diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-26 09:38:40 -0600 |
---|---|---|
committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-09-26 10:15:35 -0600 |
commit | 164fb1299e1614ce05ae539d832567469eedb402 (patch) | |
tree | 139284449776638aa2d0372eb6c36d7ec7f333a2 /src/gallium/drivers/cell/ppu/cell_gen_fp.c | |
parent | f5127909fb0386c2c11a2c26886eb02808ed514e (diff) |
cell: checkpoint: support for function calls in SPU shaders
Will be used for instructions like SIN/COS/POW/TEX/etc. The PPU needs to
know the address of some functions in the SPU address space. Send that
info to the PPU/main memory rather than patch up shaders on the SPU side.
Not finished/tested yet...
Diffstat (limited to 'src/gallium/drivers/cell/ppu/cell_gen_fp.c')
-rw-r--r-- | src/gallium/drivers/cell/ppu/cell_gen_fp.c | 81 |
1 files changed, 80 insertions, 1 deletions
diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c index 8972b5b1ea..fd12af19ce 100644 --- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c +++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c @@ -37,7 +37,7 @@ * \author Brian Paul */ - +#include <math.h> #include "pipe/p_defines.h" #include "pipe/p_state.h" #include "pipe/p_shader_tokens.h" @@ -64,6 +64,7 @@ */ struct codegen { + struct cell_context *cell; int inputs_reg; /**< 1st function parameter */ int outputs_reg; /**< 2nd function parameter */ int constants_reg; /**< 3rd function parameter */ @@ -1076,6 +1077,76 @@ emit_FRC(struct codegen *gen, const struct tgsi_full_instruction *inst) } +#if 0 +static void +print_functions(struct cell_context *cell) +{ + struct cell_spu_function_info *funcs = &cell->spu_functions; + uint i; + for (i = 0; i < funcs->num; i++) { + printf("SPU func %u: %s at %u\n", + i, funcs->names[i], funcs->addrs[i]); + } +} +#endif + + +/** + * Emit code to call a SPU function. + * Used to implement instructions like SIN/COS/POW/TEX/etc. + */ +static boolean +emit_function_call(struct codegen *gen, + const struct tgsi_full_instruction *inst, + char *funcname, uint num_args) +{ + const struct cell_spu_function_info *funcs = &gen->cell->spu_functions; + char comment[100]; + uint addr; + int ch; + + assert(num_args <= 2); + + /* lookup function address */ + { + uint i; + addr = 0; + for (i = 0; i < funcs->num; i++) { + if (strcmp(funcs->names[i], funcname) == 0) { + addr = funcs->addrs[i]; + } + } + assert(addr && "spu function not found"); + } + + sprintf(comment, "CALL %s:", funcname); + spe_comment(gen->f, -4, comment); + + for (ch = 0; ch < 4; ch++) { + if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) { + int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]); + int s_regs[3]; + uint a; + for (a = 0; a < num_args; a++) { + s_regs[a] = get_src_reg(gen, ch, &inst->FullSrcRegisters[a]); + } + + /* XXX not done */ + (void) s_regs; + (void) d_reg; + + spe_bisl(gen->f, SPE_REG_RA, addr, 0, 0); /* XXX untested! */ + + + store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]); + free_itemps(gen); + } + } + + return true; +} + + /** * Emit max. See emit_SGT for comments. */ @@ -1303,6 +1374,13 @@ emit_instruction(struct codegen *gen, case TGSI_OPCODE_END: return emit_END(gen); + case TGSI_OPCODE_COS: + return emit_function_call(gen, inst, "spu_cos", 1); + case TGSI_OPCODE_SIN: + return emit_function_call(gen, inst, "spu_sin", 1); + case TGSI_OPCODE_POW: + return emit_function_call(gen, inst, "spu_pow", 2); + case TGSI_OPCODE_IF: return emit_IF(gen, inst); case TGSI_OPCODE_ELSE: @@ -1431,6 +1509,7 @@ cell_gen_fragment_program(struct cell_context *cell, struct codegen gen; memset(&gen, 0, sizeof(gen)); + gen.cell = cell; gen.f = f; /* For SPE function calls: reg $3 = first param, $4 = second param, etc. */ |