2020-01-23 23:04:46 +03:00
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// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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2019-06-23 05:21:30 +03:00
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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2019-06-22 22:24:49 +03:00
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module gl
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2019-07-10 14:27:35 +03:00
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#flag -I @VROOT/thirdparty/glad
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2019-06-22 22:27:59 +03:00
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#include "glad.h"
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2019-08-23 00:00:31 +03:00
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#flag @VROOT/thirdparty/glad/glad.o
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2019-06-23 14:17:33 +03:00
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2019-09-23 13:42:20 +03:00
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// joe-c: fix & remove
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2020-01-21 20:47:52 +03:00
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pub enum TmpGlImportHack{ non_empty }
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2019-09-23 13:42:20 +03:00
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2020-04-02 02:45:22 +03:00
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fn C.glDisable()
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fn C.glEnable()
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fn C.glScissor()
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fn C.glVertexAttribPointer()
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fn C.glGenBuffers()
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fn C.glEnableVertexAttribArray()
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fn C.glGenVertexArrays()
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fn C.glDrawElements()
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fn C.glUseProgram()
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fn C.glDrawArrays()
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fn C.glBufferData()
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fn C.glGenerateMipmap()
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fn C.glTexParameteri()
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fn C.glDeleteTextures()
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fn C.glBindTexture()
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fn C.glActiveTexture()
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fn C.glGenTextures()
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fn C.glBindBuffer()
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fn C.glBindVertexArray()
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fn C.glGetProgramInfoLog()
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fn C.glGetShaderInfoLog()
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fn C.glDeleteShader()
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fn C.glGetProgramiv()
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fn C.glLinkProgram()
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fn C.glAttachShader()
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fn C.glGetShaderiv()
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fn C.glCompileShader()
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fn C.glShaderSource()
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fn C.glCreateProgram()
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fn C.glClear()
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fn C.glCreateShader()
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fn C.glClearColor()
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fn C.glViewport()
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fn C.gladLoadGL()
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fn C.glTexImage2D()
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fn C.glPixelStorei()
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fn C.glBlendFunc()
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2019-06-26 18:49:50 +03:00
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pub fn init_glad() {
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2019-06-22 22:27:59 +03:00
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ok := C.gladLoadGL()
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2019-09-21 18:21:45 +03:00
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if isnil(ok) {
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2019-06-23 11:41:42 +03:00
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println('Failed to initialize glad OpenGL context')
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exit(1)
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2019-06-22 22:27:59 +03:00
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}
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2019-06-22 22:24:49 +03:00
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}
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2019-06-26 17:39:40 +03:00
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pub fn viewport(a, b, c, d int) {
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C.glViewport(a, b, c, d)
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}
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pub fn clear_color(r, g, b, a int) {
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2019-06-28 14:49:27 +03:00
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C.glClearColor(f32(r)/255.0, f32(g)/255.0, f32(b)/255.0, f32(a)/255.0)
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}
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pub fn clear() {
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2019-08-23 00:00:31 +03:00
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C.glClear(C.GL_COLOR_BUFFER_BIT | C.GL_DEPTH_BUFFER_BIT | C.GL_STENCIL_BUFFER_BIT)
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}
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pub fn create_shader(typ int) int {
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return C.glCreateShader(typ)
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}
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pub fn create_program() int {
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return C.glCreateProgram()
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}
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2019-06-26 17:39:40 +03:00
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pub fn shader_source(shader, a int, source string, b int) {
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C.glShaderSource(shader, a, &source.str, b)
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}
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pub fn compile_shader(shader int) {
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C.glCompileShader(shader)
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}
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pub fn shader_compile_status(shader int) int {
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success := 0
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C.glGetShaderiv(shader, C.GL_COMPILE_STATUS, &success)
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return success
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}
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2019-06-26 17:39:40 +03:00
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pub fn attach_shader(program, shader int) {
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// fn (s Shader) attach(program int) {
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C.glAttachShader(program, shader)
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}
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pub fn link_program(program int) {
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C.glLinkProgram(program)
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}
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pub fn get_program_link_status(program int) int {
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success := 0
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C.glGetProgramiv(program, C.GL_LINK_STATUS, &success)
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return success
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}
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pub fn delete_shader(shader int) {
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C.glDeleteShader(shader)
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}
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pub fn shader_info_log(shader int) string {
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2019-07-15 23:44:26 +03:00
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info_log := [512]byte
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C.glGetShaderInfoLog(shader, 512, 0, info_log)
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return tos_clone(info_log)
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}
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pub fn get_program_info_log(program int) string {
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2019-07-15 23:44:26 +03:00
