brw_vs_surface_state.c revision 73de09f265cb1c66d70fd9eb92021882bfbbbef6
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 "shader/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_surface_key key; 109 struct brw_vertex_program *vp = 110 (struct brw_vertex_program *) brw->vertex_program; 111 const struct gl_program_parameter_list *params = vp->program.Base.Parameters; 112 113 assert(surf == 0); 114 115 /* If there's no constant buffer, then no surface BO is needed to point at 116 * it. 117 */ 118 if (brw->vs.const_bo == NULL) { 119 drm_intel_bo_unreference(brw->vs.surf_bo[surf]); 120 brw->vs.surf_bo[surf] = NULL; 121 return; 122 } 123 124 memset(&key, 0, sizeof(key)); 125 126 key.format = MESA_FORMAT_RGBA_FLOAT32; 127 key.internal_format = GL_RGBA; 128 key.bo = brw->vs.const_bo; 129 key.depthmode = GL_NONE; 130 key.pitch = params->NumParameters; 131 key.width = params->NumParameters; 132 key.height = 1; 133 key.depth = 1; 134 key.cpp = 16; 135 136 /* 137 printf("%s:\n", __FUNCTION__); 138 printf(" width %d height %d depth %d cpp %d pitch %d\n", 139 key.width, key.height, key.depth, key.cpp, key.pitch); 140 */ 141 142 drm_intel_bo_unreference(brw->vs.surf_bo[surf]); 143 brw->vs.surf_bo[surf] = brw_search_cache(&brw->surface_cache, 144 BRW_SS_SURFACE, 145 &key, sizeof(key), 146 &key.bo, 1, 147 NULL); 148 if (brw->vs.surf_bo[surf] == NULL) { 149 brw->vs.surf_bo[surf] = brw_create_constant_surface(brw, &key); 150 } 151} 152 153 154static void 155prepare_vs_surfaces(struct brw_context *brw) 156{ 157 GLcontext *ctx = &brw->intel.ctx; 158 int i; 159 int nr_surfaces = 0; 160 161 brw_update_vs_constant_surface(ctx, SURF_INDEX_VERT_CONST_BUFFER); 162 163 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 164 if (brw->vs.surf_bo[i] != NULL) { 165 nr_surfaces = i + 1; 166 } 167 } 168 169 if (brw->vs.nr_surfaces != nr_surfaces) { 170 brw->state.dirty.brw |= BRW_NEW_NR_VS_SURFACES; 171 brw->vs.nr_surfaces = nr_surfaces; 172 } 173 174 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 175 brw_add_validated_bo(brw, brw->vs.surf_bo[i]); 176 } 177} 178 179/** 180 * Vertex shader surfaces (constant buffer). 181 * 182 * This consumes the state updates for the constant buffer needing 183 * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and 184 * CACHE_NEW_SURF_BIND for the binding table upload. 185 */ 186static void upload_vs_surfaces(struct brw_context *brw) 187{ 188 uint32_t *bind; 189 int i; 190 191 /* BRW_NEW_NR_VS_SURFACES */ 192 if (brw->vs.nr_surfaces == 0) { 193 if (brw->vs.bind_bo) { 194 drm_intel_bo_unreference(brw->vs.bind_bo); 195 brw->vs.bind_bo = NULL; 196 brw->state.dirty.brw |= BRW_NEW_BINDING_TABLE; 197 } 198 return; 199 } 200 201 /* Might want to calculate nr_surfaces first, to avoid taking up so much 202 * space for the binding table. (once we have vs samplers) 203 */ 204 bind = brw_state_batch(brw, sizeof(uint32_t) * BRW_VS_MAX_SURF, 205 32, &brw->vs.bind_bo, &brw->vs.bind_bo_offset); 206 207 for (i = 0; i < BRW_VS_MAX_SURF; i++) { 208 /* BRW_NEW_VS_CONSTBUF */ 209 if (brw->vs.surf_bo[i]) { 210 drm_intel_bo_emit_reloc(brw->vs.bind_bo, 211 brw->vs.bind_bo_offset + i * sizeof(uint32_t), 212 brw->vs.surf_bo[i], 0, 213 I915_GEM_DOMAIN_INSTRUCTION, 0); 214 bind[i] = brw->vs.surf_bo[i]->offset; 215 } else { 216 bind[i] = 0; 217 } 218 } 219 220 brw->state.dirty.brw |= BRW_NEW_BINDING_TABLE; 221} 222 223const struct brw_tracked_state brw_vs_surfaces = { 224 .dirty = { 225 .mesa = 0, 226 .brw = (BRW_NEW_VS_CONSTBUF | 227 BRW_NEW_NR_VS_SURFACES | 228 BRW_NEW_BATCH), 229 .cache = 0 230 }, 231 .prepare = prepare_vs_surfaces, 232 .emit = upload_vs_surfaces, 233}; 234