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Location: alysbrooks-public/games/isometric-park-fna/FNA/lib/MojoShader/profiles/mojoshader_profile_metal.c - annotation

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Commit Description:
Various UI improvements.
Commit Description:
Various UI improvements.
References:
r291:6a7d5e8510b1 default
File last commit:
r0:e33f209de7e5 default
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FNA/lib/MojoShader/profiles/mojoshader_profile_metal.c
2311 lines | 80.9 KiB | text/x-c | CLexer
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alys
Early working version (including all dependencies, lol).
 r0 /**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#define __MOJOSHADER_INTERNAL__ 1
#include "mojoshader_profile.h"
#pragma GCC visibility push(hidden)
// !!! FIXME: A lot of this is cut-and-paste from the GLSL version.
#if SUPPORT_PROFILE_METAL
#define EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(op) \
void emit_METAL_##op(Context *ctx) { \
fail(ctx, #op " unimplemented in Metal profile"); \
}
static inline const char *get_METAL_register_string(Context *ctx,
const RegisterType regtype, const int regnum,
char *regnum_str, const size_t regnum_size)
{
// turns out these are identical at the moment.
return get_D3D_register_string(ctx,regtype,regnum,regnum_str,regnum_size);
} // get_METAL_register_string
const char *get_METAL_uniform_type(Context *ctx, const RegisterType rtype)
{
switch (rtype)
{
case REG_TYPE_CONST: return "float4";
case REG_TYPE_CONSTINT: return "int4";
case REG_TYPE_CONSTBOOL: return "bool";
default: fail(ctx, "BUG: used a uniform we don't know how to define.");
} // switch
return NULL;
} // get_METAL_uniform_type
const char *get_METAL_varname_in_buf(Context *ctx, RegisterType rt,
int regnum, char *buf,
const size_t len)
{
char regnum_str[16];
const char *regtype_str = get_METAL_register_string(ctx, rt, regnum,
regnum_str, sizeof (regnum_str));
// We don't separate vars with vs_ or ps_ here, because, for the most part,
// there are only local vars in Metal shaders.
snprintf(buf, len, "%s%s", regtype_str, regnum_str);
return buf;
} // get_METAL_varname_in_buf
const char *get_METAL_varname(Context *ctx, RegisterType rt, int regnum)
{
char buf[64];
get_METAL_varname_in_buf(ctx, rt, regnum, buf, sizeof (buf));
return StrDup(ctx, buf);
} // get_METAL_varname
static inline const char *get_METAL_const_array_varname_in_buf(Context *ctx,
const int base, const int size,
char *buf, const size_t buflen)
{
snprintf(buf, buflen, "const_array_%d_%d", base, size);
return buf;
} // get_METAL_const_array_varname_in_buf
const char *get_METAL_const_array_varname(Context *ctx, int base, int size)
{
char buf[64];
get_METAL_const_array_varname_in_buf(ctx, base, size, buf, sizeof (buf));
return StrDup(ctx, buf);
} // get_METAL_const_array_varname
static inline const char *get_METAL_input_array_varname(Context *ctx,
char *buf, const size_t buflen)
{
snprintf(buf, buflen, "%s", "vertex_input_array");
return buf;
} // get_METAL_input_array_varname
const char *get_METAL_uniform_array_varname(Context *ctx,
const RegisterType regtype,
char *buf, const size_t len)
{
const char *shadertype = ctx->shader_type_str;
const char *type = get_METAL_uniform_type(ctx, regtype);
snprintf(buf, len, "uniforms.uniforms_%s", type);
return buf;
} // get_METAL_uniform_array_varname
const char *get_METAL_destarg_varname(Context *ctx, char *buf, size_t len)
{
const DestArgInfo *arg = &ctx->dest_arg;
return get_METAL_varname_in_buf(ctx, arg->regtype, arg->regnum, buf, len);
} // get_METAL_destarg_varname
const char *get_METAL_srcarg_varname(Context *ctx, const size_t idx,
char *buf, size_t len)
{
if (idx >= STATICARRAYLEN(ctx->source_args))
{
fail(ctx, "Too many source args");
*buf = '\0';
return buf;
} // if
const SourceArgInfo *arg = &ctx->source_args[idx];
return get_METAL_varname_in_buf(ctx, arg->regtype, arg->regnum, buf, len);
} // get_METAL_srcarg_varname
const char *make_METAL_destarg_assign(Context *, char *, const size_t,
const char *, ...) ISPRINTF(4,5);
const char *make_METAL_destarg_assign(Context *ctx, char *buf,
const size_t buflen,
const char *fmt, ...)
{
int need_parens = 0;
const DestArgInfo *arg = &ctx->dest_arg;
if (arg->writemask == 0)
{
*buf = '\0';
return buf; // no writemask? It's a no-op.
} // if
char clampbuf[32] = { '\0' };
const char *clampleft = "";
const char *clampright = "";
if (arg->result_mod & MOD_SATURATE)
{
ctx->metal_need_header_common = 1;
const int vecsize = vecsize_from_writemask(arg->writemask);
clampleft = "clamp(";
if (vecsize == 1)
clampright = ", 0.0, 1.0)";
else
{
snprintf(clampbuf, sizeof (clampbuf),
", float%d(0.0), float%d(1.0))", vecsize, vecsize);
clampright = clampbuf;
} // else
} // if
// MSDN says MOD_PP is a hint and many implementations ignore it. So do we.
// CENTROID only allowed in DCL opcodes, which shouldn't come through here.
assert((arg->result_mod & MOD_CENTROID) == 0);
if (ctx->predicated)
{
fail(ctx, "predicated destinations unsupported"); // !!! FIXME
*buf = '\0';
return buf;
} // if
char operation[256];
va_list ap;
va_start(ap, fmt);
const int len = vsnprintf(operation, sizeof (operation), fmt, ap);
va_end(ap);
if (len >= sizeof (operation))
{
fail(ctx, "operation string too large"); // I'm lazy. :P
*buf = '\0';
return buf;
} // if
const char *result_shift_str = "";
switch (arg->result_shift)
{
case 0x1: result_shift_str = " * 2.0"; break;
case 0x2: result_shift_str = " * 4.0"; break;
case 0x3: result_shift_str = " * 8.0"; break;
case 0xD: result_shift_str = " / 8.0"; break;
case 0xE: result_shift_str = " / 4.0"; break;
case 0xF: result_shift_str = " / 2.0"; break;
} // switch
need_parens |= (result_shift_str[0] != '\0');
char regnum_str[16];
const char *regtype_str = get_METAL_register_string(ctx, arg->regtype,
arg->regnum, regnum_str,
sizeof (regnum_str));
char writemask_str[6];
size_t i = 0;
const int scalar = isscalar(ctx, ctx->shader_type, arg->regtype, arg->regnum);
if (!scalar && !writemask_xyzw(arg->writemask))
{
writemask_str[i++] = '.';
if (arg->writemask0) writemask_str[i++] = 'x';
if (arg->writemask1) writemask_str[i++] = 'y';
if (arg->writemask2) writemask_str[i++] = 'z';
if (arg->writemask3) writemask_str[i++] = 'w';
} // if
writemask_str[i] = '\0';
assert(i < sizeof (writemask_str));
const char *leftparen = (need_parens) ? "(" : "";
const char *rightparen = (need_parens) ? ")" : "";
snprintf(buf, buflen, "%s%s%s = %s%s%s%s%s%s;",
regtype_str, regnum_str, writemask_str,
clampleft, leftparen, operation, rightparen, result_shift_str,
clampright);
// !!! FIXME: make sure the scratch buffer was large enough.
