portersky
9114eaabc6
- const T* -> T const* in all headers and implementations - const T& -> T const& for copy constructor/operator= deletes - update AGENTS.md to document east const convention
111 lines
2.3 KiB
C++
111 lines
2.3 KiB
C++
#include "cbt/opengl/shader.hpp"
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
|
|
#include "fmt/std.h"
|
|
|
|
namespace cbt::opengl {
|
|
|
|
shader::shader() {}
|
|
|
|
shader::~shader() {
|
|
if (m_id) {
|
|
glDeleteProgram(m_id);
|
|
}
|
|
}
|
|
|
|
shader::shader(shader&& other) noexcept
|
|
: m_id(other.m_id) {
|
|
other.m_id = 0;
|
|
}
|
|
|
|
shader& shader::operator=(shader&& other) noexcept {
|
|
if (this != &other) {
|
|
if (m_id) {
|
|
glDeleteProgram(m_id);
|
|
}
|
|
m_id = other.m_id;
|
|
other.m_id = 0;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
auto shader::compile_vertex(char const* source) -> bool {
|
|
auto vert = glCreateShader(GL_VERTEX_SHADER);
|
|
glShaderSource(vert, 1, &source, nullptr);
|
|
glCompileShader(vert);
|
|
|
|
GLint success;
|
|
glGetShaderiv(vert, GL_COMPILE_STATUS, &success);
|
|
if (!success) {
|
|
GLchar info[512];
|
|
glGetShaderInfoLog(vert, 512, nullptr, info);
|
|
fmt::print("Vertex shader compile error:\n{}\n", info);
|
|
glDeleteShader(vert);
|
|
return false;
|
|
}
|
|
|
|
if (m_id) {
|
|
glDeleteProgram(m_id);
|
|
}
|
|
m_id = glCreateProgram();
|
|
glAttachShader(m_id, vert);
|
|
glDeleteShader(vert);
|
|
return true;
|
|
}
|
|
|
|
auto shader::compile_fragment(char const* source) -> bool {
|
|
auto frag = glCreateShader(GL_FRAGMENT_SHADER);
|
|
glShaderSource(frag, 1, &source, nullptr);
|
|
glCompileShader(frag);
|
|
|
|
GLint success;
|
|
glGetShaderiv(frag, GL_COMPILE_STATUS, &success);
|
|
if (!success) {
|
|
GLchar info[512];
|
|
glGetShaderInfoLog(frag, 512, nullptr, info);
|
|
fmt::print("Fragment shader compile error:\n{}\n", info);
|
|
glDeleteShader(frag);
|
|
return false;
|
|
}
|
|
|
|
glAttachShader(m_id, frag);
|
|
glDeleteShader(frag);
|
|
return true;
|
|
}
|
|
|
|
auto shader::link() -> bool {
|
|
glLinkProgram(m_id);
|
|
|
|
GLint success;
|
|
glGetProgramiv(m_id, GL_LINK_STATUS, &success);
|
|
if (!success) {
|
|
GLchar info[512];
|
|
glGetProgramInfoLog(m_id, 512, nullptr, info);
|
|
fmt::print("Shader link error:\n{}\n", info);
|
|
glDeleteProgram(m_id);
|
|
m_id = 0;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
auto shader::use() const -> void {
|
|
glUseProgram(m_id);
|
|
}
|
|
|
|
auto shader::unuse() const -> void {
|
|
glUseProgram(0);
|
|
}
|
|
|
|
auto shader::id() const -> GLuint {
|
|
return m_id;
|
|
}
|
|
|
|
auto shader::valid() const -> bool {
|
|
return m_id != 0;
|
|
}
|
|
|
|
}
|