mirror of https://github.com/raysan5/raylib
101 lines
4.1 KiB
Lua
101 lines
4.1 KiB
Lua
-------------------------------------------------------------------------------------------
|
|
--
|
|
-- raylib [shaders] example - Apply a shader to some shape or texture
|
|
--
|
|
-- NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
|
|
-- OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
|
|
--
|
|
-- NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example
|
|
-- on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders
|
|
-- raylib comes with shaders ready for both versions, check raylib/shaders install folder
|
|
--
|
|
-- This example has been created using raylib 1.6 (www.raylib.com)
|
|
-- raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
|
|
--
|
|
-- Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
|
|
--
|
|
-------------------------------------------------------------------------------------------
|
|
|
|
-- Initialization
|
|
-------------------------------------------------------------------------------------------
|
|
local screenWidth = 800
|
|
local screenHeight = 450
|
|
|
|
InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shapes and texture shaders")
|
|
|
|
local sonic = LoadTexture("resources/texture_formats/sonic.png")
|
|
|
|
-- NOTE: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version
|
|
local shader = LoadShader("resources/shaders/glsl330/base.vs",
|
|
"resources/shaders/glsl330/grayscale.fs")
|
|
|
|
-- Shader usage is also different than models/postprocessing, shader is just activated when required
|
|
|
|
SetTargetFPS(60) -- Set our game to run at 60 frames-per-second
|
|
-------------------------------------------------------------------------------------------
|
|
|
|
-- Main game loop
|
|
while not WindowShouldClose() do -- Detect window close button or ESC key
|
|
-- Update
|
|
---------------------------------------------------------------------------------------
|
|
-- TODO: Update your variables here
|
|
---------------------------------------------------------------------------------------
|
|
|
|
-- Draw
|
|
---------------------------------------------------------------------------------------
|
|
BeginDrawing()
|
|
|
|
ClearBackground(RAYWHITE)
|
|
|
|
-- Start drawing with default shader
|
|
|
|
DrawText("USING DEFAULT SHADER", 20, 40, 10, RED)
|
|
|
|
DrawCircle(80, 120, 35, DARKBLUE)
|
|
DrawCircleGradient(80, 220, 60, GREEN, SKYBLUE)
|
|
DrawCircleLines(80, 340, 80, DARKBLUE)
|
|
|
|
|
|
-- Activate our custom shader to be applied on next shapes/textures drawings
|
|
BeginShaderMode(shader)
|
|
|
|
DrawText("USING CUSTOM SHADER", 190, 40, 10, RED)
|
|
|
|
DrawRectangle(250 - 60, 90, 120, 60, RED)
|
|
DrawRectangleGradient(250 - 90, 170, 180, 130, MAROON, GOLD)
|
|
DrawRectangleLines(250 - 40, 320, 80, 60, ORANGE)
|
|
|
|
-- Activate our default shader for next drawings
|
|
EndShaderMode()
|
|
|
|
DrawText("USING DEFAULT SHADER", 370, 40, 10, RED)
|
|
|
|
DrawTriangle(Vector2(430, 80),
|
|
Vector2(430 - 60, 150),
|
|
Vector2(430 + 60, 150), VIOLET)
|
|
|
|
DrawTriangleLines(Vector2(430, 160),
|
|
Vector2(430 - 20, 230),
|
|
Vector2(430 + 20, 230), DARKBLUE)
|
|
|
|
DrawPoly(Vector2(430, 320), 6, 80, 0, BROWN)
|
|
|
|
-- Activate our custom shader to be applied on next shapes/textures drawings
|
|
BeginShaderMode(shader)
|
|
|
|
DrawTexture(sonic, 380, -10, WHITE) -- Using custom shader
|
|
|
|
-- Activate our default shader for next drawings
|
|
EndShaderMode()
|
|
|
|
EndDrawing()
|
|
---------------------------------------------------------------------------------------
|
|
end
|
|
|
|
-- De-Initialization
|
|
-------------------------------------------------------------------------------------------
|
|
UnloadShader(shader) -- Unload shader
|
|
UnloadTexture(sonic) -- Unload texture
|
|
|
|
CloseWindow() -- Close window and OpenGL context
|
|
------------------------------------------------------------------------------------------- |