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GrumpyLion revised this gist
Sep 4, 2024 . 1 changed file with 17 additions and 17 deletions.There are no files selected for viewing
This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -88,14 +88,14 @@ main :: proc() { win32.CS_HREDRAW | win32.CS_VREDRAW, WinProc, 0,0, hinst,icon,cursor, nil, nil, win32.L(CLASSNAME), nil, } if error := win32.RegisterClassExW(&window_context); error == 0 { win32.MessageBoxW(nil, win32.L("Unable to Register Window Class"), win32.L("Error"), win32.MB_ICONERROR) return } wglChoosePixelFormatARB : win32.ChoosePixelFormatARBType @@ -109,19 +109,19 @@ main :: proc() { win32.L(CLASSNAME), win32.L(APPNAME), dw_style, win32.CW_USEDEFAULT, win32.CW_USEDEFAULT, win32.CW_USEDEFAULT, win32.CW_USEDEFAULT, nil, nil, hinst, nil, ) if hwnd == nil { win32.MessageBoxW(nil, win32.L("Unable to Create Window"),win32.L("Error"), win32.MB_ICONERROR) return } fake_dc := win32.GetDC(hwnd) if fake_dc == nil { win32.MessageBoxW(nil, win32.L("Unable to Get DC"), win32.L("Error"), win32.MB_ICONERROR) return } @@ -137,23 +137,23 @@ main :: proc() { pixel_format := win32.ChoosePixelFormat(fake_dc, &pfd) if pixel_format == 0 { win32.MessageBoxW(nil, win32.L("Failed to get pixel format"), win32.L("Error"), win32.MB_ICONERROR) return } if !win32.SetPixelFormat(fake_dc, pixel_format, &pfd) { win32.MessageBoxW(nil, win32.L("Failed to set pixel format"), win32.L("Error"), win32.MB_ICONERROR) return } fake_rc := win32.wglCreateContext(fake_dc) if fake_rc == nil { win32.MessageBoxW(nil, win32.L("Failed to create context"), win32.L("Error"), win32.MB_ICONERROR) return } if !win32.wglMakeCurrent(fake_dc, fake_rc) { win32.MessageBoxW(nil, win32.L("Failed to Get Pixel Format"), win32.L("Error"), win32.MB_ICONERROR) return } @@ -187,7 +187,7 @@ main :: proc() { defer win32.DestroyWindow(hwnd) if hwnd == nil { win32.MessageBoxW(nil, win32.L("Unable to Create Window"), win32.L("Error"), win32.MB_ICONERROR) return } @@ -245,10 +245,10 @@ main :: proc() { gl.load_up_to(int(GL_MAJOR_VERSION), GL_MINOR_VERSION, gl_set_proc_address) gl.Enable(gl.DEBUG_OUTPUT) gl.Enable(gl.DEBUG_OUTPUT_SYNCHRONOUS) gl.DebugMessageCallback(gl_debug_callback, nil) gl.Viewport(0, 0, width, height) // shader init @@ -292,8 +292,8 @@ main :: proc() { gl.CreateBuffers(1, &vbo); defer gl.DeleteBuffers(1, &vbo) gl.CreateBuffers(1, &ebo); defer gl.DeleteBuffers(1, &ebo) gl.NamedBufferData(vbo, len(vertices) * size_of(Vertex), raw_data(vertices), gl.STATIC_DRAW) gl.NamedBufferData(ebo, len(indices) * size_of(u16), raw_data(indices), gl.STATIC_DRAW) gl.EnableVertexArrayAttrib(vao, 0) gl.VertexArrayAttribBinding(vao, 0, 0) @@ -309,7 +309,7 @@ main :: proc() { msg : win32.MSG running = true for running { // window handling for win32.PeekMessageA(&msg, hwnd, 0, 0, win32.PM_REMOVE) { win32.TranslateMessage(&msg) win32.DispatchMessageW(&msg) -
