diff options
Diffstat (limited to 'src/mesa/pipe/tgsi/exec/tgsi_sse2.c')
| -rwxr-xr-x | src/mesa/pipe/tgsi/exec/tgsi_sse2.c | 248 |
1 files changed, 245 insertions, 3 deletions
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_sse2.c b/src/mesa/pipe/tgsi/exec/tgsi_sse2.c index d89bb19970..cf5e386ddf 100755 --- a/src/mesa/pipe/tgsi/exec/tgsi_sse2.c +++ b/src/mesa/pipe/tgsi/exec/tgsi_sse2.c @@ -115,6 +115,23 @@ get_temp( } static struct x86_reg +get_coef_base( void ) +{ + return get_output_base(); +} + +static struct x86_reg +get_coef( + unsigned vec, + unsigned chan, + unsigned member ) +{ + return x86_make_disp( + get_coef_base(), + ((vec * 3 + member) * 4 + chan) * 4 ); +} + +static struct x86_reg get_addr( unsigned vec, unsigned chan ) @@ -143,7 +160,7 @@ emit_const( } static void -emit_input( +emit_inputf( struct x86_function *func, unsigned xmm, unsigned vec, @@ -156,6 +173,19 @@ emit_input( } static void +emit_inputs( + struct x86_function *func, + unsigned xmm, + unsigned vec, + unsigned chan ) +{ + sse_movups( + func, + get_input( vec, chan ), + make_xmm( xmm ) ); +} + +static void emit_output( struct x86_function *func, unsigned xmm, @@ -182,7 +212,7 @@ emit_tempf( } static void -emit_temps ( +emit_temps( struct x86_function *func, unsigned xmm, unsigned vec, @@ -195,6 +225,70 @@ emit_temps ( } static void +emit_coef( + struct x86_function *func, + unsigned xmm, + unsigned vec, + unsigned chan, + unsigned member ) +{ + sse_movss( + func, + make_xmm( xmm ), + get_coef( vec, chan, member ) ); + sse_shufps( + func, + make_xmm( xmm ), + make_xmm( xmm ), + SHUF( 0, 0, 0, 0 ) ); +} + +static void +emit_coef_a0( + struct x86_function *func, + unsigned xmm, + unsigned vec, + unsigned chan ) +{ + emit_coef( + func, + xmm, + vec, + chan, + 0 ); +} + +static void +emit_coef_dadx( + struct x86_function *func, + unsigned xmm, + unsigned vec, + unsigned chan ) +{ + emit_coef( + func, + xmm, + vec, + chan, + 1 ); +} + +static void +emit_coef_dady( + struct x86_function *func, + unsigned xmm, + unsigned vec, + unsigned chan ) +{ + emit_coef( + func, + xmm, + vec, + chan, + 2 ); +} + +static void emit_addrf( struct x86_function *func, unsigned xmm, @@ -676,7 +770,7 @@ emit_fetch( break; case TGSI_FILE_INPUT: - emit_input( + emit_inputf( func, xmm, reg->SrcRegister.Index, @@ -1658,6 +1752,76 @@ emit_instruction( } } +static void +emit_declaration( + struct x86_function *func, + struct tgsi_full_declaration *decl ) +{ + if( decl->Declaration.File == TGSI_FILE_INPUT ) { + unsigned first, last, mask; + unsigned i, j; + + assert( decl->Declaration.Declare == TGSI_DECLARE_RANGE ); + + first = decl->u.DeclarationRange.First; + last = decl->u.DeclarationRange.Last; + mask = decl->Declaration.UsageMask; + + /* Do not touch WPOS.xy */ + if( first == 0 ) { + mask &= ~TGSI_WRITEMASK_XY; + if( mask == TGSI_WRITEMASK_NONE ) { + first++; + } + } + + for( i = first; i <= last; i++ ) { + for( j = 0; j < NUM_CHANNELS; j++ ) { + if( mask & (1 << j) ) { + switch( decl->Interpolation.Interpolate ) { + case TGSI_INTERPOLATE_CONSTANT: + emit_coef_a0( func, 0, i, j ); + emit_inputs( func, 0, i, j ); + break; + + case TGSI_INTERPOLATE_LINEAR: + emit_inputf( func, 0, 0, TGSI_SWIZZLE_X ); + emit_coef_dadx( func, 1, i, j ); + emit_inputf( func, 2, 0, TGSI_SWIZZLE_Y ); + emit_coef_dady( func, 3, i, j ); + emit_mul( func, 0, 1 ); /* x * dadx */ + emit_coef_a0( func, 4, i, j ); + emit_mul( func, 2, 3 ); /* y * dady */ + emit_add( func, 0, 4 ); /* x * dadx + a0 */ + emit_add( func, 0, 2 ); /* x * dadx + y * dady + a0 */ + emit_inputs( func, 0, i, j ); + break; + + case TGSI_INTERPOLATE_PERSPECTIVE: + emit_inputf( func, 0, 0, TGSI_SWIZZLE_X ); + emit_coef_dadx( func, 1, i, j ); + emit_inputf( func, 2, 0, TGSI_SWIZZLE_Y ); + emit_coef_dady( func, 3, i, j ); + emit_mul( func, 0, 1 ); /* x * dadx */ + emit_inputf( func, 4, 0, TGSI_SWIZZLE_W ); + emit_coef_a0( func, 5, i, j ); + emit_rcp( func, 4, 4 ); /* 1.0 / w */ + emit_mul( func, 2, 3 ); /* y * dady */ + emit_add( func, 0, 5 ); /* x * dadx + a0 */ + emit_add( func, 0, 2 ); /* x * dadx + y * dady + a0 */ + emit_mul( func, 0, 4 ); /* (x * dadx + y * dady + a0) / w */ + emit_inputs( func, 0, i, j ); + break; + + default: + assert( 0 ); + } + } + } + } + } +} + unsigned tgsi_emit_sse2( struct tgsi_token *tokens, @@ -1715,4 +1879,82 @@ tgsi_emit_sse2( return 1; } +/** + * Fragment shaders are responsible for interpolating shader inputs. Because on + * x86 we have only 4 GP registers, and here we have 5 shader arguments (input, + * output, const, temp and coef), the code is split into two phases -- + * DECLARATION and INSTRUCTION phase. + * GP register holding the output argument is aliased with the coeff argument, + * as outputs are not needed in the DECLARATION phase. + */ +unsigned +tgsi_emit_sse2_fs( + struct tgsi_token *tokens, + struct x86_function *func ) +{ + struct tgsi_parse_context parse; + boolean instruction_phase = FALSE; + + func->csr = func->store; + + /* DECLARATION phase, do not load output argument. */ + x86_mov( + func, + get_input_base(), + get_argument( 0 ) ); + x86_mov( + func, + get_const_base(), + get_argument( 2 ) ); + x86_mov( + func, + get_temp_base(), + get_argument( 3 ) ); + x86_mov( + func, + get_coef_base(), + get_argument( 4 ) ); + + tgsi_parse_init( &parse, tokens ); + + while( !tgsi_parse_end_of_tokens( &parse ) ) { + tgsi_parse_token( &parse ); + + switch( parse.FullToken.Token.Type ) { + case TGSI_TOKEN_TYPE_DECLARATION: + emit_declaration( + func, + &parse.FullToken.FullDeclaration ); + break; + + case TGSI_TOKEN_TYPE_INSTRUCTION: + if( !instruction_phase ) { + /* INSTRUCTION phase, overwrite coeff with output. */ + instruction_phase = TRUE; + x86_mov( + func, + get_output_base(), + get_argument( 1 ) ); + } + emit_instruction( + func, + &parse.FullToken.FullInstruction ); + break; + + default: + assert( 0 ); + } + } + + tgsi_parse_free( &parse ); + +#ifdef WIN32 + x86_retw( func, 16 ); +#else + x86_ret( func ); +#endif + + return 1; +} + #endif |