/* * Copyright © 2012 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include "main/glheader.h" #include "main/bufferobj.h" #include "main/context.h" #include "main/enums.h" #include "main/macros.h" #include "brw_draw.h" #include "brw_defines.h" #include "brw_context.h" #include "brw_state.h" #include "intel_batchbuffer.h" #include "intel_buffer_objects.h" static void gen8_emit_vertices(struct brw_context *brw) { struct gl_context *ctx = &brw->ctx; uint32_t mocs_wb = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB; bool uses_edge_flag; brw_prepare_vertices(brw); brw_prepare_shader_draw_parameters(brw); uses_edge_flag = (ctx->Polygon.FrontMode != GL_FILL || ctx->Polygon.BackMode != GL_FILL); if (brw->vs.prog_data->uses_vertexid || brw->vs.prog_data->uses_instanceid) { unsigned vue = brw->vb.nr_enabled; /* The element for the edge flags must always be last, so we have to * insert the SGVS before it in that case. */ if (uses_edge_flag) { assert(vue > 0); vue--; } WARN_ONCE(vue >= 33, "Trying to insert VID/IID past 33rd vertex element, " "need to reorder the vertex attrbutes."); unsigned dw1 = 0; if (brw->vs.prog_data->uses_vertexid) { dw1 |= GEN8_SGVS_ENABLE_VERTEX_ID | (2 << GEN8_SGVS_VERTEX_ID_COMPONENT_SHIFT) | /* .z channel */ (vue << GEN8_SGVS_VERTEX_ID_ELEMENT_OFFSET_SHIFT); } if (brw->vs.prog_data->uses_instanceid) { dw1 |= GEN8_SGVS_ENABLE_INSTANCE_ID | (3 << GEN8_SGVS_INSTANCE_ID_COMPONENT_SHIFT) | /* .w channel */ (vue << GEN8_SGVS_INSTANCE_ID_ELEMENT_OFFSET_SHIFT); } BEGIN_BATCH(2); OUT_BATCH(_3DSTATE_VF_SGVS << 16 | (2 - 2)); OUT_BATCH(dw1); ADVANCE_BATCH(); BEGIN_BATCH(3); OUT_BATCH(_3DSTATE_VF_INSTANCING << 16 | (3 - 2)); OUT_BATCH(vue | GEN8_VF_INSTANCING_ENABLE); OUT_BATCH(0); ADVANCE_BATCH(); } else { BEGIN_BATCH(2); OUT_BATCH(_3DSTATE_VF_SGVS << 16 | (2 - 2)); OUT_BATCH(0); ADVANCE_BATCH(); } /* If the VS doesn't read any inputs (calculating vertex position from * a state variable for some reason, for example), emit a single pad * VERTEX_ELEMENT struct and bail. * * The stale VB state stays in place, but they don't do anything unless * a VE loads from them. */ if (brw->vb.nr_enabled == 0) { BEGIN_BATCH(3); OUT_BATCH((_3DSTATE_VERTEX_ELEMENTS << 16) | (3 - 2)); OUT_BATCH((0 << GEN6_VE0_INDEX_SHIFT) | GEN6_VE0_VALID | (BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT) | (0 << BRW_VE0_SRC_OFFSET_SHIFT)); OUT_BATCH((BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_0_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT) | (BRW_VE1_COMPONENT_STORE_1_FLT << BRW_VE1_COMPONENT_3_SHIFT)); ADVANCE_BATCH(); return; } /* Now emit 3DSTATE_VERTEX_BUFFERS and 3DSTATE_VERTEX_ELEMENTS packets. */ unsigned nr_buffers = brw->vb.nr_buffers + brw->vs.prog_data->uses_vertexid; if (nr_buffers) { assert(nr_buffers <= 33); BEGIN_BATCH(1 + 4 * nr_buffers); OUT_BATCH((_3DSTATE_VERTEX_BUFFERS << 16) | (4 * nr_buffers - 1)); for (unsigned i = 0; i < brw->vb.nr_buffers; i++) { struct brw_vertex_buffer *buffer = &brw->vb.buffers[i]; uint32_t dw0 = 0; dw0 |= i << GEN6_VB0_INDEX_SHIFT; dw0 |= GEN7_VB0_ADDRESS_MODIFYENABLE; dw0 |= buffer->stride << BRW_VB0_PITCH_SHIFT; dw0 |= mocs_wb << 16; OUT_BATCH(dw0); OUT_RELOC64(buffer->bo, I915_GEM_DOMAIN_VERTEX, 0, buffer->offset); OUT_BATCH(buffer->bo->size); } if (brw->vs.prog_data->uses_vertexid) { OUT_BATCH(brw->vb.nr_buffers << GEN6_VB0_INDEX_SHIFT | GEN7_VB0_ADDRESS_MODIFYENABLE | mocs_wb << 16); OUT_RELOC64(brw->draw.draw_params_bo, I915_GEM_DOMAIN_VERTEX, 0, brw->draw.draw_params_offset); OUT_BATCH(brw->draw.draw_params_bo->size); } ADVANCE_BATCH(); } /* Normally we don't need an element for the SGVS attribute because the * 3DSTATE_VF_SGVS instruction lets you store the generated attribute in an * element that is past the list in 3DSTATE_VERTEX_ELEMENTS. However if the * vertex ID is used then it needs an element for the base vertex buffer. * Additionally if there is an edge flag element then the SGVS can't be * inserted past that so we need a dummy element to ensure that the edge * flag is the last one. */ bool needs_sgvs_element = (brw->vs.prog_data->uses_vertexid || (brw->vs.prog_data->uses_instanceid && uses_edge_flag)); unsigned nr_elements = brw->vb.nr_enabled + needs_sgvs_element; /* The hardware allows one more VERTEX_ELEMENTS than VERTEX_BUFFERS, * presumably for VertexID/InstanceID. */ assert(nr_elements <= 34); struct brw_vertex_element *gen6_edgeflag_input = NULL; BEGIN_BATCH(1 + nr_elements * 2); OUT_BATCH((_3DSTATE_VERTEX_ELEMENTS << 16) | (2 * nr_elements - 1)); for (unsigned i = 0; i < brw->vb.nr_enabled; i++) { struct brw_vertex_element *input = brw->vb.enabled[i]; uint32_t format = brw_get_vertex_surface_type(brw, input->glarray); uint32_t comp0 = BRW_VE1_COMPONENT_STORE_SRC; uint32_t comp1 = BRW_VE1_COMPONENT_STORE_SRC; uint32_t comp2 = BRW_VE1_COMPONENT_STORE_SRC; uint32_t comp3 = BRW_VE1_COMPONENT_STORE_SRC; /* The gen4 driver expects edgeflag to come in as a float, and passes * that float on to the tests in the clipper. Mesa's current vertex * attribute value for EdgeFlag is stored as a float, which works out. * glEdgeFlagPointer, on the other hand, gives us an unnormalized * integer ubyte. Just rewrite that to convert to a float. */ if (input == &brw->vb.inputs[VERT_ATTRIB_EDGEFLAG]) { /* Gen6+ passes edgeflag as sideband along with the vertex, instead * of in the VUE. We have to upload it sideband as the last vertex * element according to the B-Spec. */ gen6_edgeflag_input = input; continue; } switch (input->glarray->Size) { case 0: comp0 = BRW_VE1_COMPONENT_STORE_0; case 1: comp1 = BRW_VE1_COMPONENT_STORE_0; case 2: comp2 = BRW_VE1_COMPONENT_STORE_0; case 