return buf;
} // make_METAL_destarg_assign
char *make_METAL_swizzle_string(char *swiz_str, const size_t strsize,
const int swizzle, const int writemask)
{
size_t i = 0;
if ( (!no_swizzle(swizzle)) || (!writemask_xyzw(writemask)) )
{
const int writemask0 = (writemask >> 0) & 0x1;
const int writemask1 = (writemask >> 1) & 0x1;
const int writemask2 = (writemask >> 2) & 0x1;
const int writemask3 = (writemask >> 3) & 0x1;
const int swizzle_x = (swizzle >> 0) & 0x3;
const int swizzle_y = (swizzle >> 2) & 0x3;
const int swizzle_z = (swizzle >> 4) & 0x3;
const int swizzle_w = (swizzle >> 6) & 0x3;
swiz_str[i++] = '.';
if (writemask0) swiz_str[i++] = swizzle_channels[swizzle_x];
if (writemask1) swiz_str[i++] = swizzle_channels[swizzle_y];
if (writemask2) swiz_str[i++] = swizzle_channels[swizzle_z];
if (writemask3) swiz_str[i++] = swizzle_channels[swizzle_w];
} // if
assert(i < strsize);
swiz_str[i] = '\0';
return swiz_str;
} // make_METAL_swizzle_string
const char *make_METAL_srcarg_string(Context *ctx, const size_t idx,
const int writemask, char *buf,
const size_t buflen)
{
*buf = '\0';
if (idx >= STATICARRAYLEN(ctx->source_args))
{
fail(ctx, "Too many source args");
return buf;
} // if
const SourceArgInfo *arg = &ctx->source_args[idx];
const char *premod_str = "";
const char *postmod_str = "";
switch (arg->src_mod)
{
case SRCMOD_NEGATE:
premod_str = "-";
break;
case SRCMOD_BIASNEGATE:
premod_str = "-(";
postmod_str = " - 0.5)";
break;
case SRCMOD_BIAS:
premod_str = "(";
postmod_str = " - 0.5)";
break;
case SRCMOD_SIGNNEGATE:
premod_str = "-((";
postmod_str = " - 0.5) * 2.0)";
break;
case SRCMOD_SIGN:
premod_str = "((";
postmod_str = " - 0.5) * 2.0)";
break;
case SRCMOD_COMPLEMENT:
premod_str = "(1.0 - ";
postmod_str = ")";
break;
case SRCMOD_X2NEGATE:
premod_str = "-(";
postmod_str = " * 2.0)";
break;
case SRCMOD_X2:
premod_str = "(";
postmod_str = " * 2.0)";
break;
case SRCMOD_DZ:
fail(ctx, "SRCMOD_DZ unsupported"); return buf; // !!! FIXME
postmod_str = "_dz";
break;
case SRCMOD_DW:
fail(ctx, "SRCMOD_DW unsupported"); return buf; // !!! FIXME
postmod_str = "_dw";
break;
case SRCMOD_ABSNEGATE:
ctx->metal_need_header_math = 1;
premod_str = "-abs(";
postmod_str = ")";
break;
case SRCMOD_ABS:
ctx->metal_need_header_math = 1;
premod_str = "abs(";
postmod_str = ")";
break;
case SRCMOD_NOT:
premod_str = "!";
break;
case SRCMOD_NONE:
case SRCMOD_TOTAL:
break; // stop compiler whining.
} // switch
const char *regtype_str = NULL;
if (!arg->relative)
{
regtype_str = get_METAL_varname_in_buf(ctx, arg->regtype, arg->regnum,
(char *) alloca(64), 64);
} // if
const char *rel_lbracket = "";
char rel_offset[32] = { '\0' };
const char *rel_rbracket = "";
char rel_swizzle[4] = { '\0' };
const char *rel_regtype_str = "";
if (arg->relative)
{
if (arg->regtype == REG_TYPE_INPUT)
regtype_str=get_METAL_input_array_varname(ctx,(char*)alloca(64),64);
else
{
assert(arg->regtype == REG_TYPE_CONST);
const int arrayidx = arg->relative_array->index;
const int offset = arg->regnum - arrayidx;
assert(offset >= 0);
if (arg->relative_array->constant)
{
const int arraysize = arg->relative_array->count;
regtype_str = get_METAL_const_array_varname_in_buf(ctx,
arrayidx, arraysize, (char *) alloca(64), 64);
if (offset != 0)
snprintf(rel_offset, sizeof (rel_offset), "%d + ", offset);
} // if
else
{
regtype_str = get_METAL_uniform_array_varname(ctx, arg->regtype,
(char *) alloca(64), 64);
if (offset == 0)
{
snprintf(rel_offset, sizeof (rel_offset),
"ARRAYBASE_%d + ", arrayidx);
} // if
else
{
snprintf(rel_offset, sizeof (rel_offset),
"(ARRAYBASE_%d + %d) + ", arrayidx, offset);
} // else
} // else
} // else
rel_lbracket = "[";
rel_regtype_str = get_METAL_varname_in_buf(ctx, arg->relative_regtype,
arg->relative_regnum,
(char *) alloca(64), 64);
rel_swizzle[0] = '.';
rel_swizzle[1] = swizzle_channels[arg->relative_component];
rel_swizzle[2] = '\0';
rel_rbracket = "]";
} // if
char swiz_str[6] = { '\0' };
if (!isscalar(ctx, ctx->shader_type, arg->regtype, arg->regnum))
{
make_METAL_swizzle_string(swiz_str, sizeof (swiz_str),
arg->swizzle, writemask);
} // if
if (regtype_str == NULL)
{
fail(ctx, "Unknown source register type.");
return buf;
} // if
snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s",
premod_str, regtype_str, rel_lbracket, rel_offset,
rel_regtype_str, rel_swizzle, rel_rbracket, swiz_str,
postmod_str);
// !!! FIXME: make sure the scratch buffer was large enough.
return buf;
} // make_METAL_srcarg_string
// generate some convenience functions.
#define MAKE_METAL_SRCARG_STRING_(mask, bitmask) \
static inline const char *make_METAL_srcarg_string_##mask(Context *ctx, \
const size_t idx, char *buf, \
const size_t buflen) { \
return make_METAL_srcarg_string(ctx, idx, bitmask, buf, buflen); \
}
MAKE_METAL_SRCARG_STRING_(x, (1 << 0))
MAKE_METAL_SRCARG_STRING_(y, (1 << 1))
MAKE_METAL_SRCARG_STRING_(z, (1 << 2))
MAKE_METAL_SRCARG_STRING_(w, (1 << 3))
MAKE_METAL_SRCARG_STRING_(scalar, (1 << 0))
MAKE_METAL_SRCARG_STRING_(full, 0xF)
MAKE_METAL_SRCARG_STRING_(masked, ctx->dest_arg.writemask)
MAKE_METAL_SRCARG_STRING_(vec3, 0x7)
MAKE_METAL_SRCARG_STRING_(vec2, 0x3)
#undef MAKE_METAL_SRCARG_STRING_
// special cases for comparison opcodes...
const char *get_METAL_comparison_string_scalar(Context *ctx)
{
const char *comps[] = { "", ">", "==", ">=", "<", "!=", "<=" };
if (ctx->instruction_controls >= STATICARRAYLEN(comps))
{
fail(ctx, "unknown comparison control");
return "";
} // if
return comps[ctx->instruction_controls];
} // get_METAL_comparison_string_scalar
const char *get_METAL_comparison_string_vector(Context *ctx)
{
return get_METAL_comparison_string_scalar(ctx); // standard C operators work for vectors in Metal.
} // get_METAL_comparison_string_vector
void emit_METAL_start(Context *ctx, const char *profilestr)
{
if (!shader_is_vertex(ctx) && !shader_is_pixel(ctx))
{
failf(ctx, "Shader type %u unsupported in this profile.",
(uint) ctx->shader_type);
return;
} // if
if (!ctx->mainfn)
{
if (shader_is_vertex(ctx))
ctx->mainfn = StrDup(ctx, "VertexShader");
else if (shader_is_pixel(ctx))
ctx->mainfn = StrDup(ctx, "FragmentShader");
} // if
set_output(ctx, &ctx->mainline);
ctx->indent++;
} // emit_METAL_start
void emit_METAL_RET(Context *ctx);
void emit_METAL_end(Context *ctx)
{
// !!! FIXME: maybe handle this at a higher level?
// ps_1_* writes color to r0 instead oC0. We move it to the right place.
// We don't have to worry about a RET opcode messing this up, since
// RET isn't available before ps_2_0.
if (shader_is_pixel(ctx) && !shader_version_atleast(ctx, 2, 0))
{
set_used_register(ctx, REG_TYPE_COLOROUT, 0, 1);
output_line(ctx, "oC0 = r0;");
} // if
// !!! FIXME: maybe handle this at a higher level?
// force a RET opcode if we're at the end of the stream without one.
if (ctx->previous_opcode != OPCODE_RET)
emit_METAL_RET(ctx);
} // emit_METAL_end
void emit_METAL_phase(Context *ctx)
{
// no-op in Metal.
} // emit_METAL_phase
void emit_METAL_finalize(Context *ctx)
{
// If we had a relative addressing of REG_TYPE_INPUT, we need to build
// an array for it at the start of main(). GLSL doesn't let you specify
// arrays of attributes.
//float4 blah_array[BIGGEST_ARRAY];
if (ctx->have_relative_input_registers) // !!! FIXME
fail(ctx, "Relative addressing of input registers not supported.");
// Insert header includes we need...
push_output(ctx, &ctx->preflight);
#define INC_METAL_HEADER(name) \
if (ctx->metal_need_header_##name) { \
output_line(ctx, "#include <metal_" #name ">"); \
}
INC_METAL_HEADER(common);
INC_METAL_HEADER(math);
INC_METAL_HEADER(relational);
INC_METAL_HEADER(geometric);
INC_METAL_HEADER(graphics);
INC_METAL_HEADER(texture);
#undef INC_METAL_HEADER
output_blank_line(ctx);
output_line(ctx, "using namespace metal;");
output_blank_line(ctx);
pop_output(ctx);
// Fill in the shader's mainline function signature.
