diff options
Diffstat (limited to 'src/intel/vulkan/genX_cmd_buffer.c')
| -rw-r--r-- | src/intel/vulkan/genX_cmd_buffer.c | 125 |
1 files changed, 123 insertions, 2 deletions
diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c index 8ac5ae108f7..163c0226be1 100644 --- a/src/intel/vulkan/genX_cmd_buffer.c +++ b/src/intel/vulkan/genX_cmd_buffer.c @@ -26,6 +26,7 @@ #include "anv_private.h" #include "vk_format_info.h" +#include "util/vk_util.h" #include "common/gen_l3_config.h" #include "genxml/gen_macros.h" @@ -50,6 +51,17 @@ emit_lri(struct anv_batch *batch, uint32_t reg, uint32_t imm) } } +#if GEN_IS_HASWELL || GEN_GEN >= 8 +static void +emit_lrr(struct anv_batch *batch, uint32_t dst, uint32_t src) +{ + anv_batch_emit(batch, GENX(MI_LOAD_REGISTER_REG), lrr) { + lrr.SourceRegisterAddress = src; + lrr.DestinationRegisterAddress = dst; + } +} +#endif + void genX(cmd_buffer_emit_state_base_address)(struct anv_cmd_buffer *cmd_buffer) { @@ -1494,7 +1506,12 @@ genX(cmd_buffer_flush_state)(struct anv_cmd_buffer *cmd_buffer) .MemoryObjectControlState = GENX(MOCS), #else .BufferAccessType = pipeline->instancing_enable[vb] ? INSTANCEDATA : VERTEXDATA, - .InstanceDataStepRate = 1, + /* Our implementation of VK_KHR_multiview uses instancing to draw + * the different views. If the client asks for instancing, we + * need to use the Instance Data Step Rate to ensure that we + * repeat the client's per-instance data once for each view. + */ + .InstanceDataStepRate = anv_subpass_view_count(pipeline->subpass), .VertexBufferMemoryObjectControlState = GENX(MOCS), #endif @@ -1684,6 +1701,11 @@ void genX(CmdDraw)( if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, 0); + /* Our implementation of VK_KHR_multiview uses instancing to draw the + * different views. We need to multiply instanceCount by the view count. + */ + instanceCount *= anv_subpass_view_count(cmd_buffer->state.subpass); + anv_batch_emit(&cmd_buffer->batch, GENX(3DPRIMITIVE), prim) { prim.VertexAccessType = SEQUENTIAL; prim.PrimitiveTopologyType = pipeline->topology; @@ -1717,6 +1739,11 @@ void genX(CmdDrawIndexed)( if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, 0); + /* Our implementation of VK_KHR_multiview uses instancing to draw the + * different views. We need to multiply instanceCount by the view count. + */ + instanceCount *= anv_subpass_view_count(cmd_buffer->state.subpass); + anv_batch_emit(&cmd_buffer->batch, GENX(3DPRIMITIVE), prim) { prim.VertexAccessType = RANDOM; prim.PrimitiveTopologyType = pipeline->topology; @@ -1736,6 +1763,75 @@ void genX(CmdDrawIndexed)( #define GEN7_3DPRIM_START_INSTANCE 0x243C #define GEN7_3DPRIM_BASE_VERTEX 0x2440 +/* MI_MATH only exists on Haswell+ */ +#if GEN_IS_HASWELL || GEN_GEN >= 8 + +static uint32_t +mi_alu(uint32_t opcode, uint32_t op1, uint32_t op2) +{ + struct GENX(MI_MATH_ALU_INSTRUCTION) instr = { + .ALUOpcode = opcode, + .Operand1 = op1, + .Operand2 = op2, + }; + + uint32_t dw; + GENX(MI_MATH_ALU_INSTRUCTION_pack)(NULL, &dw, &instr); + + return dw; +} + +#define CS_GPR(n) (0x2600 + (n) * 8) + +/* Emit dwords to multiply GPR0 by N */ +static