Sep 4, 2024 . 1 changed file with 49 additions and 49 deletions.There are no files selected for viewing
This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -17,9 +17,9 @@ vertex_source := ` layout(location=0) in vec3 a_position; layout(location=1) in vec4 a_color; out vec4 v_color; void main() { gl_Position = vec4(a_position, 1.0); v_color = a_color; } ` @@ -28,7 +28,7 @@ fragment_source := ` in vec4 v_color; out vec4 o_color; void main() { o_color = v_color; } ` @@ -37,13 +37,13 @@ running : bool = false // is also available in core/sys/windows/wgl.odin gl_set_proc_address :: proc(p: rawptr, name: cstring) { func := win32.wglGetProcAddress(name) switch uintptr(func) { case 0, 1, 2, 3, ~uintptr(0): module := win32.LoadLibraryW(win32.L("opengl32.dll")) func = win32.GetProcAddress(module, name) } (^rawptr)(p)^ = func } GL_MAJOR_VERSION : c.int : 4 @@ -252,48 +252,48 @@ main :: proc() { // shader init program, program_ok := gl.load_shaders_source(vertex_source, fragment_source) if !program_ok { win32.MessageBoxW(nil,win32.L("Failed to create GLSL program"), win32.L("Error"), win32.MB_ICONERROR) return } defer gl.DeleteProgram(program) gl.UseProgram(program) uniforms := gl.get_uniforms_from_program(program) defer delete(uniforms) // vertex struct Vertex :: struct { pos: glm.vec3, col: glm.vec4, } vertices := []Vertex{ {{-0.5, +0.5, 0}, {1.0, 0.0, 0.0, 0.75}}, {{-0.5, -0.5, 0}, {1.0, 1.0, 0.0, 0.75}}, {{+0.5, -0.5, 0}, {0.0, 1.0, 0.0, 0.75}}, {{+0.5, +0.5, 0}, {0.0, 0.0, 1.0, 0.75}}, } indices := []u16{ 0, 1, 2, 2, 3, 0, } // buffers init vao: u32 gl.CreateVertexArrays(1, &vao); defer gl.DeleteVertexArrays(1, &vao) vbo, ebo: u32 gl.CreateBuffers(1, &vbo); defer gl.DeleteBuffers(1, &vbo) gl.CreateBuffers(1, &ebo); defer gl.DeleteBuffers(1, &ebo) gl.NamedBufferData(vbo, len(vertices)*size_of(Vertex), raw_data(vertices), gl.STATIC_DRAW) gl.NamedBufferData(ebo, len(indices)*size_of(u16), raw_data(indices), gl.STATIC_DRAW) gl.EnableVertexArrayAttrib(vao, 0) gl.VertexArrayAttribBinding(vao, 0, 0) @@ -309,7 +309,7 @@ main :: proc() { msg : win32.MSG running = true for running { // windows handling for win32.PeekMessageA(&msg, hwnd, 0, 0, win32.PM_REMOVE) { win32.TranslateMessage(&msg) win32.DispatchMessageW(&msg) @@ -320,7 +320,7 @@ main :: proc() { gl.ClearColor(0.5, 0.5, 0.5, 1.0) gl.BindVertexArray(vao) gl.UseProgram(program) gl.DrawElements(gl.TRIANGLES, i32(len(indices)), gl.UNSIGNED_SHORT, nil) win32.SwapBuffers(dc) } -
Sep 4, 2024 .There are no files selected for viewing
