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#include "RendererSection.hpp"
#include <easylogging++.h>
#include "Utility.hpp"
#include "Renderer.hpp"
#include "RendererSectionData.hpp"
const GLfloat vertices[] = {
0, 0, 0,
1, 0, 1,
1, 0, 0,
0, 0, 0,
0, 0, 1,
1, 0, 1,
};
const GLfloat uv_coords[] = {
0.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
};
const GLuint magicUniqueConstant = 88375;
GLuint RendererSection::VboVertices = magicUniqueConstant;
GLuint RendererSection::VboUvs = magicUniqueConstant;
RendererSection::RendererSection(const RendererSectionData &data) {
if (VboVertices == magicUniqueConstant) {
glGenBuffers(1, &VboVertices);
glGenBuffers(1, &VboUvs);
//Cube vertices
glBindBuffer(GL_ARRAY_BUFFER, VboVertices);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
//Cube UVs
glBindBuffer(GL_ARRAY_BUFFER, VboUvs);
glBufferData(GL_ARRAY_BUFFER, sizeof(uv_coords), uv_coords, GL_STATIC_DRAW);
LOG(INFO) << "Created VBOs with vertices (" << VboVertices << ") and UVs (" << VboUvs
<< ") for faces";
}
glGenVertexArrays(1, &Vao);
glGenBuffers(VBOCOUNT, Vbo);
glBindVertexArray(Vao);
{
//Cube vertices
GLuint VertAttribPos = 0;
glBindBuffer(GL_ARRAY_BUFFER, VboVertices);
glVertexAttribPointer(VertAttribPos, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), nullptr);
glEnableVertexAttribArray(VertAttribPos);
//Cube UVs
GLuint UvAttribPos = 2;
glBindBuffer(GL_ARRAY_BUFFER, VboUvs);
glVertexAttribPointer(UvAttribPos, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), nullptr);
glEnableVertexAttribArray(UvAttribPos);
//Textures
GLuint textureAttribPos = 7;
glBindBuffer(GL_ARRAY_BUFFER, Vbo[TEXTURES]);
glVertexAttribPointer(textureAttribPos, 4, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), nullptr);
glEnableVertexAttribArray(textureAttribPos);
glVertexAttribDivisor(textureAttribPos, 1);
glCheckError();
//Blocks models
GLuint matAttribPos = 8;
size_t sizeOfMat4 = 4 * 4 * sizeof(GLfloat);
glBindBuffer(GL_ARRAY_BUFFER, Vbo[MODELS]);
glVertexAttribPointer(matAttribPos + 0, 4, GL_FLOAT, GL_FALSE, sizeOfMat4, nullptr);
glVertexAttribPointer(matAttribPos + 1, 4, GL_FLOAT, GL_FALSE, sizeOfMat4, (void *)(1 * 4 * sizeof(GLfloat)));
glVertexAttribPointer(matAttribPos + 2, 4, GL_FLOAT, GL_FALSE, sizeOfMat4, (void *)(2 * 4 * sizeof(GLfloat)));
glVertexAttribPointer(matAttribPos + 3, 4, GL_FLOAT, GL_FALSE, sizeOfMat4, (void *)(3 * 4 * sizeof(GLfloat)));
glEnableVertexAttribArray(matAttribPos + 0);
glEnableVertexAttribArray(matAttribPos + 1);
glEnableVertexAttribArray(matAttribPos + 2);
glEnableVertexAttribArray(matAttribPos + 3);
glVertexAttribDivisor(matAttribPos + 0, 1);
glVertexAttribDivisor(matAttribPos + 1, 1);
glVertexAttribDivisor(matAttribPos + 2, 1);
glVertexAttribDivisor(matAttribPos + 3, 1);
//Color
GLuint colorAttribPos = 12;
glBindBuffer(GL_ARRAY_BUFFER, Vbo[COLORS]);
glVertexAttribPointer(colorAttribPos, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), nullptr);
glEnableVertexAttribArray(colorAttribPos);
glVertexAttribDivisor(colorAttribPos, 1);
//Light
GLuint lightAttribPos = 13;
glBindBuffer(GL_ARRAY_BUFFER, Vbo[LIGHTS]);
glVertexAttribPointer(lightAttribPos, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), nullptr);
glEnableVertexAttribArray(lightAttribPos);
glVertexAttribDivisor(lightAttribPos, 1);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
glBindVertexArray(0);
glCheckError();
//Upload data to VRAM
glBindBuffer(GL_ARRAY_BUFFER, Vbo[TEXTURES]);
glBufferData(GL_ARRAY_BUFFER, data.textures.size() * sizeof(glm::vec4), data.textures.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, Vbo[MODELS]);
glBufferData(GL_ARRAY_BUFFER, data.models.size() * sizeof(glm::mat4), data.models.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, Vbo[COLORS]);
glBufferData(GL_ARRAY_BUFFER, data.colors.size() * sizeof(glm::vec3), data.colors.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, Vbo[LIGHTS]);
glBufferData(GL_ARRAY_BUFFER, data.lights.size() * sizeof(glm::vec2), data.lights.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
numOfFaces = data.textures.size();
sectionPos = data.sectionPos;
hash = data.hash;
}
RendererSection::RendererSection(RendererSection && other) {
using std::swap;
swap(*this, other);
}
RendererSection::~RendererSection() {
if (Vao != 0)
glDeleteVertexArrays(1, &Vao);
for (int i = 0; i < VBOCOUNT; i++)
if (Vbo[i] != 0) {
glBindBuffer(GL_ARRAY_BUFFER, Vbo[i]);
glBufferData(GL_ARRAY_BUFFER, 0, 0, GL_STATIC_DRAW);
}
glDeleteBuffers(VBOCOUNT, Vbo);
}
void swap(RendererSection & lhs, RendererSection & rhs) {
std::swap(lhs.Vbo, rhs.Vbo);
std::swap(lhs.Vao, rhs.Vao);
std::swap(lhs.hash, rhs.hash);
std::swap(lhs.numOfFaces, rhs.numOfFaces);
std::swap(lhs.sectionPos, rhs.sectionPos);
}
void RendererSection::Render(RenderState &renderState) {
renderState.SetActiveVao(Vao);
glDrawArraysInstanced(GL_TRIANGLES, 0, 6, numOfFaces);
glCheckError();
}
Vector RendererSection::GetPosition()
{
return sectionPos;
}
size_t RendererSection::GetHash()
{
return hash;
}
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