diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/Makefile | 1 | ||||
| -rw-r--r-- | examples/text/resources/AnonymousPro-Bold.ttf | bin | 0 -> 153616 bytes | |||
| -rw-r--r-- | examples/text/resources/AnonymousPro_OFL.txt | 94 | ||||
| -rw-r--r-- | examples/text/resources/shaders/sdf.fs | 26 | ||||
| -rw-r--r-- | examples/text/text_font_sdf.c | 123 | ||||
| -rw-r--r-- | examples/text/text_font_sdf.png | bin | 0 -> 52071 bytes |
6 files changed, 244 insertions, 0 deletions
diff --git a/examples/Makefile b/examples/Makefile index 2e42fb05..e62d6980 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -390,6 +390,7 @@ EXAMPLES = \ text/text_ttf_loading \ text/text_bmfont_unordered \ text/text_input_box \ + text/text_font_sdf \ models/models_geometric_shapes \ models/models_box_collisions \ models/models_billboard \ diff --git a/examples/text/resources/AnonymousPro-Bold.ttf b/examples/text/resources/AnonymousPro-Bold.ttf Binary files differnew file mode 100644 index 00000000..badb0aad --- /dev/null +++ b/examples/text/resources/AnonymousPro-Bold.ttf diff --git a/examples/text/resources/AnonymousPro_OFL.txt b/examples/text/resources/AnonymousPro_OFL.txt new file mode 100644 index 00000000..5ca1911b --- /dev/null +++ b/examples/text/resources/AnonymousPro_OFL.txt @@ -0,0 +1,94 @@ +Copyright (c) 2009, Mark Simonson (http://www.ms-studio.com, mark@marksimonson.com), +with Reserved Font Name Anonymous Pro. + +This Font Software is licensed under the SIL Open Font License, Version 1.1. +This license is copied below, and is also available with a FAQ at: +http://scripts.sil.org/OFL + + +----------------------------------------------------------- +SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007 +----------------------------------------------------------- + +PREAMBLE +The goals of the Open Font License (OFL) are to stimulate worldwide +development of collaborative font projects, to support the font creation +efforts of academic and linguistic communities, and to provide a free and +open framework in which fonts may be shared and improved in partnership +with others. + +The OFL allows the licensed fonts to be used, studied, modified and +redistributed freely as long as they are not sold by themselves. The +fonts, including any derivative works, can be bundled, embedded, +redistributed and/or sold with any software provided that any reserved +names are not used by derivative works. The fonts and derivatives, +however, cannot be released under any other type of license. The +requirement for fonts to remain under this license does not apply +to any document created using the fonts or their derivatives. + +DEFINITIONS +"Font Software" refers to the set of files released by the Copyright +Holder(s) under this license and clearly marked as such. This may +include source files, build scripts and documentation. + +"Reserved Font Name" refers to any names specified as such after the +copyright statement(s). + +"Original Version" refers to the collection of Font Software components as +distributed by the Copyright Holder(s). + +"Modified Version" refers to any derivative made by adding to, deleting, +or substituting -- in part or in whole -- any of the components of the +Original Version, by changing formats or by porting the Font Software to a +new environment. + +"Author" refers to any designer, engineer, programmer, technical +writer or other person who contributed to the Font Software. + +PERMISSION & CONDITIONS +Permission is hereby granted, free of charge, to any person obtaining +a copy of the Font Software, to use, study, copy, merge, embed, modify, +redistribute, and sell modified and unmodified copies of the Font +Software, subject to the following conditions: + +1) Neither the Font Software nor any of its individual components, +in Original or Modified Versions, may be sold by itself. + +2) Original or Modified Versions of the Font Software may be bundled, +redistributed and/or sold with any software, provided that each copy +contains the above copyright notice and this license. These can be +included either as stand-alone text files, human-readable headers or +in the appropriate machine-readable metadata fields within text or +binary files as long as those fields can be easily viewed by the user. + +3) No Modified Version of the Font Software may use the Reserved Font +Name(s) unless explicit written permission is granted by the corresponding +Copyright Holder. This restriction only applies to the primary font name as +presented to the users. + +4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font +Software shall not be used to promote, endorse or advertise any +Modified Version, except to acknowledge the contribution(s) of the +Copyright Holder(s) and the Author(s) or with their explicit written +permission. + +5) The Font Software, modified or unmodified, in part or in whole, +must be distributed entirely under this license, and must not be +distributed under any other license. The requirement for fonts to +remain under this license does not apply to any document created +using the Font Software. + +TERMINATION +This license becomes null and void if any of the above conditions are +not met. + +DISCLAIMER +THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT +OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE +COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL +DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM +OTHER DEALINGS IN THE FONT SOFTWARE. diff --git a/examples/text/resources/shaders/sdf.fs b/examples/text/resources/shaders/sdf.fs new file mode 100644 index 00000000..44d33e9b --- /dev/null +++ b/examples/text/resources/shaders/sdf.fs @@ -0,0 +1,26 @@ +#version 330 + +// Input vertex attributes (from vertex shader) +in vec2 fragTexCoord; +in vec4 fragColor; + +// Input uniform values +uniform sampler2D texture0; +uniform vec4 colDiffuse; + +// Output fragment color +out vec4 finalColor; + +// NOTE: Add here your custom variables +const float smoothing = 1.0/16.0; + +void main() +{ + // Texel color fetching from texture sampler + // NOTE: Calculate alpha using signed distance field (SDF) + float distance = texture(texture0, fragTexCoord).a; + float alpha = smoothstep(0.5 - smoothing, 0.5 + smoothing, distance); + + // Calculate final fragment color + finalColor = vec4(fragColor.rgb, fragColor.a*alpha); +} diff --git a/examples/text/text_font_sdf.c b/examples/text/text_font_sdf.c new file mode 100644 index 00000000..5f7ad5fa --- /dev/null +++ b/examples/text/text_font_sdf.c @@ -0,0 +1,123 @@ +/******************************************************************************************* +* +* raylib [text] example - TTF loading and usage +* +* This example has been created using raylib 1.3.0 (www.raylib.com) +* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) +* +* Copyright (c) 2015 Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#include "raylib.h" + +int main() +{ + // Initialization + //-------------------------------------------------------------------------------------- + int screenWidth = 800; + int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [text] example - SDF fonts"); + + // NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required) + + const char msg[50] = "Signed Distance Fields"; + + // Default font generation from TTF font + Font fontDefault = { 0 }; + fontDefault.baseSize = 16; + fontDefault.charsCount = 95; + // Parameters > font size: 16, no chars array provided (0), chars count: 95 (autogenerate chars array) + fontDefault.chars = LoadFontData("resources/AnonymousPro-Bold.ttf", 16, 0, 95, false); + // Parameters > chars count: 95, font size: 16, chars padding in image: 4 px, pack method: 0 (default) + Image atlas = GenImageFontAtlas(fontDefault.chars, 95, 16, 4, 0); + fontDefault.texture = LoadTextureFromImage(atlas); + UnloadImage(atlas); + + // SDF font generation from TTF font + // NOTE: SDF chars data is generated with LoadFontData(), it's just a bool option + Font fontSDF = { 0 }; + fontSDF.baseSize = 16; + fontSDF.charsCount = 95; + // Parameters > font size: 16, no chars array provided (0), chars count: 0 (defaults to 95) + fontSDF.chars = LoadFontData("resources/AnonymousPro-Bold.ttf", 16, 0, 0, true); + // Parameters > chars count: 95, font size: 16, chars padding in image: 0 px, pack method: 1 (Skyline algorythm) + atlas = GenImageFontAtlas(fontSDF.chars, 95, 16, 0, 1); + fontSDF.texture = LoadTextureFromImage(atlas); + UnloadImage(atlas); + + // Load SDF required shader (we use default vertex shader) + Shader shader = LoadShader(0, "resources/shaders/sdf.fs"); + SetTextureFilter(fontSDF.texture, FILTER_BILINEAR); // Required for SDF font + + Vector2 fontPosition = { 40, screenHeight/2 - 50 }; + Vector2 textSize = { 0.0f }; + float fontSize = 16.0f; + int currentFont = 0; // 0 - fontDefault, 1 - fontSDF + + SetTargetFPS(60); + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + fontSize += GetMouseWheelMove()*8.0f; + + if (fontSize < 6) fontSize = 6; + + if (IsKeyDown(KEY_SPACE)) currentFont = 1; + else currentFont = 0; + + if (currentFont == 0) textSize = MeasureTextEx(fontDefault, msg, fontSize, 0); + else textSize = MeasureTextEx(fontSDF, msg, fontSize, 0); + + fontPosition.x = GetScreenWidth()/2 - textSize.x/2; + fontPosition.y = GetScreenHeight()/2 - textSize.y/2 + 80; + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + if (currentFont == 1) + { + // NOTE: SDF fonts require a custom SDf shader to compute fragment color + BeginShaderMode(shader); // Activate SDF font shader + DrawTextEx(fontSDF, msg, fontPosition, fontSize, 0, BLACK); + EndShaderMode(); // Activate our default shader for next drawings + + DrawTexture(fontSDF.texture, 10, 10, BLACK); + } + else + { + DrawTextEx(fontDefault, msg, fontPosition, fontSize, 0, BLACK); + DrawTexture(fontDefault.texture, 10, 10, BLACK); + } + + DrawText("FONT SIZE: 16.0", GetScreenWidth() - 240, 20, 20, DARKGRAY); + DrawText(FormatText("RENDER SIZE: %02.02f", fontSize), GetScreenWidth() - 240, 50, 20, DARKGRAY); + DrawText("Use MOUSE WHEEL to SCALE TEXT!", GetScreenWidth() - 240, 90, 10, DARKGRAY); + + DrawText("PRESS SPACE to USE SDF FONT VERSION!", 340, GetScreenHeight() - 30, 20, MAROON); + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadFont(fontDefault); // Default font unloading + UnloadFont(fontSDF); // SDF font unloading + + UnloadShader(shader); // Unload SDF shader + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
\ No newline at end of file diff --git a/examples/text/text_font_sdf.png b/examples/text/text_font_sdf.png Binary files differnew file mode 100644 index 00000000..74916b1a --- /dev/null +++ b/examples/text/text_font_sdf.png |