This file contains hidden or 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 charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,327 @@ package main // This is how you can manually initialize a window and OpenGL context on windows, instead of using SDL or GLFW. // Also renders a colorful quad onto the screen. // I made this as an exercise and getting into Odin. // This is my first "complete" odin program, so there's probably much better ways of doing this :D import "base:runtime" import "core:fmt" import "core:c" import win32 "core:sys/windows" import glm "core:math/linalg/glsl" import gl "vendor:OpenGL" vertex_source := ` #version 330 core layout(location=0) in vec3 a_position; layout(location=1) in vec4 a_color; out vec4 v_color; void main() { gl_Position = vec4(a_position, 1.0); v_color = a_color; } ` fragment_source := ` #version 330 core in vec4 v_color; out vec4 o_color; void main() { o_color = v_color; } ` wglSwapIntervalEXT : win32.SwapIntervalEXTType running : bool = false // is also available in core/sys/windows/wgl.odin gl_set_proc_address :: proc(p: rawptr, name: cstring) { func := win32.wglGetProcAddress(name) switch uintptr(func) { case 0, 1, 2, 3, ~uintptr(0): module := win32.LoadLibraryW(win32.L("opengl32.dll")) func = win32.GetProcAddress(module, name) } (^rawptr)(p)^ = func } GL_MAJOR_VERSION : c.int : 4 GL_MINOR_VERSION :: 6 CLASSNAME : cstring : "OpenGLClass" APPNAME : cstring : "OpenGL" WinProc :: proc "stdcall" ( window: win32.HWND, message: win32.UINT, wparam: win32.WPARAM, lparam: win32.LPARAM ) -> win32.LRESULT { result: win32.LRESULT switch message { case win32.WM_DESTROY: win32.DestroyWindow(window) win32.PostQuitMessage(0) running = false result = 0 case: result = win32.DefWindowProcW( window, message, wparam, lparam) } return result } gl_debug_callback :: proc "c" (source: u32, type: u32, id: u32, severity: u32, length: i32, message: cstring, userParam: rawptr) { context = runtime.default_context() fmt.println(message) } main :: proc() { hinst : win32.HANDLE = auto_cast win32.GetModuleHandleW(nil) icon := win32.LoadIconA(nil, win32.IDI_APPLICATION) cursor := win32.LoadCursorA(nil, win32.IDC_ARROW) window_context := win32.WNDCLASSEXW { size_of(win32.WNDCLASSEXW), win32.CS_HREDRAW | win32.CS_VREDRAW, WinProc, 0,0, hinst,icon,cursor,nil,nil, win32.L(CLASSNAME), nil, } if error := win32.RegisterClassExW(&window_context); error == 0 { win32.MessageBoxW(nil,win32.L("Unable to Register Window Class"), win32.L("Error"), win32.MB_ICONERROR) return; } wglChoosePixelFormatARB : win32.ChoosePixelFormatARBType wglCreateContextAttribsARB : win32.CreateContextAttribsARBType dw_style := win32.WS_OVERLAPPEDWINDOW // fake window and context for acquiring functions pointers hwnd := win32.CreateWindowExW( win32.WS_EX_OVERLAPPEDWINDOW, win32.L(CLASSNAME), win32.L(APPNAME), dw_style, win32.CW_USEDEFAULT,win32.CW_USEDEFAULT,win32.CW_USEDEFAULT,win32.CW_USEDEFAULT, nil,nil,hinst,nil, ) if hwnd == nil { win32.MessageBoxW(nil,win32.L("Unable to Create Window"),win32.L("Error"), win32.MB_ICONERROR) return } fake_dc := win32.GetDC(hwnd) if fake_dc == nil { win32.MessageBoxW(nil,win32.L("Unable