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Diffstat (limited to 'teensy/platform/gl/gl.c')
-rw-r--r--teensy/platform/gl/gl.c309
1 files changed, 0 insertions, 309 deletions
diff --git a/teensy/platform/gl/gl.c b/teensy/platform/gl/gl.c
deleted file mode 100644
index 3e454d2..0000000
--- a/teensy/platform/gl/gl.c
+++ /dev/null
@@ -1,309 +0,0 @@
-// The OpenGL platform. Uses GLFW for an interface with the OS. The code
-// quality here is meh. Things could be organized more into functions, but as
-// for now, it works fine, and isn't worth improving immediately.
-
-//#include <glad/glad.h>
-#include <GLFW/glfw3.h>
-
-#include "teensy.h"
-#include "teensy_common.h"
-#include "teensy_platform.h"
-
-static char vert[] =
- "#version 330 core\n"
- "layout (location = 0) in vec2 v_pos;\n"
- "layout (location = 1) in vec2 v_uv;\n"
- "\n"
- "out vec2 f_uv;\n"
- "\n"
- "void main() {\n"
- " gl_Position = vec4(v_pos, 0.0, 1.0);\n"
- " f_uv = v_uv;\n"
- "}\n"
-;
-
-static char frag[] =
- "#version 330 core\n"
- "\n"
- "in vec2 f_uv;\n"
- "\n"
- "out vec4 color;\n"
- "\n"
- "uniform sampler2D tex;\n"
- "\n"
- "void main() {\n"
- " color = texture2D(tex, f_uv);\n"
- "}\n"
-;
-
-typedef struct {
- GLFWwindow *win;
- GLuint vao;
- GLuint vbo;
- GLuint program;
- GLint uniform_tex_loc;
- GLuint screen_handle;
- uint32_t typed;
-} Gl_Platform;
-
-typedef unsigned int GLuint;
-typedef unsigned int GLenum;
-
-Gl_Platform p;
-
-GLuint glCreateShader(GLenum type);
-void glCompileShader(GLuint shader);
-void glShaderSource(GLuint shader, int n, const char **src, void *ptr);
-void glGetShaderiv(GLuint shader, GLenum what, int *res);
-void glGetShaderInfoLog(GLuint shader, size_t len, void *ptr, char *txt);
-void glGenVertexArrays(int n, GLuint *vaos);
-void glGenBuffers(int n, GLuint *bos);
-void glBindVertexArray(GLuint vao);
-void glBindBuffer(GLenum type, GLuint bo);
-void glBufferData(GLenum type, size_t size, void *data, GLenum draw);
-void glVertexAttribPointer();
-void glEnableVertexAttribArray(int n);
-GLuint glCreateProgram(void);
-void glAttachShader(GLuint prog, GLuint shader);
-void glLinkProgram(GLuint prog);
-void glDeleteShader(GLuint shader);
-void glGetProgramiv(GLuint prog, GLenum type, int *res);
-void glGetProgramInfoLog(GLuint prog, size_t len, void *ptr, char *txt);
-int glGetUniformLocation(GLuint prog, const char *name);
-void glDeleteProgram(GLuint prog);
-void glDeleteBuffers(int n, GLuint *bos);
-void glDeleteVertexArrays(int n, GLuint *vaos);
-void glGenerateMipmap(GLenum type);
-void glUseProgram(GLuint prog);
-void glUniform1i(int loc, int val);
-
-static
-void character_callback(GLFWwindow *window, unsigned int cp)
-{
- (void)window;
- p.typed = cp;
-}
-
-static
-GLuint compile_shader(GLenum type, const char *src)
-{
- GLuint shader = glCreateShader(type);
