internal void SetConstantBuffers(GraphicsDevice device, ShaderProgram shaderProgram)
#endif
{
// If there are no constant buffers then skip it.
if (_valid == 0)
return;
var valid = _valid;
for (var i = 0; i < _buffers.Length; i++)
{
var buffer = _buffers[i];
if (buffer != null && !buffer.IsDisposed)
{
#if DIRECTX
buffer.PlatformApply(device, _stage, i);
#elif OPENGL || PSM || WEB
buffer.PlatformApply(device, shaderProgram);
#endif
}
// Early out if this is the last one.
valid &= ~(1 << i);
if (valid == 0)
return;
}
}
public MonoGameSpriteBatchUnpacked(GraphicsContext context, int size)
{
_context = context;
Size = size;
_indexArray = new ushort[6 * size];
for (int i = 0; i < size; i++)
{
_indexArray[i * 6 + 0] = (ushort)(i * 4);
_indexArray[i * 6 + 1] = (ushort)(i * 4 + 1);
_indexArray[i * 6 + 2] = (ushort)(i * 4 + 2);
_indexArray[i * 6 + 3] = (ushort)(i * 4 + 1);
_indexArray[i * 6 + 4] = (ushort)(i * 4 + 3);
_indexArray[i * 6 + 5] = (ushort)(i * 4 + 2);
}
_vertexArrayVector = new Vector2[4 * size];
_vertexArrayColor = new VertexElementColor[4 * size];
_vertexArrayTexture = new Vector2[4 * size];
_vertexBuffer = new VertexBuffer(4 * size, 6 * size, VertexFormat.Float2, VertexFormat.UByte4N, VertexFormat.Float2);
_vertexBuffer.SetIndices(_indexArray, 0, 0, 6 * size);
_shader = new ShaderProgram("/Application/shaders/Texture.cgx");
}
public MonoGameSpriteBatchNoIndex(GraphicsContext context, int size)
{
_context = context;
Size = size;
_vertexArray = new VertexPosition2ColorTexture[4 * size];
_vertexBuffer = new VertexBuffer(4 * size, VertexFormat.Float2, VertexFormat.UByte4N, VertexFormat.Float2);
_shader = new ShaderProgram("/Application/shaders/Texture.cgx");
}
public unsafe void PlatformApply(GraphicsDevice device, ShaderProgram program)
{
// NOTE: We assume here the program has
// already been set on the device.
// If the program changed then lookup the
// uniform again and apply the state.
if (_shaderProgram != program)
{
var location = program.GetUniformLocation(_name);
if (location == -1)
return;
_shaderProgram = program;
_location = location;
_dirty = true;
}
// If the shader program is the same, the effect may still be different and have different values in the buffer
if (!Object.ReferenceEquals(this, _lastConstantBufferApplied))
_dirty = true;
// If the buffer content hasn't changed then we're
// done... use the previously set uniform state.
if (!_dirty)
return;
fixed (byte* bytePtr = _buffer)
{
// TODO: We need to know the type of buffer float/int/bool
// and cast this correctly... else it doesn't work as i guess
// GL is checking the type of the uniform.
#if SDL2
device.GLDevice.glUniform4fv(
_location,
_buffer.Length / 16,
(IntPtr) bytePtr
);
#else
GL.Uniform4(_location, _buffer.Length / 16, (float*)bytePtr);
#endif
}
// Clear the dirty flag.
_dirty = false;
_lastConstantBufferApplied = this;
}
internal EffectPass(Effect effect, EffectPass cloneSource)
{
Debug.Assert(effect != null, "Got a null effect!");
Debug.Assert(cloneSource != null, "Got a null cloneSource!");
_effect = effect;
// Share all the immutable types.