to Get DC"), win32.L("Error"), win32.MB_ICONERROR) return } pfd := win32.PIXELFORMATDESCRIPTOR{ nSize = size_of(win32.PIXELFORMATDESCRIPTOR), nVersion = 1, dwFlags = win32.PFD_DRAW_TO_WINDOW | win32.PFD_SUPPORT_OPENGL | win32.PFD_DOUBLEBUFFER, iPixelType = win32.PFD_TYPE_RGBA, cColorBits = 32, cAlphaBits = 8, cDepthBits = 24 } pixel_format := win32.ChoosePixelFormat(fake_dc, &pfd) if pixel_format == 0 { win32.MessageBoxW(nil,win32.L("Failed to get pixel format"), win32.L("Error"), win32.MB_ICONERROR) return } if !win32.SetPixelFormat(fake_dc, pixel_format, &pfd) { win32.MessageBoxW(nil,win32.L("Failed to set pixel format"), win32.L("Error"), win32.MB_ICONERROR) return } fake_rc := win32.wglCreateContext(fake_dc) if fake_rc == nil { win32.MessageBoxW(nil,win32.L("Failed to create context"), win32.L("Error"), win32.MB_ICONERROR) return } if !win32.wglMakeCurrent(fake_dc, fake_rc) { win32.MessageBoxW(nil,win32.L("Failed to Get Pixel Format"), win32.L("Error"), win32.MB_ICONERROR) return } gl_set_proc_address(&wglChoosePixelFormatARB, "wglChoosePixelFormatARB") gl_set_proc_address(&wglCreateContextAttribsARB, "wglCreateContextAttribsARB") gl_set_proc_address(&wglSwapIntervalEXT, "wglSwapIntervalEXT") win32.wglMakeCurrent(fake_dc, nil) win32.wglDeleteContext(fake_rc) win32.ReleaseDC(hwnd, fake_dc) win32.DestroyWindow(hwnd) // actual window and context creation width : i32 = 1024 height : i32 = 600 border_rect : win32.RECT = {} win32.AdjustWindowRectEx(&border_rect, dw_style, false, 0) width += border_rect.right - border_rect.left height += border_rect.bottom - border_rect.top hwnd = win32.CreateWindowExW( win32.WS_EX_OVERLAPPEDWINDOW, win32.L(CLASSNAME), win32.L(APPNAME), dw_style, 100, 100, width, height, nil,nil,hinst,nil, ) defer win32.DestroyWindow(hwnd) if hwnd == nil { win32.MessageBoxW(nil,win32.L("Unable to Create Window"), win32.L("Error"), win32.MB_ICONERROR) return } dc := win32.GetDC(hwnd) defer win32.ReleaseDC(hwnd, dc) pixel_attribs : []i32 = { win32.WGL_DRAW_TO_WINDOW_ARB, 1, win32.WGL_SUPPORT_OPENGL_ARB, 1, win32.WGL_DOUBLE_BUFFER_ARB, 1, win32.WGL_SWAP_METHOD_ARB, win32.WGL_SWAP_COPY_ARB, win32.WGL_PIXEL_TYPE_ARB, win32.WGL_TYPE_RGBA_ARB, win32.WGL_ACCELERATION_ARB, win32.WGL_FULL_ACCELERATION_ARB, win32.WGL_COLOR_BITS_ARB, 32, win32.WGL_ALPHA_BITS_ARB, 8, win32.WGL_DEPTH_BITS_ARB, 24, 0 } pixel_format = 0 num_pixel_formats : win32.UINT32 = 0 if !wglChoosePixelFormatARB(dc, raw_data(pixel_attribs), nil, 1, &pixel_format, &num_pixel_formats) { win32.MessageBoxW(nil,win32.L("Failed to choose a pixel format"), win32.L("Error"), win32.MB_ICONERROR) return } pixel_format_descriptor : win32.PIXELFORMATDESCRIPTOR win32.DescribePixelFormat(dc, pixel_format, size_of(win32.PIXELFORMATDESCRIPTOR), &pixel_format_descriptor) if !win32.SetPixelFormat(dc, pixel_format, &pixel_format_descriptor) { win32.MessageBoxW(nil,win32.L("Unable