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authorTomasz Kramkowski <tk@the-tk.com>2018-03-30 15:50:27 +0100
committerTomasz Kramkowski <tk@the-tk.com>2018-03-30 15:50:27 +0100
commit6d17b081cc16b0ba13ab918e885674b2defa8280 (patch)
tree8eda0d35f8506659b100f4772d6d89bfd5a28f8a /faqe.c
parent83b3fe86b1c13f40a6be4580b4079980030a54a7 (diff)
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Rename project gltest -> faqe
The project has been renamed to faqe. The logic for this name: quake -> fake quake -> faqe
Diffstat (limited to 'faqe.c')
-rw-r--r--faqe.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/faqe.c b/faqe.c
new file mode 100644
index 0000000..0a9ab7d
--- /dev/null
+++ b/faqe.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2018 Tomasz Kramkowski <tk@the-tk.com>
+ * SPDX-License-Identifier: MIT
+ */
+#include <GLFW/glfw3.h>
+#include <stdbool.h>
+
+#include "assets.h"
+#include "eprintf.h"
+#include "gl.h"
+#include "glprog.h"
+#include "linmath.h"
+#include "nelem.h"
+
+enum {
+ WIDTH = 800,
+ HEIGHT = 600,
+};
+
+void fb_size_cb(GLFWwindow *win, int width, int height)
+{
+ (void)win;
+ gl_viewport(0, 0, width, height);
+}
+
+void take_input(GLFWwindow *win)
+{
+ if (glfwGetKey(win, GLFW_KEY_ESCAPE) == GLFW_PRESS)
+ glfwSetWindowShouldClose(win, true);
+}
+
+int main(int argc, char **argv)
+{
+ GLFWwindow *win;
+ GLuint ebo, vbo, vao, prog;
+ GLint ucolor;
+ struct vertex {
+ vec3 pos;
+ vec3 col;
+ vec2 uv;
+ } verts[] = {
+ {{ 0.5, 0.5, 0.0 }, { 1.0, 0.0, 0.0 }, { 1.0, 1.0 }},
+ {{ 0.5, -0.5, 0.0 }, { 0.0, 1.0, 0.0 }, { 1.0, 0.0 }},
+ {{ -0.5, -0.5, 0.0 }, { 0.0, 0.0, 1.0 }, { 0.0, 0.0 }},
+ {{ -0.5, 0.5, 0.0 }, { 1.0, 1.0, 0.0 }, { 0.0, 1.0 }},
+ };
+ GLuint idxs[] = {
+ 0, 1, 3,
+ 1, 2, 3,
+ };
+
+ setprogname(argc >= 1 && argv[0] != NULL ? argv[0] : "faqe");
+
+ glfwInit();
+
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+ glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+ glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+ win = glfwCreateWindow(WIDTH, HEIGHT, "faqe", NULL, NULL);
+ if (win == NULL)
+ eprintf("Failed to create GLFW window");
+ glfwMakeContextCurrent(win);
+
+ gl_load((gl_loadfunc *)glfwGetProcAddress);
+ glfwSetFramebufferSizeCallback(win, &fb_size_cb);
+ fb_size_cb(win, WIDTH, HEIGHT);
+
+ gl_buf_gen(1, &vbo);
+ gl_buf_gen(1, &ebo);
+ gl_va_gen(1, &vao);
+
+ gl_va_bind(vao);
+
+ gl_buf_bind(GL_ARRAY_BUFFER, vbo);
+ gl_buf_data(GL_ARRAY_BUFFER, sizeof verts, verts, GL_STATIC_DRAW);
+
+ gl_buf_bind(GL_ELEMENT_ARRAY_BUFFER, ebo);
+ gl_buf_data(GL_ELEMENT_ARRAY_BUFFER, sizeof idxs, idxs, GL_STATIC_DRAW);
+
+ gl_va_define(0, NELEM(verts[0].pos), GL_FLOAT, GL_FALSE, sizeof *verts, (void *)offsetof(struct vertex, pos));
+ gl_va_enable(0);
+ gl_va_define(1, NELEM(verts[0].col), GL_FLOAT, GL_FALSE, sizeof *verts, (void *)offsetof(struct vertex, col));
+ gl_va_enable(1);
+ gl_va_define(2, NELEM(verts[0].uv), GL_FLOAT, GL_FALSE, sizeof *verts, (void *)offsetof(struct vertex, uv));
+ gl_va_enable(2);
+
+ prog = glprog_load(2, (struct shdrdat []){
+ { GL_VERTEX_SHADER, vert_glsl.data, vert_glsl.size },
+ { GL_FRAGMENT_SHADER, frag_glsl.data, frag_glsl.size },
+ },
+ 1, &(struct unidat){ "ucolor", &ucolor });
+
+ gl_poly_mode(GL_FRONT_AND_BACK, GL_LINE);
+
+ while (!glfwWindowShouldClose(win)) {
+ take_input(win);
+
+ gl_clearcolor(0.2, 0.3, 0.3, 1.0);
+ gl_clear(GL_COLOR_BUFFER_BIT);
+ gl_prog_use(prog);
+ gl_va_bind(vao);
+ gl_draw_elems(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
+ gl_va_bind(0);
+
+ glfwSwapBuffers(win);
+ glfwPollEvents();
+ }
+
+ glfwTerminate();
+}