96 lines
3.2 KiB
C++
Executable File
96 lines
3.2 KiB
C++
Executable File
// ----------------------------------------------------------------------------
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// - Open3D: www.open3d.org -
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// ----------------------------------------------------------------------------
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// Copyright (c) 2018-2023 www.open3d.org
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// SPDX-License-Identifier: MIT
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// ----------------------------------------------------------------------------
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#pragma once
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#include <GL/glew.h>
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#include "open3d/geometry/Geometry.h"
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#include "open3d/visualization/visualizer/RenderOption.h"
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#include "open3d/visualization/visualizer/ViewControl.h"
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namespace open3d {
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namespace visualization {
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namespace glsl {
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class ShaderWrapper {
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public:
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virtual ~ShaderWrapper() {}
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ShaderWrapper(const ShaderWrapper &) = delete;
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ShaderWrapper &operator=(const ShaderWrapper &) = delete;
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protected:
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ShaderWrapper(const std::string &name) : shader_name_(name) {}
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public:
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/// Function to render geometry under condition of mode and view
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/// The geometry is updated in a passive manner (bind only when needed).
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/// Thus this function compiles shaders if not yet, binds geometry if not
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/// yet, then do the rendering.
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bool Render(const geometry::Geometry &geometry,
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const RenderOption &option,
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const ViewControl &view);
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/// Function to invalidate the geometry (set the dirty flag and release
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/// geometry resource)
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void InvalidateGeometry();
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const std::string &GetShaderName() const { return shader_name_; }
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void PrintShaderWarning(const std::string &message) const;
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protected:
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/// Function to compile shader
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/// In a derived class, this must be declared as final, and called from
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/// the constructor.
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virtual bool Compile() = 0;
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/// Function to release resource
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/// In a derived class, this must be declared as final, and called from
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/// the destructor.
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virtual void Release() = 0;
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virtual bool BindGeometry(const geometry::Geometry &geometry,
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const RenderOption &option,
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const ViewControl &view) = 0;
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virtual bool RenderGeometry(const geometry::Geometry &geometry,
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const RenderOption &option,
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const ViewControl &view) = 0;
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virtual void UnbindGeometry() = 0;
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protected:
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bool ValidateShader(GLuint shader_index);
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bool ValidateProgram(GLuint program_index);
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bool CompileShaders(const char *const vertex_shader_code,
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const char *const geometry_shader_code,
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const char *const fragment_shader_code);
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void ReleaseProgram();
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protected:
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GLuint vertex_shader_ = 0;
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GLuint geometry_shader_ = 0;
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GLuint fragment_shader_ = 0;
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GLuint program_ = 0;
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GLenum draw_arrays_mode_ = GL_POINTS;
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GLsizei draw_arrays_size_ = 0;
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bool compiled_ = false;
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bool bound_ = false;
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void SetShaderName(const std::string &shader_name) {
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shader_name_ = shader_name;
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}
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private:
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std::string shader_name_ = "ShaderWrapper";
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};
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} // namespace glsl
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} // namespace visualization
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} // namespace open3d
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