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DXBC: Fixed assembling extended instruction.

This commit is contained in:
Branimir Karadžić 2015-08-09 20:12:22 -07:00
parent 16bae53263
commit a87cc953cf
1 changed files with 64 additions and 0 deletions
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64
src/shader_dxbc.cpp
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@ -1191,6 +1191,7 @@ namespace bgfx
size += bx::read(_reader, extBits);
extended = 0 != (extBits & UINT32_C(0x80000000) );
_instruction.extended[ii] = DxbcInstruction::ExtendedType::Enum(extBits & UINT32_C(0x0000001f) );
_instruction.extended[ii+1] = DxbcInstruction::ExtendedType::Count;
switch (_instruction.extended[ii])
{
@ -1365,6 +1366,69 @@ namespace bgfx
uint32_t size =0;
size += bx::write(_writer, token);
;
for (uint32_t ii = 0; _instruction.extended[ii] != DxbcInstruction::ExtendedType::Count; ++ii)
{
// 0 1 2 3
// 76543210765432107654321076543210
// e..........................ttttt
// ^ ^
// | +----- type
// +-------------------------------- extended
token = _instruction.extended[ii+1] == DxbcInstruction::ExtendedType::Count
? 0
: UINT32_C(0x80000000)
;
token |= uint8_t(_instruction.extended[ii]);
switch (_instruction.extended[ii])
{
case DxbcInstruction::ExtendedType::SampleControls:
// 0 1 2 3
// 76543210765432107654321076543210
// . zzzzyyyyxxxx .....
// ^ ^ ^
// | | +------------- x
// | +----------------- y
// +--------------------- z
token |= (uint32_t(_instruction.sampleOffsets[0]) << 9) & UINT32_C(0x00001e00);
token |= (uint32_t(_instruction.sampleOffsets[1]) << 13) & UINT32_C(0x0001e000);
token |= (uint32_t(_instruction.sampleOffsets[2]) << 17) & UINT32_C(0x001e0000);
break;
case DxbcInstruction::ExtendedType::ResourceDim:
// 0 1 2 3
// 76543210765432107654321076543210
// . .....
//
token |= (uint32_t(_instruction.resourceTarget << 6) & UINT32_C(0x000003e0) );
token |= (uint32_t(_instruction.resourceStride << 11) & UINT32_C(0x0000f800) );
break;
case DxbcInstruction::ExtendedType::ResourceReturnType:
// 0 1 2 3
// 76543210765432107654321076543210
// . 3333222211110000.....
// ^ ^ ^
// | | +------------- x
// | +----------------- y
// +--------------------- z
token |= (uint32_t(_instruction.resourceReturnTypes[0]) << 6) & UINT32_C(0x000001e0);
token |= (uint32_t(_instruction.resourceReturnTypes[1]) << 9) & UINT32_C(0x00001e00);
token |= (uint32_t(_instruction.resourceReturnTypes[2]) << 13) & UINT32_C(0x0001e000);
token |= (uint32_t(_instruction.resourceReturnTypes[3]) << 17) & UINT32_C(0x001e0000);
break;
default:
break;
}
size += bx::write(_writer, token);
}
for (uint32_t ii = 0; ii < _instruction.numOperands; ++ii)
{