vertex color in shader?

PanPan

hi^^
i am trying to write a shader in 2.0.0-alpha.1
my problem is:
how can i get the color in shader which set in mesh:setColorArray?
and how can i use glVertexAttribPointer in Effect

thanks^^

atilim

Hi,

You can access the color vertices as

attribute vec4 COLOR0;

For example, here is the default vertex and pixel shaders of Mesh class:

attribute vec4 POSITION0; attribute vec4 COLOR0; attribute vec2 TEXCOORD0;   uniform mat4 g_MVPMatrix;   varying vec4 color; varying vec2 texCoord;   void main() { gl_Position = g_MVPMatrix * POSITION0; color = COLOR0; texCoord = TEXCOORD0; }

and

#ifndef GL_ES #define lowp #define mediump #define highp #endif   varying lowp vec4 color; varying mediump vec2 texCoord;   uniform lowp vec4 g_Color; uniform lowp sampler2D g_Texture;   void main() { gl_FragColor = g_Color * color * texture2D(g_Texture, texCoord); }

Currently you cannot specify custom vertex attributes or attach multiple textures to Mesh class but we'll improve it with the next release.

PanPan

it work!!!
thanks^^