push_output(ctx, &ctx->mainline_intro);
output_line(ctx, "%s %s%s %s (",
shader_is_vertex(ctx) ? "vertex" : "fragment",
ctx->outputs ? ctx->mainfn : "void",
ctx->outputs ? "_Output" : "", ctx->mainfn);
pop_output(ctx);
push_output(ctx, &ctx->mainline_arguments);
ctx->indent++;
const int uniform_count = ctx->uniform_float4_count + ctx->uniform_int4_count + ctx->uniform_bool_count;
int commas = 0;
if (uniform_count) commas++;
if (ctx->inputs) commas++;
if (commas) commas--;
if (uniform_count > 0)
{
push_output(ctx, &ctx->globals);
output_line(ctx, "struct %s_Uniforms", ctx->mainfn);
output_line(ctx, "{");
ctx->indent++;
if (ctx->uniform_float4_count > 0)
output_line(ctx, "float4 uniforms_float4[%d];", ctx->uniform_float4_count);
if (ctx->uniform_int4_count > 0)
output_line(ctx, "int4 uniforms_int4[%d];", ctx->uniform_int4_count);
if (ctx->uniform_bool_count > 0)
output_line(ctx, "bool uniforms_bool[%d];", ctx->uniform_bool_count);
ctx->indent--;
output_line(ctx, "};");
pop_output(ctx);
output_line(ctx, "constant %s_Uniforms &uniforms [[buffer(16)]]%s", ctx->mainfn, commas ? "," : "");
commas--;
} // if
if (ctx->inputs)
{
output_line(ctx, "%s_Input input [[stage_in]]%s", ctx->mainfn, commas ? "," : "");
commas--;
} // if
ctx->indent--;
output_line(ctx, ") {");
if (ctx->outputs)
{
ctx->indent++;
output_line(ctx, "%s_Output output;", ctx->mainfn);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "return output;");
pop_output(ctx);
} // if
pop_output(ctx);
if (ctx->inputs)
{
push_output(ctx, &ctx->inputs);
output_line(ctx, "};");
output_blank_line(ctx);
pop_output(ctx);
} // if
if (ctx->outputs)
{
push_output(ctx, &ctx->outputs);
output_line(ctx, "};");
output_blank_line(ctx);
pop_output(ctx);
} // if
// throw some blank lines around to make source more readable.
if (ctx->globals) // don't add a blank line if the section is empty.
{
push_output(ctx, &ctx->globals);
output_blank_line(ctx);
pop_output(ctx);
} // if
} // emit_METAL_finalize
void emit_METAL_global(Context *ctx, RegisterType regtype, int regnum)
{
char varname[64];
get_METAL_varname_in_buf(ctx, regtype, regnum, varname, sizeof (varname));
// These aren't actually global in metal, set them up at top of mainline.
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
switch (regtype)
{
case REG_TYPE_ADDRESS:
if (shader_is_vertex(ctx))
output_line(ctx, "int4 %s;", varname);
else if (shader_is_pixel(ctx)) // actually REG_TYPE_TEXTURE.
{
// We have to map texture registers to temps for ps_1_1, since
// they work like temps, initialize with tex coords, and the
// ps_1_1 TEX opcode expects to overwrite it.
if (!shader_version_atleast(ctx, 1, 4))
output_line(ctx, "float4 %s = input.%s;",varname,varname);
} // else if
break;
case REG_TYPE_PREDICATE:
output_line(ctx, "bool4 %s;", varname);
break;
case REG_TYPE_TEMP:
output_line(ctx, "float4 %s;", varname);
break;
case REG_TYPE_LOOP:
break; // no-op. We declare these in for loops at the moment.
case REG_TYPE_LABEL:
break; // no-op. If we see it here, it means we optimized it out.
default:
fail(ctx, "BUG: we used a register we don't know how to define.");
break;
} // switch
pop_output(ctx);
} // emit_METAL_global
void emit_METAL_array(Context *ctx, VariableList *var)
{
// All uniforms (except constant arrays, which are literally constant
// data embedded in Metal shaders) are now packed into a single array,
// so we can batch the uniform transfers. So this doesn't actually
// define an array here; the one, big array is emitted during
// finalization instead.
// However, we need to #define the offset into the one, big array here,
// and let dereferences use that #define.
const int base = var->index;
const int metalbase = ctx->uniform_float4_count;
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
output_line(ctx, "const int ARRAYBASE_%d = %d;", base, metalbase);
pop_output(ctx);
var->emit_position = metalbase;
} // emit_METAL_array
void emit_METAL_const_array(Context *ctx, const ConstantsList *clist,
int base, int size)
{
char varname[64];
get_METAL_const_array_varname_in_buf(ctx,base,size,varname,sizeof(varname));
const char *cstr = NULL;
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
output_line(ctx, "const float4 %s[%d] = {", varname, size);
ctx->indent++;
int i;
for (i = 0; i < size; i++)
{
while (clist->constant.type != MOJOSHADER_UNIFORM_FLOAT)
clist = clist->next;
assert(clist->constant.index == (base + i));
char val0[32];
char val1[32];
char val2[32];
char val3[32];
floatstr(ctx, val0, sizeof (val0), clist->constant.value.f[0], 1);
floatstr(ctx, val1, sizeof (val1), clist->constant.value.f[1], 1);
floatstr(ctx, val2, sizeof (val2), clist->constant.value.f[2], 1);
floatstr(ctx, val3, sizeof (val3), clist->constant.value.f[3], 1);
output_line(ctx, "float4(%s, %s, %s, %s)%s", val0, val1, val2, val3,
(i < (size-1)) ? "," : "");
clist = clist->next;
} // for
ctx->indent--;
output_line(ctx, "};");
output_line(ctx, "(void) %s[0];", varname); // stop compiler warnings.
pop_output(ctx);
} // emit_METAL_const_array
void emit_METAL_uniform(Context *ctx, RegisterType regtype, int regnum,
const VariableList *var)
{
// Now that we're pushing all the uniforms as one struct, pack these
// down, so if we only use register c439, it'll actually map to
// uniforms.uniforms_float4[0]. As we push one big struct, this will
// prevent uploading unused data.
const char *utype = get_METAL_uniform_type(ctx, regtype);
char varname[64];
char name[64];
int index = 0;
get_METAL_varname_in_buf(ctx, regtype, regnum, varname, sizeof (varname));
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
if (var == NULL)
{
get_METAL_uniform_array_varname(ctx, regtype, name, sizeof (name));
if (regtype == REG_TYPE_CONST)
index = ctx->uniform_float4_count;
else if (regtype == REG_TYPE_CONSTINT)
index = ctx->uniform_int4_count;
else if (regtype == REG_TYPE_CONSTBOOL)
index = ctx->uniform_bool_count;
else // get_METAL_uniform_array_varname() would have called fail().
assert(!(ctx->isfail));
// !!! FIXME: can cause unused var warnings in Clang...
//output_line(ctx, "constant %s &%s = %s[%d];", utype, varname, name, index);
output_line(ctx, "#define %s %s[%d]", varname, name, index);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", varname); // !!! FIXME: gross.
pop_output(ctx);
} // if
else
{
const int arraybase = var->index;
if (var->constant)
{
get_METAL_const_array_varname_in_buf(ctx, arraybase, var->count,
name, sizeof (name));
index = (regnum - arraybase);
} // if
else
{
assert(var->emit_position != -1);
get_METAL_uniform_array_varname(ctx, regtype, name, sizeof (name));
index = (regnum - arraybase) + var->emit_position;
} // else
// !!! FIXME: might trigger unused var warnings in Clang.
//output_line(ctx, "constant %s &%s = %s[%d];", utype, varname, name, index);
output_line(ctx, "#define %s %s[%d];", varname, name, index);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", varname); // !!! FIXME: gross.
pop_output(ctx);
} // else
pop_output(ctx);
} // emit_METAL_uniform
void emit_METAL_sampler(Context *ctx,int stage,TextureType ttype,int tb)
{
char var[64];
const char *texsuffix = NULL;
switch (ttype)
{
case TEXTURE_TYPE_2D: texsuffix = "2d"; break;
case TEXTURE_TYPE_CUBE: texsuffix = "cube"; break;
case TEXTURE_TYPE_VOLUME: texsuffix = "3d"; break;
default: assert(!"unexpected texture type"); return;
} // switch
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, stage, var, sizeof (var));
push_output(ctx, &ctx->mainline_arguments);
ctx->indent++;
output_line(ctx, "texture%s<float> %s_texture [[texture(%d)]],",
texsuffix, var, stage);
output_line(ctx, "sampler %s [[sampler(%d)]],", var, stage);
pop_output(ctx);
if (tb) // This sampler used a ps_1_1 TEXBEM opcode?
{
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
char name[64];
const int index = ctx->uniform_float4_count;
ctx->uniform_float4_count += 2;
get_METAL_uniform_array_varname(ctx, REG_TYPE_CONST, name, sizeof (name));
output_line(ctx, "constant float4 &%s_texbem = %s[%d];", var, name, index);
output_line(ctx, "constant float4 &%s_texbeml = %s[%d];", var, name, index+1);
pop_output(ctx);
} // if
} // emit_METAL_sampler
void emit_METAL_attribute(Context *ctx, RegisterType regtype, int regnum,
MOJOSHADER_usage usage, int index, int wmask,
int flags)
{
// !!! FIXME: this function doesn't deal with write masks at all yet!
const char *usage_str = NULL;
char index_str[16] = { '\0' };
char var[64];
get_METAL_varname_in_buf(ctx, regtype, regnum, var, sizeof (var));
//assert((flags & MOD_PP) == 0); // !!! FIXME: is PP allowed?
if (index != 0) // !!! FIXME: a lot of these MUST be zero.
snprintf(index_str, sizeof (index_str), "%u", (uint) index);
if (shader_is_vertex(ctx))
{
// pre-vs3 output registers.