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info_log := [1024]byte
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C.glGetProgramInfoLog(program, 1024, 0, info_log)
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return tos_clone(info_log)
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2019-06-22 22:24:49 +03:00
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}
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pub fn bind_vao(vao u32) {
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C.glBindVertexArray(vao)
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}
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pub fn bind_buffer(typ int, vbo u32) {
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C.glBindBuffer(typ, vbo)
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}
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pub fn gen_texture() u32 {
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res := u32(0)
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C.glGenTextures(1, &res)
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return res
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}
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pub fn active_texture(t int) {
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C.glActiveTexture(t)
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}
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pub fn bind_2d_texture(texture u32) {
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C.glBindTexture(C.GL_TEXTURE_2D, texture)
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}
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pub fn delete_texture(texture u32) {
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C.glDeleteTextures(1, &texture)
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}
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2019-06-26 17:39:40 +03:00
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pub fn buffer_data(typ, size int, arr voidptr, draw_typ int) {
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2019-06-22 22:24:49 +03:00
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C.glBufferData(typ, size, arr, draw_typ)
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}
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2019-06-30 14:06:46 +03:00
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pub fn buffer_data_int(typ int, vertices []int, draw_typ int) {
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2019-06-22 22:24:49 +03:00
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size := sizeof(int) * vertices.len
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C.glBufferData(typ, size, vertices.data, draw_typ)
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}
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2019-06-30 14:06:46 +03:00
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pub fn buffer_data_f32(typ int, vertices []f32, draw_typ int) {
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2019-06-25 22:36:44 +03:00
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size := sizeof(f32) * vertices.len
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2019-06-22 22:24:49 +03:00
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C.glBufferData(typ, size, vertices.data, draw_typ)
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}
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2019-06-30 14:06:46 +03:00
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pub fn set_vbo(vbo u32, vertices []f32, draw_typ int) {
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2019-08-23 00:00:31 +03:00
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gl.bind_buffer(C.GL_ARRAY_BUFFER, vbo)
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gl.buffer_data_f32(C.GL_ARRAY_BUFFER, vertices, draw_typ)
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2019-06-22 22:24:49 +03:00
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}
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2019-06-30 14:06:46 +03:00
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pub fn set_ebo(ebo u32, indices []int, draw_typ int) {
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2019-08-23 00:00:31 +03:00
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gl.bind_buffer(C.GL_ELEMENT_ARRAY_BUFFER, ebo)
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2019-06-22 22:24:49 +03:00
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// gl.buffer_data_int(GL_ELEMENT_ARRAY_BUFFER, indices, draw_typ)
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2019-08-23 00:00:31 +03:00
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gl.buffer_data_int(C.GL_ELEMENT_ARRAY_BUFFER, indices, draw_typ)
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2019-06-22 22:24:49 +03:00
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}
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// /////////////////////
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// fn gen_vertex_arrays(a int, vao uint) {
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// # glGenVertexArrays(a, &VAO);
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// }
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pub fn draw_arrays(typ, start, len int) {
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C.glDrawArrays(typ, start, len)
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}
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pub fn draw_elements(mode, count, typ, indices int) {
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C.glDrawElements(mode, count, typ, indices)
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}
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pub fn use_program(program int) {
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C.glUseProgram(program)
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}
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pub fn gen_vertex_array() u32 {
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2019-07-15 23:44:26 +03:00
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vao := u32(0)
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C.glGenVertexArrays(1, &vao)
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2019-08-23 00:00:31 +03:00
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return vao
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2019-06-22 22:24:49 +03:00
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}
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pub fn enable_vertex_attrib_array(n int) {
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C.glEnableVertexAttribArray(n)
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}
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pub fn gen_buffer() u32 {
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2019-07-15 23:44:26 +03:00
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vbo := u32(0)
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C.glGenBuffers(1, &vbo)
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return vbo
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2019-06-22 22:24:49 +03:00
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}
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2019-08-23 00:00:31 +03:00
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pub fn vertex_attrib_pointer(index, size int, typ int, normalized bool, _stride int, _ptr int) {
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mut stride := _stride
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mut ptr := _ptr
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if typ == C.GL_FLOAT {
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2019-06-25 22:36:44 +03:00
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stride *= sizeof(f32)
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ptr *= sizeof(f32)
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2019-06-22 22:24:49 +03:00
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}
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C.glVertexAttribPointer(index, size, typ, normalized, stride, ptr)
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}
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pub fn tex_param(key, val int) {
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C.glTexParameteri(C.GL_TEXTURE_2D, key, val)
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2019-06-22 22:24:49 +03:00
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}
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pub fn enable(val int) {
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C.glEnable(val)
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}
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pub fn disable(val int) {
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C.glDisable(val)
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}
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pub fn scissor(a, b, c, d int) {
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C.glScissor(a, b, c, d)
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}
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pub fn generate_mipmap(typ int) {
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C.glGenerateMipmap(typ)
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}
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