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[spirv] Track instruction offset in instruction iterator

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This commit is contained in:
Philip Rebohle 2018-04-10 12:48:24 +02:00
parent 1fb22a6022
commit 5d1642af1f
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GPG Key ID: C8CC613427A31C99
2 changed files with 44 additions and 29 deletions
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10
src/spirv/spirv_code_buffer.h
View File

@ -34,9 +34,8 @@ namespace dxvk {
* \brief Code data
* \returns Code data
*/
const uint32_t* data() const {
return m_code.data();
}
const uint32_t* data() const { return m_code.data(); }
uint32_t* data() { return m_code.data(); }
/**
* \brief Code size, in bytes
@ -54,7 +53,8 @@ namespace dxvk {
* \returns Instruction iterator
*/
SpirvInstructionIterator begin() {
return SpirvInstructionIterator(m_code.data(), m_code.size());
return SpirvInstructionIterator(
m_code.data(), 0, m_code.size());
}
/**
@ -64,7 +64,7 @@ namespace dxvk {
* \returns Instruction iterator
*/
SpirvInstructionIterator end() {
return SpirvInstructionIterator(nullptr, 0);
return SpirvInstructionIterator(nullptr, 0, 0);
}
/**

53
src/spirv/spirv_instruction.h
View File

@ -19,8 +19,8 @@ namespace dxvk {
public:
SpirvInstruction() { }
SpirvInstruction(uint32_t* code, uint32_t size)
: m_code(code), m_size(size) { }
SpirvInstruction(uint32_t* code, uint32_t offset, uint32_t length)
: m_code(code), m_offset(offset), m_length(length) { }
/**
* \brief SPIR-V Op code
@ -39,6 +39,14 @@ namespace dxvk {
return this->arg(0) >> spv::WordCountShift;
}
/**
* \brief Instruction offset
* \returns Offset in DWORDs
*/
uint32_t offset() const {
return m_offset;
}
/**
* \brief Argument value
*
@ -50,7 +58,8 @@ namespace dxvk {
* \returns The argument value
*/
uint32_t arg(uint32_t id) const {
return id < m_size ? m_code[id] : 0;
const uint32_t index = m_offset + id;
return index < m_length ? m_code[index] : 0;
}
/**
@ -60,20 +69,21 @@ namespace dxvk {
* \param [in] word New argument word
*/
void setArg(uint32_t id, uint32_t word) const {
if (id < m_size)
m_code[id] = word;
if (m_offset + id < m_length)
m_code[m_offset + id] = word;
}
private:
uint32_t* m_code = nullptr;
uint32_t m_size = 0;
uint32_t m_offset = 0;
uint32_t m_length = 0;
};
/**
* \brief SPIR-V instruction
* \brief SPIR-V instruction iterator
*
* Convenient iterator that can be used
* to process raw SPIR-V shader code.
@ -83,43 +93,48 @@ namespace dxvk {
public:
SpirvInstructionIterator() { }
SpirvInstructionIterator(uint32_t* code, uint32_t size)
: m_code(size != 0 ? code : nullptr), m_size(size) {
if ((size >= 5) && (m_code[0] == spv::MagicNumber))
SpirvInstructionIterator(uint32_t* code, uint32_t offset, uint32_t length)
: m_code (length != 0 ? code : nullptr),
m_offset(length != 0 ? offset : 0),
m_length(length) {
if ((length >= 5) && (m_code[0] == spv::MagicNumber))
this->advance(5);
}
SpirvInstructionIterator& operator ++ () {
this->advance(SpirvInstruction(m_code, m_size).length());
this->advance(SpirvInstruction(m_code, m_offset, m_length).length());
return *this;
}
SpirvInstruction operator * () const {
return SpirvInstruction(m_code, m_size);
return SpirvInstruction(m_code, m_offset, m_length);
}
bool operator == (const SpirvInstructionIterator& other) const {
return this->m_code == other.m_code
&& this->m_size == other.m_size;
&& this->m_offset == other.m_offset
&& this->m_length == other.m_length;
}
bool operator != (const SpirvInstructionIterator& other) const {
return this->m_code != other.m_code
&& this->m_size != other.m_size;
|| this->m_offset != other.m_offset
|| this->m_length != other.m_length;
}
private:
uint32_t* m_code = nullptr;
uint32_t m_size = 0;
uint32_t m_offset = 0;
uint32_t m_length = 0;
void advance(uint32_t n) {
if (n < m_size) {
m_code += n;
m_size -= n;
if (m_offset + n < m_length) {
m_offset += n;
} else {
m_code = nullptr;
m_size = 0;
m_offset = 0;
m_length = 0;
}
}