3: comp3 = input->glarray->Integer ? BRW_VE1_COMPONENT_STORE_1_INT : BRW_VE1_COMPONENT_STORE_1_FLT; break; } OUT_BATCH((input->buffer << GEN6_VE0_INDEX_SHIFT) | GEN6_VE0_VALID | (format << BRW_VE0_FORMAT_SHIFT) | (input->offset << BRW_VE0_SRC_OFFSET_SHIFT)); OUT_BATCH((comp0 << BRW_VE1_COMPONENT_0_SHIFT) | (comp1 << BRW_VE1_COMPONENT_1_SHIFT) | (comp2 << BRW_VE1_COMPONENT_2_SHIFT) | (comp3 << BRW_VE1_COMPONENT_3_SHIFT)); } if (needs_sgvs_element) { if (brw->vs.prog_data->uses_vertexid) { OUT_BATCH(GEN6_VE0_VALID | brw->vb.nr_buffers << GEN6_VE0_INDEX_SHIFT | BRW_SURFACEFORMAT_R32_UINT << BRW_VE0_FORMAT_SHIFT); OUT_BATCH((BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_3_SHIFT)); } else { OUT_BATCH(GEN6_VE0_VALID); OUT_BATCH((BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_0_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_3_SHIFT)); } } if (gen6_edgeflag_input) { uint32_t format = brw_get_vertex_surface_type(brw, gen6_edgeflag_input->glarray); OUT_BATCH((gen6_edgeflag_input->buffer << GEN6_VE0_INDEX_SHIFT) | GEN6_VE0_VALID | GEN6_VE0_EDGE_FLAG_ENABLE | (format << BRW_VE0_FORMAT_SHIFT) | (gen6_edgeflag_input->offset << BRW_VE0_SRC_OFFSET_SHIFT)); OUT_BATCH((BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT) | (BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_3_SHIFT)); } ADVANCE_BATCH(); for (unsigned i = 0; i < brw->vb.nr_enabled; i++) { const struct brw_vertex_element *input = brw->vb.enabled[i]; const struct brw_vertex_buffer *buffer = &brw->vb.buffers[input->buffer]; BEGIN_BATCH(3); OUT_BATCH(_3DSTATE_VF_INSTANCING << 16 | (3 - 2)); OUT_BATCH(i | (buffer->step_rate ? GEN8_VF_INSTANCING_ENABLE : 0)); OUT_BATCH(buffer->step_rate); ADVANCE_BATCH(); } } const struct brw_tracked_state gen8_vertices = { .dirty = { .mesa = _NEW_POLYGON, .brw = BRW_NEW_BATCH | BRW_NEW_VERTICES | BRW_NEW_VS_PROG_DATA, }, .emit = gen8_emit_vertices, }; static void gen8_emit_index_buffer(struct brw_context *brw) { const struct _mesa_index_buffer *index_buffer = brw->ib.ib; uint32_t mocs_wb = brw->gen >= 9 ? SKL_MOCS_WB : BDW_MOCS_WB; if (index_buffer == NULL) return; BEGIN_BATCH(5); OUT_BATCH(CMD_INDEX_BUFFER << 16 | (5 - 2)); OUT_BATCH(brw_get_index_type(index_buffer->type) | mocs_wb); OUT_RELOC64(brw->ib.bo, I915_GEM_DOMAIN_VERTEX, 0, 0); OUT_BATCH(brw->ib.bo->size); ADVANCE_BATCH(); } const struct brw_tracked_state gen8_index_buffer = { .dirty = { .mesa = 0, .brw = BRW_NEW_BATCH | BRW_NEW_INDEX_BUFFER, }, .emit = gen8_emit_index_buffer, }; static void gen8_emit_vf_topology(struct brw_context *brw) { BEGIN_BATCH(2); OUT_BATCH(_3DSTATE_VF_TOPOLOGY << 16 | (2 - 2)); OUT_BATCH(brw->primitive); ADVANCE_BATCH(); } const struct brw_tracked_state gen8_vf_topology = { .dirty = { .mesa = 0, .brw = BRW_NEW_PRIMITIVE, }, .emit = gen8_emit_vf_topology, };