Name = cloneSource.Name;
_blendState = cloneSource._blendState;
_depthStencilState = cloneSource._depthStencilState;
_rasterizerState = cloneSource._rasterizerState;
Annotations = cloneSource.Annotations;
_vertexShader = cloneSource._vertexShader;
_pixelShader = cloneSource._pixelShader;
#if PSM
_shaderProgram = cloneSource._shaderProgram;
#endif
}
internal EffectParameter EffectParameterForUniform(ShaderProgram shaderProgram, int index)
{
//var b = shaderProgram.GetUniformBinding(i);
var name = shaderProgram.GetUniformName(index);
//var s = shaderProgram.GetUniformSize(i);
//var x = shaderProgram.GetUniformTexture(i);
var type = shaderProgram.GetUniformType(index);
//EffectParameter.Semantic => COLOR0 / POSITION0 etc
//FIXME: bufferOffset in below lines is 0 but should probably be something else
switch (type)
{
case ShaderUniformType.Float4x4:
return new EffectParameter(
EffectParameterClass.Matrix, EffectParameterType.Single, name,
4, 4, "float4x4",EffectAnnotationCollection.Empty, EffectParameterCollection.Empty, EffectParameterCollection.Empty, new float[4 * 4]);
case ShaderUniformType.Float4:
return new EffectParameter(
EffectParameterClass.Vector, EffectParameterType.Single, name,
4, 1, "float4",EffectAnnotationCollection.Empty, EffectParameterCollection.Empty, EffectParameterCollection.Empty, new float[4]);
case ShaderUniformType.Sampler2D:
return new EffectParameter(
EffectParameterClass.Object, EffectParameterType.Texture2D, name,
1, 1, "texture2d",EffectAnnotationCollection.Empty, EffectParameterCollection.Empty, EffectParameterCollection.Empty, null);
default:
throw new Exception("Uniform Type " + type + " Not yet implemented (" + name + ")");
}
}
private void Link(Shader vertexShader, Shader pixelShader)
{
// NOTE: No need to worry about background threads here
// as this is only called at draw time when we're in the
// main drawing thread.
var program = GL.CreateProgram();
GraphicsExtensions.CheckGLError();
GL.AttachShader(program, vertexShader.GetShaderHandle());
GraphicsExtensions.CheckGLError();
GL.AttachShader(program, pixelShader.GetShaderHandle());
GraphicsExtensions.CheckGLError();
//vertexShader.BindVertexAttributes(program);
GL.LinkProgram(program);
GraphicsExtensions.CheckGLError();
GL.UseProgram(program);
GraphicsExtensions.CheckGLError();
vertexShader.GetVertexAttributeLocations(program);
pixelShader.ApplySamplerTextureUnits(program);
var linked = 0;
GL.GetProgram(program, GetProgramParameterName.LinkStatus, out linked);
GraphicsExtensions.LogGLError("VertexShaderCache.Link(), GL.GetProgram");
if (linked == 0)
{
var log = GL.GetProgramInfoLog(program);
Console.WriteLine(log);
GL.DetachShader(program, vertexShader.GetShaderHandle());
GL.DetachShader(program, pixelShader.GetShaderHandle());
#if MONOMAC
GL.DeleteProgram(1, ref program);
#else
GL.DeleteProgram(program);
#endif
throw new InvalidOperationException("Unable to link effect program");
}
ShaderProgram shaderProgram = new ShaderProgram(program);
_programCache.Add(vertexShader.HashKey | pixelShader.HashKey, shaderProgram);
}
private void PlatformClear()
{
// Force the uniform location to be looked up again
_shaderProgram = null;
}
public unsafe void PlatformApply(GraphicsDevice device, ShaderProgram program)
{
#warning Unimplemented
}
private static void SetEffectParameter(ShaderProgram program, EffectParameter param)
{
if (param.Name == "posFixup")
return;
int location = program.GetUniformLocation(param.Name);
switch (param.ParameterClass)
{
case EffectParameterClass.Object:
SetEffectParameterObject(program,location, param);
break;
case EffectParameterClass.Vector:
SetEffectParameterVector(program, location, param);
break;
case EffectParameterClass.Matrix:
SetEffectParameterMatrix(program,location, param);
break;
case EffectParameterClass.Scalar:
SetEffectParameterFloat(program, location, param);
break;
}
GraphicsExtensions.CheckGLError();
}
private static void SetEffectParameterVector(ShaderProgram program,int location, EffectParameter param)
{
//int elementCount = param.RowCount * param.ColumnCount;
unsafe
{
float[] objArray = (float[])param.Data;
fixed (float* data = objArray)
{
if (objArray.Length == 2)
GL.Uniform2(location, 1, data);
else if(objArray.Length == 3)
GL.Uniform3(location, 1, data);
else
GL.Uniform4(location, 1, data);
}
}
}
private static void SetEffectParameterMatrix(ShaderProgram program, int location, EffectParameter param)
{
//int elementCount = param.RowCount * param.ColumnCount;
unsafe
{
float[] objArray = (float[])param.Data;
fixed (float* data = objArray)
{
GL.UniformMatrix4(location, 1,false, data);
}
}
}
private static void SetEffectParameterObject(ShaderProgram program,int location,EffectParameter param)
{
object obj = param.Data;
}
private void PlatformClear()
{
// Force the uniform location to be looked up again
_shaderProgram = null;
}
private void Link(Shader vertexShader, Shader pixelShader)
{
// NOTE: No need to worry about background threads here
// as this is only called at draw time when we're in the
// main drawing thread.