void +build_alu_multiply_gpr0(uint32_t *dw, unsigned *dw_count, uint32_t N) +{ + VK_OUTARRAY_MAKE(out, dw, dw_count); + +#define append_alu(opcode, operand1, operand2) \ + vk_outarray_append(&out, alu_dw) *alu_dw = mi_alu(opcode, operand1, operand2) + + assert(N > 0); + unsigned top_bit = 31 - __builtin_clz(N); + for (int i = top_bit - 1; i >= 0; i--) { + /* We get our initial data in GPR0 and we write the final data out to + * GPR0 but we use GPR1 as our scratch register. + */ + unsigned src_reg = i == top_bit - 1 ? MI_ALU_REG0 : MI_ALU_REG1; + unsigned dst_reg = i == 0 ? MI_ALU_REG0 : MI_ALU_REG1; + + /* Shift the current value left by 1 */ + append_alu(MI_ALU_LOAD, MI_ALU_SRCA, src_reg); + append_alu(MI_ALU_LOAD, MI_ALU_SRCB, src_reg); + append_alu(MI_ALU_ADD, 0, 0); + + if (N & (1 << i)) { + /* Store ACCU to R1 and add R0 to R1 */ + append_alu(MI_ALU_STORE, MI_ALU_REG1, MI_ALU_ACCU); + append_alu(MI_ALU_LOAD, MI_ALU_SRCA, MI_ALU_REG0); + append_alu(MI_ALU_LOAD, MI_ALU_SRCB, MI_ALU_REG1); + append_alu(MI_ALU_ADD, 0, 0); + } + + append_alu(MI_ALU_STORE, dst_reg, MI_ALU_ACCU); + } + +#undef append_alu +} + +static void +emit_mul_gpr0(struct anv_batch *batch, uint32_t N) +{ + uint32_t num_dwords; + build_alu_multiply_gpr0(NULL, &num_dwords, N); + + uint32_t *dw = anv_batch_emitn(batch, 1 + num_dwords, GENX(MI_MATH)); + build_alu_multiply_gpr0(dw + 1, &num_dwords, N); +} + +#endif /* GEN_IS_HASWELL || GEN_GEN >= 8 */ + static void load_indirect_parameters(struct anv_cmd_buffer *cmd_buffer, struct anv_buffer *buffer, uint64_t offset, @@ -1746,7 +1842,22 @@ load_indirect_parameters(struct anv_cmd_buffer *cmd_buffer, uint32_t bo_offset = buffer->offset + offset; emit_lrm(batch, GEN7_3DPRIM_VERTEX_COUNT, bo, bo_offset); - emit_lrm(batch, GEN7_3DPRIM_INSTANCE_COUNT, bo, bo_offset + 4); + + unsigned view_count = anv_subpass_view_count(cmd_buffer->state.subpass); + if (view_count > 1) { +#if GEN_IS_HASWELL || GEN_GEN >= 8 + emit_lrm(batch, CS_GPR(0), bo, bo_offset + 4); + emit_mul_gpr0(batch, view_count); + emit_lrr(batch, GEN7_3DPRIM_INSTANCE_COUNT, CS_GPR(0)); +#else + anv_finishme("Multiview + indirect draw requires MI_MATH\n" + "MI_MATH is not supported on Ivy Bridge"); + emit_lrm(batch, GEN7_3DPRIM_INSTANCE_COUNT, bo, bo_offset + 4); +#endif + } else { + emit_lrm(batch, GEN7_3DPRIM_INSTANCE_COUNT, bo, bo_offset + 4); + } + emit_lrm(batch, GEN7_3DPRIM_START_VERTEX, bo, bo_offset + 8); if (indexed) { @@ -2350,6 +2461,16 @@ genX(cmd_buffer_set_subpass)(struct anv_cmd_buffer *cmd_buffer, cmd_buffer->state.dirty |= ANV_CMD_DIRTY_RENDER_TARGETS; + /* Our implementation of VK_KHR_multiview uses instancing to draw the + * different views. If the client asks for instancing, we need to use the + * Instance Data Step Rate to ensure that we repeat the client's + * per-instance data once for each view. Since this bit is in + * VERTEX_BUFFER_STATE on gen7, we need to dirty vertex buffers at the top + * of each subpass. + */ + if (GEN_GEN == 7) + cmd_buffer->state.vb_dirty |= ~0; + /* Perform transitions to the subpass layout before any writes have * occurred. */ |