RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 11:17:35 +00:00
Code Issues Activity Actions

LibGL+LibSoftGPU: Implement the stencil buffer

Browse source 
This implements an 8-bit front stencil buffer. Stencil operations are
SIMD optimized. LibGL changes include:

* New `glStencilMask` and `glStencilMaskSeparate` functions
* New context parameter `GL_STENCIL_CLEAR_VALUE`
This commit is contained in:
Jelle Raaijmakers 2022-01-16 22:48:46 +01:00 • committed by Andreas Kling
parent 6386671944
commit 11c807ebd1
13 changed files with 430 additions and 77 deletions
Download patch file Download diff file Expand all files Collapse all files

22
Userland/Libraries/LibSoftGPU/Device.h
View file

@ -10,6 +10,7 @@
#include <AK/Array.h>
#include <AK/NonnullRefPtr.h>
#include <AK/OwnPtr.h>
#include <AK/Vector.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Matrix3x3.h>
#include <LibGfx/Matrix4x4.h>
@ -26,6 +27,7 @@
#include <LibSoftGPU/Light/Light.h>
#include <LibSoftGPU/Light/Material.h>
#include <LibSoftGPU/Sampler.h>
#include <LibSoftGPU/StencilBuffer.h>
#include <LibSoftGPU/Triangle.h>
#include <LibSoftGPU/Vertex.h>
@ -38,6 +40,7 @@ struct TexCoordGenerationConfig {
struct RasterizerOptions {
bool shade_smooth { true };
bool enable_stencil_test { false };
bool enable_depth_test { false };
bool enable_depth_write { true };
bool enable_alpha_test { false };
@ -94,6 +97,17 @@ struct RasterPosition {
FloatVector4 texture_coordinates { 0.0f, 0.0f, 0.0f, 1.0f };
};
struct StencilConfiguration {
StencilTestFunction test_function;
u8 reference_value;
u8 test_mask;
StencilOperation on_stencil_test_fail;
StencilOperation on_depth_test_fail;
StencilOperation on_pass;
u8 write_mask;
};
class Device final {
public:
Device(const Gfx::IntSize& min_size);
@ -104,6 +118,7 @@ public:
void resize(const Gfx::IntSize& min_size);
void clear_color(const FloatVector4&);
void clear_depth(float);
void clear_stencil(u8);
void blit_to(Gfx::Bitmap&);
void blit_to_color_buffer_at_raster_position(Gfx::Bitmap const&);
void blit_to_depth_buffer_at_raster_position(Vector<float> const&, size_t, size_t);
@ -120,6 +135,7 @@ public:
void set_sampler_config(unsigned, SamplerConfig const&);
void set_light_state(unsigned, Light const&);
void set_material_state(Face, Material const&);
void set_stencil_configuration(Face, StencilConfiguration const&);
RasterPosition raster_position() const { return m_raster_position; }
void set_raster_position(RasterPosition const& raster_position);
@ -128,15 +144,16 @@ public:
private:
void draw_statistics_overlay(Gfx::Bitmap&);
Gfx::IntRect raster_rect_in_target_coordinates(Gfx::IntSize size);
Gfx::IntRect window_coordinates_to_target_coordinates(Gfx::IntRect const&);
void rasterize_triangle(const Triangle& triangle);
void setup_blend_factors();
void shade_fragments(PixelQuad&);
bool test_alpha(PixelQuad&);
private:
RefPtr<Gfx::Bitmap> m_render_target;
OwnPtr<DepthBuffer> m_depth_buffer;
NonnullOwnPtr<DepthBuffer> m_depth_buffer;
NonnullOwnPtr<StencilBuffer> m_stencil_buffer;
RasterizerOptions m_options;
LightModelParameters m_lighting_model;
Clipper m_clipper;
@ -149,6 +166,7 @@ private:
Array<Light, NUM_LIGHTS> m_lights;
Array<Material, 2u> m_materials;
RasterPosition m_raster_position;
Array<StencilConfiguration, 2u> m_stencil_configuration;
};
}