// these don't ever happen in DCL opcodes, I think. Map to vs_3_*
// output registers.
if (!shader_version_atleast(ctx, 3, 0))
{
if (regtype == REG_TYPE_RASTOUT)
{
regtype = REG_TYPE_OUTPUT;
index = regnum;
switch ((const RastOutType) regnum)
{
case RASTOUT_TYPE_POSITION:
usage = MOJOSHADER_USAGE_POSITION;
break;
case RASTOUT_TYPE_FOG:
usage = MOJOSHADER_USAGE_FOG;
break;
case RASTOUT_TYPE_POINT_SIZE:
usage = MOJOSHADER_USAGE_POINTSIZE;
break;
} // switch
} // if
else if (regtype == REG_TYPE_ATTROUT)
{
regtype = REG_TYPE_OUTPUT;
usage = MOJOSHADER_USAGE_COLOR;
index = regnum;
} // else if
else if (regtype == REG_TYPE_TEXCRDOUT)
{
regtype = REG_TYPE_OUTPUT;
usage = MOJOSHADER_USAGE_TEXCOORD;
index = regnum;
} // else if
} // if
if (regtype == REG_TYPE_INPUT)
{
push_output(ctx, &ctx->inputs);
if (buffer_size(ctx->inputs) == 0)
{
output_line(ctx, "struct %s_Input", ctx->mainfn);
output_line(ctx, "{");
} // if
ctx->indent++;
output_line(ctx, "float4 %s [[attribute(%d)]];", var, regnum);
pop_output(ctx);
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
// !!! FIXME: might trigger unused var warnings in Clang.
//output_line(ctx, "constant float4 &%s = input.%s;", var, var);
output_line(ctx, "#define %s input.%s", var, var);
pop_output(ctx);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", var); // !!! FIXME: gross.
pop_output(ctx);
} // if
else if (regtype == REG_TYPE_OUTPUT)
{
push_output(ctx, &ctx->outputs);
if (buffer_size(ctx->outputs) == 0)
{
output_line(ctx, "struct %s_Output", ctx->mainfn);
output_line(ctx, "{");
} // if
ctx->indent++;
switch (usage)
{
case MOJOSHADER_USAGE_POSITION:
output_line(ctx, "float4 %s [[position]];", var);
break;
case MOJOSHADER_USAGE_POINTSIZE:
output_line(ctx, "float %s [[point_size]];", var);
break;
case MOJOSHADER_USAGE_COLOR:
output_line(ctx, "float4 %s [[user(color%d)]];", var, index);
break;
case MOJOSHADER_USAGE_FOG:
output_line(ctx, "float4 %s [[user(fog)]];", var);
break;
case MOJOSHADER_USAGE_TEXCOORD:
output_line(ctx, "float4 %s [[user(texcoord%d)]];", var, index);
break;
case MOJOSHADER_USAGE_NORMAL:
output_line(ctx, "float4 %s [[user(normal)]];", var);
default:
// !!! FIXME: we need to deal with some more built-in varyings here.
break;
} // switch
pop_output(ctx);
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
// !!! FIXME: this doesn't work.
//output_line(ctx, "float4 &%s = output.%s;", var, var);
output_line(ctx, "#define %s output.%s", var, var);
pop_output(ctx);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", var); // !!! FIXME: gross.
pop_output(ctx);
} // else if
else
{
fail(ctx, "unknown vertex shader attribute register");
} // else
} // if
else if (shader_is_pixel(ctx))
{
// samplers DCLs get handled in emit_METAL_sampler().
if (flags & MOD_CENTROID) // !!! FIXME
{
failf(ctx, "centroid unsupported in %s profile", ctx->profile->name);
return;
} // if
if ((regtype == REG_TYPE_COLOROUT) || (regtype == REG_TYPE_DEPTHOUT))
{
push_output(ctx, &ctx->outputs);
if (buffer_size(ctx->outputs) == 0)
{
output_line(ctx, "struct %s_Output", ctx->mainfn);
output_line(ctx, "{");
} // if
ctx->indent++;
if (regtype == REG_TYPE_COLOROUT)
output_line(ctx, "float4 %s [[color(%d)]];", var, regnum);
else if (regtype == REG_TYPE_DEPTHOUT)
output_line(ctx, "float %s [[depth(any)]];", var);
pop_output(ctx);
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
// !!! FIXME: this doesn't work.
//output_line(ctx, "float%s &%s = output.%s;", (regtype == REG_TYPE_DEPTHOUT) ? "" : "4", var, var);
output_line(ctx, "#define %s output.%s", var, var);
pop_output(ctx);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", var); // !!! FIXME: gross.
pop_output(ctx);
} // if
// !!! FIXME: can you actualy have a texture register with COLOR usage?
else if ((regtype == REG_TYPE_TEXTURE) ||
(regtype == REG_TYPE_INPUT) ||
(regtype == REG_TYPE_MISCTYPE))
{
int skipreference = 0;
push_output(ctx, &ctx->inputs);
if (buffer_size(ctx->inputs) == 0)
{
output_line(ctx, "struct %s_Input", ctx->mainfn);
output_line(ctx, "{");
} // if
ctx->indent++;
if (regtype == REG_TYPE_MISCTYPE)
{
const MiscTypeType mt = (MiscTypeType) regnum;
if (mt == MISCTYPE_TYPE_FACE)
output_line(ctx, "bool %s [[front_facing]];", var);
else if (mt == MISCTYPE_TYPE_POSITION)
output_line(ctx, "float4 %s [[position]];", var);
else
fail(ctx, "BUG: unhandled misc register");
} // else if
else
{
if (usage == MOJOSHADER_USAGE_TEXCOORD)
{
// ps_1_1 does a different hack for this attribute.
// Refer to emit_METAL_global()'s REG_TYPE_ADDRESS code.
if (!shader_version_atleast(ctx, 1, 4))
skipreference = 1;
output_line(ctx, "float4 %s [[user(texcoord%d)]];", var, index);
} // if
else if (usage == MOJOSHADER_USAGE_COLOR)
output_line(ctx, "float4 %s [[user(color%d)]];", var, index);
else if (usage == MOJOSHADER_USAGE_FOG)
output_line(ctx, "float4 %s [[user(fog)]];", var);
else if (usage == MOJOSHADER_USAGE_NORMAL)
output_line(ctx, "float4 %s [[user(normal)]];", var);
} // else
pop_output(ctx);
// !!! FIXME: can cause unused var warnings in Clang...
#if 0
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
if ((regtype == REG_TYPE_MISCTYPE)&&(regnum == MISCTYPE_TYPE_FACE))
output_line(ctx, "constant bool &%s = input.%s;", var, var);
else if (!skipreference)
output_line(ctx, "constant float4 &%s = input.%s;", var, var);
pop_output(ctx);
#endif
if (!skipreference)
{
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
output_line(ctx, "#define %s input.%s", var, var);
pop_output(ctx);
push_output(ctx, &ctx->mainline);
ctx->indent++;
output_line(ctx, "#undef %s", var); // !!! FIXME: gross.
pop_output(ctx);
} // if
} // else if
else
{
fail(ctx, "unknown pixel shader attribute register");
} // else
} // else if
else
{
fail(ctx, "Unknown shader type"); // state machine should catch this.
} // else
} // emit_METAL_attribute
void emit_METAL_NOP(Context *ctx)
{
// no-op is a no-op. :)
} // emit_METAL_NOP
void emit_METAL_MOV(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code), "%s", src0);
output_line(ctx, "%s", code);
} // emit_METAL_MOV
void emit_METAL_ADD(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code), "%s + %s", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_ADD
void emit_METAL_SUB(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code), "%s - %s", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_SUB
void emit_METAL_MAD(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char src2[64]; make_METAL_srcarg_string_masked(ctx, 2, src2, sizeof (src2));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code), "(%s * %s) + %s", src0, src1, src2);
output_line(ctx, "%s", code);
} // emit_METAL_MAD
void emit_METAL_MUL(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code), "%s * %s", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_MUL
void emit_METAL_RCP(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "(%s == 0.0) ? FLT_MAX : 1.0 / %s", src0, src0);
output_line(ctx, "%s", code);
} // emit_METAL_RCP
void emit_METAL_RSQ(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "(%s == 0.0) ? FLT_MAX : rsqrt(abs(%s))", src0, src0);
output_line(ctx, "%s", code);
} // emit_METAL_RSQ
void emit_METAL_dotprod(Context *ctx, const char *src0, const char *src1,
const char *extra)
{
const int vecsize = vecsize_from_writemask(ctx->dest_arg.writemask);
char castleft[16] = { '\0' };
const char *castright = "";
if (vecsize != 1)
{
snprintf(castleft, sizeof (castleft), "float%d(", vecsize);
castright = ")";
} // if
char code[128];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "%sdot(%s, %s)%s%s",
castleft, src0, src1, extra, castright);
output_line(ctx, "%s", code);
} // emit_METAL_dotprod
void emit_METAL_DP3(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_vec3(ctx, 1, src1, sizeof (src1));
emit_METAL_dotprod(ctx, src0, src1, "");
} // emit_METAL_DP3
void emit_METAL_DP4(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_full(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_full(ctx, 1, src1, sizeof (src1));
emit_METAL_dotprod(ctx, src0, src1, "");
} // emit_METAL_DP4
void emit_METAL_MIN(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "min(%s, %s)", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_MIN
void emit_METAL_MAX(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "max(%s, %s)", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_MAX
void emit_METAL_SLT(Context *ctx)
{
const int vecsize = vecsize_from_writemask(ctx->dest_arg.writemask);
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
// float(bool) or vec(bvec) results in 0.0 or 1.0, like SLT wants.
