/// <summary>Renders a static frustrum based background</summary>
/// <param name="data">The background to render</param>
/// <param name="alpha">The alpha level</param>
/// <param name="scale">The scale</param>
private void RenderStaticBackgroundRetained(StaticBackground data, float alpha, float scale)
{
Texture t = data.Texture;
if (data.Texture != null && renderer.currentHost.LoadTexture(ref t, OpenGlTextureWrapMode.RepeatClamp))
{
renderer.LastBoundTexture = t.OpenGlTextures[(int)OpenGlTextureWrapMode.RepeatClamp];
if (alpha == 1.0f)
{
GL.Disable(EnableCap.Blend);
}
else
{
GL.Enable(EnableCap.Blend);
}
if (data.VAO == null)
{
data.CreateVAO(renderer.DefaultShader.VertexLayout, renderer);
}
renderer.DefaultShader.Activate();
renderer.ResetShader(renderer.DefaultShader);
// matrix
renderer.DefaultShader.SetCurrentProjectionMatrix(renderer.CurrentProjectionMatrix);
renderer.DefaultShader.SetCurrentModelViewMatrix(Matrix4D.Scale(scale) * renderer.CurrentViewMatrix);
// fog
if (renderer.OptionFog)
{
renderer.DefaultShader.SetIsFog(true);
renderer.DefaultShader.SetFog(renderer.Fog);
}
// texture
GL.BindTexture(TextureTarget.Texture2D, t.OpenGlTextures[(int)OpenGlTextureWrapMode.RepeatClamp].Name);
renderer.LastBoundTexture = null;
// alpha test
renderer.SetAlphaFunc(AlphaFunction.Greater, 0.0f);
// blend mode
renderer.DefaultShader.SetOpacity(alpha);
// render polygon
VertexArrayObject VAO = (VertexArrayObject)data.VAO;
VAO.Bind();
renderer.lastVAO = VAO.handle;
for (int i = 0; i + 11 < 32 * 12; i += 12)
{
VAO.Draw(PrimitiveType.Triangles, i, 12);
}
renderer.RestoreBlendFunc();
}
}
/// <summary>Renders a static frustrum based background</summary>
/// <param name="data">The background to render</param>
/// <param name="alpha">The alpha level</param>
/// <param name="scale">The scale</param>
private void RenderStaticBackground(StaticBackground data, float alpha, float scale)
{
if (data.Texture != null && renderer.currentHost.LoadTexture(data.Texture, OpenGlTextureWrapMode.RepeatClamp))
{
GL.Enable(EnableCap.Texture2D);
if (alpha == 1.0f)
{
GL.Disable(EnableCap.Blend);
}
else
{
GL.Enable(EnableCap.Blend);
}
if (data.VAO == null)
{
data.CreateVAO();
}
renderer.DefaultShader.Activate();
renderer.ResetShader(renderer.DefaultShader);
// matrix
renderer.DefaultShader.SetCurrentProjectionMatrix(renderer.CurrentProjectionMatrix);
renderer.DefaultShader.SetCurrentModelViewMatrix(Matrix4D.Scale(scale) * renderer.CurrentViewMatrix);
// fog
if (renderer.OptionFog)
{
renderer.DefaultShader.SetIsFog(true);
renderer.DefaultShader.SetFogStart(renderer.Fog.Start);
renderer.DefaultShader.SetFogEnd(renderer.Fog.End);
renderer.DefaultShader.SetFogColor(new Color4(renderer.Fog.Color.R, renderer.Fog.Color.G, renderer.Fog.Color.B, 255));
}
// texture
renderer.DefaultShader.SetIsTexture(true);
renderer.DefaultShader.SetTexture(0);
GL.BindTexture(TextureTarget.Texture2D, data.Texture.OpenGlTextures[(int)OpenGlTextureWrapMode.RepeatClamp].Name);
// alpha test
renderer.SetAlphaFunc(AlphaFunction.Greater, 0.0f);
// blend mode
renderer.DefaultShader.SetOpacity(alpha);
// render polygon
VertexArrayObject VAO = (VertexArrayObject)data.VAO;
VAO.Bind();
for (int i = 0; i + 9 < 32 * 10; i += 10)
{
VAO.Draw(renderer.DefaultShader.VertexLayout, PrimitiveType.Quads, i, 4);
VAO.Draw(renderer.DefaultShader.VertexLayout, PrimitiveType.Triangles, i + 4, 3);
VAO.Draw(renderer.DefaultShader.VertexLayout, PrimitiveType.Triangles, i + 7, 3);
}
VAO.UnBind();
GL.BindTexture(TextureTarget.Texture2D, 0);
renderer.DefaultShader.Deactivate();
GL.Disable(EnableCap.Texture2D);
renderer.RestoreBlendFunc();
}
}
private void DrawImmediate(string text, OpenGlFont font, double left, double top, Color128 color)
{
/*
* Render the string.
