036856aed5
* Move everything into package * Remove .DS_Store * Move scripts and eslintrc to package * Create CODE_OF_CONDUCT.md * fix some links * Update all links (I think) * Update generated docs * Update notice-yarn-changes.yml * Update validate-android.yml * Update validate-cpp.yml * Delete notice-yarn-changes.yml * Update validate-cpp.yml * Update validate-cpp.yml * Update validate-js.yml * Update validate-cpp.yml * Update validate-cpp.yml * wrong c++ style * Revert "wrong c++ style" This reverts commit 55a3575589c6f13f8b05134d83384f55e0601ab2.
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
//
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// Created by Marc Rousavy on 28.08.23.
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//
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#pragma once
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#include <EGL/egl.h>
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#include <GLES2/gl2.h>
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#include "OpenGLTexture.h"
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namespace vision {
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#define NO_SHADER 0
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#define NO_POSITION 0
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#define NO_BUFFER 0
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struct Vertex {
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GLfloat position[2];
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GLfloat texCoord[2];
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};
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class PassThroughShader {
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public:
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PassThroughShader() = default;
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~PassThroughShader();
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/**
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* Draw the texture using this shader.
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* Note: At the moment, only EXTERNAL textures are supported by the Shader.
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*/
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void draw(const OpenGLTexture& texture, float* transformMatrix);
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private:
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// Loading
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static GLuint loadShader(GLenum shaderType, const char* shaderCode);
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static GLuint createProgram();
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private:
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// Parameters
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GLuint _programId = NO_SHADER;
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GLuint _vertexBuffer = NO_BUFFER;
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struct VertexParameters {
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GLint aPosition = NO_POSITION;
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GLint aTexCoord = NO_POSITION;
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GLint uTransformMatrix = NO_POSITION;
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} _vertexParameters;
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struct FragmentParameters {
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GLint uTexture = NO_POSITION;
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} _fragmentParameters;
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private:
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// Statics
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static constexpr Vertex VERTICES[] = {
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{{-1.0f, -1.0f}, {0.0f, 0.0f}}, // bottom-left
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{{1.0f, -1.0f}, {1.0f, 0.0f}}, // bottom-right
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{{-1.0f, 1.0f}, {0.0f, 1.0f}}, // top-left
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{{1.0f, 1.0f}, {1.0f, 1.0f}} // top-right
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};
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static constexpr char VERTEX_SHADER[] = R"(
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attribute vec4 aPosition;
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attribute vec2 aTexCoord;
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uniform mat4 uTransformMatrix;
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varying vec2 vTexCoord;
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void main() {
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gl_Position = aPosition;
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vTexCoord = (uTransformMatrix * vec4(aTexCoord, 0.0, 1.0)).xy;
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}
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)";
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static constexpr char FRAGMENT_SHADER[] = R"(
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#extension GL_OES_EGL_image_external : require
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precision mediump float;
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varying vec2 vTexCoord;
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uniform samplerExternalOES uTexture;
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void main() {
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gl_FragColor = texture2D(uTexture, vTexCoord);
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}
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)";
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};
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} // namespace vision
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