if (vecsize == 1)
make_METAL_destarg_assign(ctx, code, sizeof (code), "float(%s < %s)", src0, src1);
else
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float%d(%s < %s)", vecsize, src0, src1);
} // else
output_line(ctx, "%s", code);
} // emit_METAL_SLT
void emit_METAL_SGE(Context *ctx)
{
const int vecsize = vecsize_from_writemask(ctx->dest_arg.writemask);
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
// float(bool) or vec(bvec) results in 0.0 or 1.0, like SGE wants.
if (vecsize == 1)
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float(%s >= %s)", src0, src1);
} // if
else
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float%d(%s >= %s)", vecsize, src0, src1);
} // else
output_line(ctx, "%s", code);
} // emit_METAL_SGE
void emit_METAL_EXP(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "exp2(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_EXP
void emit_METAL_LOG(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "log2(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_LOG
void emit_METAL_LIT_helper(Context *ctx)
{
const char *maxp = "127.9961"; // value from the dx9 reference.
if (ctx->glsl_generated_lit_helper)
return;
ctx->glsl_generated_lit_helper = 1;
ctx->metal_need_header_common = 1;
ctx->metal_need_header_math = 1;
push_output(ctx, &ctx->helpers);
output_line(ctx, "float4 LIT(const float4 src)");
output_line(ctx, "{"); ctx->indent++;
output_line(ctx, "const float power = clamp(src.w, -%s, %s);",maxp,maxp);
output_line(ctx, "float4 retval = float4(1.0, 0.0, 0.0, 1.0);");
output_line(ctx, "if (src.x > 0.0) {"); ctx->indent++;
output_line(ctx, "retval.y = src.x;");
output_line(ctx, "if (src.y > 0.0) {"); ctx->indent++;
output_line(ctx, "retval.z = pow(src.y, power);"); ctx->indent--;
output_line(ctx, "}"); ctx->indent--;
output_line(ctx, "}");
output_line(ctx, "return retval;"); ctx->indent--;
output_line(ctx, "}");
output_blank_line(ctx);
pop_output(ctx);
} // emit_METAL_LIT_helper
void emit_METAL_LIT(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_full(ctx, 0, src0, sizeof (src0));
char code[128];
emit_METAL_LIT_helper(ctx);
make_METAL_destarg_assign(ctx, code, sizeof (code), "LIT(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_LIT
void emit_METAL_DST(Context *ctx)
{
// !!! FIXME: needs to take ctx->dst_arg.writemask into account.
char src0_y[64]; make_METAL_srcarg_string_y(ctx, 0, src0_y, sizeof (src0_y));
char src1_y[64]; make_METAL_srcarg_string_y(ctx, 1, src1_y, sizeof (src1_y));
char src0_z[64]; make_METAL_srcarg_string_z(ctx, 0, src0_z, sizeof (src0_z));
char src1_w[64]; make_METAL_srcarg_string_w(ctx, 1, src1_w, sizeof (src1_w));
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float4(1.0, %s * %s, %s, %s)",
src0_y, src1_y, src0_z, src1_w);
output_line(ctx, "%s", code);
} // emit_METAL_DST
void emit_METAL_LRP(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char src2[64]; make_METAL_srcarg_string_masked(ctx, 2, src2, sizeof (src2));
char code[128];
ctx->metal_need_header_common = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "mix(%s, %s, %s)",
src2, src1, src0);
output_line(ctx, "%s", code);
} // emit_METAL_LRP
void emit_METAL_FRC(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "fract(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_FRC
void emit_METAL_M4X4(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_full(ctx, 0, src0, sizeof (src0));
char row0[64]; make_METAL_srcarg_string_full(ctx, 1, row0, sizeof (row0));
char row1[64]; make_METAL_srcarg_string_full(ctx, 2, row1, sizeof (row1));
char row2[64]; make_METAL_srcarg_string_full(ctx, 3, row2, sizeof (row2));
char row3[64]; make_METAL_srcarg_string_full(ctx, 4, row3, sizeof (row3));
char code[256];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float4(dot(%s, %s), dot(%s, %s), dot(%s, %s), dot(%s, %s))",
src0, row0, src0, row1, src0, row2, src0, row3);
output_line(ctx, "%s", code);
} // emit_METAL_M4X4
void emit_METAL_M4X3(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_full(ctx, 0, src0, sizeof (src0));
char row0[64]; make_METAL_srcarg_string_full(ctx, 1, row0, sizeof (row0));
char row1[64]; make_METAL_srcarg_string_full(ctx, 2, row1, sizeof (row1));
char row2[64]; make_METAL_srcarg_string_full(ctx, 3, row2, sizeof (row2));
char code[256];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float3(dot(%s, %s), dot(%s, %s), dot(%s, %s))",
src0, row0, src0, row1, src0, row2);
output_line(ctx, "%s", code);
} // emit_METAL_M4X3
void emit_METAL_M3X4(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
char row0[64]; make_METAL_srcarg_string_vec3(ctx, 1, row0, sizeof (row0));
char row1[64]; make_METAL_srcarg_string_vec3(ctx, 2, row1, sizeof (row1));
char row2[64]; make_METAL_srcarg_string_vec3(ctx, 3, row2, sizeof (row2));
char row3[64]; make_METAL_srcarg_string_vec3(ctx, 4, row3, sizeof (row3));
char code[256];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float4(dot(%s, %s), dot(%s, %s), "
"dot(%s, %s), dot(%s, %s))",
src0, row0, src0, row1,
src0, row2, src0, row3);
output_line(ctx, "%s", code);
} // emit_METAL_M3X4
void emit_METAL_M3X3(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
char row0[64]; make_METAL_srcarg_string_vec3(ctx, 1, row0, sizeof (row0));
char row1[64]; make_METAL_srcarg_string_vec3(ctx, 2, row1, sizeof (row1));
char row2[64]; make_METAL_srcarg_string_vec3(ctx, 3, row2, sizeof (row2));
char code[256];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float3(dot(%s, %s), dot(%s, %s), dot(%s, %s))",
src0, row0, src0, row1, src0, row2);
output_line(ctx, "%s", code);
} // emit_METAL_M3X3
void emit_METAL_M3X2(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
char row0[64]; make_METAL_srcarg_string_vec3(ctx, 1, row0, sizeof (row0));
char row1[64]; make_METAL_srcarg_string_vec3(ctx, 2, row1, sizeof (row1));
char code[256];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float2(dot(%s, %s), dot(%s, %s))",
src0, row0, src0, row1);
output_line(ctx, "%s", code);
} // emit_METAL_M3X2
void emit_METAL_CALL(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
if (ctx->loops > 0)
output_line(ctx, "%s(aL);", src0);
else
output_line(ctx, "%s();", src0);
} // emit_METAL_CALL
void emit_METAL_CALLNZ(Context *ctx)
{
// !!! FIXME: if src1 is a constbool that's true, we can remove the
// !!! FIXME: if. If it's false, we can make this a no-op.
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
if (ctx->loops > 0)
output_line(ctx, "if (%s) { %s(aL); }", src1, src0);
else
output_line(ctx, "if (%s) { %s(); }", src1, src0);
} // emit_METAL_CALLNZ
void emit_METAL_LOOP(Context *ctx)
{
// !!! FIXME: swizzle?
char var[64]; get_METAL_srcarg_varname(ctx, 1, var, sizeof (var));
assert(ctx->source_args[0].regnum == 0); // in case they add aL1 someday.
output_line(ctx, "{");
ctx->indent++;
output_line(ctx, "const int aLend = %s.x + %s.y;", var, var);
output_line(ctx, "for (int aL = %s.y; aL < aLend; aL += %s.z) {", var, var);
ctx->indent++;
} // emit_METAL_LOOP
void emit_METAL_RET(Context *ctx)
{
// thankfully, the MSDN specs say a RET _has_ to end a function...no
// early returns. So if you hit one, you know you can safely close
// a high-level function.
push_output(ctx, &ctx->postflight);
output_line(ctx, "}");
output_blank_line(ctx);
set_output(ctx, &ctx->subroutines); // !!! FIXME: is this for LABEL? Maybe set it there so we don't allocate unnecessarily.