- glShaderSource(shader, 1, &src, NULL);
- glCompileShader(shader);
-
- int ok;
- glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
- if (!ok) {
- char msg[1024];
- glGetShaderInfoLog(shader, 1024, NULL, msg);
- ty_log_fatal(TY_PLATFORM_ERR, "failed to compile shader: %s", msg);
- }
-
- return shader;
-}
-
-void ty_platform_init(ty_Ctx *ctx)
-{
- ty_log_info("initializing GLFW...");
- if (glfwInit() < 0)
- ty_log_fatal(TY_PLATFORM_ERR, "could not init GLFW");
-
- glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
- glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
- glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
-
- p.win = glfwCreateWindow(
- ctx->hints.scr_width * 3,
- ctx->hints.scr_height * 3,
- ctx->hints.game_title,
- NULL,
- NULL
- );
-
- if (!p.win)
- ty_log_fatal(TY_PLATFORM_ERR, "could not init GLFW window");
-
- glfwMakeContextCurrent(p.win);
-
- glfwSetCharCallback(p.win, character_callback);
-
- ty_Vec2 vertices[] = {
- ty_vec2(-1, -1), ty_vec2(0, 1),
- ty_vec2( 1, -1), ty_vec2(1, 1),
- ty_vec2( 1, 1), ty_vec2(1, 0),
-
- ty_vec2(-1, -1), ty_vec2(0, 1),
- ty_vec2( 1, 1), ty_vec2(1, 0),
- ty_vec2(-1, 1), ty_vec2(0, 0),
- };
-
- glGenTextures(1, &p.screen_handle);
- glBindTexture(GL_TEXTURE_2D, p.screen_handle);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
- glGenVertexArrays(1, &p.vao);
- glGenBuffers(1, &p.vbo);
-
- glBindVertexArray(p.vao);
-
- glBindBuffer(GL_ARRAY_BUFFER, p.vbo);
- glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
- glVertexAttribPointer(
- 0,
- 2, GL_FLOAT,
- GL_FALSE,
- sizeof(ty_Vec2) * 2, (void*)0
- );
- glEnableVertexAttribArray(0);
- glVertexAttribPointer(
- 1,
- 2, GL_FLOAT,
- GL_FALSE,
- sizeof(ty_Vec2) * 2, (void*)sizeof(ty_Vec2)
- );
-
- glEnableVertexAttribArray(1);
-
- p.program = glCreateProgram();
- GLuint vert_sh = compile_shader(GL_VERTEX_SHADER, vert);
- GLuint frag_sh = compile_shader(GL_FRAGMENT_SHADER, frag);
- glAttachShader(p.program, vert_sh);
- glAttachShader(p.program, frag_sh);
- glLinkProgram(p.program);
-
- glDeleteShader(vert_sh);
- glDeleteShader(frag_sh);
-
- int ok;
- glGetProgramiv(p.program, GL_LINK_STATUS, &ok);
- if (!ok) {
- char msg[1024];
- glGetProgramInfoLog(p.program, 1024, NULL, msg);
- ty_log_fatal(TY_PLATFORM_ERR, "failed to link shaders: %s", msg);
- }
-
- p.uniform_tex_loc = glGetUniformLocation(p.program, "texture");
-}
-
-void ty_platform_deinit(void)
-{
- ty_log_info("deinitializing OpenGL...");
-
- glDeleteProgram(p.program);
- glDeleteBuffers(1, &p.vbo);
- glDeleteVertexArrays(1, &p.vao);
- glDeleteTextures(1, &p.screen_handle);
-
- ty_log_info("deinitializing GLFW...");
-
- glfwDestroyWindow(p.win);
- glfwTerminate();
-}
-
-void ty_platform_frame(ty_Image img)
-{
- glfwPollEvents();
-
- int win_width, win_height;
