baobeld/game-engine
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add glew

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This commit is contained in:
Benjamin Palko 2024-10-06 10:21:32 -04:00
parent 1fa41594d6
commit 0eb6b005d6
3 changed files with 623 additions and 3 deletions
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53
src/main.cpp
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@ -1,5 +1,41 @@
#include <GL/glew.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <fmt/core.h>
#include <linmath.h>
typedef struct Vertex {
vec2 pos;
vec3 col;
} Vertex;
static const Vertex vertices[3] = {{{-0.6f, -0.4f}, {1.f, 0.f, 0.f}},
{{0.6f, -0.4f}, {0.f, 1.f, 0.f}},
{{0.f, 0.6f}, {0.f, 0.f, 1.f}}};
static const char *vertex_shader_text =
"#version 330\n"
"uniform mat4 MVP;\n"
"in vec3 vCol;\n"
"in vec2 vPos;\n"
"out vec3 color;\n"
"void main()\n"
"{\n"
" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n"
" color = vCol;\n"
"}\n";
static const char *fragment_shader_text = "#version 330\n"
"in vec3 color;\n"
"out vec4 fragment;\n"
"void main()\n"
"{\n"
" fragment = vec4(color, 1.0);\n"
"}\n";
void error_callback(int error_code, const char *description) {
fmt::print("[ERROR - {}] {}\n", error_code, description);
@ -26,17 +62,30 @@ int main() {
fmt::print("GLFW failed to init! {} - {}\n", code, description);
return -1;
}
GLFWwindow *window = glfwCreateWindow(640, 480, "GLFW", NULL, NULL);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow *window = glfwCreateWindow(640, 480, "GLFW", NULL, NULL);
if (!window) {
glfwTerminate();
fmt::print("Window or OpenGL context creation failed\n");
return -1;
}
/* GLEW */
GLenum code = glewInit();
if (code != GLEW_OK) {
fmt::print("GLEW failed to init! {} - {}\n", code,
glewGetErrorString(code));
return -1;
}
glfwSetKeyCallback(window, key_callback);
glfwMakeContextCurrent(window);
glClearColor(0.4f, 0.3f, 0.4f, 0.0f);
glfwSwapInterval(1);
/* Loop until the user closes the window */
while (!glfwWindowShouldClose(window)) {