196 lines
6.9 KiB
C
196 lines
6.9 KiB
C
/* ************************************************************************** */
|
|
/* */
|
|
/* :::::::: */
|
|
/* mlx_init.c :+: :+: */
|
|
/* +:+ */
|
|
/* By: W2Wizard <main@w2wizard.dev> +#+ */
|
|
/* +#+ */
|
|
/* Created: 2021/12/28 00:24:30 by W2Wizard #+# #+# */
|
|
/* Updated: 2023/02/13 11:36:27 by W2Wizard ######## odam.nl */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "MLX42/MLX42_Int.h"
|
|
|
|
//= Private =//
|
|
|
|
static void framebuffer_callback(GLFWwindow *window, int width, int height)
|
|
{
|
|
(void)window;
|
|
glViewport(0, 0, width, height);
|
|
}
|
|
|
|
static bool mlx_create_buffers(mlx_t* mlx)
|
|
{
|
|
mlx_ctx_t* mlxctx = mlx->context;
|
|
|
|
mlxctx->zdepth = 0;
|
|
glActiveTexture(GL_TEXTURE0);
|
|
glGenVertexArrays(1, &(mlxctx->vao));
|
|
glGenBuffers(1, &(mlxctx->vbo));
|
|
glBindVertexArray(mlxctx->vao);
|
|
glBindBuffer(GL_ARRAY_BUFFER, mlxctx->vbo);
|
|
|
|
// Vertex XYZ coordinates
|
|
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), NULL);
|
|
glEnableVertexAttribArray(0);
|
|
|
|
// UV Coordinates
|
|
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (void *)(sizeof(float) * 3));
|
|
glEnableVertexAttribArray(1);
|
|
|
|
// Texture index
|
|
glVertexAttribIPointer(2, 1, GL_BYTE, sizeof(vertex_t), (void *)(sizeof(float) * 5));
|
|
glEnableVertexAttribArray(2);
|
|
|
|
glEnable(GL_BLEND);
|
|
glEnable(GL_DEPTH_TEST);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture0"), 0);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture1"), 1);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture2"), 2);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture3"), 3);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture4"), 4);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture5"), 5);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture6"), 6);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture7"), 7);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture8"), 8);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture9"), 9);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture10"), 10);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture11"), 11);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture12"), 12);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture13"), 13);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture14"), 14);
|
|
glUniform1i(glGetUniformLocation(mlxctx->shaderprogram, "Texture15"), 15);
|
|
|
|
return (true);
|
|
}
|
|
|
|
/**
|
|
* Compiles the given shader source code of a given shader type.
|
|
* Returns shader object via param.
|
|
*
|
|
* @param code The shader source code.
|
|
* @param Type GL_VERTEX_SHADER, GL_FRAGMENT_SHADER, GL_GEOMETRY_SHADER, ...
|
|
* @return Non-zero on success, else 0.
|
|
*/
|
|
static uint32_t mlx_compile_shader(const char* code, int32_t type)
|
|
{
|
|
GLuint shader;
|
|
int32_t success;
|
|
char infolog[512] = {0};
|
|
|
|
if (!code || (shader = glCreateShader(type)) == 0)
|
|
return (0);
|
|
|
|
GLint len = strlen(code);
|
|
glShaderSource(shader, 1, &code, &len);
|
|
glCompileShader(shader);
|
|
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
|
|
if (!success)
|
|
{
|
|
glGetShaderInfoLog(shader, sizeof(infolog), NULL, infolog);
|
|
fprintf(stderr, "%s", infolog);
|
|
return (0);
|
|
}
|
|
return (shader);
|
|
}
|
|
|
|
static bool mlx_init_render(mlx_t* mlx)