* */
GL.Enable(EnableCap.Texture2D);
GL.MatrixMode(MatrixMode.Projection);
GL.PushMatrix();
unsafe
{
fixed(double *matrixPointer = &renderer.CurrentProjectionMatrix.Row0.X)
{
GL.LoadMatrix(matrixPointer);
}
GL.MatrixMode(MatrixMode.Modelview);
GL.PushMatrix();
fixed(double *matrixPointer = &renderer.CurrentViewMatrix.Row0.X)
{
GL.LoadMatrix(matrixPointer);
}
}
for (int i = 0; i < text.Length; i++)
{
Texture texture;
OpenGlFontChar data;
i += font.GetCharacterData(text, i, out texture, out data) - 1;
if (renderer.currentHost.LoadTexture(texture, OpenGlTextureWrapMode.ClampClamp))
{
GL.BindTexture(TextureTarget.Texture2D, texture.OpenGlTextures[(int)OpenGlTextureWrapMode.ClampClamp].Name);
double x = left - (data.PhysicalSize.X - data.TypographicSize.X) / 2;
double y = top - (data.PhysicalSize.Y - data.TypographicSize.Y) / 2;
/*
* In the first pass, mask off the background with pure black.
* */
GL.BlendFunc(BlendingFactor.Zero, BlendingFactor.OneMinusSrcColor);
GL.Begin(PrimitiveType.Quads);
GL.Color4(color.A, color.A, color.A, 1.0f);
GL.TexCoord2(data.TextureCoordinates.X, data.TextureCoordinates.Y);
GL.Vertex2(x, y);
GL.TexCoord2(data.TextureCoordinates.X + data.TextureCoordinates.Z, data.TextureCoordinates.Y);
GL.Vertex2(x + data.PhysicalSize.X, y);
GL.TexCoord2(data.TextureCoordinates.X + data.TextureCoordinates.Z, data.TextureCoordinates.Y + data.TextureCoordinates.W);
GL.Vertex2(x + data.PhysicalSize.X, y + data.PhysicalSize.Y);
GL.TexCoord2(data.TextureCoordinates.X, data.TextureCoordinates.Y + data.TextureCoordinates.W);
GL.Vertex2(x, y + data.PhysicalSize.Y);
GL.End();
/*
* In the second pass, add the character onto the background.
* */
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.One);
GL.Begin(PrimitiveType.Quads);
GL.Color4(color.R, color.G, color.B, color.A);
GL.TexCoord2(data.TextureCoordinates.X, data.TextureCoordinates.Y);
GL.Vertex2(x, y);
GL.TexCoord2(data.TextureCoordinates.X + data.TextureCoordinates.Z, data.TextureCoordinates.Y);
GL.Vertex2(x + data.PhysicalSize.X, y);
GL.TexCoord2(data.TextureCoordinates.X + data.TextureCoordinates.Z, data.TextureCoordinates.Y + data.TextureCoordinates.W);
GL.Vertex2(x + data.PhysicalSize.X, y + data.PhysicalSize.Y);
GL.TexCoord2(data.TextureCoordinates.X, data.TextureCoordinates.Y + data.TextureCoordinates.W);
GL.Vertex2(x, y + data.PhysicalSize.Y);
GL.End();
}
left += data.TypographicSize.X;
}
renderer.RestoreBlendFunc();
GL.Disable(EnableCap.Texture2D);
GL.PopMatrix();
GL.MatrixMode(MatrixMode.Projection);
GL.PopMatrix();
}
/// <summary>Renders a string to the screen.</summary>
/// <param name="font">The font to use.</param>
/// <param name="text">The string to render.</param>
/// <param name="location">The location.</param>
/// <param name="alignment">The alignment.</param>
/// <param name="color">The color.</param>
/// <remarks>This function sets the OpenGL blend function to glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA).</remarks>
public void Draw(OpenGlFont font, string text, Point location, TextAlignment alignment, Color128 color)
{
if (text == null || font == null)
{
return;
}
renderer.LastBoundTexture = null;
/*
* Prepare the top-left coordinates for rendering, incorporating the
* orientation of the string in relation to the specified location.