} // emit_METAL_RET
void emit_METAL_ENDLOOP(Context *ctx)
{
ctx->indent--;
output_line(ctx, "}");
ctx->indent--;
output_line(ctx, "}");
} // emit_METAL_ENDLOOP
void emit_METAL_LABEL(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
const int label = ctx->source_args[0].regnum;
RegisterList *reg = reglist_find(&ctx->used_registers, REG_TYPE_LABEL, label);
assert(ctx->output == ctx->subroutines); // not mainline, etc.
assert(ctx->indent == 0); // we shouldn't be in the middle of a function.
// MSDN specs say CALL* has to come before the LABEL, so we know if we
// can ditch the entire function here as unused.
if (reg == NULL)
set_output(ctx, &ctx->ignore); // Func not used. Parse, but don't output.
// !!! FIXME: it would be nice if we could determine if a function is
// !!! FIXME: only called once and, if so, forcibly inline it.
// !!! FIXME: this worked in GLSL because all our state is global to the shader,
// !!! FIXME: but in metal we kept it local to the shader mainline.
// !!! FIXME: Can we do C++11 lambdas in Metal to have nested functions? :)
const char *uses_loopreg = ((reg) && (reg->misc == 1)) ? "int aL" : "";
output_line(ctx, "void %s(%s)", src0, uses_loopreg);
output_line(ctx, "{");
ctx->indent++;
} // emit_METAL_LABEL
void emit_METAL_DCL(Context *ctx)
{
// no-op. We do this in our emit_attribute() and emit_uniform().
} // emit_METAL_DCL
void emit_METAL_POW(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"pow(abs(%s), %s)", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_POW
void emit_METAL_CRS(Context *ctx)
{
// !!! FIXME: needs to take ctx->dst_arg.writemask into account.
char src0[64]; make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_vec3(ctx, 1, src1, sizeof (src1));
char code[128];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code),
"cross(%s, %s)", src0, src1);
output_line(ctx, "%s", code);
} // emit_METAL_CRS
void emit_METAL_SGN(Context *ctx)
{
// (we don't need the temporary registers specified for the D3D opcode.)
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_common = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "sign(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_SGN
void emit_METAL_ABS(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "abs(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_ABS
void emit_METAL_NRM(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_geometric = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "normalize(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_NRM
void emit_METAL_SINCOS(Context *ctx)
{
// we don't care about the temp registers that <= sm2 demands; ignore them.
// sm2 also talks about what components are left untouched vs. undefined,
// but we just leave those all untouched with Metal write masks (which
// would fulfill the "undefined" requirement, too).
const int mask = ctx->dest_arg.writemask;
char src0[64]; make_METAL_srcarg_string_scalar(ctx, 0, src0, sizeof (src0));
char code[128] = { '\0' };
ctx->metal_need_header_math = 1;
if (writemask_x(mask))
make_METAL_destarg_assign(ctx, code, sizeof (code), "cos(%s)", src0);
else if (writemask_y(mask))
make_METAL_destarg_assign(ctx, code, sizeof (code), "sin(%s)", src0);
else if (writemask_xy(mask))
{
// !!! FIXME: can use sincos(), but need to assign cos to a temp, since it needs a reference.
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float2(cos(%s), sin(%s))", src0, src0);
} // else if
output_line(ctx, "%s", code);
} // emit_METAL_SINCOS
void emit_METAL_REP(Context *ctx)
{
// !!! FIXME:
// msdn docs say legal loop values are 0 to 255. We can check DEFI values
// at parse time, but if they are pulling a value from a uniform, do
// we clamp here?
// !!! FIXME: swizzle is legal here, right?
char src0[64]; make_METAL_srcarg_string_x(ctx, 0, src0, sizeof (src0));
const uint rep = (uint) ctx->reps;
output_line(ctx, "for (int rep%u = 0; rep%u < %s; rep%u++) {",
rep, rep, src0, rep);
ctx->indent++;
} // emit_METAL_REP
void emit_METAL_ENDREP(Context *ctx)
{
ctx->indent--;
output_line(ctx, "}");
} // emit_METAL_ENDREP
void emit_METAL_IF(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_scalar(ctx, 0, src0, sizeof (src0));
output_line(ctx, "if (%s) {", src0);
ctx->indent++;
} // emit_METAL_IF
void emit_METAL_IFC(Context *ctx)
{
const char *comp = get_METAL_comparison_string_scalar(ctx);
char src0[64]; make_METAL_srcarg_string_scalar(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_scalar(ctx, 1, src1, sizeof (src1));
output_line(ctx, "if (%s %s %s) {", src0, comp, src1);
ctx->indent++;
} // emit_METAL_IFC
void emit_METAL_ELSE(Context *ctx)
{
ctx->indent--;
output_line(ctx, "} else {");
ctx->indent++;
} // emit_METAL_ELSE
void emit_METAL_ENDIF(Context *ctx)
{
ctx->indent--;
output_line(ctx, "}");
} // emit_METAL_ENDIF
void emit_METAL_BREAK(Context *ctx)
{
output_line(ctx, "break;");
} // emit_METAL_BREAK
void emit_METAL_BREAKC(Context *ctx)
{
const char *comp = get_METAL_comparison_string_scalar(ctx);
char src0[64]; make_METAL_srcarg_string_scalar(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_scalar(ctx, 1, src1, sizeof (src1));
output_line(ctx, "if (%s %s %s) { break; }", src0, comp, src1);
} // emit_METAL_BREAKC
void emit_METAL_MOVA(Context *ctx)
{
const int vecsize = vecsize_from_writemask(ctx->dest_arg.writemask);
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_math = 1;
ctx->metal_need_header_common = 1;
if (vecsize == 1)
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"int(floor(abs(%s) + 0.5) * sign(%s))",
src0, src0);
} // if
else
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"int%d(floor(abs(%s) + float%d(0.5)) * sign(%s))",
vecsize, src0, vecsize, src0);
} // else
output_line(ctx, "%s", code);
} // emit_METAL_MOVA
void emit_METAL_DEFB(Context *ctx)
{
char varname[64]; get_METAL_destarg_varname(ctx, varname, sizeof (varname));
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
output_line(ctx, "const bool %s = %s;",
varname, ctx->dwords[0] ? "true" : "false");
pop_output(ctx);
} // emit_METAL_DEFB
void emit_METAL_DEFI(Context *ctx)
{
char varname[64]; get_METAL_destarg_varname(ctx, varname, sizeof (varname));
const int32 *x = (const int32 *) ctx->dwords;
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
output_line(ctx, "const int4 %s = int4(%d, %d, %d, %d);",
varname, (int) x[0], (int) x[1], (int) x[2], (int) x[3]);
pop_output(ctx);
} // emit_METAL_DEFI
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXCRD)
void emit_METAL_TEXKILL(Context *ctx)
{
char dst[64]; get_METAL_destarg_varname(ctx, dst, sizeof (dst));
ctx->metal_need_header_relational = 1;
ctx->metal_need_header_graphics = 1;
output_line(ctx, "if (any(%s.xyz < float3(0.0))) discard_fragment();", dst);
} // emit_METAL_TEXKILL
static void metal_texld(Context *ctx, const int texldd)
{
ctx->metal_need_header_texture = 1;
if (!shader_version_atleast(ctx, 1, 4))
{
DestArgInfo *info = &ctx->dest_arg;
char dst[64];
char sampler[64];
char code[128] = {0};
assert(!texldd);
RegisterList *sreg;
sreg = reglist_find(&ctx->samplers, REG_TYPE_SAMPLER, info->regnum);
const TextureType ttype = (TextureType) (sreg ? sreg->index : 0);
char swizzle[4] = { 'x', 'y', 'z', '\0' };
if (ttype == TEXTURE_TYPE_2D)
swizzle[2] = '\0'; // "xy" instead of "xyz".
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
make_METAL_destarg_assign(ctx, code, sizeof (code),
"%s_texture.sample(%s, %s.%s)",
sampler, sampler, dst, swizzle);
output_line(ctx, "%s", code);
} // if
else if (!shader_version_atleast(ctx, 2, 0))
{
// ps_1_4 is different, too!
fail(ctx, "TEXLD == Shader Model 1.4 unimplemented."); // !!! FIXME
return;
} // else if
else
{
const SourceArgInfo *samp_arg = &ctx->source_args[1];
RegisterList *sreg = reglist_find(&ctx->samplers, REG_TYPE_SAMPLER,
samp_arg->regnum);
const char *funcname = NULL;
char src0[64] = { '\0' };
char src1[64]; get_METAL_srcarg_varname(ctx, 1, src1, sizeof (src1)); // !!! FIXME: SRC_MOD?
char src2[64] = { '\0' };
char src3[64] = { '\0' };
if (sreg == NULL)
{
fail(ctx, "TEXLD using undeclared sampler");
return;
} // if
const char *grad = "";
if (texldd)
{
switch ((const TextureType) sreg->index)
{
case TEXTURE_TYPE_2D:
grad = "2d";
make_METAL_srcarg_string_vec2(ctx, 2, src2, sizeof (src2));
make_METAL_srcarg_string_vec2(ctx, 3, src3, sizeof (src3));
break;
case TEXTURE_TYPE_VOLUME:
grad = "3d";
make_METAL_srcarg_string_vec3(ctx, 2, src2, sizeof (src2));
make_METAL_srcarg_string_vec3(ctx, 3, src3, sizeof (src3));
break;
case TEXTURE_TYPE_CUBE:
grad = "cube";
make_METAL_srcarg_string_vec3(ctx, 2, src2, sizeof (src2));
make_METAL_srcarg_string_vec3(ctx, 3, src3, sizeof (src3));
break;
} // switch
} // if
// !!! FIXME: can TEXLDD set instruction_controls?
