diff options
Diffstat (limited to 'src/mesa/pipe/llvm/gallivm.cpp')
| -rw-r--r-- | src/mesa/pipe/llvm/gallivm.cpp | 175 |
1 files changed, 164 insertions, 11 deletions
diff --git a/src/mesa/pipe/llvm/gallivm.cpp b/src/mesa/pipe/llvm/gallivm.cpp index 6642f15498b..b5e90b037e7 100644 --- a/src/mesa/pipe/llvm/gallivm.cpp +++ b/src/mesa/pipe/llvm/gallivm.cpp @@ -68,12 +68,21 @@ #include <fstream> #include <iostream> +struct gallivm_interpolate { + int attrib; + int chan; + int type; +}; + struct gallivm_prog { llvm::Module *module; void *function; int num_consts; int id; enum gallivm_shader_type type; + + struct gallivm_interpolate interpolators[32*4]; //FIXME: this might not be enough for some shaders + int num_interp; }; struct gallivm_cpu_engine { @@ -141,12 +150,71 @@ static inline void AddStandardCompilePasses(PassManager &PM) { PM.add(createConstantMergePass()); // Merge dup global constants } +static inline void +add_interpolator(struct gallivm_prog *prog, + struct gallivm_interpolate *interp) +{ + prog->interpolators[prog->num_interp] = *interp; + ++prog->num_interp; +} static void -translate_declaration(llvm::Module *module, +translate_declaration(struct gallivm_prog *prog, + llvm::Module *module, Storage *storage, struct tgsi_full_declaration *decl, struct tgsi_full_declaration *fd) { + if (decl->Declaration.File == TGSI_FILE_INPUT) { + unsigned first, last, mask; + uint interp_method; + + 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++; + if (first > last) { + return; + } + } + } + + interp_method = decl->Interpolation.Interpolate; + + if (mask == TGSI_WRITEMASK_XYZW) { + unsigned i, j; + + for (i = first; i <= last; i++) { + for (j = 0; j < NUM_CHANNELS; j++) { + //interp( mach, i, j ); + struct gallivm_interpolate interp; + interp.type = interp_method; + interp.attrib = i; + interp.chan = j; + add_interpolator(prog, &interp); + } + } + } else { + unsigned i, j; + for( j = 0; j < NUM_CHANNELS; j++ ) { + if( mask & (1 << j) ) { + for( i = first; i <= last; i++ ) { + struct gallivm_interpolate interp; + interp.type = interp_method; + interp.attrib = i; + interp.chan = j; + add_interpolator(prog, &interp); + } + } + } + } + } } @@ -686,7 +754,7 @@ tgsi_to_llvm(struct gallivm_prog *prog, const struct tgsi_token *tokens) switch (parse.FullToken.Token.Type) { case TGSI_TOKEN_TYPE_DECLARATION: - translate_declaration(mod, &storage, + translate_declaration(prog, mod, &storage, &parse.FullToken.FullDeclaration, &fd); break; @@ -791,24 +859,83 @@ int gallivm_prog_exec(struct gallivm_prog *prog, } + +static inline void +constant_interpolation(float (*inputs)[16][4], + const struct tgsi_interp_coef *coefs, + unsigned attrib, + unsigned chan) +{ + unsigned i; + + for (i = 0; i < QUAD_SIZE; ++i) { + inputs[i][attrib][chan] = coefs[attrib].a0[chan]; + } +} + +static inline void +linear_interpolation(float (*inputs)[16][4], + const struct tgsi_interp_coef *coefs, + unsigned attrib, + unsigned chan) +{ + unsigned i; + + for( i = 0; i < QUAD_SIZE; i++ ) { + const float x = inputs[i][0][0]; + const float y = inputs[i][0][1]; + + inputs[i][attrib][chan] = + coefs[attrib].a0[chan] + + coefs[attrib].dadx[chan] * x + + coefs[attrib].dady[chan] * y; + } +} + +static inline void +perspective_interpolation(float (*inputs)[16][4], + const struct tgsi_interp_coef *coefs, + unsigned attrib, + unsigned chan ) +{ + unsigned i; + + for( i = 0; i < QUAD_SIZE; i++ ) { + const float x = inputs[i][0][0]; + const float y = inputs[i][0][1]; + /* WPOS.w here is really 1/w */ + const float w = 1.0f / inputs[i][0][3]; + assert(inputs[i][0][3] != 0.0); + + inputs[i][attrib][chan] = + (coefs[attrib].a0[chan] + + coefs[attrib].dadx[chan] * x + + coefs[attrib].dady[chan] * y) * w; + } +} + typedef int (*fragment_shader_runner)(float x, float y, - float (*dests)[32][4], - struct tgsi_interp_coef *coef, - float (*consts)[4], int num_consts, - struct tgsi_sampler *samplers, - unsigned *sampler_units); + float (*dests)[16][4], + float (*inputs)[16][4], + int num_attribs, + float (*consts)[4], int num_consts, + struct tgsi_sampler *samplers, + unsigned *sampler_units); int gallivm_fragment_shader_exec(struct gallivm_prog *prog, - float x, float y, - float (*dests)[32][4], - struct tgsi_interp_coef *coef, + float fx, float fy, + float (*dests)[16][4], + float (*inputs)[16][4], float (*consts)[4], struct tgsi_sampler *samplers, unsigned *sampler_units) { fragment_shader_runner runner = reinterpret_cast<fragment_shader_runner>(prog->function); assert(runner); - runner(x, y, dests, coef, consts, prog->num_consts, samplers, sampler_units); + + runner(fx, fy, dests, inputs, prog->num_interp, + consts, prog->num_consts, + samplers, sampler_units); return 0; } @@ -928,8 +1055,34 @@ struct gallivm_cpu_engine * gallivm_global_cpu_engine() return CPU; } +void gallivm_prog_inputs_interpolate(struct gallivm_prog *prog, + float (*inputs)[16][4], + const struct tgsi_interp_coef *coef) +{ + for (int i = 0; i < prog->num_interp; ++i) { + const gallivm_interpolate &interp = prog->interpolators[i]; + switch (interp.type) { + case TGSI_INTERPOLATE_CONSTANT: + constant_interpolation(inputs, coef, interp.attrib, interp.chan); + break; + + case TGSI_INTERPOLATE_LINEAR: + linear_interpolation(inputs, coef, interp.attrib, interp.chan); + break; + + case TGSI_INTERPOLATE_PERSPECTIVE: + perspective_interpolation(inputs, coef, interp.attrib, interp.chan); + break; + + default: + assert( 0 ); + } + } +} + #endif /* MESA_LLVM */ + |