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[SPIR-V] Scalar addition and multiplication

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This commit is contained in:
Triang3l
2020-11-01 20:42:59 +03:00
parent fd4ba5622a
commit 06b47d1df0
3 changed files with 329 additions and 60 deletions
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22
src/xenia/gpu/spirv_shader_translator.h
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@@ -143,18 +143,38 @@ class SpirvShaderTranslator : public ShaderTranslator {
components),
original_operand, invert_negate, force_absolute);
}
// If components are identical, the same Id will be written to both outputs.
void GetOperandScalarXY(spv::Id operand_storage,
const InstructionOperand& original_operand,
spv::Id& a_out, spv::Id& b_out,
bool invert_negate = false,
bool force_absolute = false);
// Gets the absolute value of the loaded operand if it's not absolute already.
spv::Id GetAbsoluteOperand(spv::Id operand_storage,
const InstructionOperand& original_operand);
// The type of the value must be a float vector consisting of
// xe::bit_count(result.GetUsedResultComponents()) elements, or (to replicate
// a scalar into all used components) float, or the value can be spv::NoResult
// if there's no result to store (like constants only).
void StoreResult(const InstructionResult& result, spv::Id value);
// For Shader Model 3 multiplication (+-0 or denormal * anything = +0),
// replaces the value with +0 if the minimum of the two operands is 0. This
// must be called with absolute values of operands - use GetAbsoluteOperand!
spv::Id ZeroIfAnyOperandIsZero(spv::Id value, spv::Id operand_0_abs,
spv::Id operand_1_abs);
// Return type is a xe::bit_count(result.GetUsedResultComponents())-component
// float vector or a single float, depending on whether it's a reduction
// instruction (check getTypeId of the result), or returns spv::NoResult if
// nothing to store.
spv::Id ProcessVectorAluOperation(const ParsedAluInstruction& instr,
bool& predicate_written);
// Returns a float value to write to the previous scalar register and to the
// destination. If the return value is ps itself (in the retain_prev case),
// returns spv::NoResult (handled as a special case, so if it's retain_prev,
// but don't need to write to anywhere, no OpLoad(ps) will be done).
spv::Id ProcessScalarAluOperation(const ParsedAluInstruction& instr,
bool& predicate_written);
Features features_;
@@ -249,6 +269,8 @@ class SpirvShaderTranslator : public ShaderTranslator {
spv::Id var_main_address_relative_;
// int.
spv::Id var_main_address_absolute_;
// float.
spv::Id var_main_previous_scalar_;
// float4[register_count()].
spv::Id var_main_registers_;
// VS only - float3 (special exports).