// !!! FIXME: does the d3d bias value map directly to Metal?
const char *biasleft = "";
const char *biasright = "";
char bias[64] = { '\0' };
if (ctx->instruction_controls == CONTROL_TEXLDB)
{
biasleft = ", bias(";
make_METAL_srcarg_string_w(ctx, 0, bias, sizeof (bias));
biasright = ")";
} // if
// Metal doesn't have a texture2DProj() function, but you just divide
// your texcoords by texcoords.w to achieve it anyhow, so DIY.
const char *projop = "";
char proj[64] = { '\0' };
if (ctx->instruction_controls == CONTROL_TEXLDP)
{
if (sreg->index == TEXTURE_TYPE_CUBE)
fail(ctx, "TEXLDP on a cubemap"); // !!! FIXME: is this legal?
projop = " / ";
make_METAL_srcarg_string_w(ctx, 0, proj, sizeof (proj));
} // if
switch ((const TextureType) sreg->index)
{
case TEXTURE_TYPE_2D:
make_METAL_srcarg_string_vec2(ctx, 0, src0, sizeof (src0));
break;
case TEXTURE_TYPE_CUBE:
case TEXTURE_TYPE_VOLUME:
make_METAL_srcarg_string_vec3(ctx, 0, src0, sizeof (src0));
break;
default:
fail(ctx, "unknown texture type");
return;
} // switch
assert(!isscalar(ctx, ctx->shader_type, samp_arg->regtype, samp_arg->regnum));
char swiz_str[6] = { '\0' };
make_METAL_swizzle_string(swiz_str, sizeof (swiz_str),
samp_arg->swizzle, ctx->dest_arg.writemask);
char code[128];
if (texldd)
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"%s_texture.sample(%s, %s, gradient%s(%s, %s))%s",
src1, src1, src0, grad, src2, src3, swiz_str);
} // if
else
{
make_METAL_destarg_assign(ctx, code, sizeof (code),
"%s_texture.sample(%s, %s%s%s%s%s%s)%s",
src1, src1, src0, projop, proj,
biasleft, bias, biasright, swiz_str);
} // else
output_line(ctx, "%s", code);
} // else
} // metal_texld
void emit_METAL_TEXLD(Context *ctx)
{
metal_texld(ctx, 0);
} // emit_METAL_TEXLD
void emit_METAL_TEXBEM(Context *ctx)
{
DestArgInfo *info = &ctx->dest_arg;
char dst[64]; get_METAL_destarg_varname(ctx, dst, sizeof (dst));
char src[64]; get_METAL_srcarg_varname(ctx, 0, src, sizeof (src));
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
make_METAL_destarg_assign(ctx, code, sizeof (code),
"%s_texture.sample(%s, float2(%s.x + (%s_texbem.x * %s.x) + (%s_texbem.z * %s.y),"
" %s.y + (%s_texbem.y * %s.x) + (%s_texbem.w * %s.y)))",
sampler, sampler,
dst, sampler, src, sampler, src,
dst, sampler, src, sampler, src);
output_line(ctx, "%s", code);
} // emit_METAL_TEXBEM
void emit_METAL_TEXBEML(Context *ctx)
{
// !!! FIXME: this code counts on the register not having swizzles, etc.
DestArgInfo *info = &ctx->dest_arg;
char dst[64]; get_METAL_destarg_varname(ctx, dst, sizeof (dst));
char src[64]; get_METAL_srcarg_varname(ctx, 0, src, sizeof (src));
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
make_METAL_destarg_assign(ctx, code, sizeof (code),
"(%s_texture.sample(%s, float2(%s.x + (%s_texbem.x * %s.x) + (%s_texbem.z * %s.y),"
" %s.y + (%s_texbem.y * %s.x) + (%s_texbem.w * %s.y)))) *"
" ((%s.z * %s_texbeml.x) + %s_texbem.y)",
sampler, sampler,
dst, sampler, src, sampler, src,
dst, sampler, src, sampler, src,
src, sampler, sampler);
output_line(ctx, "%s", code);
} // emit_METAL_TEXBEML
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXREG2AR) // !!! FIXME
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXREG2GB) // !!! FIXME
void emit_METAL_TEXM3X2PAD(Context *ctx)
{
// no-op ... work happens in emit_METAL_TEXM3X2TEX().
} // emit_METAL_TEXM3X2PAD
void emit_METAL_TEXM3X2TEX(Context *ctx)
{
if (ctx->texm3x2pad_src0 == -1)
return;
DestArgInfo *info = &ctx->dest_arg;
char dst[64];
char src0[64];
char src1[64];
char src2[64];
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
ctx->metal_need_header_geometric = 1;
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x2pad_src0,
src0, sizeof (src0));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x2pad_dst0,
src1, sizeof (src1));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[0].regnum,
src2, sizeof (src2));
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
make_METAL_destarg_assign(ctx, code, sizeof (code),
"%s_texture.sample(%s, float2(dot(%s.xyz, %s.xyz), dot(%s.xyz, %s.xyz)))",
sampler, sampler, src0, src1, src2, dst);
output_line(ctx, "%s", code);
} // emit_METAL_TEXM3X2TEX
void emit_METAL_TEXM3X3PAD(Context *ctx)
{
// no-op ... work happens in emit_METAL_TEXM3X3*().
} // emit_METAL_TEXM3X3PAD
void emit_METAL_TEXM3X3TEX(Context *ctx)
{
if (ctx->texm3x3pad_src1 == -1)
return;
DestArgInfo *info = &ctx->dest_arg;
char dst[64];
char src0[64];
char src1[64];
char src2[64];
char src3[64];
char src4[64];
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
ctx->metal_need_header_geometric = 1;
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst0,
src0, sizeof (src0));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src0,
src1, sizeof (src1));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst1,
src2, sizeof (src2));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src1,
src3, sizeof (src3));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[0].regnum,
src4, sizeof (src4));
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
RegisterList *sreg = reglist_find(&ctx->samplers, REG_TYPE_SAMPLER,
info->regnum);
const TextureType ttype = (TextureType) (sreg ? sreg->index : 0);
const char *ttypestr = (ttype == TEXTURE_TYPE_CUBE) ? "Cube" : "3D";
make_METAL_destarg_assign(ctx, code, sizeof (code),
"texture%s(%s,"
" float3(dot(%s.xyz, %s.xyz),"
" dot(%s.xyz, %s.xyz),"
" dot(%s.xyz, %s.xyz)))",
ttypestr, sampler, src0, src1, src2, src3, dst, src4);
output_line(ctx, "%s", code);
} // emit_METAL_TEXM3X3TEX
void emit_METAL_TEXM3X3SPEC_helper(Context *ctx)
{
if (ctx->glsl_generated_texm3x3spec_helper)
return;
ctx->glsl_generated_texm3x3spec_helper = 1;
push_output(ctx, &ctx->helpers);
output_line(ctx, "float3 TEXM3X3SPEC_reflection(const float3 normal, const float3 eyeray)");
output_line(ctx, "{"); ctx->indent++;
output_line(ctx, "return (2.0 * ((normal * eyeray) / (normal * normal)) * normal) - eyeray;"); ctx->indent--;
output_line(ctx, "}");
output_blank_line(ctx);
pop_output(ctx);
} // emit_METAL_TEXM3X3SPEC_helper
void emit_METAL_TEXM3X3SPEC(Context *ctx)
{
if (ctx->texm3x3pad_src1 == -1)
return;
DestArgInfo *info = &ctx->dest_arg;
char dst[64];
char src0[64];
char src1[64];
char src2[64];
char src3[64];
char src4[64];
char src5[64];
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
ctx->metal_need_header_geometric = 1;
emit_METAL_TEXM3X3SPEC_helper(ctx);
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst0,
src0, sizeof (src0));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src0,
src1, sizeof (src1));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst1,
src2, sizeof (src2));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src1,
src3, sizeof (src3));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[0].regnum,
src4, sizeof (src4));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[1].regnum,
src5, sizeof (src5));
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
RegisterList *sreg = reglist_find(&ctx->samplers, REG_TYPE_SAMPLER,
info->regnum);
const TextureType ttype = (TextureType) (sreg ? sreg->index : 0);
const char *ttypestr = (ttype == TEXTURE_TYPE_CUBE) ? "Cube" : "3D";
make_METAL_destarg_assign(ctx, code, sizeof (code),
"texture%s(%s, "
"TEXM3X3SPEC_reflection("
"float3("
"dot(%s.xyz, %s.xyz), "
"dot(%s.xyz, %s.xyz), "
"dot(%s.xyz, %s.xyz)"
"),"
"%s.xyz,"
")"
")",
ttypestr, sampler, src0, src1, src2, src3, dst, src4, src5);
output_line(ctx, "%s", code);
} // emit_METAL_TEXM3X3SPEC
void emit_METAL_TEXM3X3VSPEC(Context *ctx)
{
if (ctx->texm3x3pad_src1 == -1)
return;
DestArgInfo *info = &ctx->dest_arg;
char dst[64];
char src0[64];
char src1[64];
char src2[64];
char src3[64];
char src4[64];
char sampler[64];
char code[512];
ctx->metal_need_header_texture = 1;
ctx->metal_need_header_geometric = 1;
emit_METAL_TEXM3X3SPEC_helper(ctx);
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_SAMPLER, info->regnum,
sampler, sizeof (sampler));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst0,
src0, sizeof (src0));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src0,
src1, sizeof (src1));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst1,
src2, sizeof (src2));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src1,
src3, sizeof (src3));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[0].regnum,
src4, sizeof (src4));
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
RegisterList *sreg = reglist_find(&ctx->samplers, REG_TYPE_SAMPLER,
info->regnum);
const TextureType ttype = (TextureType) (sreg ? sreg->index : 0);
const char *ttypestr = (ttype == TEXTURE_TYPE_CUBE) ? "Cube" : "3D";
make_METAL_destarg_assign(ctx, code, sizeof (code),
"texture%s(%s, "
"TEXM3X3SPEC_reflection("
"float3("
"dot(%s.xyz, %s.xyz), "
"dot(%s.xyz, %s.xyz), "
"dot(%s.xyz, %s.xyz)"
"), "
"float3(%s.w, %s.w, %s.w)"
")"
")",
ttypestr, sampler, src0, src1, src2, src3, dst, src4, src0, src2, dst);
output_line(ctx, "%s", code);
} // emit_METAL_TEXM3X3VSPEC
void emit_METAL_EXPP(Context *ctx)
{
// !!! FIXME: msdn's asm docs don't list this opcode, I'll have to check the driver documentation.
