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LibGL+Lib*GPU: Set model view and projection matrices separately

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LibSoftGPU used to calculate the normal transformation based on the
model view transformation for every primitive, because that's when we
sent over the matrix. By making LibGL a bit smarter and only update the
matrices when they could have changed, we only need to calculate the
normal transformation once on every matrix update.

When viewing `Tuba.obj` in 3DFileViewer, this brings the percentage of
time spent in `FloatMatrix4x4::inverse()` down from 15% to 0%. :^)
This commit is contained in:
Jelle Raaijmakers 2023-10-05 22:01:35 +02:00
parent 126adfc392
commit edcb6176ce
8 changed files with 75 additions and 24 deletions
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10
Userland/Libraries/LibSoftGPU/Device.h
View file

@ -26,6 +26,7 @@
#include <LibGPU/TextureUnitConfiguration.h>
#include <LibGPU/Vertex.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Matrix3x3.h>
#include <LibGfx/Matrix4x4.h>
#include <LibGfx/Rect.h>
#include <LibGfx/Vector4.h>
@ -48,7 +49,7 @@ public:
virtual GPU::DeviceInfo info() const override;
virtual void draw_primitives(GPU::PrimitiveType, FloatMatrix4x4 const& model_view_transform, FloatMatrix4x4 const& projection_transform, Vector<GPU::Vertex>& vertices) override;
virtual void draw_primitives(GPU::PrimitiveType, Vector<GPU::Vertex>& vertices) override;
virtual void resize(Gfx::IntSize min_size) override;
virtual void clear_color(FloatVector4 const&) override;
virtual void clear_depth(GPU::DepthType) override;
@ -68,6 +69,8 @@ public:
virtual NonnullRefPtr<GPU::Image> create_image(GPU::PixelFormat const&, u32 width, u32 height, u32 depth, u32 max_levels) override;
virtual ErrorOr<NonnullRefPtr<GPU::Shader>> create_shader(GPU::IR::Shader const&) override;
virtual void set_model_view_transform(FloatMatrix4x4 const&) override;
virtual void set_projection_transform(FloatMatrix4x4 const&) override;
virtual void set_sampler_config(unsigned, GPU::SamplerConfig const&) override;
virtual void set_light_state(unsigned, GPU::Light const&) override;
virtual void set_material_state(GPU::Face, GPU::Material const&) override;
@ -77,7 +80,7 @@ public:
virtual GPU::RasterPosition raster_position() const override { return m_raster_position; }
virtual void set_raster_position(GPU::RasterPosition const& raster_position) override;
virtual void set_raster_position(FloatVector4 const& position, FloatMatrix4x4 const& model_view_transform, FloatMatrix4x4 const& projection_transform) override;
virtual void set_raster_position(FloatVector4 const& position) override;
virtual void bind_fragment_shader(RefPtr<GPU::Shader>) override;
@ -105,6 +108,9 @@ private:
RefPtr<FrameBuffer<GPU::ColorType, GPU::DepthType, GPU::StencilType>> m_frame_buffer {};
GPU::RasterizerOptions m_options;
FloatMatrix4x4 m_model_view_transform;
FloatMatrix3x3 m_normal_transform;
FloatMatrix4x4 m_projection_transform;
GPU::LightModelParameters m_lighting_model;
Clipper m_clipper;
Vector<Triangle> m_triangle_list;