1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright © 2009 Intel Corporation 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and/or sell copies of the Software, and to permit persons to whom the 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software is furnished to do so, subject to the following conditions: 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the next 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * paragraph) shall be included in all copies or substantial portions of the 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software. 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IN THE SOFTWARE. 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Authors: 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Eric Anholt <eric@anholt.net> 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "brw_context.h" 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "brw_state.h" 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "brw_defines.h" 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "brw_util.h" 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/macros.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "main/fbobject.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "intel_batchbuffer.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Determine the appropriate attribute override value to store into the 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3DSTATE_SF structure for a given fragment shader attribute. The attribute 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * override value contains two pieces of information: the location of the 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * attribute in the VUE (relative to urb_entry_read_offset, see below), and a 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * flag indicating whether to "swizzle" the attribute based on the direction 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the triangle is facing. 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * If an attribute is "swizzled", then the given VUE location is used for 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * front-facing triangles, and the VUE location that immediately follows is 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * used for back-facing triangles. We use this to implement the mapping from 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * gl_FrontColor/gl_BackColor to gl_Color. 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * urb_entry_read_offset is the offset into the VUE at which the SF unit is 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * being instructed to begin reading attribute data. It can be set to a 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * nonzero value to prevent the SF unit from wasting time reading elements of 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the VUE that are not needed by the fragment shader. It is measured in 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 256-bit increments. 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orguint32_t 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgget_attr_override(struct brw_vue_map *vue_map, int urb_entry_read_offset, 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int fs_attr, bool two_side_color, uint32_t *max_source_attr) 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int vs_attr = _mesa_frag_attrib_to_vert_result(fs_attr); 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (vs_attr < 0 || vs_attr == VERT_RESULT_HPOS) { 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* These attributes will be overwritten by the fragment shader's 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * interpolation code (see emit_interp() in brw_wm_fp.c), so just let 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * them reference the first available attribute. 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return 0; 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Find the VUE slot for this attribute. */ 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int slot = vue_map->vert_result_to_slot[vs_attr]; 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If there was only a back color written but not front, use back 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * as the color instead of undefined 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (slot == -1 && vs_attr == VERT_RESULT_COL0) 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org slot = vue_map->vert_result_to_slot[VERT_RESULT_BFC0]; 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (slot == -1 && vs_attr == VERT_RESULT_COL1) 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org slot = vue_map->vert_result_to_slot[VERT_RESULT_BFC1]; 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (slot == -1) { 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* This attribute does not exist in the VUE--that means that the vertex 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * shader did not write to it. Behavior is undefined in this case, so 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * just reference the first available attribute. 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return 0; 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Compute the location of the attribute relative to urb_entry_read_offset. 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Each increment of urb_entry_read_offset represents a 256-bit value, so 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * it counts for two 128-bit VUE slots. 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int source_attr = slot - 2 * urb_entry_read_offset; 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(source_attr >= 0 && source_attr < 32); 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* If we are doing two-sided color, and the VUE slot following this one 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * represents a back-facing color, then we need to instruct the SF unit to 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * do back-facing swizzling. 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool swizzling = two_side_color && 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ((vue_map->slot_to_vert_result[slot] == VERT_RESULT_COL0 && 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org vue_map->slot_to_vert_result[slot+1] == VERT_RESULT_BFC0) || 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (vue_map->slot_to_vert_result[slot] == VERT_RESULT_COL1 && 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org vue_map->slot_to_vert_result[slot+1] == VERT_RESULT_BFC1)); 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Update max_source_attr. If swizzling, the SF will read this slot + 1. */ 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (*max_source_attr < source_attr + swizzling) 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org *max_source_attr = source_attr + swizzling; 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (swizzling) { 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return source_attr | 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (ATTRIBUTE_SWIZZLE_INPUTATTR_FACING << ATTRIBUTE_SWIZZLE_SHIFT); 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return source_attr; 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgupload_sf_state(struct brw_context *brw) 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct intel_context *intel = &brw->intel; 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org struct gl_context *ctx = &intel->ctx; 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* BRW_NEW_FRAGMENT_PROGRAM */ 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t num_outputs = _mesa_bitcount_64(brw->fragment_program->Base.InputsRead); 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_LIGHT */ 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool shade_model_flat = ctx->Light.ShadeModel == GL_FLAT; 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t dw1, dw2, dw3, dw4, dw16, dw17; 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int i; 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_BUFFER */ 128f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool render_to_fbo = _mesa_is_user_fbo(brw->intel.ctx.DrawBuffer); 129f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1; 130f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 131f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int attr = 0, input_index = 0; 132f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int urb_entry_read_offset = 1; 133f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org float point_size; 134f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint16_t attr_overrides[FRAG_ATTRIB_MAX]; 135f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t