Shader that works in XNA 4.0 is broken in MonoGame

4

Do you mean it wont compile and run or it is broken ?

Edit nvm ok i guess it works i had two textures that were about the same in there.
It compiles and runs with some minor changes.

If you need to make it run with ps_2_0 then look to the link at the bottom you would have to make further additional changes probably also including a basic vertex shader as well as shown in the post example.

//
// refract
//
#if OPENGL
#define SV_POSITION POSITION
#define VS_SHADERMODEL vs_3_0
#define PS_SHADERMODEL ps_3_0
#else
#define VS_SHADERMODEL vs_4_0_level_9_1
#define PS_SHADERMODEL ps_4_0_level_9_1
#endif

//matrix WorldViewProjection;
float2 DisplacementScroll;

Texture2D TextureA;
sampler2D TextureSamplerA = sampler_state
{
    Texture = <TextureA>;
};

Texture2D TextureB;
sampler2D DisplacementSampler = sampler_state
{
    Texture = <TextureB>;
};

float4 main(float4 position : SV_Position, float4 color : COLOR0, float2 texCoord : TEXCOORD0) : COLOR0
{
    // Look up the displacement amount.
    float2 displacement = tex2D(DisplacementSampler, DisplacementScroll + texCoord / 3);
    
    // Offset the main texture coordinates.
    texCoord += displacement * 0.2 - 0.15;
    
    // Look up into the main texture.
    return tex2D(TextureSamplerA, texCoord) * color;
}


technique Refraction
{
    pass Pass0
    {
        PixelShader = compile PS_SHADERMODEL main(); // ps_2_0  doesn't error either.
    }
}

the relevant part of the game1 pretty obvious what my textures are and calls are that you need to change.
other then that i dunno what its supposed to be doing.

        protected override void Draw(GameTime gameTime)
        {
            Gu.device.Clear(Color.CornflowerBlue);
            //GraphicsDevice.SetRenderTarget(rt);
            //GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.CornflowerBlue , 1f, 0); //new Vector4(1.0f, .99f, .99f, 1.0f)

            DrawRefractCat(gameTime);

            base.Draw(gameTime);
        }

        void DrawRefractCat(GameTime gameTime)
        {
            // Draw the background image.
            Gu.spriteBatch.Begin();
            Gu.spriteBatch.Draw(BasicTextures.checkerBoard, GraphicsDevice.Viewport.Bounds, Color.White);
            Gu.spriteBatch.End();

            // Set an effect parameter to make the
            // displacement texture scroll in a giant circle.
            refractionEffect.Parameters["DisplacementScroll"].SetValue(MoveInCircle(gameTime, new Vector2(100, 100), 0.1f));
            refractionEffect.Parameters["TextureA"].SetValue(BasicTextures.grid);
            refractionEffect.Parameters["TextureB"].SetValue(BasicTextures.checkerBoard);

            // Set the displacement texture.
            //Gu.graphics.GraphicsDevice.Textures[1] = BasicTextures.grid;

            // Begin the sprite batch.
            Gu.spriteBatch.Begin(0, null, null, null, null, refractionEffect);

            // Draw the sprite.
            Gu.spriteBatch.Draw(BasicTextures.checkerBoardRed, MoveInCircle(gameTime,new Vector2(100,100), 1),Color.White);

            // End the sprite batch.
            Gu.spriteBatch.End();
        }
        /// <summary>
        /// Helper for moving a value around in a circle.
        /// </summary>
        static Vector2 MoveInCircle(GameTime gameTime, Vector2 position, float speed)
        {
            double time = gameTime.TotalGameTime.TotalSeconds * speed;

            float x = (float)Math.Cos(time);
            float y = (float)Math.Sin(time);

            return new Vector2(x, y) + position;
        }

        protected override void QuickDrawSpriteBatch(GameTime gameTime)
        {
            itemList01.Draw(gameTime);

            // DrawTest1(gameTime);

            DrawTest2_bound(gameTime);
        }

Look to the bottom example were i got the ps_2_0 shader to run thru spritebatch also look at game1 's draw its a little hacky but it worked.