From 6e4fdd3b3ae4e4656e151f098c40cfe551a36e8c Mon Sep 17 00:00:00 2001
From: jussi
Date: Fri, 18 Feb 2022 18:27:10 +0200
Subject: Added initial files.

---
 examples/shaders/main.lua | 60 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 examples/shaders/main.lua

(limited to 'examples/shaders/main.lua')

diff --git a/examples/shaders/main.lua b/examples/shaders/main.lua
new file mode 100644
index 0000000..eea9344
--- /dev/null
+++ b/examples/shaders/main.lua
@@ -0,0 +1,60 @@
+local monitor = 0
+local shader = -1
+local texture = -1
+local textureSize
+
+local GLSL_VERSION = "330" -- PLATFORM_DESKTOP
+-- local GLSL_VERSION = "100" -- PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+
+local secondsLoc
+
+function init()
+	local mPos = RL_GetMonitorPosition( monitor )
+	local mSize = RL_GetMonitorSize( monitor )
+	local winSize = RL_GetWindowSize()
+
+	RL_SetWindowState( FLAG_WINDOW_RESIZABLE )
+	RL_SetWindowPosition( { mPos[1] + mSize[1] / 2 - winSize[1] / 2, mPos[2] + mSize[2] / 2 - winSize[2] / 2 } )
+
+	texture = RL_LoadTexture( RL_GetBasePath().."../resources/images/cat.png" )
+	textureSize = RL_GetTextureSize( texture )
+	shader = RL_LoadShader( nil, RL_GetBasePath().."../resources/shaders/glsl"..GLSL_VERSION.."/wave.fs" )
+
+	secondsLoc = RL_GetShaderLocation( shader, "secondes" )
+	local sizeLoc = RL_GetShaderLocation( shader, "size" )
+    local freqXLoc = RL_GetShaderLocation( shader, "freqX" )
+    local freqYLoc = RL_GetShaderLocation( shader, "freqY" )
+    local ampXLoc = RL_GetShaderLocation( shader, "ampX" )
+    local ampYLoc = RL_GetShaderLocation( shader, "ampY" )
+    local speedXLoc = RL_GetShaderLocation( shader, "speedX" )
+    local speedYLoc = RL_GetShaderLocation( shader, "speedY" )
+
+	local freqX = 25.0
+    local freqY = 25.0
+    local ampX = 5.0
+    local ampY = 5.0
+    local speedX = 8.0
+    local speedY = 8.0
+
+    RL_SetShaderValue( shader, sizeLoc, textureSize, SHADER_UNIFORM_VEC2 )
+    RL_SetShaderValue( shader, freqXLoc, { freqX }, SHADER_UNIFORM_FLOAT )
+    RL_SetShaderValue( shader, freqYLoc, { freqY }, SHADER_UNIFORM_FLOAT )
+    RL_SetShaderValue( shader, ampXLoc, { ampX }, SHADER_UNIFORM_FLOAT )
+    RL_SetShaderValue( shader, ampYLoc, { ampY }, SHADER_UNIFORM_FLOAT )
+    RL_SetShaderValue( shader, speedXLoc, { speedX }, SHADER_UNIFORM_FLOAT )
+    RL_SetShaderValue( shader, speedYLoc, { speedY }, SHADER_UNIFORM_FLOAT )
+end
+
+local seconds = 0.0
+
+function draw()
+	seconds = seconds + RL_GetFrameTime();
+
+    RL_SetShaderValue( shader, secondsLoc, { seconds }, SHADER_UNIFORM_FLOAT );
+
+	RL_ClearBackground( { 100, 150, 100 } )
+
+	RL_BeginShaderMode( shader )
+		RL_DrawTexture( texture, { 0, 0 }, WHITE );
+	RL_EndShaderMode()
+end
-- 
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