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Merge pull request #2091 from LDeakin/shader-clock

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GLSL: Support OpReadClockKHR
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Hans-Kristian Arntzen 2023-01-26 15:41:40 +01:00 committed by GitHub
commit f575b89436
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3 changed files with 79 additions and 0 deletions
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19
reference/shaders/frag/shader-clock.frag Normal file
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@ -0,0 +1,19 @@
#version 450
#if defined(GL_ARB_gpu_shader_int64)
#extension GL_ARB_gpu_shader_int64 : require
#elif defined(GL_NV_gpu_shader5)
#extension GL_NV_gpu_shader5 : require
#else
#error No extension available for 64-bit integers.
#endif
#extension GL_EXT_shader_realtime_clock : require
#extension GL_ARB_shader_clock : require
void main()
{
uvec2 a = clockRealtime2x32EXT();
uint64_t b = clockRealtimeEXT();
uvec2 c = clock2x32ARB();
uint64_t d = clockARB();
}

17
shaders/frag/shader-clock.frag Normal file
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#version 450
#extension GL_EXT_shader_realtime_clock : enable
#extension GL_EXT_shader_explicit_arithmetic_types_int64 : enable
#extension GL_ARB_shader_clock : enable
#extension GL_ARB_gpu_shader_int64 : enable
void main() {
// GL_EXT_shader_explicit_arithmetic_types_int64
uvec2 a = clockRealtime2x32EXT();
uint64_t b = clockRealtimeEXT();
// GL_ARB_shader_clock
uvec2 c = clock2x32ARB();
uint64_t d = clockARB();
}

43
spirv_glsl.cpp
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@ -13904,6 +13904,49 @@ void CompilerGLSL::emit_instruction(const Instruction &instruction)
statement("SetMeshOutputsEXT(", to_unpacked_expression(ops[0]), ", ", to_unpacked_expression(ops[1]), ");");
break;
case OpReadClockKHR:
{
auto &type = get<SPIRType>(ops[0]);
Scope scope = static_cast<Scope>(get<SPIRConstant>(ops[2]).m.c[0].r[0].u32);
if (scope == ScopeDevice)
{
require_extension_internal("GL_EXT_shader_realtime_clock");
if (type.basetype == SPIRType::BaseType::UInt64)
{
emit_op(ops[0], ops[1], "clockRealtimeEXT()", true);
}
else if (type.basetype == SPIRType::BaseType::UInt && type.vecsize == 2)
{
emit_op(ops[0], ops[1], "clockRealtime2x32EXT()", true);
}
else
{
SPIRV_CROSS_THROW("Unsupported result type for OpReadClockKHR opcode.");
}
}
else if (scope == ScopeSubgroup)
{
require_extension_internal("GL_ARB_shader_clock");
if (type.basetype == SPIRType::BaseType::UInt64)
{
emit_op(ops[0], ops[1], "clockARB()", true);
}
else if (type.basetype == SPIRType::BaseType::UInt && type.vecsize == 2)
{
emit_op(ops[0], ops[1], "clock2x32ARB()", true);
}
else
{
SPIRV_CROSS_THROW("Unsupported result type for OpReadClockKHR opcode.");
}
}
else
{
SPIRV_CROSS_THROW("Unsupported scope for OpReadClockKHR opcode.");
}
break;
}
default:
statement("// unimplemented op ", instruction.op);
break;