 297f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else if (r300->query_current) { /* (6) */ 298f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ztop_state->z_buffer_top = R300_ZTOP_DISABLE; 299f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 300f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ztop_state->z_buffer_top = R300_ZTOP_ENABLE; 301f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 302f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ztop_state->z_buffer_top != old_ztop) 303f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_mark_atom_dirty(r300, &r300->ztop_state); 304f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 305f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 306f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid r300_update_hyperz_state(struct r300_context* r300) 307f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 308f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_update_ztop(r300); 309f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 310f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (r300->hyperz_state.dirty) { 311f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org r300_update_hyperz(r300); 312f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 313f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 314