diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-07-18 19:46:19 -0600 |
---|---|---|
committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-07-18 19:46:19 -0600 |
commit | 72e57b52f02db17d47dce23abedea72a47af806e (patch) | |
tree | 3de4154401c380cad6ac1aee984c457dcad9038e /src/mesa/shader/slang | |
parent | 7218626cf5ecc00fc7ef994253c20c9a2df35cc2 (diff) | |
download | external_mesa3d-72e57b52f02db17d47dce23abedea72a47af806e.zip external_mesa3d-72e57b52f02db17d47dce23abedea72a47af806e.tar.gz external_mesa3d-72e57b52f02db17d47dce23abedea72a47af806e.tar.bz2 |
mesa: glsl: various writemask/swizzle improvements and clean-ups
Diffstat (limited to 'src/mesa/shader/slang')
-rw-r--r-- | src/mesa/shader/slang/slang_codegen.c | 62 | ||||
-rw-r--r-- | src/mesa/shader/slang/slang_emit.c | 67 | ||||
-rw-r--r-- | src/mesa/shader/slang/slang_ir.c | 18 |
3 files changed, 79 insertions, 68 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c index 6261aab..d4d2e34 100644 --- a/src/mesa/shader/slang/slang_codegen.c +++ b/src/mesa/shader/slang/slang_codegen.c @@ -1410,6 +1410,27 @@ slang_find_asm_info(const char *name) /** + * Return the default swizzle mask for accessing a variable of the + * given size (in floats). If size = 1, comp is used to identify + * which component [0..3] of the register holds the variable. + */ +static GLuint +_slang_var_swizzle(GLint size, GLint comp) +{ + switch (size) { + case 1: + return MAKE_SWIZZLE4(comp, comp, comp, comp); + case 2: + return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL); + case 3: + return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_NIL); + default: + return SWIZZLE_XYZW; + } +} + + +/** * Some write-masked assignments are simple, but others are hard. * Simple example: * vec3 v; @@ -3063,6 +3084,7 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, int dbg = 0; const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier); const GLint texIndex = sampler_to_texture_index(var->type.specifier.type); + const GLint size = _slang_sizeof_type_specifier(&var->type.specifier); if (texIndex != -1) { /* This is a texture sampler variable... @@ -3076,8 +3098,8 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, } else if (var->type.qualifier == SLANG_QUAL_UNIFORM) { /* Uniform variable */ - const GLint size = _slang_sizeof_type_specifier(&var->type.specifier) - * MAX2(var->array_len, 1); + const GLint totalSize = size * MAX2(var->array_len, 1); + const GLuint swizzle = _slang_var_swizzle(totalSize, 0); if (prog) { /* user-defined uniform */ if (datatype == GL_NONE) { @@ -3106,8 +3128,10 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, } else { GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName, - size, datatype); - store = _slang_new_ir_storage(PROGRAM_UNIFORM, uniformLoc, size); + totalSize, datatype); + store = _slang_new_ir_storage_swz(PROGRAM_UNIFORM, uniformLoc, + totalSize, swizzle); + printf("GLOBAL USER UNIFORM %s size %d\n", varName, totalSize); } } else { @@ -3115,33 +3139,40 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, /* We know it's a uniform, but don't allocate storage unless * it's really used. */ - store = _slang_new_ir_storage(PROGRAM_STATE_VAR, -1, size); + store = _slang_new_ir_storage_swz(PROGRAM_STATE_VAR, -1, + totalSize, swizzle); } - if (dbg) printf("UNIFORM (sz %d) ", size); + if (dbg) printf("UNIFORM (sz %d) ", totalSize); } else if (var->type.qualifier == SLANG_QUAL_VARYING) { - const GLint size = 4; /* XXX fix */ if (prog) { /* user-defined varying */ GLint varyingLoc = _mesa_add_varying(prog->Varying, varName, size); - store = _slang_new_ir_storage(PROGRAM_VARYING, varyingLoc, size); + GLuint swizzle = _slang_var_swizzle(size, 0); + store = _slang_new_ir_storage_swz(PROGRAM_VARYING, varyingLoc, + size, swizzle); } else { /* pre-defined varying, like gl_Color or gl_TexCoord */ if (type == SLANG_UNIT_FRAGMENT_BUILTIN) { + /* fragment program input */ GLuint swizzle; GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB, &swizzle); assert(index >= 0); - store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle); assert(index < FRAG_ATTRIB_MAX); + store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, + size, swizzle); } else { + /* vertex program output */ GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB); + GLuint swizzle = _slang_var_swizzle(size, 0); assert(index >= 0); - assert(type == SLANG_UNIT_VERTEX_BUILTIN); - store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size); assert(index < VERT_RESULT_MAX); + assert(type == SLANG_UNIT_VERTEX_BUILTIN); + store = _slang_new_ir_storage_swz(PROGRAM_OUTPUT, index, + size, swizzle); } if (dbg) printf("V/F "); } @@ -3150,7 +3181,6 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, else if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE) { if (prog) { /* user-defined vertex attribute */ - const GLint size = _slang_sizeof_type_specifier(&var->type.specifier); const GLint attr = -1; /* unknown */ GLint index = _mesa_add_attribute(prog->Attributes, varName, size, attr); @@ -3163,7 +3193,6 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, GLuint swizzle; GLint index = _slang_input_index(varName, GL_VERTEX_PROGRAM_ARB, &swizzle); - GLint size = 4; /* XXX? */ assert(index >= 0); store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle); } @@ -3173,27 +3202,24 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var, GLuint swizzle = SWIZZLE_XYZW; /* silence compiler warning */ GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB, &swizzle); - GLint size = 4; /* XXX? */ store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle); if (dbg) printf("INPUT "); } else if (var->type.qualifier == SLANG_QUAL_FIXEDOUTPUT) { if (type == SLANG_UNIT_VERTEX_BUILTIN) { GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB); - GLint size = 4; /* XXX? */ store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size); } else { GLint index = _slang_output_index(varName, GL_FRAGMENT_PROGRAM_ARB); - GLint size = 4; /* XXX? */ + GLint specialSize = 4; /* treat all fragment outputs as float[4] */ assert(type == SLANG_UNIT_FRAGMENT_BUILTIN); - store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size); + store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, specialSize); } if (dbg) printf("OUTPUT "); } else if (var->type.qualifier == SLANG_QUAL_CONST && !prog) { /* pre-defined global constant, like gl_MaxLights */ - const GLint size = _slang_sizeof_type_specifier(&var->type.specifier); store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size); if (dbg) printf("CONST "); } diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c index ec8ed0b..291fd7c 100644 --- a/src/mesa/shader/slang/slang_emit.c +++ b/src/mesa/shader/slang/slang_emit.c @@ -171,21 +171,33 @@ free_temp_storage(slang_var_table *vt, slang_ir_node *n) /** - * Remove any SWIZZLE_NIL terms from given swizzle mask (smear prev term). - * Ex: fix_swizzle("zyNN") -> "zyyy" - * XXX should put in the default component for the position... + * Remove any SWIZZLE_NIL terms from given swizzle mask. + * For a swizzle like .z??? generate .zzzz (replicate single component). + * Else, for .wx?? generate .wxzw (insert default component for the position). */ static GLuint fix_swizzle(GLuint swizzle) { - GLuint swz[4], i; - for (i = 0; i < 4; i++) { - swz[i] = GET_SWZ(swizzle, i); - if (swz[i] == SWIZZLE_NIL) { - swz[i] = swz[i - 1]; - } + GLuint c0 = GET_SWZ(swizzle, 0), + c1 = GET_SWZ(swizzle, 1), + c2 = GET_SWZ(swizzle, 2), + c3 = GET_SWZ(swizzle, 3); + if (c1 == SWIZZLE_NIL && c2 == SWIZZLE_NIL && c3 == SWIZZLE_NIL) { + /* smear first component across all positions */ + c1 = c2 = c3 = c0; } - return MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]); + else { + /* insert default swizzle components */ + if (c0 == SWIZZLE_NIL) + c0 = SWIZZLE_X; + if (c1 == SWIZZLE_NIL) + c1 = SWIZZLE_Y; + if (c2 == SWIZZLE_NIL) + c2 = SWIZZLE_Z; + if (c3 == SWIZZLE_NIL) + c3 = SWIZZLE_W; + } + return MAKE_SWIZZLE4(c0, c1, c2, c3); } @@ -216,6 +228,7 @@ storage_to_dst_reg(struct prog_dst_register *dst, const slang_ir_storage *st, assert(size >= 1); assert(size <= 4); + if (size == 1) { GLuint comp = GET_SWZ(swizzle, 0); assert(comp < 4); @@ -233,13 +246,6 @@ storage_to_dst_reg(struct prog_dst_register *dst, const slang_ir_storage *st, static void storage_to_src_reg(struct prog_src_register *src, const slang_ir_storage *st) { - static const GLuint defaultSwizzle[4] = { - MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X), - MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W), - MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W), - MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W) - }; - const GLint size = st->Size; const GLboolean relAddr = st->RelAddr; GLint index = st->Index; GLuint swizzle = st->Swizzle; @@ -250,7 +256,6 @@ storage_to_src_reg(struct prog_src_register *src, const slang_ir_storage *st) index += st->Index; swizzle = _slang_swizzle_swizzle(st->Swizzle, swizzle); } - swizzle = fix_swizzle(swizzle); assert(st->File >= 0); assert(st->File < PROGRAM_UNDEFINED); @@ -259,20 +264,14 @@ storage_to_src_reg(struct prog_src_register *src, const slang_ir_storage *st) assert(index >= 0); src->Index = index; - assert(size >= 1); - assert(size <= 4); + swizzle = fix_swizzle(swizzle); + assert(GET_SWZ(swizzle, 0) <= SWIZZLE_W); + assert(GET_SWZ(swizzle, 1) <= SWIZZLE_W); + assert(GET_SWZ(swizzle, 2) <= SWIZZLE_W); + assert(GET_SWZ(swizzle, 3) <= SWIZZLE_W); + src->Swizzle = swizzle; src->RelAddr = relAddr; - - if (swizzle != SWIZZLE_NOOP) - src->Swizzle = swizzle; - else - src->Swizzle = defaultSwizzle[size - 1]; /*XXX really need this?*/ - - assert(GET_SWZ(src->Swizzle, 0) <= 3); - assert(GET_SWZ(src->Swizzle, 1) <= 3); - assert(GET_SWZ(src->Swizzle, 2) <= 3); - assert(GET_SWZ(src->Swizzle, 3) <= 3); } @@ -582,8 +581,7 @@ emit_arith(slang_emit_info *emitInfo, slang_ir_node *n) /* result storage */ if (!n->Store) { - GLint size = n->Children[0]->Store - ? n->Children[0]->Store->Size : info->ResultSize; + GLint size = info->ResultSize; if (!alloc_temp_storage(emitInfo, n, size)) return NULL; #if 0000 /* this should work, but doesn't yet */ @@ -591,6 +589,8 @@ emit_arith(slang_emit_info *emitInfo, slang_ir_node *n) n->Writemask = WRITEMASK_XY; else if (size == 3) n->Writemask = WRITEMASK_XYZ; + else if (size == 1) + n->Writemask = WRITEMASK_X << GET_SWZ(n->Store->Swizzle,0); #endif } @@ -1045,10 +1045,9 @@ emit_move(slang_emit_info *emitInfo, slang_ir_node *n) assert(n->Children[0]->Store->Index >= 0); /* use tighter writemask when possible */ -#if 0000 /* XXX enable this after more testing... */ if (n->Writemask == WRITEMASK_XYZW) n->Writemask = inst->DstReg.WriteMask; -#endif + storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store, n->Writemask); return inst; } diff --git a/src/mesa/shader/slang/slang_ir.c b/src/mesa/shader/slang/slang_ir.c index ce4a198..a414036 100644 --- a/src/mesa/shader/slang/slang_ir.c +++ b/src/mesa/shader/slang/slang_ir.c @@ -240,20 +240,6 @@ _slang_free_ir_tree(slang_ir_node *n) static const char * -swizzle_string(GLuint swizzle) -{ - static char s[6]; - GLuint i; - s[0] = '.'; - for (i = 1; i < 5; i++) { - s[i] = "xyzw"[GET_SWZ(swizzle, i-1)]; - } - s[i] = 0; - return s; -} - - -static const char * writemask_string(GLuint writemask) { static char s[6]; @@ -410,7 +396,7 @@ _slang_print_ir_tree(const slang_ir_node *n, int indent) case IR_VAR: printf("VAR %s%s at %s store %p\n", (n->Var ? (char *) n->Var->a_name : "TEMP"), - swizzle_string(n->Store->Swizzle), + _mesa_swizzle_string(n->Store->Swizzle, 0, 0), storage_string(n->Store), (void*) n->Store); break; case IR_VAR_DECL: @@ -437,7 +423,7 @@ _slang_print_ir_tree(const slang_ir_node *n, int indent) break; case IR_SWIZZLE: printf("SWIZZLE %s of (store %p) \n", - swizzle_string(n->Store->Swizzle), (void*) n->Store); + _mesa_swizzle_string(n->Store->Swizzle, 0, 0), (void*) n->Store); _slang_print_ir_tree(n->Children[0], indent + 3); break; default: |