ViktorLjung
94 lines
1.9 KiB
C++
Executable File
94 lines
1.9 KiB
C++
Executable File
#include "PrecompiledHeader.h"
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#include "Skybox.h"
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Skybox::Skybox(std::string skyboxPath, std::string extension /* = "png" */)
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{
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m_Cubemap = std::shared_ptr<CubemapTexture>(new CubemapTexture(
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skyboxPath + "/right." + extension,
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skyboxPath + "/left." + extension,
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skyboxPath + "/top." + extension,
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skyboxPath + "/bottom." + extension,
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skyboxPath + "/front." + extension,
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skyboxPath + "/back." + extension));
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m_Cubemap->Load();
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Initialize();
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}
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void Skybox::Initialize()
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{
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float cubeVertices[] =
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{
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-1.0f, -1.0f, -1.0f,
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1.0f, -1.0f, -1.0f,
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1.0f, 1.0f, -1.0f,
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-1.0f, 1.0f, -1.0f,
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-1.0f, -1.0f, 1.0f,
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1.0f, -1.0f, 1.0f,
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1.0f, 1.0f, 1.0f,
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-1.0f, 1.0f, 1.0f,
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};
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//std::copy(cubeVertices, cubeVertices + (3*8 - 1), m_CubeVertices);
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unsigned int cubeIndices[] =
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{
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// Back
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0, 2, 3,
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0, 1, 2,
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// Right
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1, 6, 2,
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1, 5, 6,
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// Front
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5, 7, 6,
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5, 4, 7,
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// Left
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4, 3, 7,
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4, 0, 3,
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// Top
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3, 6, 7,
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3, 2, 6,
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// Bottom
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4, 1, 0,
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4, 5, 1,
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};
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//std::copy(cubeIndices, cubeIndices + (3*12 - 1), m_CubeIndices);
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GLuint vbo;
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glBufferData(GL_ARRAY_BUFFER, 3 * 8 * sizeof(float), cubeVertices, GL_STATIC_DRAW);
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glGenBuffers(1, &ibo);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, 3 * 12 * sizeof(int), cubeIndices, GL_STATIC_DRAW);
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glGenVertexArrays(1, &vao);
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glBindVertexArray(vao);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
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glEnableVertexAttribArray(0);
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GLERROR("Skybox init");
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}
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Skybox::~Skybox()
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{
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}
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void Skybox::Draw()
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{
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m_Cubemap->Bind(GL_TEXTURE0);
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glBindVertexArray(vao);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
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glDepthMask(GL_FALSE);
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glDrawElements(GL_TRIANGLES, 3 * 12, GL_UNSIGNED_INT, 0);
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glDepthMask(GL_TRUE);
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}
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