emit_METAL_EXP(ctx); // I guess this is just partial precision EXP?
} // emit_METAL_EXPP
void emit_METAL_LOGP(Context *ctx)
{
// LOGP is just low-precision LOG, but we'll take the higher precision.
emit_METAL_LOG(ctx);
} // emit_METAL_LOGP
// common code between CMP and CND.
void emit_METAL_comparison_operations(Context *ctx, const char *cmp)
{
int i, j;
DestArgInfo *dst = &ctx->dest_arg;
const SourceArgInfo *srcarg0 = &ctx->source_args[0];
const int origmask = dst->writemask;
int used_swiz[4] = { 0, 0, 0, 0 };
const int writemask[4] = { dst->writemask0, dst->writemask1,
dst->writemask2, dst->writemask3 };
const int src0swiz[4] = { srcarg0->swizzle_x, srcarg0->swizzle_y,
srcarg0->swizzle_z, srcarg0->swizzle_w };
for (i = 0; i < 4; i++)
{
int mask = (1 << i);
if (!writemask[i]) continue;
if (used_swiz[i]) continue;
// This is a swizzle we haven't checked yet.
used_swiz[i] = 1;
// see if there are any other elements swizzled to match (.yyyy)
for (j = i + 1; j < 4; j++)
{
if (!writemask[j]) continue;
if (src0swiz[i] != src0swiz[j]) continue;
mask |= (1 << j);
used_swiz[j] = 1;
} // for
// okay, (mask) should be the writemask of swizzles we like.
//return make_METAL_srcarg_string(ctx, idx, (1 << 0));
char src0[64];
char src1[64];
char src2[64];
make_METAL_srcarg_string(ctx, 0, (1 << i), src0, sizeof (src0));
make_METAL_srcarg_string(ctx, 1, mask, src1, sizeof (src1));
make_METAL_srcarg_string(ctx, 2, mask, src2, sizeof (src2));
set_dstarg_writemask(dst, mask);
char code[128];
make_METAL_destarg_assign(ctx, code, sizeof (code),
"((%s %s) ? %s : %s)",
src0, cmp, src1, src2);
output_line(ctx, "%s", code);
} // for
set_dstarg_writemask(dst, origmask);
} // emit_METAL_comparison_operations
void emit_METAL_CND(Context *ctx)
{
emit_METAL_comparison_operations(ctx, "> 0.5");
} // emit_METAL_CND
void emit_METAL_DEF(Context *ctx)
{
const float *val = (const float *) ctx->dwords; // !!! FIXME: could be int?
char varname[64]; get_METAL_destarg_varname(ctx, varname, sizeof (varname));
char val0[32]; floatstr(ctx, val0, sizeof (val0), val[0], 1);
char val1[32]; floatstr(ctx, val1, sizeof (val1), val[1], 1);
char val2[32]; floatstr(ctx, val2, sizeof (val2), val[2], 1);
char val3[32]; floatstr(ctx, val3, sizeof (val3), val[3], 1);
push_output(ctx, &ctx->mainline_top);
ctx->indent++;
// The "(void) %s;" is to make the compiler not warn if this isn't used.
output_line(ctx, "const float4 %s = float4(%s, %s, %s, %s); (void) %s;",
varname, val0, val1, val2, val3, varname);
pop_output(ctx);
} // emit_METAL_DEF
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXREG2RGB) // !!! FIXME
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXDP3TEX) // !!! FIXME
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXM3X2DEPTH) // !!! FIXME
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXDP3) // !!! FIXME
void emit_METAL_TEXM3X3(Context *ctx)
{
if (ctx->texm3x3pad_src1 == -1)
return;
char dst[64];
char src0[64];
char src1[64];
char src2[64];
char src3[64];
char src4[64];
char code[512];
ctx->metal_need_header_geometric = 1;
// !!! FIXME: this code counts on the register not having swizzles, etc.
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst0,
src0, sizeof (src0));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src0,
src1, sizeof (src1));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_dst1,
src2, sizeof (src2));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->texm3x3pad_src1,
src3, sizeof (src3));
get_METAL_varname_in_buf(ctx, REG_TYPE_TEXTURE, ctx->source_args[0].regnum,
src4, sizeof (src4));
get_METAL_destarg_varname(ctx, dst, sizeof (dst));
make_METAL_destarg_assign(ctx, code, sizeof (code),
"float4(dot(%s.xyz, %s.xyz), dot(%s.xyz, %s.xyz), dot(%s.xyz, %s.xyz), 1.0)",
src0, src1, src2, src3, dst, src4);
output_line(ctx, "%s", code);
} // emit_METAL_TEXM3X3
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(TEXDEPTH) // !!! FIXME
void emit_METAL_CMP(Context *ctx)
{
emit_METAL_comparison_operations(ctx, ">= 0.0");
} // emit_METAL_CMP
EMIT_METAL_OPCODE_UNIMPLEMENTED_FUNC(BEM) // !!! FIXME
void emit_METAL_DP2ADD(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_vec2(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_vec2(ctx, 1, src1, sizeof (src1));
char src2[64]; make_METAL_srcarg_string_scalar(ctx, 2, src2, sizeof (src2));
char extra[64]; snprintf(extra, sizeof (extra), " + %s", src2);
emit_METAL_dotprod(ctx, src0, src1, extra);
} // emit_METAL_DP2ADD
void emit_METAL_DSX(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_graphics = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "dfdx(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_DSX
void emit_METAL_DSY(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char code[128];
ctx->metal_need_header_graphics = 1;
make_METAL_destarg_assign(ctx, code, sizeof (code), "dfdy(%s)", src0);
output_line(ctx, "%s", code);
} // emit_METAL_DSY
void emit_METAL_TEXLDD(Context *ctx)
{
metal_texld(ctx, 1);
} // emit_METAL_TEXLDD
void emit_METAL_SETP(Context *ctx)
{
const int vecsize = vecsize_from_writemask(ctx->dest_arg.writemask);
char src0[64]; make_METAL_srcarg_string_masked(ctx, 0, src0, sizeof (src0));
char src1[64]; make_METAL_srcarg_string_masked(ctx, 1, src1, sizeof (src1));
char code[128];
// destination is always predicate register (which is type bvec4).
const char *comp = (vecsize == 1) ?
get_METAL_comparison_string_scalar(ctx) :
get_METAL_comparison_string_vector(ctx);
make_METAL_destarg_assign(ctx, code, sizeof (code),
"(%s %s %s)", src0, comp, src1);
output_line(ctx, "%s", code);
} // emit_METAL_SETP
void emit_METAL_TEXLDL(Context *ctx)
{
// !!! FIXME: The spec says we can't use GLSL's texture*Lod() built-ins
// !!! FIXME: from fragment shaders for some inexplicable reason.
// !!! FIXME: Maybe Metal can do it, but I haven't looked into it yet.
emit_METAL_TEXLD(ctx);
} // emit_METAL_TEXLDL
void emit_METAL_BREAKP(Context *ctx)
{
char src0[64]; make_METAL_srcarg_string_scalar(ctx, 0, src0, sizeof (src0));
output_line(ctx, "if (%s) { break; }", src0);
} // emit_METAL_BREAKP
void emit_METAL_RESERVED(Context *ctx)
{
// do nothing; fails in the state machine.
} // emit_METAL_RESERVED
#endif // SUPPORT_PROFILE_METAL
#pragma GCC visibility pop