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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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6
Userland/Libraries/LibSoftGPU/Device.cpp
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@ -829,6 +829,7 @@ void Device::rasterize_triangle(Triangle& triangle)
Device::Device(Gfx::IntSize size)
: m_frame_buffer(FrameBuffer<GPU::ColorType, GPU::DepthType, GPU::StencilType>::try_create(size).release_value_but_fixme_should_propagate_errors())
, m_shader_processor(m_samplers)
{
m_options.scissor_box = m_frame_buffer->rect();
m_options.viewport = m_frame_buffer->rect();
@ -1211,6 +1212,11 @@ void Device::draw_primitives(GPU::PrimitiveType primitive_type, FloatMatrix4x4 c
ALWAYS_INLINE void Device::shade_fragments(PixelQuad& quad)
{
if (m_current_fragment_shader) {
m_shader_processor.execute(quad, *m_current_fragment_shader);
return;
}
Array<Vector4<f32x4>, GPU::NUM_TEXTURE_UNITS> texture_stage_texel;
auto current_color = quad.get_input_vector4(SHADER_INPUT_VERTEX_COLOR);