point_sprite_origin; 136f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 137f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw1 = GEN6_SF_SWIZZLE_ENABLE | num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT; 138f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 139f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 = GEN6_SF_STATISTICS_ENABLE | 140f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org GEN6_SF_VIEWPORT_TRANSFORM_ENABLE; 141f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 142f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 = 0; 143f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw4 = 0; 144f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw16 = 0; 145f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw17 = 0; 146f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 147f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_POLYGON */ 148f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if ((ctx->Polygon.FrontFace == GL_CCW) ^ render_to_fbo) 149f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_WINDING_CCW; 150f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 151f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Polygon.OffsetFill) 152f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID; 153f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 154f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Polygon.OffsetLine) 155f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME; 156f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 157f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Polygon.OffsetPoint) 158f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT; 159f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 160f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org switch (ctx->Polygon.FrontMode) { 161f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_FILL: 162f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_FRONT_SOLID; 163f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 164f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 165f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_LINE: 166f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_FRONT_WIREFRAME; 167f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 168f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 169f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_POINT: 170f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_FRONT_POINT; 171f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 172f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 173f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org default: 174f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(0); 175f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 176f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 177f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 178f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org switch (ctx->Polygon.BackMode) { 179f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_FILL: 180f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_BACK_SOLID; 181f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 182f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 183f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_LINE: 184f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_BACK_WIREFRAME; 185f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 186f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 187f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_POINT: 188f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw2 |= GEN6_SF_BACK_POINT; 189f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 190f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 191f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org default: 192f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(0); 193f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 194f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 195f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 196f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_SCISSOR */ 197f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Scissor.Enabled) 198f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_SCISSOR_ENABLE; 199f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 200f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_POLYGON */ 201f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Polygon.CullFlag) { 202f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org switch (ctx->Polygon.CullFaceMode) { 203f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_FRONT: 204f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_CULL_FRONT; 205f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 206f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_BACK: 207f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_CULL_BACK; 208f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 209f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org case GL_FRONT_AND_BACK: 210f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_CULL_BOTH; 211f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 212f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org default: 213f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(0); 214f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org break; 215f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 216f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 217f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_CULL_NONE; 218f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 219f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 220f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_LINE */ 221f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org { 222f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7); 223f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* TODO: line width of 0 is not allowed when MSAA enabled */ 224f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (line_width_u3_7 == 0) 225f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org line_width_u3_7 = 1; 226f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT; 227f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 228f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Line.SmoothFlag) { 229f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_LINE_AA_ENABLE; 230f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_LINE_AA_MODE_TRUE; 231f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0; 232f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 233f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_MULTISAMPLE */ 234f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (multisampled_fbo && ctx->Multisample.Enabled) 235f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw3 |= GEN6_SF_MSRAST_ON_PATTERN; 236f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 237f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_PROGRAM | _NEW_POINT */ 238f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!(ctx->VertexProgram.PointSizeEnabled || 239f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Point._Attenuated)) 240f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw4 |= GEN6_SF_USE_STATE_POINT_WIDTH; 241f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 242f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Clamp to ARB_point_parameters user limits */ 243f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize); 244f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 245f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Clamp to the hardware limits and convert to fixed point */ 246f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw4 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3); 247f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 248f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* 249f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Window coordinates in an FBO are inverted, which means point 250f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * sprite origin must be inverted, too. 251f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 252f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) { 253f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT; 254f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 255f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT; 256f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 257f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw1 |= point_sprite_origin; 258f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 259f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_LIGHT */ 260f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) { 261f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw4 |= 