brw_vs_surface_state.c revision 8654931d117f178fa575d3fdc5bbff9f8bf9e816
1/* 2 Copyright (C) Intel Corp. 2006. All Rights Reserved. 3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to 4 develop this 3D driver. 5 6 Permission is hereby granted, free of charge, to any person obtaining 7 a copy of this software and associated documentation files (the 8 "Software"), to deal in the Software without restriction, including 9 without limitation the rights to use, copy, modify, merge, publish, 10 distribute, sublicense, and/or sell copies of the Software, and to 11 permit persons to whom the Software is furnished to do so, subject to 12 the following conditions: 13 14 The above copyright notice and this permission notice (including the 15 next paragraph) shall be included in all copies or substantial 16 portions of the Software. 17 18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 26 **********************************************************************/ 27 /* 28 * Authors: 29 * Keith Whitwell <keith@tungstengraphics.com> 30 */ 31 32#include "main/mtypes.h" 33#include "main/texstore.h" 34#include "program/prog_parameter.h" 35 36#include "brw_context.h" 37#include "brw_state.h" 38 39/* Creates a new VS constant buffer reflecting the current VS program's 40 * constants, if needed by the VS program. 41 * 42 * Otherwise, constants go through the CURBEs using the brw_constant_buffer 43 * state atom. 44 */ 45static void 46prepare_vs_constants(struct brw_context *brw) 47{ 48 struct gl_context *ctx = &brw->intel.ctx; 49 struct intel_context *intel = &brw->intel; 50 /* BRW_NEW_VERTEX_PROGRAM */ 51 struct brw_vertex_program *vp = 52 (struct brw_vertex_program *) brw->vertex_program; 53 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 54 int i; 55 56 if (vp->program.IsNVProgram) 57 _mesa_load_tracked_matrices(ctx); 58 59 /* Updates the ParamaterValues[i] pointers for all parameters of the 60 * basic type of PROGRAM_STATE_VAR. 61 */ 62 _mesa_load_state_parameters(&brw->intel.ctx, vp->program.Base.Parameters); 63 64 /* CACHE_NEW_VS_PROG */ 65 if (!brw->vs.prog_data->nr_pull_params) { 66 if (brw->vs.const_bo) { 67 drm_intel_bo_unreference(brw->vs.const_bo); 68 brw->vs.const_bo = NULL; 69 brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF; 70 } 71 return; 72 } 73 74 /* _NEW_PROGRAM_CONSTANTS */ 75 drm_intel_bo_unreference(brw->vs.const_bo); 76 brw->vs.const_bo = drm_intel_bo_alloc(intel->bufmgr, "vp_const_buffer", 77 brw->vs.prog_data->nr_pull_params * 4, 78 64); 79 80 drm_intel_gem_bo_map_gtt(brw->vs.const_bo); 81 for (i = 0; i < brw->vs.prog_data->nr_pull_params; i++) { 82 memcpy(brw->vs.const_bo->virtual + i * 4, 83 brw->vs.prog_data->pull_param[i], 84 4); 85 } 86 87 if (0) { 88 for (i = 0; i < params->NumParameters; i++) { 89 float *row = (float *)brw->vs.const_bo->virtual + i * 4; 90 printf("vs const surface %3d: %4.3f %4.3f %4.3f %4.3f\n", 91 i, row[0], row[1], row[2], row[3]); 92 } 93 } 94 95 drm_intel_gem_bo_unmap_gtt(brw->vs.const_bo); 96 brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF; 97} 98 99const struct brw_tracked_state brw_vs_constants = { 100 .dirty = { 101 .mesa = (_NEW_PROGRAM_CONSTANTS), 102 .brw = (BRW_NEW_VERTEX_PROGRAM), 103 .cache = CACHE_NEW_VS_PROG, 104 }, 105 .prepare = prepare_vs_constants, 106}; 107 108/** 109 * Update the surface state for a VS constant buffer. 110 * 111 * Sets brw->vs.surf_bo[surf] and brw->vp->const_buffer. 112 */ 113static void 114brw_update_vs_constant_surface( struct gl_context *ctx, 115 GLuint surf) 116{ 117 struct brw_context *brw = brw_context(ctx); 118 struct intel_context *intel = &brw->intel; 119 struct brw_vertex_program *vp = 120 (struct brw_vertex_program *) brw->vertex_program; 121 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 122 123 assert(surf == 0); 124 125 /* If there's no constant buffer, then no surface BO is needed to point at 126 * it. 127 */ 128 if (brw->vs.const_bo == NULL) { 129 brw->vs.surf_offset[surf] = 0; 130 return; 131 } 132 133 if (intel->gen >= 7) { 134 gen7_create_constant_surface(brw, brw->vs.const_bo, params->NumParameters, 135 &brw->vs.surf_offset[surf]); 136 } else { 137 brw_create_constant_surface(brw, brw->vs.const_bo, params->NumParameters, 138 &brw->vs.surf_offset[surf]); 139 } 140} 141 142 143static void 144prepare_vs_surfaces(struct brw_context *brw) 145{ 146 int nr_surfaces = 0; 147 148 if (brw->vs.const_bo) { 149 brw_add_validated_bo(brw, brw->vs.const_bo); 150 nr_surfaces = 1; 151 } 152 153 if (brw->vs.nr_surfaces != nr_surfaces) { 154 brw->state.dirty.brw |= BRW_NEW_NR_VS_SURFACES; 155 brw->vs.nr_surfaces = nr_surfaces; 156 } 157} 158 159/** 160 * Vertex shader surfaces (constant buffer). 161 * 162 * This consumes the state updates for the constant buffer needing 163 * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and 164 * CACHE_NEW_SURF_BIND for the binding table upload. 165 */ 166static void upload_vs_surfaces(struct brw_context *brw) 167{ 168 struct gl_context *ctx = &brw->intel.ctx; 169 uint32_t *bind; 170 int i; 171 172 /* BRW_NEW_NR_VS_SURFACES */ 173 if (brw->vs.nr_surfaces == 0) { 174 if (brw->vs.bind_bo_offset) { 175 brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE; 176 } 177 brw->vs.bind_bo_offset = 0; 178 return; 179 } 180 181 brw_update_vs_constant_surface(ctx, SURF_INDEX_VERT_CONST_BUFFER); 182 183 /* Might want to calculate nr_surfaces first, to avoid taking up so much 184 * space for the binding table. (once we have vs samplers) 185 */ 186 bind = brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 187 sizeof(uint32_t) * BRW_VS_MAX_SURF, 188 32, &brw->vs.bind_bo_offset); 189 190 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 191 /* BRW_NEW_VS_CONSTBUF */ 192 bind[i] = brw->vs.surf_offset[i]; 193 } 194 195 brw->state.dirty.brw |= BRW_NEW_VS_BINDING_TABLE; 196} 197 198const struct brw_tracked_state brw_vs_surfaces = { 199 .dirty = { 200 .mesa = 0, 201 .brw = (BRW_NEW_VS_CONSTBUF | 202 BRW_NEW_NR_VS_SURFACES | 203 BRW_NEW_BATCH), 204 .cache = 0 205 }, 206 .prepare = prepare_vs_surfaces, 207 .emit = upload_vs_surfaces, 208}; 209