107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
#include "GLLoad.hpp"
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#define STB_IMAGE_IMPLEMENTATION
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#include "stb_image.h"
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#include "Image.hpp"
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#include "ProgramPipeline.hpp"
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#include "VertexArray.hpp"
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#include "Window.hpp"
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#include "Textures.hpp"
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int main() {
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nb::logger.log("Howdy!");
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nb::Window window(400, 400, "Hello!");
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window.setWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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window.setWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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window.init();
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auto vert = std::make_shared<nb::Shader>(
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GL_VERTEX_SHADER,
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"#version 330 core\n"
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"layout (location = 0) in vec2 aPos;\n"
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"layout (location = 1) in vec2 tPos;\n"
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"out vec2 vPos;\n"
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"void main()\n"
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"{\n"
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" gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);\n"
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" vPos = tPos;\n"
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"}\0"
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);
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LOG(vert->log());
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auto frag = std::make_shared<nb::Shader>(
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GL_FRAGMENT_SHADER,
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"#version 330 core\n"
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"in vec2 vPos;\n"
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"out vec4 FragColor;\n"
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"uniform sampler2D tex;\n"
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"void main()\n"
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"{\n"
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" FragColor = texture(tex, vPos);\n"
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"}\n\0"
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);
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LOG(frag->log());
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nb::ByteVector data = nb::vectorToBytes<float>({
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-0.5, -0.5, 0,0,
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-0.5, 0.5, 0,1,
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0.5, 0.5, 1,1,
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0.5, -0.5, 1,0
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});
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nb::Program prog({vert, frag});
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prog.bind();
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std::vector<uint32_t> indxs = {0, 1, 2, 0, 2, 3};
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nb::VertexGroup tri(data, {
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nb::VertexAttribute{
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2,
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GL_FLOAT,
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false,
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{0, 16}
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},
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nb::VertexAttribute{
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2,
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GL_FLOAT,
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false,
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{8, 16}
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}
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}, indxs);
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tri.bind();
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int width, height, numChannels;
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auto raw_img_data = stbi_load(
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"./awesomeface.png",
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&width,
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&height,
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&numChannels,
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0
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);
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LOG(numChannels);
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using RGBA = nb::Pixel<uint8_t, nb::Red, nb::Green, nb::Blue, nb::Alpha>;
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nb::ImageReference<RGBA> img(width, height, raw_img_data);
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auto tex = nb::ImageTexture<RGBA>();
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tex.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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tex.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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tex.setImage(img);
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tex.bind();
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tri.bind();
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LOG(img.at(256, 256).r);
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stbi_image_free(raw_img_data);
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LOG(prog.log());
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GLFWwindow* window_ptr = window.getWindow();
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while(!glfwWindowShouldClose(window_ptr)) {
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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tri.draw();
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glfwPollEvents();
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glfwSwapBuffers(window_ptr);
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}
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return 0;
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} |