From c298bab60ea63882f34825a35cbc60f662783e64 Mon Sep 17 00:00:00 2001 From: Tom Stellard Date: Thu, 5 Aug 2010 10:19:00 -0700 Subject: r300/compiler: Implement hardware assisted loops for vertex shaders. Single loops work, but nested loops do not. --- src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c | 2 +- src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c | 115 ++++++++++++++++++--- .../drivers/dri/r300/compiler/r3xx_vertprog_dump.c | 21 +++- src/mesa/drivers/dri/r300/compiler/radeon_code.h | 19 +++- .../drivers/dri/r300/compiler/radeon_compiler.h | 1 + .../dri/r300/compiler/radeon_emulate_loops.c | 8 +- .../dri/r300/compiler/radeon_emulate_loops.h | 3 +- src/mesa/drivers/dri/r300/r300_reg.h | 21 ++++ 8 files changed, 170 insertions(+), 20 deletions(-) (limited to 'src/mesa/drivers/dri') diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c index c6246a81a2..d2fa816894 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c @@ -113,7 +113,7 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c) debug_program_log(c, "after unroll loops"); } else{ - rc_transform_loops(&c->Base, &loop_state); + rc_transform_loops(&c->Base, &loop_state, -1); debug_program_log(c, "after transform loops"); rc_emulate_branches(&c->Base); diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c index e940fedec2..7c2ba2fc09 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c @@ -32,6 +32,11 @@ #include "radeon_emulate_branches.h" #include "radeon_emulate_loops.h" +struct loop { + int BgnLoop; + +}; + /* * Take an already-setup and valid source then swizzle it appropriately to * obtain a constant ZERO or ONE source. @@ -337,6 +342,10 @@ static void translate_vertex_program(struct r300_vertex_program_compiler * compi { struct rc_instruction *rci; + struct loop * loops; + int current_loop_depth = 0; + int loops_reserved = 0; + compiler->code->pos_end = 0; /* Not supported yet */ compiler->code->length = 0; @@ -385,6 +394,68 @@ static void translate_vertex_program(struct r300_vertex_program_compiler * compi case RC_OPCODE_SIN: ei_math1(compiler->code, ME_SIN, vpi, inst); break; case RC_OPCODE_SLT: ei_vector2(compiler->code, VE_SET_LESS_THAN, vpi, inst); break; case RC_OPCODE_SNE: ei_vector2(compiler->code, VE_SET_NOT_EQUAL, vpi, inst); break; + case RC_OPCODE_BGNLOOP: + { + struct loop * l; + + if ((!compiler->Base.is_r500 + && loops_reserved >= R300_VS_MAX_LOOP_DEPTH) + || loops_reserved >= R500_VS_MAX_FC_DEPTH) { + rc_error(&compiler->Base, + "Loops are nested too deep."); + return; + } + memory_pool_array_reserve(&compiler->Base.Pool, + struct loop, loops, current_loop_depth, + loops_reserved, 1); + l = &loops[current_loop_depth++]; + memset(l , 0, sizeof(struct loop)); + l->BgnLoop = (compiler->code->length / 4); + continue; + } + case RC_OPCODE_ENDLOOP: + { + struct loop * l = &loops[current_loop_depth - 1]; + unsigned int act_addr = l->BgnLoop - 1; + unsigned int last_addr = (compiler->code->length / 4) - 1; + unsigned int ret_addr = l->BgnLoop; + + if (loops_reserved >= R300_VS_MAX_FC_OPS) { + rc_error(&compiler->Base, + "Too many flow control instructions."); + return; + } + if (compiler->Base.is_r500) { + compiler->code->fc_op_addrs.r500 + [compiler->code->num_fc_ops].lw = + R500_PVS_FC_ACT_ADRS(act_addr) + | R500_PVS_FC_LOOP_CNT_JMP_INST(0xffff) + ; + compiler->code->fc_op_addrs.r500 + [compiler->code->num_fc_ops].uw = + R500_PVS_FC_LAST_INST(last_addr) + | R500_PVS_FC_RTN_INST(ret_addr) + ; + } else { + compiler->code->fc_op_addrs.r300 + [compiler->code->num_fc_ops] = + R300_PVS_FC_ACT_ADRS(act_addr) + | R300_PVS_FC_LOOP_CNT_JMP_INST(0xff) + | R300_PVS_FC_LAST_INST(last_addr) + | R300_PVS_FC_RTN_INST(ret_addr) + ; + } + compiler->code->fc_loop_index[compiler->code->num_fc_ops] = + R300_PVS_FC_LOOP_INIT_VAL(0x0) + | R300_PVS_FC_LOOP_STEP_VAL(0x1) + ; + compiler->code->fc_ops |= R300_VAP_PVS_FC_OPC_LOOP( + compiler->code->num_fc_ops); + compiler->code->num_fc_ops++; + current_loop_depth--; + continue; + } + default: rc_error(&compiler->Base, "Unknown opcode %s\n", rc_get_opcode_info(vpi->Opcode)->Name); return; @@ -406,6 +477,7 @@ struct temporary_allocation { static void allocate_temporary_registers(struct r300_vertex_program_compiler * compiler) { struct rc_instruction *inst; + struct rc_instruction *end_loop = NULL; unsigned int num_orig_temps = 0; char hwtemps[R300_VS_MAX_TEMPS]; struct temporary_allocation * ta; @@ -440,10 +512,35 @@ static void allocate_temporary_registers(struct r300_vertex_program_compiler * c /* Pass 2: Determine original temporary lifetimes */ for(inst = compiler->Base.Program.Instructions.Next; inst != &compiler->Base.Program.Instructions; inst = inst->Next) { const struct rc_opcode_info * opcode = rc_get_opcode_info(inst->U.I.Opcode); + /* Instructions inside of loops need to use the ENDLOOP + * instruction as their LastRead. */ + if (!end_loop && inst->U.I.Opcode == RC_OPCODE_BGNLOOP) { + int endloops = 1; + struct rc_instruction * ptr; + for(ptr = inst->Next; + ptr != &compiler->Base.Program.Instructions; + ptr = ptr->Next){ + if (ptr->U.I.Opcode == RC_OPCODE_BGNLOOP) { + endloops++; + } else if (ptr->U.I.Opcode == RC_OPCODE_ENDLOOP) { + endloops--; + if (endloops <= 0) { + end_loop = ptr; + break; + } + } + } + } + + if (inst == end_loop) { + end_loop = NULL; + continue; + } for (i = 0; i < opcode->NumSrcRegs; ++i) { if (inst->U.I.SrcReg[i].File == RC_FILE_TEMPORARY) - ta[inst->U.I.SrcReg[i].Index].LastRead = inst; + ta[inst->U.I.SrcReg[i].Index].LastRead = + end_loop ? end_loop : inst; } } @@ -640,17 +737,11 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* compiler) debug_program_log(compiler, "before compilation"); - /* XXX Ideally this should be done only for r3xx, but since - * we don't have branching support for r5xx, we use the emulation - * on all chipsets. */ + if (compiler->Base.is_r500) + rc_transform_loops(&compiler->Base, &loop_state, R500_VS_MAX_ALU); + else + rc_transform_loops(&compiler->Base, &loop_state, R300_VS_MAX_ALU); - if (compiler->Base.is_r500){ - rc_transform_loops(&compiler->Base, &loop_state); - rc_emulate_loops(&loop_state, R500_VS_MAX_ALU); - } else { - rc_transform_loops(&compiler->Base, &loop_state); - rc_emulate_loops(&loop_state, R300_VS_MAX_ALU); - } debug_program_log(compiler, "after emulate loops"); rc_emulate_branches(&compiler->Base); @@ -717,6 +808,6 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* compiler) if (compiler->Base.Debug) { fprintf(stderr, "Final vertex program code:\n"); - r300_vertex_program_dump(compiler->code); + r300_vertex_program_dump(compiler); } } diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog_dump.c b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog_dump.c index 5800f1a78e..66e352d05d 100644 --- a/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog_dump.c +++ b/src/mesa/drivers/dri/r300/compiler/r3xx_vertprog_dump.c @@ -20,6 +20,7 @@ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. */ +#include "radeon_compiler.h" #include "radeon_code.h" #include @@ -160,8 +161,9 @@ static void r300_vs_src_dump(uint32_t src) r300_vs_swiz_debug[(src >> 22) & 0x7]); } -void r300_vertex_program_dump(struct r300_vertex_program_code * vs) +void r300_vertex_program_dump(struct r300_vertex_program_compiler * c) { + struct r300_vertex_program_code * vs = c->code; unsigned instrcount = vs->length / 4; unsigned i; @@ -177,4 +179,21 @@ void r300_vertex_program_dump(struct r300_vertex_program_code * vs) r300_vs_src_dump(vs->body.d[offset+1+src]); } } + + fprintf(stderr, "Flow Control Ops: 0x%08x\n",vs->fc_ops); + for(i = 0; i < vs->num_fc_ops; i++) { + switch((vs->fc_ops >> (i * 2)) & 0x3 ) { + case 0: fprintf(stderr, "NOP"); break; + case 1: fprintf(stderr, "JUMP"); break; + case 2: fprintf(stderr, "LOOP"); break; + case 3: fprintf(stderr, "JSR"); break; + } + if (c->Base.is_r500) { + fprintf(stderr,": uw-> 0x%08x lw-> 0x%08x\n", + vs->fc_op_addrs.r500[i].uw, + vs->fc_op_addrs.r500[i].lw); + } else { + fprintf(stderr,": 0x%08x\n", vs->fc_op_addrs.r300[i]); + } + } } diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_code.h b/src/mesa/drivers/dri/r300/compiler/radeon_code.h index e14a3520dd..896246d203 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_code.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_code.h @@ -243,6 +243,12 @@ struct rX00_fragment_program_code { #define R500_VS_MAX_ALU 1024 #define R500_VS_MAX_ALU_DWORDS (R500_VS_MAX_ALU * 4) #define R300_VS_MAX_TEMPS 32 +/* This is the max for all chipsets (r300-r500) */ +#define R300_VS_MAX_FC_OPS 16 +/* The r500 maximum depth is not just for loops, but any combination of loops + * and subroutine jumps. */ +#define R500_VS_MAX_FC_DEPTH 8 +#define R300_VS_MAX_LOOP_DEPTH 1 #define VSF_MAX_INPUTS 32 #define VSF_MAX_OUTPUTS 32 @@ -263,9 +269,18 @@ struct r300_vertex_program_code { uint32_t InputsRead; uint32_t OutputsWritten; -}; -void r300_vertex_program_dump(struct r300_vertex_program_code * vs); + unsigned int num_fc_ops; + uint32_t fc_ops; + union { + uint32_t r300[R300_VS_MAX_FC_OPS]; + struct { + uint32_t lw; + uint32_t uw; + } r500[R300_VS_MAX_FC_OPS]; + } fc_op_addrs; + int32_t fc_loop_index[R300_VS_MAX_FC_OPS]; +}; #endif /* RADEON_CODE_H */ diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h index f15905d79d..bbd57cca63 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h @@ -113,5 +113,6 @@ struct r300_vertex_program_compiler { }; void r3xx_compile_vertex_program(struct r300_vertex_program_compiler* c); +void r300_vertex_program_dump(struct r300_vertex_program_compiler * c); #endif /* RADEON_COMPILER_H */ diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c index 2a3306f906..32d4b45dd6 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c @@ -423,7 +423,8 @@ static int build_loop_info(struct radeon_compiler * c, struct loop_info * loop, * @param inst A pointer to a BGNLOOP instruction. * @return 1 for success, 0 for failure */ -int transform_loop(struct emulate_loop_state * s, struct rc_instruction * inst) +static int transform_loop(struct emulate_loop_state * s, + struct rc_instruction * inst) { struct loop_info * loop; @@ -435,7 +436,7 @@ int transform_loop(struct emulate_loop_state * s, struct rc_instruction * inst) if (!build_loop_info(s->C, loop, inst)) return 0; - if(try_unroll_loop(s->C, loop, -1)){ + if(try_unroll_loop(s->C, loop, s->prog_inst_limit)){ return 1; } @@ -472,12 +473,13 @@ int transform_loop(struct emulate_loop_state * s, struct rc_instruction * inst) } void rc_transform_loops(struct radeon_compiler *c, - struct emulate_loop_state * s) + struct emulate_loop_state * s, int prog_inst_limit) { struct rc_instruction * ptr; memset(s, 0, sizeof(struct emulate_loop_state)); s->C = c; + s->prog_inst_limit = prog_inst_limit; for(ptr = s->C->Program.Instructions.Next; ptr != &s->C->Program.Instructions; ptr = ptr->Next) { if(ptr->Type == RC_INSTRUCTION_NORMAL && diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.h b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.h index 86d91ef14b..bba1f68e30 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.h +++ b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.h @@ -21,10 +21,11 @@ struct emulate_loop_state { struct loop_info * Loops; unsigned int LoopCount; unsigned int LoopReserved; + int prog_inst_limit; }; void rc_transform_loops(struct radeon_compiler *c, - struct emulate_loop_state * s); + struct emulate_loop_state * s, int prog_inst_limit); void rc_unroll_loops(struct radeon_compiler * c, int prog_inst_limit); diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h index f25264b6f2..f7705b0f6f 100644 --- a/src/mesa/drivers/dri/r300/r300_reg.h +++ b/src/mesa/drivers/dri/r300/r300_reg.h @@ -441,6 +441,12 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. #define R300_VAP_GB_HORZ_CLIP_ADJ 0x2228 #define R300_VAP_GB_HORZ_DISC_ADJ 0x222c +#define R300_VAP_PVS_FLOW_CNTL_ADDRS_0 0x2230 +#define R300_PVS_FC_ACT_ADRS(x) ((x) << 0) +#define R300_PVS_FC_LOOP_CNT_JMP_INST(x) ((x) << 8) +#define R300_PVS_FC_LAST_INST(x) ((x) << 16) +#define R300_PVS_FC_RTN_INST(x) ((x) << 24) + /* gap */ /* Sometimes, END_OF_PKT and 0x2284=0 are the only commands sent between @@ -459,6 +465,10 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. # define R300_2288_R300 0x00750000 /* -- nh */ # define R300_2288_RV350 0x0000FFFF /* -- Vladimir */ +#define R300_VAP_PVS_FLOW_CNTL_LOOP_INDEX_0 0x2290 +#define R300_PVS_FC_LOOP_INIT_VAL(x) ((x) << 0) +#define R300_PVS_FC_LOOP_STEP_VAL(x) ((x) << 8) + /* gap */ /* Addresses are relative to the vertex program instruction area of the @@ -489,6 +499,9 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. #define R300_VAP_PVS_CODE_CNTL_1 0x22D8 # define R300_PVS_LAST_VTX_SRC_INST_SHIFT 0 #define R300_VAP_PVS_FLOW_CNTL_OPC 0x22DC +#define R300_VAP_PVS_FC_OPC_JUMP(x) (1 << (2 * (x))) +#define R300_VAP_PVS_FC_OPC_LOOP(x) (2 << (2 * (x))) +#define R300_VAP_PVS_FC_OPC_JSR(x) (3 << (2 * (x))) /* The entire range from 0x2300 to 0x2AC inclusive seems to be used for * immediate vertices @@ -505,6 +518,14 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. /* write 0 to indicate end of packet? */ #define R300_VAP_VTX_END_OF_PKT 0x24AC +#define R500_VAP_PVS_FLOW_CNTL_ADDRS_LW_0 0x2500 +#define R500_PVS_FC_ACT_ADRS(x) ((x) << 0) +#define R500_PVS_FC_LOOP_CNT_JMP_INST(x) ((x) << 16) + +#define R500_VAP_PVS_FLOW_CNTL_ADDRS_UW_0 0x2504 +#define R500_PVS_FC_LAST_INST(x) ((x) << 0) +#define R500_PVS_FC_RTN_INST(x) ((x) << 16) + /* gap */ /* These are values from r300_reg/r300_reg.h - they are known to be correct -- cgit v1.2.3