diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_vs_aos.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vs_aos.c | 79 |
1 files changed, 76 insertions, 3 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_aos.c b/src/gallium/auxiliary/draw/draw_vs_aos.c index 441877d46f..a556477a76 100644 --- a/src/gallium/auxiliary/draw/draw_vs_aos.c +++ b/src/gallium/auxiliary/draw/draw_vs_aos.c @@ -29,8 +29,10 @@ */ -#include "pipe/p_util.h" +#include "util/u_memory.h" +#include "util/u_math.h" #include "pipe/p_shader_tokens.h" +#include "pipe/p_debug.h" #include "tgsi/tgsi_parse.h" #include "tgsi/tgsi_util.h" #include "tgsi/tgsi_exec.h" @@ -43,6 +45,7 @@ #ifdef PIPE_ARCH_X86 #define DISASSEM 0 +#define FAST_MATH 1 static const char *files[] = { @@ -117,21 +120,26 @@ static struct x86_reg get_reg_ptr(struct aos_compilation *cp, switch (file) { case TGSI_FILE_INPUT: + assert(idx < MAX_INPUTS); return x86_make_disp(ptr, Offset(struct aos_machine, input[idx])); case TGSI_FILE_OUTPUT: return x86_make_disp(ptr, Offset(struct aos_machine, output[idx])); case TGSI_FILE_TEMPORARY: + assert(idx < MAX_TEMPS); return x86_make_disp(ptr, Offset(struct aos_machine, temp[idx])); case AOS_FILE_INTERNAL: + assert(idx < MAX_INTERNALS); return x86_make_disp(ptr, Offset(struct aos_machine, internal[idx])); case TGSI_FILE_IMMEDIATE: + assert(idx < MAX_IMMEDIATES); /* just a sanity check */ return x86_make_disp(aos_get_x86(cp, 0, X86_IMMEDIATES), idx * 4 * sizeof(float)); case TGSI_FILE_CONSTANT: + assert(idx < MAX_CONSTANTS); /* just a sanity check */ return x86_make_disp(aos_get_x86(cp, 1, X86_CONSTANTS), idx * 4 * sizeof(float)); default: @@ -1380,14 +1388,28 @@ static boolean emit_MAD( struct aos_compilation *cp, const struct tgsi_full_inst return TRUE; } + + /* A wrapper for powf(). * Makes sure it is cdecl and operates on floats. */ static float PIPE_CDECL _powerf( float x, float y ) { +#if FAST_MATH + return util_fast_pow(x, y); +#else return powf( x, y ); +#endif } +#if FAST_MATH +static float PIPE_CDECL _exp2(float x) +{ + return util_fast_exp2(x); +} +#endif + + /* Really not sufficient -- need to check for conditions that could * generate inf/nan values, which will slow things down hugely. */ @@ -1442,6 +1464,48 @@ static boolean emit_POW( struct aos_compilation *cp, const struct tgsi_full_inst } +#if FAST_MATH +static boolean emit_EXPBASE2( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) +{ + uint i; + + /* For absolute correctness, need to spill/invalidate all XMM regs + * too. + */ + for (i = 0; i < 8; i++) { + if (cp->xmm[i].dirty) + spill(cp, i); + aos_release_xmm_reg(cp, i); + } + + /* Push caller-save (ie scratch) regs. + */ + x86_cdecl_caller_push_regs( cp->func ); + + x86_lea( cp->func, cp->stack_ESP, x86_make_disp(cp->stack_ESP, -4) ); + + x87_fld_src( cp, &op->FullSrcRegisters[0], 0 ); + x87_fstp( cp->func, x86_make_disp( cp->stack_ESP, 0 ) ); + + /* tmp_EAX has been pushed & will be restored below */ + x86_mov_reg_imm( cp->func, cp->tmp_EAX, (unsigned long) _exp2 ); + x86_call( cp->func, cp->tmp_EAX ); + + x86_lea( cp->func, cp->stack_ESP, x86_make_disp(cp->stack_ESP, 4) ); + + x86_cdecl_caller_pop_regs( cp->func ); + + /* Note retval on x87 stack: + */ + cp->func->x87_stack++; + + x87_fstp_dest4( cp, &op->FullDstRegisters[0] ); + + return TRUE; +} +#endif + + static boolean emit_RCP( struct aos_compilation *cp, const struct tgsi_full_instruction *op ) { struct x86_reg arg0 = fetch_src(cp, &op->FullSrcRegisters[0]); @@ -1662,7 +1726,9 @@ emit_instruction( struct aos_compilation *cp, return emit_RND(cp, inst); case TGSI_OPCODE_EXPBASE2: -#if 0 +#if FAST_MATH + return emit_EXPBASE2(cp, inst); +#elif 0 /* this seems to fail for "larger" exponents. * See glean tvertProg1's EX2 test. */ @@ -1827,6 +1893,8 @@ static boolean build_vertex_program( struct draw_vs_varient_aos_sse *varient, struct aos_compilation cp; unsigned fixup, label; + util_init_math(); + tgsi_parse_init( &parse, varient->base.vs->state.tokens ); memset(&cp, 0, sizeof(cp)); @@ -2046,6 +2114,11 @@ static void PIPE_CDECL vaos_run_linear( struct draw_vs_varient *varient, start, count, output_buffer ); + + /* Sanity spot checks to make sure we didn't trash our constants */ + assert(machine->internal[IMM_ONES][0] == 1.0f); + assert(machine->internal[IMM_IDENTITY][0] == 0.0f); + assert(machine->internal[IMM_NEGS][0] == -1.0f); } @@ -2135,4 +2208,4 @@ struct draw_vs_varient *draw_vs_varient_aos_sse( struct draw_vertex_shader *vs, -#endif +#endif /* PIPE_ARCH_X86 */ |