tom/RT_GPU
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~ | First triangle

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TheRedShip
2024-10-14 01:43:29 +02:00
parent d8fd3d0535
commit eae1ae4790
5 changed files with 57 additions and 33 deletions
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30
srcs/RT.cpp
View File

@ -15,18 +15,42 @@
int main(void)
{
Window window;
Shader shader("shaders/vertex.glsl", "shaders/frag.glsl");
shader.attach();
RT::Vec2f vertices[6] = {
{ -0.5f, -1.0f }, { 1.0f, -1.0f }, { -1.0f, 1.0f },
{ 1.0f, -1.0f }, { 1.0f, 1.0f }, { -1.0f, 1.0f }
};
unsigned int VAO, VBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
// Bind the VAO
glBindVertexArray(VAO);
// Bind the VBO and upload the vertex data to it
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
// Set vertex attributes
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), (void*)0);
glEnableVertexAttribArray(0);
// Unbind the VBO and VAO
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
while (!window.shouldClose())
{
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(shader.getProgram());
glBindVertexArray(VAO);
glDrawArrays(GL_TRIANGLES, 0, 6);
window.display();
window.pollEvents();

50
srcs/Shader.cpp
View File

@ -37,23 +37,10 @@ char* load_file(char const* path)
return buffer;
}
void Shader::checkCompileErrors(GLuint shader)
Shader::Shader(std::string vertexPath, std::string fragmentPath)
{
GLint success;
GLchar infoLog[512];
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
if (!success)
{
glGetShaderInfoLog(shader, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::COMPILATION_FAILED\n" << infoLog << std::endl;
}
}
Shader::Shader(char *vertexPath, char *fragmentPath)
{
const char *vertexCode = load_file(vertexPath);
const char *fragmentCode = load_file(fragmentPath);
const char *vertexCode = load_file(vertexPath.c_str());
const char *fragmentCode = load_file(fragmentPath.c_str());
_vertex = glCreateShader(GL_VERTEX_SHADER);
@ -70,15 +57,6 @@ Shader::Shader(char *vertexPath, char *fragmentPath)
checkCompileErrors(_fragment);
}
void Shader::attach(void)
{
_program = glCreateProgram();
glAttachShader(_program, _vertex);
glAttachShader(_program, _fragment);
glLinkProgram(_program);
}
Shader::Shader(Shader const &src)
{
*this = src;
@ -102,6 +80,28 @@ Shader::~Shader(void)
glDeleteProgram(_program);
}
void Shader::attach(void)
{
_program = glCreateProgram();
glAttachShader(_program, _vertex);
glAttachShader(_program, _fragment);
glLinkProgram(_program);
}
void Shader::checkCompileErrors(GLuint shader)
{
GLint success;
GLchar infoLog[512];
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
if (!success)
{
glGetShaderInfoLog(shader, 512, NULL, infoLog);
std::cout << "ERROR::SHADER::COMPILATION_FAILED\n" << infoLog << std::endl;
}
}
GLuint Shader::getProgram(void) const
{
return (_program);