var program = vertexShader.GraphicsDevice.GLDevice.glCreateProgram();
vertexShader.GraphicsDevice.GLDevice.glAttachShader(program, vertexShader.GetShaderHandle());
vertexShader.GraphicsDevice.GLDevice.glAttachShader(program, pixelShader.GetShaderHandle());
vertexShader.GraphicsDevice.GLDevice.glLinkProgram(program);
vertexShader.GraphicsDevice.GLDevice.glUseProgram(program);
vertexShader.GetVertexAttributeLocations(program);
pixelShader.ApplySamplerTextureUnits(program);
var linked = 0;
vertexShader.GraphicsDevice.GLDevice.glGetProgramiv(
program,
OpenGLDevice.GLenum.GL_LINK_STATUS,
out linked
);
if (linked == 0)
{
Console.WriteLine(
vertexShader.GraphicsDevice.GLDevice.glGetProgramInfoLog(program)
);
vertexShader.GraphicsDevice.GLDevice.glDetachShader(program, vertexShader.GetShaderHandle());
vertexShader.GraphicsDevice.GLDevice.glDetachShader(program, pixelShader.GetShaderHandle());
vertexShader.GraphicsDevice.GLDevice.glDeleteProgram(program);
throw new InvalidOperationException("Unable to link effect program");
}
ShaderProgram shaderProgram = new ShaderProgram(program);
_programCache.Add(vertexShader.HashKey | pixelShader.HashKey, shaderProgram);
}
/// <summary>
/// Activates the Current Vertex/Pixel shader pair into a program.
/// </summary>
private void ActivateShaderProgram()
{
// Lookup the shader program.
var shaderProgram = _programCache.GetProgram(VertexShader, PixelShader);
if (shaderProgram.Program == -1)
{
return;
}
// Set the new program if it has changed.
if (_shaderProgram != shaderProgram)
{
GL.UseProgram(shaderProgram.Program);
GraphicsExtensions.CheckGLError();
_shaderProgram = shaderProgram;
}
var posFixupLoc = shaderProgram.GetUniformLocation("posFixup");
if (posFixupLoc == -1)
{
return;
}
// Apply vertex shader fix:
// The following two lines are appended to the end of vertex shaders
// to account for rendering differences between OpenGL and DirectX:
//
// gl_Position.y = gl_Position.y * posFixup.y;
// gl_Position.xy += posFixup.zw * gl_Position.ww;
//
// (the following paraphrased from wine, wined3d/state.c and wined3d/glsl_shader.c)
//
// - We need to flip along the y-axis in case of offscreen rendering.
// - D3D coordinates refer to pixel centers while GL coordinates refer
// to pixel corners.
// - D3D has a top-left filling convention. We need to maintain this
// even after the y-flip mentioned above.
// In order to handle the last two points, we translate by
// (63.0 / 128.0) / VPw and (63.0 / 128.0) / VPh. This is equivalent to
// translating slightly less than half a pixel. We want the difference to
// be large enough that it doesn't get lost due to rounding inside the
// driver, but small enough to prevent it from interfering with any
// anti-aliasing.
//
// OpenGL coordinates specify the center of the pixel while d3d coords specify
// the corner. The offsets are stored in z and w in posFixup. posFixup.y contains
// 1.0 or -1.0 to turn the rendering upside down for offscreen rendering. PosFixup.x
// contains 1.0 to allow a mad.
_posFixup[0] = 1.0f;
_posFixup[1] = 1.0f;
_posFixup[2] = (63.0f / 64.0f) / Viewport.Width;
_posFixup[3] = -(63.0f / 64.0f) / Viewport.Height;
//If we have a render target bound (rendering offscreen)
if (IsRenderTargetBound)
{
//flip vertically
_posFixup[1] *= -1.0f;
_posFixup[3] *= -1.0f;
}
GL.Uniform4(posFixupLoc, 1, _posFixup);
GraphicsExtensions.CheckGLError();
}