to set pixle format"), win32.L("Error"), win32.MB_ICONERROR) return } context_attribs : []i32 = { win32.WGL_CONTEXT_MAJOR_VERSION_ARB, GL_MAJOR_VERSION, win32.WGL_CONTEXT_MINOR_VERSION_ARB, GL_MINOR_VERSION, win32.WGL_CONTEXT_PROFILE_MASK_ARB, win32.WGL_CONTEXT_CORE_PROFILE_BIT_ARB, win32.WGL_CONTEXT_FLAGS_ARB, win32.WGL_CONTEXT_DEBUG_BIT_ARB, 0 } render_context := wglCreateContextAttribsARB(dc, nil, raw_data(context_attribs)) defer win32.wglDeleteContext(render_context) if !win32.wglMakeCurrent(dc, render_context) { win32.MessageBoxW(nil,win32.L("Failed to make the current context"), win32.L("Error"), win32.MB_ICONERROR) return } defer win32.wglMakeCurrent(dc, nil) win32.ShowWindow(hwnd, win32.SW_SHOWNORMAL) // opengl init gl.load_up_to(int(GL_MAJOR_VERSION), GL_MINOR_VERSION, gl_set_proc_address) gl.Enable(gl.DEBUG_OUTPUT); gl.Enable(gl.DEBUG_OUTPUT_SYNCHRONOUS) gl.DebugMessageCallback(gl_debug_callback, nil) gl.Viewport(0, 0, width, height); // shader init program, program_ok := gl.load_shaders_source(vertex_source, fragment_source) if !program_ok { win32.MessageBoxW(nil,win32.L("Failed to create GLSL program"), win32.L("Error"), win32.MB_ICONERROR) return } defer gl.DeleteProgram(program) gl.UseProgram(program) uniforms := gl.get_uniforms_from_program(program) defer delete(uniforms) // vertex struct Vertex :: struct { pos: glm.vec3, col: glm.vec4, } vertices := []Vertex{ {{-0.5, +0.5, 0}, {1.0, 0.0, 0.0, 0.75}}, {{-0.5, -0.5, 0}, {1.0, 1.0, 0.0, 0.75}}, {{+0.5, -0.5, 0}, {0.0, 1.0, 0.0, 0.75}}, {{+0.5, +0.5, 0}, {0.0, 0.0, 1.0, 0.75}}, } indices := []u16{ 0, 1, 2, 2, 3, 0, } // buffers init vao: u32 gl.CreateVertexArrays(1, &vao); defer gl.DeleteVertexArrays(1, &vao) vbo, ebo: u32 gl.CreateBuffers(1, &vbo); defer gl.DeleteBuffers(1, &vbo) gl.CreateBuffers(1, &ebo); defer gl.DeleteBuffers(1, &ebo) gl.NamedBufferData(vbo, len(vertices)*size_of(Vertex), raw_data(vertices), gl.STATIC_DRAW) gl.NamedBufferData(ebo, len(indices)*size_of(u16), raw_data(indices), gl.STATIC_DRAW) gl.EnableVertexArrayAttrib(vao, 0) gl.VertexArrayAttribBinding(vao, 0, 0) gl.VertexArrayAttribFormat(vao, 0, 3, gl.FLOAT, false, 0) gl.EnableVertexArrayAttrib(vao, 1) gl.VertexArrayAttribBinding(vao, 1, 0) gl.VertexArrayAttribFormat(vao, 1, 4, gl.FLOAT, false, 3 * size_of(f32)) gl.VertexArrayVertexBuffer(vao, 0, vbo, 0, size_of(Vertex)) gl.VertexArrayElementBuffer(vao, ebo) msg : win32.MSG running = true for running { // window handling for win32.PeekMessageA(&msg, hwnd, 0, 0, win32.PM_REMOVE) { win32.TranslateMessage(&msg) win32.DispatchMessageW(&msg) } // draw gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) gl.ClearColor(0.5, 0.5, 0.5, 1.0) gl.BindVertexArray(vao) gl.UseProgram(program) gl.DrawElements(gl.TRIANGLES, i32(len(indices)), gl.UNSIGNED_SHORT, nil) win32.SwapBuffers(dc) } }