-
Notifications
You must be signed in to change notification settings - Fork 115
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
fa00b63
commit 052895c
Showing
12 changed files
with
585 additions
and
70 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
File renamed without changes.
File renamed without changes.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,186 @@ | ||
| // Copyright 2013 The gl-rs developers. For a full listing of the authors, | ||
| // refer to the AUTHORS file at the top-level directory of this distribution. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #![feature(globs)] | ||
| #![feature(phase)] | ||
|
|
||
| #[phase(plugin)] | ||
| extern crate gl_generator; | ||
| extern crate glfw; | ||
| extern crate native; | ||
| extern crate libc; | ||
|
|
||
| use glfw::Context; | ||
| use std::mem; | ||
| use std::ptr; | ||
| use std::str; | ||
|
|
||
| use self::gl::Gl; | ||
| use self::gl::types::*; | ||
|
|
||
| #[allow(non_camel_case_types)] | ||
| #[allow(non_snake_case_functions)] | ||
| pub mod gl { | ||
| use super::libc; | ||
| use std::mem; | ||
| use self::types::*; | ||
| generate_gl_bindings!("gl", "gl", "core", "3.2", "struct") | ||
| } | ||
|
|
||
| // Vertex data | ||
| static VERTEX_DATA: [GLfloat, ..6] = [ | ||
| 0.0, 0.5, | ||
| 0.5, -0.5, | ||
| -0.5, -0.5 | ||
| ]; | ||
|
|
||
| // Shader sources | ||
| static VS_SRC: &'static str = | ||
| "#version 150\n\ | ||
| in vec2 position;\n\ | ||
| void main() {\n\ | ||
| gl_Position = vec4(position, 0.0, 1.0);\n\ | ||
| }"; | ||
|
|
||
| static FS_SRC: &'static str = | ||
| "#version 150\n\ | ||
| out vec4 out_color;\n\ | ||
| void main() {\n\ | ||
| out_color = vec4(1.0, 1.0, 1.0, 1.0);\n\ | ||
| }"; | ||
|
|
||
| #[start] | ||
| fn start(argc: int, argv: *const *const u8) -> int { | ||
| native::start(argc, argv, main) | ||
| } | ||
|
|
||
| fn compile_shader(gl: &Gl, src: &str, ty: GLenum) -> GLuint { | ||
| let shader = gl.CreateShader(ty); | ||
| unsafe { | ||
| // Attempt to compile the shader | ||
| src.with_c_str(|ptr| gl.ShaderSource(shader, 1, &ptr, ptr::null())); | ||
| gl.CompileShader(shader); | ||
|
|
||
| // Get the compile status | ||
| let mut status = gl::FALSE as GLint; | ||
| gl.GetShaderiv(shader, gl::COMPILE_STATUS, &mut status); | ||
|
|
||
| // Fail on error | ||
| if status != (gl::TRUE as GLint) { | ||
| let mut len = 0; | ||
| gl.GetShaderiv(shader, gl::INFO_LOG_LENGTH, &mut len); | ||
| let mut buf = Vec::from_elem(len as uint - 1, 0u8); // subtract 1 to skip the trailing null character | ||
| gl.GetShaderInfoLog(shader, len, ptr::mut_null(), buf.as_mut_ptr() as *mut GLchar); | ||
| fail!("{}", str::from_utf8(buf.as_slice()).expect("ShaderInfoLog not valid utf8")); | ||
| } | ||
| } | ||
| shader | ||
| } | ||
|
|
||
| fn link_program(gl: &Gl, vs: GLuint, fs: GLuint) -> GLuint { | ||
| let program = gl.CreateProgram(); | ||
| gl.AttachShader(program, vs); | ||
| gl.AttachShader(program, fs); | ||
| gl.LinkProgram(program); | ||
| unsafe { | ||
| // Get the link status | ||
| let mut status = gl::FALSE as GLint; | ||
