a8fc4be47a
This adds glClearDepth() and new caps for enabling and disabling the depth buffer with glEnable() and glDisable()
87 lines
3 KiB
C++
87 lines
3 KiB
C++
/*
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* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@gmx.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "Clipper.h"
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#include "GLContext.h"
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#include "GLStruct.h"
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#include "SoftwareRasterizer.h"
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Matrix4x4.h>
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#include <LibGfx/Vector3.h>
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namespace GL {
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class SoftwareGLContext : public GLContext {
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public:
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SoftwareGLContext(Gfx::Bitmap&);
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virtual void gl_begin(GLenum mode) override;
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virtual void gl_clear(GLbitfield mask) override;
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virtual void gl_clear_color(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) override;
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virtual void gl_clear_depth(GLdouble depth) override;
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virtual void gl_color(GLdouble r, GLdouble g, GLdouble b, GLdouble a) override;
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virtual void gl_end() override;
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virtual void gl_frustum(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val) override;
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virtual GLenum gl_get_error() override;
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virtual GLubyte* gl_get_string(GLenum name) override;
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virtual void gl_load_identity() override;
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virtual void gl_load_matrix(const FloatMatrix4x4& matrix) override;
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virtual void gl_matrix_mode(GLenum mode) override;
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virtual void gl_ortho(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val) override;
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virtual void gl_push_matrix() override;
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virtual void gl_pop_matrix() override;
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virtual void gl_rotate(GLdouble angle, GLdouble x, GLdouble y, GLdouble z) override;
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virtual void gl_scale(GLdouble x, GLdouble y, GLdouble z) override;
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virtual void gl_translate(GLdouble x, GLdouble y, GLdouble z) override;
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virtual void gl_vertex(GLdouble x, GLdouble y, GLdouble z, GLdouble w) override;
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virtual void gl_viewport(GLint x, GLint y, GLsizei width, GLsizei height) override;
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virtual void gl_enable(GLenum) override;
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virtual void gl_disable(GLenum) override;
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virtual void gl_front_face(GLenum) override;
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virtual void gl_cull_face(GLenum) override;
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virtual void present() override;
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private:
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GLenum m_current_draw_mode;
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GLenum m_current_matrix_mode;
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FloatMatrix4x4 m_projection_matrix;
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FloatMatrix4x4 m_model_view_matrix;
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FloatMatrix4x4 m_current_matrix;
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Vector<FloatMatrix4x4> m_projection_matrix_stack;
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Vector<FloatMatrix4x4> m_model_view_matrix_stack;
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FloatVector4 m_clear_color = { 0.0f, 0.0f, 0.0f, 0.0f };
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double m_clear_depth = { 1.0 };
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FloatVector4 m_current_vertex_color = { 1.0f, 1.0f, 1.0f, 1.0f };
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Vector<GLVertex, 96> vertex_list;
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Vector<GLTriangle, 32> triangle_list;
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Vector<GLTriangle, 32> processed_triangles;
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GLenum m_error = GL_NO_ERROR;
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bool m_in_draw_state = false;
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bool m_depth_test_enabled = false;
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bool m_cull_faces = false;
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GLenum m_front_face = GL_CCW;
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GLenum m_culled_sides = GL_BACK;
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NonnullRefPtr<Gfx::Bitmap> m_frontbuffer;
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Clipper m_clipper;
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SoftwareRasterizer m_rasterizer;
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};
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}
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