protected override void DrawData(DrawInfo drawInfo, IDrawableState state)
{
texture.Bind();
vertexes.Bind();
Gl.glVertexPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
coordinates.Bind();
Gl.glTexCoordPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
// GlHelper.GlColor4(color.Red, color.Green, color.Blue, color.Alpha);
Gl.glDrawArrays(Gl.GL_QUADS, 0, vertexes.Length);
}
protected override void DrawData(DrawInfo drawInfo, IDrawableState state)
{
// Set The First Texture Unit To Normalize Our Vector From The Surface To The Light.
// Set The Texture Environment Of The First Texture Unit To Replace It With The
// Sampled Value Of The Normalization Cube Map.
Gl.glEnableClientState(Gl.GL_VERTEX_ARRAY);
vertexes.Bind();
//Gl.glBindBufferARB(Gl.GL_ARRAY_BUFFER_ARB, vertexName);
Gl.glVertexPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
Gl.glActiveTextureARB(Gl.GL_TEXTURE0_ARB);
Gl.glClientActiveTexture(Gl.GL_TEXTURE0_ARB);
Gl.glEnable(Gl.GL_TEXTURE_CUBE_MAP);
Gl.glBindTexture(Gl.GL_TEXTURE_CUBE_MAP, normalization_cube_map);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_TEXTURE_ENV_MODE, Gl.GL_COMBINE);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_COMBINE_RGB, Gl.GL_REPLACE);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_SOURCE0_RGB, Gl.GL_TEXTURE);
Gl.glEnableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
vertexes.Bind();
//Gl.glBindBufferARB(Gl.GL_ARRAY_BUFFER_ARB, vertexName);
Gl.glTexCoordPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
//now we change the textures origin to that of the light's position
GlHelper.GlGetModelViewMatrix(GlMatrix);
Matrix4x4 matrix;
Matrix4x4.CopyTranspose(GlMatrix, out matrix);
Matrix4x4.Invert(ref matrix, out matrix);
Vector3D lightPos;
Vector3D.Transform(ref matrix, ref light.Position, out lightPos);
Gl.glMatrixMode(Gl.GL_TEXTURE);
Gl.glLoadIdentity();
GlHelper.GlScale(-1, -1, -1);
GlHelper.GlTranslate(
(xInverted) ? (lightPos.X) : (-lightPos.X),
(yInverted) ? (lightPos.Y) : (-lightPos.Y),
-lightPos.Z);
// Set The Second Unit To The Bump Map.
// Set The Texture Environment Of The Second Texture Unit To Perform A Dot3
// Operation With The Value Of The Previous Texture Unit (The Normalized
// Vector Form The Surface To The Light) And The Sampled Texture Value (The
// Normalized Normal Vector Of Our Bump Map).
Gl.glActiveTextureARB(Gl.GL_TEXTURE1_ARB);
Gl.glClientActiveTexture(Gl.GL_TEXTURE1_ARB);
Gl.glEnable(Gl.GL_TEXTURE_2D);
bumpmap.Bind();
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_TEXTURE_ENV_MODE, Gl.GL_COMBINE);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_COMBINE_RGB, Gl.GL_DOT3_RGB);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_SOURCE0_RGB, Gl.GL_PREVIOUS);
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_SOURCE1_RGB, Gl.GL_TEXTURE);
Gl.glEnableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
coordinates.Bind();
Gl.glTexCoordPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
// Set The Third Texture Unit To Our Texture.
// Set The Texture Environment Of The Third Texture Unit To Modulate
// (Multiply) The Result Of Our Dot3 Operation With The Texture Value.
Gl.glActiveTextureARB(Gl.GL_TEXTURE2_ARB);
Gl.glClientActiveTexture(Gl.GL_TEXTURE2_ARB);
Gl.glEnable(Gl.GL_TEXTURE_2D);
sprite.Bind();
Gl.glTexEnvi(Gl.GL_TEXTURE_ENV, Gl.GL_TEXTURE_ENV_MODE, Gl.GL_MODULATE);
Gl.glEnableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
coordinates.Bind();
Gl.glTexCoordPointer(Vector2D.Count, GlHelper.GlScalar, 0, IntPtr.Zero);
//THEN YOU DRAW IT! MUAHHAAHA IT WORKS! it finally works!
Gl.glDrawArrays(Gl.GL_QUADS, 0, 4);
Gl.glDisable(Gl.GL_TEXTURE_2D);
Gl.glDisableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
Gl.glActiveTextureARB(Gl.GL_TEXTURE1_ARB);
Gl.glClientActiveTexture(Gl.GL_TEXTURE1_ARB);
Gl.glDisable(Gl.GL_TEXTURE_2D);
Gl.glDisableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
Gl.glActiveTextureARB(Gl.GL_TEXTURE0_ARB);
Gl.glClientActiveTexture(Gl.GL_TEXTURE0_ARB);
Gl.glDisable(Gl.GL_TEXTURE_CUBE_MAP);
Gl.glDisableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
Gl.glDisableClientState(Gl.GL_VERTEX_ARRAY);
Gl.glLoadIdentity();
Gl.glMatrixMode(Gl.GL_MODELVIEW);
}