brw_vs_surface_state.c revision ca12aefdacd22fb42e3f1d3852db4c12de886554
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 GLcontext *ctx = &brw->intel.ctx; 49 struct intel_context *intel = &brw->intel; 50 struct brw_vertex_program *vp = 51 (struct brw_vertex_program *) brw->vertex_program; 52 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 53 const int size = params->NumParameters * 4 * sizeof(GLfloat); 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 /* BRW_NEW_VERTEX_PROGRAM */ 65 if (!vp->use_const_buffer) { 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 size, 64); 78 79 drm_intel_gem_bo_map_gtt(brw->vs.const_bo); 80 for (i = 0; i < params->NumParameters; i++) { 81 memcpy(brw->vs.const_bo->virtual + i * 4 * sizeof(float), 82 params->ParameterValues[i], 83 4 * sizeof(float)); 84 } 85 drm_intel_gem_bo_unmap_gtt(brw->vs.const_bo); 86 brw->state.dirty.brw |= BRW_NEW_VS_CONSTBUF; 87} 88 89const struct brw_tracked_state brw_vs_constants = { 90 .dirty = { 91 .mesa = (_NEW_PROGRAM_CONSTANTS), 92 .brw = (BRW_NEW_VERTEX_PROGRAM), 93 .cache = 0 94 }, 95 .prepare = prepare_vs_constants, 96}; 97 98/** 99 * Update the surface state for a VS constant buffer. 100 * 101 * Sets brw->vs.surf_bo[surf] and brw->vp->const_buffer. 102 */ 103static void 104brw_update_vs_constant_surface( GLcontext *ctx, 105 GLuint surf) 106{ 107 struct brw_context *brw = brw_context(ctx); 108 struct brw_vertex_program *vp = 109 (struct brw_vertex_program *) brw->vertex_program; 110 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 111 112 assert(surf == 0); 113 114 /* If there's no constant buffer, then no surface BO is needed to point at 115 * it. 116 */ 117 if (brw->vs.const_bo == NULL) { 118 drm_intel_bo_unreference(brw->vs.surf_bo[surf]); 119 brw->vs.surf_bo[surf] = NULL; 120 return; 121 } 122 123 brw_create_constant_surface(brw, brw->vs.const_bo, params->NumParameters, 124 &brw->vs.surf_bo[surf], 125 &brw->vs.surf_offset[surf]); 126} 127 128 129static void 130prepare_vs_surfaces(struct brw_context *brw) 131{ 132 int nr_surfaces = 0; 133 134 if (brw->vs.const_bo) { 135 brw_add_validated_bo(brw, brw->vs.const_bo); 136 nr_surfaces = 1; 137 } 138 139 if (brw->vs.nr_surfaces != nr_surfaces) { 140 brw->state.dirty.brw |= BRW_NEW_NR_VS_SURFACES; 141 brw->vs.nr_surfaces = nr_surfaces; 142 } 143} 144 145/** 146 * Vertex shader surfaces (constant buffer). 147 * 148 * This consumes the state updates for the constant buffer needing 149 * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and 150 * CACHE_NEW_SURF_BIND for the binding table upload. 151 */ 152static void upload_vs_surfaces(struct brw_context *brw) 153{ 154 GLcontext *ctx = &brw->intel.ctx; 155 uint32_t *bind; 156 int i; 157 158 /* BRW_NEW_NR_VS_SURFACES */ 159 if (brw->vs.nr_surfaces == 0) { 160 if (brw->vs.bind_bo) { 161 drm_intel_bo_unreference(brw->vs.bind_bo); 162 brw->vs.bind_bo = NULL; 163 brw->state.dirty.brw |= BRW_NEW_BINDING_TABLE; 164 } 165 return; 166 } 167 168 brw_update_vs_constant_surface(ctx, SURF_INDEX_VERT_CONST_BUFFER); 169 170 /* Might want to calculate nr_surfaces first, to avoid taking up so much 171 * space for the binding table. (once we have vs samplers) 172 */ 173 bind = brw_state_batch(brw, sizeof(uint32_t) * BRW_VS_MAX_SURF, 174 32, &brw->vs.bind_bo, &brw->vs.bind_bo_offset); 175 176 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 177 /* BRW_NEW_VS_CONSTBUF */ 178 if (brw->vs.surf_bo[i]) { 179 bind[i] = brw->vs.surf_offset[i]; 180 } else { 181 bind[i] = 0; 182 } 183 } 184 185 brw->state.dirty.brw |= BRW_NEW_BINDING_TABLE; 186} 187 188const struct brw_tracked_state brw_vs_surfaces = { 189 .dirty = { 190 .mesa = 0, 191 .brw = (BRW_NEW_VS_CONSTBUF | 192 BRW_NEW_NR_VS_SURFACES | 193 BRW_NEW_BATCH), 194 .cache = 0 195 }, 196 .prepare = prepare_vs_surfaces, 197 .emit = upload_vs_surfaces, 198}; 199