262f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (2 << GEN6_SF_TRI_PROVOKE_SHIFT) | 263f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) | 264f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (1 << GEN6_SF_LINE_PROVOKE_SHIFT); 265f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } else { 266f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw4 |= 267f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT); 268f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 269f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 270f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* Create the mapping from the FS inputs we produce to the VS outputs 271f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * they source from. 272f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 273f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t max_source_attr = 0; 274f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (; attr < FRAG_ATTRIB_MAX; attr++) { 275f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org enum glsl_interp_qualifier interp_qualifier = 276f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org brw->fragment_program->InterpQualifier[attr]; 277f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool is_gl_Color = attr == FRAG_ATTRIB_COL0 || attr == FRAG_ATTRIB_COL1; 278f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 279f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr))) 280f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org continue; 281f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 282f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* _NEW_POINT */ 283f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (ctx->Point.PointSprite && 284f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7) && 285f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->Point.CoordReplace[attr - FRAG_ATTRIB_TEX0]) { 286f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw16 |= (1 << input_index); 287f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 288f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 289f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (attr == FRAG_ATTRIB_PNTC) 290f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw16 |= (1 << input_index); 291f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 292f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* flat shading */ 293f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (interp_qualifier == INTERP_QUALIFIER_FLAT || 294f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (shade_model_flat && is_gl_Color && 295f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org interp_qualifier == INTERP_QUALIFIER_NONE)) 296f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw17 |= (1 << input_index); 297f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 298f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* The hardware can only do the overrides on 16 overrides at a 299f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * time, and the other up to 16 have to be lined up so that the 300f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * input index = the output index. We'll need to do some 301f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * tweaking to make sure that's the case. 302f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 303f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org assert(input_index < 16 || attr == input_index); 304f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 305f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* CACHE_NEW_VS_PROG | _NEW_LIGHT | _NEW_PROGRAM */ 306f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org attr_overrides[input_index++] = 307f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org get_attr_override(&brw->vs.prog_data->vue_map, 308f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org urb_entry_read_offset, attr, 309f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ctx->VertexProgram._TwoSideEnabled, 310f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org &max_source_attr); 311f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 312f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 313f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (; input_index < FRAG_ATTRIB_MAX; input_index++) 314f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org attr_overrides[input_index] = 0; 315f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 316f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org /* From the Sandy Bridge PRM, Volume 2, Part 1, documentation for 317f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 3DSTATE_SF DWord 1 bits 15:11, "Vertex URB Entry Read Length": 318f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 319f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * "This field should be set to the minimum length required to read the 320f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * maximum source attribute. The maximum source attribute is indicated 321f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * by the maximum value of the enabled Attribute # Source Attribute if 322f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Attribute Swizzle Enable is set, Number of Output Attributes-1 if 323f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * enable is not set. 324f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * read_length = ceiling((max_source_attr + 1) / 2) 325f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 326f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * [errata] Corruption/Hang possible if length programmed larger than 327f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * recommended" 328f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 329f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org uint32_t urb_entry_read_length = ALIGN(max_source_attr + 1, 2) / 2; 330f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dw1 |= urb_entry_read_length << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT | 331f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org urb_entry_read_offset << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT; 332f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 333f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org BEGIN_BATCH(20); 334f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(_3DSTATE_SF << 16 | (20 - 2)); 335f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw1); 336f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw2); 337f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw3); 338f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw4); 339f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */ 340f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */ 341f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */ 342f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org for (i = 0; i < 8; i++) { 343f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16); 344f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 345f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw16); /* point sprite texcoord bitmask */ 346f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(dw17); /* constant interp bitmask */ 347f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(0); /* wrapshortest enables 0-7 */ 348f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT_BATCH(0); /* wrapshortest enables 8-15 */ 349f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ADVANCE_BATCH(); 350f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 351f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 352f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgconst struct brw_tracked_state gen6_sf_state = { 353f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org .dirty = { 354f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org .mesa = (_NEW_LIGHT | 355f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_PROGRAM | 356f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_POLYGON | 357f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_LINE | 358f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_SCISSOR | 359f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_BUFFERS | 360f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_POINT | 361f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org _NEW_MULTISAMPLE), 362f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org .brw = (BRW_NEW_CONTEXT | 363f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org BRW_NEW_FRAGMENT_PROGRAM), 364f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org .cache = CACHE_NEW_VS_PROG 365f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org }, 366f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org .emit = upload_sf_state, 367f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 368