public BasicFillShader(CanvasToShaderSharedResource canvasShareResource)
: base(canvasShareResource)
{
//----------------
//vertex shader source
string vs = @"
attribute vec2 a_position;
uniform mat4 u_mvpMatrix;
uniform vec4 u_solidColor;
varying vec4 v_color;
void main()
{
gl_Position = u_mvpMatrix* vec4(a_position[0],a_position[1],0,1);
v_color= u_solidColor;
}
";
//fragment source
string fs = @"
precision mediump float;
varying vec4 v_color;
void main()
{
gl_FragColor = v_color;
}
";
if (!shaderProgram.Build(vs, fs))
{
throw new NotSupportedException();
}
a_position = shaderProgram.GetAttrV2f("a_position");
u_matrix = shaderProgram.GetUniformMat4("u_mvpMatrix");
u_solidColor = shaderProgram.GetUniform4("u_solidColor");
}
protected bool BuildProgram(string vs, string fs)
{
//---------------------
if (!shaderProgram.Build(vs, fs))
{
return false;
}
//-----------------------
a_position = shaderProgram.GetAttrV3f("a_position");
a_texCoord = shaderProgram.GetAttrV2f("a_texCoord");
u_matrix = shaderProgram.GetUniformMat4("u_mvpMatrix");
s_texture = shaderProgram.GetUniform1("s_texture");
OnProgramBuilt();
return true;
}