1 /* 2 * Copyright 2011 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 "brw_context.h" 25 #include "brw_state.h" 26 #include "brw_defines.h" 27 #include "brw_util.h" 28 #include "main/macros.h" 29 #include "main/fbobject.h" 30 #include "intel_batchbuffer.h" 31 32 static void 33 upload_sbe_state(struct brw_context *brw) 34 { 35 struct intel_context *intel = &brw->intel; 36 struct gl_context *ctx = &intel->ctx; 37 /* BRW_NEW_FRAGMENT_PROGRAM */ 38 uint32_t num_outputs = _mesa_bitcount_64(brw->fragment_program->Base.InputsRead); 39 /* _NEW_LIGHT */ 40 bool shade_model_flat = ctx->Light.ShadeModel == GL_FLAT; 41 uint32_t dw1, dw10, dw11; 42 int i; 43 int attr = 0, input_index = 0; 44 int urb_entry_read_offset = 1; 45 uint16_t attr_overrides[FRAG_ATTRIB_MAX]; 46 /* _NEW_BUFFERS */ 47 bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer); 48 uint32_t point_sprite_origin; 49 50 /* FINISHME: Attribute Swizzle Control Mode? */ 51 dw1 = GEN7_SBE_SWIZZLE_ENABLE | num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT; 52 53 /* _NEW_POINT 54 * 55 * Window coordinates in an FBO are inverted, which means point 56 * sprite origin must be inverted. 57 */ 58 if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) { 59 point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT; 60 } else { 61 point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT; 62 } 63 dw1 |= point_sprite_origin; 64 65 66 dw10 = 0; 67 dw11 = 0; 68 69 /* Create the mapping from the FS inputs we produce to the VS outputs 70 * they source from. 71 */ 72 uint32_t max_source_attr = 0; 73 for (; attr < FRAG_ATTRIB_MAX; attr++) { 74 enum glsl_interp_qualifier interp_qualifier = 75 brw->fragment_program->InterpQualifier[attr]; 76 bool is_gl_Color = attr == FRAG_ATTRIB_COL0 || attr == FRAG_ATTRIB_COL1; 77 78 if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr))) 79 continue; 80 81 if (ctx->Point.PointSprite && 82 attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7 && 83 ctx->Point.CoordReplace[attr - FRAG_ATTRIB_TEX0]) { 84 dw10 |= (1 << input_index); 85 } 86 87 if (attr == FRAG_ATTRIB_PNTC) 88 dw10 |= (1 << input_index); 89 90 /* flat shading */ 91 if (interp_qualifier == INTERP_QUALIFIER_FLAT || 92 (shade_model_flat && is_gl_Color && 93 interp_qualifier == INTERP_QUALIFIER_NONE)) 94 dw11 |= (1 << input_index); 95 96 /* The hardware can only do the overrides on 16 overrides at a 97 * time, and the other up to 16 have to be lined up so that the 98 * input index = the output index. We'll need to do some 99 * tweaking to make sure that's the case. 100 */ 101 assert(input_index < 16 || attr == input_index); 102 103 /* CACHE_NEW_VS_PROG | _NEW_LIGHT | _NEW_PROGRAM */ 104 attr_overrides[input_index++] = 105 get_attr_override(&brw->vs.prog_data->vue_map, 106 urb_entry_read_offset, attr, 107 ctx->VertexProgram._TwoSideEnabled, 108 &max_source_attr); 109 } 110 111 /* From the Ivy Bridge PRM, Volume 2, Part 1, documentation for 112 * 3DSTATE_SBE DWord 1 bits 15:11, "Vertex URB Entry Read Length": 113 * 114 * "This field should be set to the minimum length required to read the 115 * maximum source attribute. The maximum source attribute is indicated 116 * by the maximum value of the enabled Attribute # Source Attribute if 117 * Attribute Swizzle Enable is set, Number of Output Attributes-1 if 118 * enable is not set. 119 * 120 * read_length = ceiling((max_source_attr + 1) / 2)" 121 */ 122 uint32_t urb_entry_read_length = ALIGN(max_source_attr + 1, 2) / 2; 123 dw1 |= urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT | 124 urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT; 125 126 for (; input_index < FRAG_ATTRIB_MAX; input_index++) 127 attr_overrides[input_index] = 0; 128 129 BEGIN_BATCH(14); 130 OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2)); 131 OUT_BATCH(dw1); 132 133 /* Output dwords 2 through 9 */ 134 for (i = 0; i < 8; i++) { 135 OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16); 136 } 137 138 OUT_BATCH(dw10); /* point sprite texcoord bitmask */ 139 OUT_BATCH(dw11); /* constant interp bitmask */ 140 OUT_BATCH(0); /* wrapshortest enables 0-7 */ 141 OUT_BATCH(0); /* wrapshortest enables 8-15 */ 142 ADVANCE_BATCH(); 143 } 144 145 const struct brw_tracked_state gen7_sbe_state = { 146 .dirty = { 147 .mesa = (_NEW_BUFFERS | 148 _NEW_LIGHT | 149 _NEW_POINT | 150 _NEW_PROGRAM), 151 .brw = (BRW_NEW_CONTEXT | 152 BRW_NEW_FRAGMENT_PROGRAM), 153 .cache = CACHE_NEW_VS_PROG 154 }, 155 .emit = upload_sbe_state, 156 }; 157 158 static void 159 upload_sf_state(struct brw_context *brw) 160 { 161 struct intel_context *intel = &brw->intel; 162 struct gl_context *ctx = &intel->ctx; 163 uint32_t dw1, dw2, dw3; 164 float point_size; 165 /* _NEW_BUFFERS */ 166 bool render_to_fbo = _mesa_is_user_fbo(brw->intel.ctx.DrawBuffer); 167 bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1; 168 169 dw1 = GEN6_SF_STATISTICS_ENABLE | 170 GEN6_SF_VIEWPORT_TRANSFORM_ENABLE; 171 172 /* _NEW_BUFFERS */ 173 dw1 |= (brw_depthbuffer_format(brw) << GEN7_SF_DEPTH_BUFFER_SURFACE_FORMAT_SHIFT); 174 175 /* _NEW_POLYGON */ 176 if ((ctx->Polygon.FrontFace == GL_CCW) ^ render_to_fbo) 177 dw1 |= GEN6_SF_WINDING_CCW; 178 179 if (ctx->Polygon.OffsetFill) 180 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID; 181 182 if (ctx->Polygon.OffsetLine) 183 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME; 184 185 if (ctx->Polygon.OffsetPoint) 186 dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT; 187 188 switch (ctx->Polygon.FrontMode) { 189 case GL_FILL: 190 dw1 |= GEN6_SF_FRONT_SOLID; 191 break; 192 193 case GL_LINE: 194 dw1 |= GEN6_SF_FRONT_WIREFRAME; 195 break; 196 197 case GL_POINT: 198 dw1 |= GEN6_SF_FRONT_POINT; 199 break; 200 201 default: 202 assert(0); 203 break; 204 } 205 206 switch (ctx->Polygon.BackMode) { 207 case GL_FILL: 208 dw1 |= GEN6_SF_BACK_SOLID; 209 break; 210 211 case GL_LINE: 212 dw1 |= GEN6_SF_BACK_WIREFRAME; 213 break; 214 215 case GL_POINT: 216 dw1 |= GEN6_SF_BACK_POINT; 217 break; 218 219 default: 220 assert(0); 221 break; 222 } 223 224 dw2 = 0; 225 226 if (ctx->Polygon.CullFlag) { 227 switch (ctx->Polygon.CullFaceMode) { 228 case GL_FRONT: 229 dw2 |= GEN6_SF_CULL_FRONT; 230 break; 231 case GL_BACK: 232 dw2 |= GEN6_SF_CULL_BACK; 233 break; 234 case GL_FRONT_AND_BACK: 235 dw2 |= GEN6_SF_CULL_BOTH; 236 break; 237 default: 238 assert(0); 239 break; 240 } 241 } else { 242 dw2 |= GEN6_SF_CULL_NONE; 243 } 244 245 /* _NEW_SCISSOR */ 246 if (ctx->Scissor.Enabled) 247 dw2 |= GEN6_SF_SCISSOR_ENABLE; 248 249 /* _NEW_LINE */ 250 { 251 uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7); 252 /* TODO: line width of 0 is not allowed when MSAA enabled */ 253 if (line_width_u3_7 == 0) 254 line_width_u3_7 = 1; 255 dw2 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT; 256 } 257 if (ctx->Line.SmoothFlag) { 258 dw2 |= GEN6_SF_LINE_AA_ENABLE; 259 dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0; 260 } 261 if (ctx->Line.StippleFlag && intel->is_haswell) { 262 dw2 |= HSW_SF_LINE_STIPPLE_ENABLE; 263 } 264 /* _NEW_MULTISAMPLE */ 265 if (multisampled_fbo && ctx->Multisample.Enabled) 266 dw2 |= GEN6_SF_MSRAST_ON_PATTERN; 267 268 /* FINISHME: Last Pixel Enable? Vertex Sub Pixel Precision Select? 269 */ 270 271 dw3 = GEN6_SF_LINE_AA_MODE_TRUE; 272 273 /* _NEW_PROGRAM | _NEW_POINT */ 274 if (!(ctx->VertexProgram.PointSizeEnabled || ctx->Point._Attenuated)) 275 dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH; 276 277 /* Clamp to ARB_point_parameters user limits */ 278 point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize); 279 280 /* Clamp to the hardware limits and convert to fixed point */ 281 dw3 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3); 282 283 /* _NEW_LIGHT */ 284 if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) { 285 dw3 |= 286 (2 << GEN6_SF_TRI_PROVOKE_SHIFT) | 287 (2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) | 288 (1 << GEN6_SF_LINE_PROVOKE_SHIFT); 289 } else { 290 dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT); 291 } 292 293 BEGIN_BATCH(7); 294 OUT_BATCH(_3DSTATE_SF << 16 | (7 - 2)); 295 OUT_BATCH(dw1); 296 OUT_BATCH(dw2); 297 OUT_BATCH(dw3); 298 OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */ 299 OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */ 300 OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */ 301 ADVANCE_BATCH(); 302 } 303 304 const struct brw_tracked_state gen7_sf_state = { 305 .dirty = { 306 .mesa = (_NEW_LIGHT | 307 _NEW_PROGRAM | 308 _NEW_POLYGON | 309 _NEW_LINE | 310 _NEW_SCISSOR | 311 _NEW_BUFFERS | 312 _NEW_POINT | 313 _NEW_MULTISAMPLE), 314 .brw = BRW_NEW_CONTEXT, 315 .cache = CACHE_NEW_VS_PROG 316 }, 317 .emit = upload_sf_state, 318 }; 319