| gl.GetProgramiv(program, gl::LINK_STATUS, &mut status); | ||
|
|
||
| // Fail on error | ||
| if status != (gl::TRUE as GLint) { | ||
| let mut len: GLint = 0; | ||
| gl.GetProgramiv(program, gl::INFO_LOG_LENGTH, &mut len); | ||
| let mut buf = Vec::from_elem(len as uint - 1, 0u8); // subtract 1 to skip the trailing null character | ||
| gl.GetProgramInfoLog(program, len, ptr::mut_null(), buf.as_mut_ptr() as *mut GLchar); | ||
| fail!("{}", str::from_utf8(buf.as_slice()).expect("ProgramInfoLog not valid utf8")); | ||
| } | ||
| } | ||
| program | ||
| } | ||
|
|
||
| fn main() { | ||
| let glfw = glfw::init(glfw::FAIL_ON_ERRORS).unwrap(); | ||
|
|
||
| // Choose a GL profile that is compatible with OS X 10.7+ | ||
| glfw.window_hint(glfw::ContextVersion(3, 2)); | ||
| glfw.window_hint(glfw::OpenglForwardCompat(true)); | ||
| glfw.window_hint(glfw::OpenglProfile(glfw::OpenGlCoreProfile)); | ||
|
|
||
| let (window, _) = glfw.create_window(800, 600, "OpenGL", glfw::Windowed) | ||
| .expect("Failed to create GLFW window."); | ||
|
|
||
| // It is essential to make the context current before calling `gl::load_with`. | ||
| window.make_current(); | ||
|
|
||
| // Load the OpenGL function pointers | ||
| let gl = Gl::load_with(|s| glfw.get_proc_address(s)); | ||
|
|
||
| // Create GLSL shaders | ||
| let vs = compile_shader(&gl, VS_SRC, gl::VERTEX_SHADER); | ||
| let fs = compile_shader(&gl, FS_SRC, gl::FRAGMENT_SHADER); | ||
| let program = link_program(&gl, vs, fs); | ||
|
|
||
| let mut vao = 0; | ||
| let mut vbo = 0; | ||
|
|
||
| unsafe { | ||
| // Create Vertex Array Object | ||
| gl.GenVertexArrays(1, &mut vao); | ||
| gl.BindVertexArray(vao); | ||
|
|
||
| // Create a Vertex Buffer Object and copy the vertex data to it | ||
| gl.GenBuffers(1, &mut vbo); | ||
| gl.BindBuffer(gl::ARRAY_BUFFER, vbo); | ||
| gl.BufferData(gl::ARRAY_BUFFER, | ||
| (VERTEX_DATA.len() * mem::size_of::<GLfloat>()) as GLsizeiptr, | ||
| mem::transmute(&VERTEX_DATA[0]), | ||
| gl::STATIC_DRAW); | ||
|
|
||
| // Use shader program | ||
| gl::UseProgram(program); | ||
| "out_color".with_c_str(|ptr| gl.BindFragDataLocation(program, 0, ptr)); | ||
|
|
||
| // Specify the layout of the vertex data | ||
| let pos_attr = "position".with_c_str(|ptr| gl.GetAttribLocation(program, ptr)); | ||
| gl.EnableVertexAttribArray(pos_attr as GLuint); | ||
| gl.VertexAttribPointer(pos_attr as GLuint, 2, gl::FLOAT, | ||
| gl::FALSE as GLboolean, 0, ptr::null()); | ||
| } | ||
|
|
||
| while !window.should_close() { | ||
| // Poll events | ||
| glfw.poll_events(); | ||
|
|
||
| // Clear the screen to black | ||
| gl.ClearColor(0.3, 0.3, 0.3, 1.0); | ||
| gl.Clear(gl::COLOR_BUFFER_BIT); | ||
|
|
||
| // Draw a triangle from the 3 vertices | ||
| gl.DrawArrays(gl::TRIANGLES, 0, 3); | ||
|
|
||
| // Swap buffers | ||
| window.swap_buffers(); | ||
| } | ||
|
|
||
| // Cleanup | ||
| gl.DeleteProgram(program); | ||
| gl.DeleteShader(fs); | ||
| gl.DeleteShader(vs); | ||
| unsafe { | ||
| gl.DeleteBuffers(1, &vbo); | ||
| gl.DeleteVertexArrays(1, &vao); | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.