protected override void OnReadyForInitGLShaderProgram()
{
//----------------
//vertex shader source
string vs = @"
attribute vec2 a_position;
attribute vec4 a_color;
varying vec4 v_color;
void main()
{
gl_Position = vec4(a_position[0],a_position[1],0,1);
v_color = a_color;
}
";
//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");
a_color = shaderProgram.GetAttrV3f("a_color");
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
//GL.ClearColor(0, 0, 0, 0);
GL.ClearColor(1, 1, 1, 1);
}
protected override void OnInitGLProgram(object sender, EventArgs handler)
{
shaderProgram = new MiniShaderProgram();
string vs = @"
attribute vec3 a_position;
attribute vec2 a_texCoord;
varying vec2 v_texCoord;
void main()
{
gl_Position = vec4(a_position[0],a_position[1],0,1);
v_texCoord = a_texCoord;
}
";
string fs = @"
precision mediump float;
varying vec2 v_texCoord;
uniform sampler2D s_texture;
void main()
{
gl_FragColor = texture2D(s_texture, v_texCoord);
}
";
if (!shaderProgram.Build(vs, fs))
{
}
//-------------------------------------------
// Get the attribute locations
a_position = shaderProgram.GetAttrV3f("a_position");// GL.GetAttribLocation(mProgram, "a_position");
a_textCoord = shaderProgram.GetAttrV2f("a_texCoord");
// Get the sampler location
s_texture = shaderProgram.GetUniform1("s_texture");
//// Load the texture
mTexture = ES2Utils2.CreateSimpleTexture2D();
GL.ClearColor(0, 0, 0, 0);
//================================================================================
}
protected override void OnReadyForInitGLShaderProgram()
{
//----------------
//vertex shader source
string vs = @"
precision mediump float;
attribute vec2 a_position;
attribute vec3 a_color;
attribute vec2 a_texcoord;
uniform mat4 u_mvpMatrix;
uniform vec4 u_solidColor;
uniform int u_useSolidColor;
varying vec4 v_color;
varying vec2 v_texcoord;
void main()
{
gl_Position = u_mvpMatrix* vec4(a_position[0],a_position[1],0.0,1.0);
if(u_useSolidColor !=0)
{
v_color= u_solidColor;
}
else
{
v_color = vec4(a_color,1.0);
}
v_texcoord= a_texcoord;
}
";
//fragment source
string fs = @"
precision mediump float;
varying vec4 v_color;
varying vec2 v_texcoord;
void main()
{
//gl_FragColor = vec4(1,v_texcoord.y,0,1);
gl_FragColor= v_color;
}
";
if (!shaderProgram.Build(vs, fs))
{
throw new NotSupportedException();
}
a_position = shaderProgram.GetAttrV2f("a_position");
a_color = shaderProgram.GetAttrV3f("a_color");
a_textureCoord = shaderProgram.GetAttrV2f("a_texcoord");
u_matrix = shaderProgram.GetUniformMat4("u_mvpMatrix");
u_useSolidColor = shaderProgram.GetUniform1("u_useSolidColor");
u_solidColor = shaderProgram.GetUniform4("u_solidColor");
//--------------------------------------------------------------------------------
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.ClearColor(1, 1, 1, 1);
//setup viewport size
int max = Math.Max(this.Width, this.Height);
//square viewport
GL.Viewport(0, 0, max, max);
orthoView = MyMat4.ortho(0, max, 0, max, 0, 1);
//--------------------------------------------------------------------------------
//load image
}