* */
int left;
if ((alignment & TextAlignment.Left) == 0)
{
int width = 0;
for (int i = 0; i < text.Length; i++)
{
Texture texture;
OpenGlFontChar data;
i += font.GetCharacterData(text, i, out texture, out data) - 1;
width += data.TypographicSize.Width;
}
if ((alignment & TextAlignment.Right) != 0)
{
left = location.X - width;
}
else
{
left = location.X - width / 2;
}
}
else
{
left = location.X;
}
int top;
if ((alignment & TextAlignment.Top) == 0)
{
int height = 0;
for (int i = 0; i < text.Length; i++)
{
Texture texture;
OpenGlFontChar data;
i += font.GetCharacterData(text, i, out texture, out data) - 1;
if (data.TypographicSize.Height > height)
{
height = data.TypographicSize.Height;
}
}
if ((alignment & TextAlignment.Bottom) != 0)
{
top = location.Y - height;
}
else
{
top = location.Y - height / 2;
}
}
else
{
top = location.Y;
}
/*
* Render the string.
* */
GL.Enable(EnableCap.Texture2D);
GL.MatrixMode(MatrixMode.Projection);
GL.PushMatrix();
unsafe
{
fixed(double *matrixPointer = &renderer.CurrentProjectionMatrix.Row0.X)
{
GL.LoadMatrix(matrixPointer);
}
GL.MatrixMode(MatrixMode.Modelview);
GL.PushMatrix();
fixed(double *matrixPointer = &renderer.CurrentViewMatrix.Row0.X)
{
GL.LoadMatrix(matrixPointer);
}
}
for (int i = 0; i < text.Length; i++)
{
Texture texture;
OpenGlFontChar data;
i += font.GetCharacterData(text, i, out texture, out data) - 1;
if (renderer.currentHost.LoadTexture(texture, OpenGlTextureWrapMode.ClampClamp))
{
GL.BindTexture(TextureTarget.Texture2D, texture.OpenGlTextures[(int)OpenGlTextureWrapMode.ClampClamp].Name);
int x = left - (data.PhysicalSize.Width - data.TypographicSize.Width) / 2;
int y = top - (data.PhysicalSize.Height - data.TypographicSize.Height) / 2;
/*
* In the first pass, mask off the background with pure black.
* */
GL.BlendFunc(BlendingFactor.Zero, BlendingFactor.OneMinusSrcColor);
GL.Begin(PrimitiveType.Quads);
GL.Color4(color.A, color.A, color.A, 1.0f);
GL.TexCoord2(data.TextureCoordinates.Left, data.TextureCoordinates.Top);
GL.Vertex2(x, y);
GL.TexCoord2(data.TextureCoordinates.Right, data.TextureCoordinates.Top);
GL.Vertex2(x + data.PhysicalSize.Width, y);
GL.TexCoord2(data.TextureCoordinates.Right, data.TextureCoordinates.Bottom);
GL.Vertex2(x + data.PhysicalSize.Width, y + data.PhysicalSize.Height);
GL.TexCoord2(data.TextureCoordinates.Left, data.TextureCoordinates.Bottom);
GL.Vertex2(x, y + data.PhysicalSize.Height);
GL.End();
/*
* In the second pass, add the character onto the background.
* */
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.One);
GL.Begin(PrimitiveType.Quads);
GL.Color4(color.R, color.G, color.B, color.A);
GL.TexCoord2(data.TextureCoordinates.Left, data.TextureCoordinates.Top);
GL.Vertex2(x, y);
GL.TexCoord2(data.TextureCoordinates.Right, data.TextureCoordinates.Top);
GL.Vertex2(x + data.PhysicalSize.Width, y);
GL.TexCoord2(data.TextureCoordinates.Right, data.TextureCoordinates.Bottom);
GL.Vertex2(x + data.PhysicalSize.Width, y + data.PhysicalSize.Height);
GL.TexCoord2(data.TextureCoordinates.Left, data.TextureCoordinates.Bottom);
GL.Vertex2(x, y + data.PhysicalSize.Height);
GL.End();
}
left += data.TypographicSize.Width;
}
renderer.RestoreBlendFunc();
GL.Disable(EnableCap.Texture2D);
GL.PopMatrix();
GL.MatrixMode(MatrixMode.Projection);
GL.PopMatrix();
}