- glfwGetWindowSize(p.win, &win_width, &win_height);
-
- glViewport(0, 0, win_width, win_height);
-
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(GL_TEXTURE_2D, p.screen_handle);
- glTexImage2D(
- GL_TEXTURE_2D,
- 0,
- GL_RGB,
- img.width, img.height,
- 0,
- GL_RGB,
- GL_UNSIGNED_BYTE,
- img.data
- );
- glGenerateMipmap(GL_TEXTURE_2D);
-
- glClearColor(0, 0, 0, 1);
- glClear(GL_COLOR_BUFFER_BIT);
-
- glUseProgram(p.program);
- glUniform1i(p.uniform_tex_loc, 0);
-
- glBindVertexArray(p.vao);
- glDrawArrays(GL_TRIANGLES, 0, 6);
-
- glfwSwapBuffers(p.win);
-
- if (glfwGetKey(p.win, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
- glfwSetWindowShouldClose(p.win, true);
- }
-}
-
-bool ty_platform_os_wants_quit(void)
-{
- return glfwWindowShouldClose(p.win);
-}
-
-double ty_platform_get_time(void)
-{
- return glfwGetTime();
-}
-
-ty_Vec2i ty_platform_get_mouse(void)
-{
- double x, y;
- glfwGetCursorPos(p.win, &x, &y);
-
-
- int win_width, win_height;
- glfwGetWindowSize(p.win, &win_width, &win_height);
-
- double scalex = win_width / ctx.hints.scr_width;
- double scaley = win_height / ctx.hints.scr_height;
- return ty_vec2i(x / scalex, y / scaley);
-}
-
-bool ty_platform_is_button_down(ty_Button btn)
-{
- int res = -1;
- switch (btn) {
- case TY_BTN_LEFT_UP: res = glfwGetKey(p.win, GLFW_KEY_W); break;
- case TY_BTN_LEFT_DOWN: res = glfwGetKey(p.win, GLFW_KEY_S); break;
- case TY_BTN_LEFT_LEFT: res = glfwGetKey(p.win, GLFW_KEY_A); break;
- case TY_BTN_LEFT_RIGHT: res = glfwGetKey(p.win, GLFW_KEY_D); break;
- case TY_BTN_RIGHT_UP: res = glfwGetKey(p.win, GLFW_KEY_I); break;
- case TY_BTN_RIGHT_DOWN: res = glfwGetKey(p.win, GLFW_KEY_K); break;
- case TY_BTN_RIGHT_LEFT: res = glfwGetKey(p.win, GLFW_KEY_J); break;
- case TY_BTN_RIGHT_RIGHT: res = glfwGetKey(p.win, GLFW_KEY_L); break;
- case TY_BTN_ACTION_1: res = glfwGetKey(p.win, GLFW_KEY_Q); break;
- case TY_BTN_ACTION_2: res = glfwGetKey(p.win, GLFW_KEY_E); break;
- case TY_BTN_ACTION_3: res = glfwGetKey(p.win, GLFW_KEY_U); break;
- case TY_BTN_ACTION_4: res = glfwGetKey(p.win, GLFW_KEY_O); break;
- case TY_BTN_DB_CTRL: res = glfwGetKey(p.win, GLFW_KEY_LEFT_CONTROL); break;
- case TY_BTN_DB_SHIFT: res = glfwGetKey(p.win, GLFW_KEY_LEFT_SHIFT); break;
- case TY_BTN_DB_BKSPACE: res = glfwGetKey(p.win, GLFW_KEY_BACKSPACE); break;
- case TY_BTN_DB_LMB:
- res = glfwGetMouseButton(p.win, GLFW_MOUSE_BUTTON_LEFT);
- break;
- case TY_BTN_DB_RMB:
- res = glfwGetMouseButton(p.win, GLFW_MOUSE_BUTTON_RIGHT);
- break;
- case TY_BTN_DB_MMB:
- res = glfwGetMouseButton(p.win, GLFW_MOUSE_BUTTON_MIDDLE);
- break;
- }
-
- return res == GLFW_PRESS;
-}
-
-bool ty_platform_get_typed_char(uint32_t *c)
-{
- assert(c);
- *c = p.typed;
- if (p.typed == 0)
- return false;
- p.typed = 0;
- return true;
-}
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