|
|
{
|
|
uint32_t vshader = 0;
|
|
uint32_t fshader = 0;
|
|
char infolog[512] = {0};
|
|
mlx_ctx_t* mlxctx = mlx->context;
|
|
|
|
glfwMakeContextCurrent(mlx->window);
|
|
glfwSetFramebufferSizeCallback(mlx->window, framebuffer_callback);
|
|
glfwSetWindowUserPointer(mlx->window, mlx);
|
|
glfwSwapInterval(MLX_SWAP_INTERVAL);
|
|
|
|
// Load all OpenGL function pointers
|
|
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
|
|
return (mlx_error(MLX_GLADFAIL));
|
|
|
|
if (!(vshader = mlx_compile_shader(vert_shader, GL_VERTEX_SHADER)))
|
|
return (mlx_error(MLX_VERTFAIL));
|
|
if (!(fshader = mlx_compile_shader(frag_shader, GL_FRAGMENT_SHADER)))
|
|
return (mlx_error(MLX_FRAGFAIL));
|
|
if (!(mlxctx->shaderprogram = glCreateProgram()))
|
|
return (mlx_error(MLX_SHDRFAIL));
|
|
glAttachShader(mlxctx->shaderprogram, vshader);
|
|
glAttachShader(mlxctx->shaderprogram, fshader);
|
|
glLinkProgram(mlxctx->shaderprogram);
|
|
|
|
int32_t success;
|
|
glGetProgramiv(mlxctx->shaderprogram, GL_LINK_STATUS, &success);
|
|
if (!success)
|
|
{
|
|
glGetProgramInfoLog(mlxctx->shaderprogram, sizeof(infolog), NULL, infolog);
|
|
fprintf(stderr, "%s", infolog);
|
|
return (mlx_error(MLX_SHDRFAIL));
|
|
}
|
|
glDeleteShader(vshader);
|
|
glDeleteShader(fshader);
|
|
glUseProgram(mlxctx->shaderprogram);
|
|
|
|
for (size_t i = 0; i < 16; i++)
|
|
mlxctx->bound_textures[i] = 0;
|
|
|
|
return (true);
|
|
}
|
|
|
|
//= Public =//
|
|
|
|
// NOTE: https://www.glfw.org/docs/3.3/group__window.html
|
|
|
|
// Default settings
|
|
int32_t mlx_settings[MLX_SETTINGS_MAX] = {false, false, false, true, false};
|
|
mlx_errno_t mlx_errno = MLX_SUCCESS;
|
|
bool sort_queue = false;
|
|
|
|
mlx_t* mlx_init(int32_t width, int32_t height, const char* title, bool resize)
|
|
{
|
|
MLX_NONNULL(title);
|
|
MLX_ASSERT(width > 0, "Window width must be positive");
|
|
MLX_ASSERT(height > 0, "Window height must be positive");
|
|
|
|
bool init;
|
|
mlx_t* mlx;
|
|
if (!(init = glfwInit()))
|
|
return ((void*)mlx_error(MLX_GLFWFAIL));
|
|
if (!(mlx = calloc(1, sizeof(mlx_t))))
|
|
return ((void*)mlx_error(MLX_MEMFAIL));
|
|
if (!(mlx->context = calloc(1, sizeof(mlx_ctx_t))))
|
|
return (free(mlx), (void*)mlx_error(MLX_MEMFAIL));
|
|
|
|
mlx_ctx_t* const mlxctx = mlx->context;
|
|
mlx->width = width;
|
|
mlx->height = height;
|
|
mlxctx->initialWidth = width;
|
|
mlxctx->initialHeight = height;
|
|
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
|
|
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
|
|
glfwWindowHint(GLFW_MAXIMIZED, mlx_settings[MLX_MAXIMIZED]);
|
|
glfwWindowHint(GLFW_DECORATED, mlx_settings[MLX_DECORATED]);
|
|
glfwWindowHint(GLFW_VISIBLE, !mlx_settings[MLX_HEADLESS]);
|
|
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
|
|
#ifdef __APPLE__
|
|
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
|
|
#endif
|
|
glfwWindowHint(GLFW_RESIZABLE, resize);
|
|
if (!(mlx->window = glfwCreateWindow(width, height, title, mlx_settings[MLX_FULLSCREEN] ? glfwGetPrimaryMonitor() : NULL, NULL)))
|
|
return (mlx_terminate(mlx), (void*)mlx_error(MLX_WINFAIL));
|
|
if (!mlx_init_render(mlx) || !mlx_create_buffers(mlx))
|
|
return (mlx_terminate(mlx), NULL);
|
|
return (mlx);
|
|
}
|
|
|
|
void mlx_set_setting(mlx_settings_t setting, int32_t value)
|
|
{
|
|
MLX_ASSERT(setting >= 0 && setting < MLX_SETTINGS_MAX, "Invalid settings value");
|
|
mlx_settings[setting] = value;
|
|
}
|