From b57a26a7112d19fdee27c99028092463e550119c Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Sun, 27 Jan 2019 18:57:47 +0500
Subject: More advanced textures animation support

---
 cwd/assets/altcraft/shaders/vert/face.vs | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

(limited to 'cwd/assets/altcraft/shaders/vert')

diff --git a/cwd/assets/altcraft/shaders/vert/face.vs b/cwd/assets/altcraft/shaders/vert/face.vs
index 9c40846..044c012 100644
--- a/cwd/assets/altcraft/shaders/vert/face.vs
+++ b/cwd/assets/altcraft/shaders/vert/face.vs
@@ -1,4 +1,5 @@
 #version 330 core
+
 layout (location = 0) in vec3 position;
 layout (location = 2) in vec2 UvCoordinates;
 layout (location = 7) in vec4 Texture;
@@ -6,6 +7,7 @@ layout (location = 8) in mat4 model;
 layout (location = 12) in vec3 color;
 layout (location = 13) in vec2 light;
 layout (location = 14) in float TextureLayer;
+layout (location = 15) in float TextureFrames;
 
 out VS_OUT {
     vec2 UvPosition;
@@ -14,8 +16,7 @@ out VS_OUT {
     vec2 Light;
 } vs_out;
 
-//uniform  mat4 view;
-//uniform  mat4 projection;
+uniform float GlobalTime;
 uniform mat4 projView;
 
 vec3 TransformTextureCoord(vec4 TextureAtlasCoords, vec2 UvCoords, float Layer) {
@@ -34,8 +35,15 @@ void main()
     vec4 sourcePosition = vec4(position,1.0f);
     gl_Position = projView * model * sourcePosition;
 
+	vec4 texturePos = Texture;
+	float frameHeight = texturePos.w / TextureFrames;
+	float currentFrame = mod(GlobalTime * 4.0f, TextureFrames);
+    currentFrame = trunc(currentFrame);
+	texturePos.w = frameHeight;
+	texturePos.y = texturePos.y + currentFrame * frameHeight;
+
     vs_out.UvPosition = vec2(UvCoordinates.x,UvCoordinates.y);
-    vs_out.Texture = TransformTextureCoord(Texture,UvCoordinates,TextureLayer);
+    vs_out.Texture = TransformTextureCoord(texturePos,UvCoordinates,TextureLayer);
     vs_out.Color = color;
     vs_out.Light = light;
 }
-- 
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