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LibSoftGPU: Implement shader processor for SoftGPU ISA

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This adds a shader processor that executes our ISA when a fragment
shader is currently bound to the device.
This commit is contained in:
Stephan Unverwerth 2022-09-17 17:52:34 +02:00 • committed by Andrew Kaster
parent 1e548a84d6
commit b18bf702ea
5 changed files with 170 additions and 0 deletions
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46
Userland/Libraries/LibSoftGPU/ShaderProcessor.h Normal file
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/*
* Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Array.h>
#include <AK/SIMD.h>
#include <AK/Vector.h>
#include <LibGPU/Config.h>
#include <LibSoftGPU/PixelQuad.h>
#include <LibSoftGPU/Sampler.h>
namespace SoftGPU {
class Shader;
class ShaderProcessor final {
public:
ShaderProcessor(Array<Sampler, GPU::NUM_TEXTURE_UNITS>& samplers)
: m_samplers { samplers }
{
}
void execute(PixelQuad&, Shader const&);
ALWAYS_INLINE AK::SIMD::f32x4 get_register(u16 index) const { return m_registers[index]; }
ALWAYS_INLINE void set_register(u16 index, AK::SIMD::f32x4 value) { m_registers[index] = value; }
private:
void op_input(PixelQuad const&, Instruction::Arguments);
void op_output(PixelQuad&, Instruction::Arguments);
void op_sample2d(Instruction::Arguments);
void op_swizzle(Instruction::Arguments);
void op_add(Instruction::Arguments);
void op_sub(Instruction::Arguments);
void op_mul(Instruction::Arguments);
void op_div(Instruction::Arguments);
Array<Sampler, GPU::NUM_TEXTURE_UNITS>& m_samplers;
AK::SIMD::f32x4 m_registers[1024];
};
}