public Texture(GraphicsDevice dev)
{
this.dev = dev;
Gl.glGenTextures(1, out texture);
GraphicsDevice.CheckGlError();
}
public Texture(GraphicsDevice dev, Bitmap bitmap)
{
this.dev = dev;
Gl.glGenTextures(1, out texture);
GraphicsDevice.CheckGlError();
SetData(bitmap);
}
public IndexBuffer(GraphicsDevice dev, int size)
{
Gl.glGenBuffers(1, out buffer);
GraphicsDevice.CheckGlError();
Bind();
Gl.glBufferData(Gl.GL_ELEMENT_ARRAY_BUFFER,
new IntPtr(sizeof(ElemType) * size),
new ElemType[ size ],
Gl.GL_DYNAMIC_DRAW);
GraphicsDevice.CheckGlError();
}
public Shader(GraphicsDevice dev, string type)
{
// Vertex shader
string vertexCode;
using (var file = new StreamReader(FileSystem.Open("glsl{0}{1}.vert".F(Path.DirectorySeparatorChar, type))))
vertexCode = file.ReadToEnd();
int v = Gl.glCreateShaderObjectARB(Gl.GL_VERTEX_SHADER_ARB);
GraphicsDevice.CheckGlError();
Gl.glShaderSourceARB(v,1,new string[]{vertexCode},null);
GraphicsDevice.CheckGlError();
Gl.glCompileShaderARB(v);
GraphicsDevice.CheckGlError();
int success;
Gl.glGetObjectParameterivARB(v, Gl.GL_OBJECT_COMPILE_STATUS_ARB, out success);
GraphicsDevice.CheckGlError();
if (success == 0)
throw new InvalidProgramException("Compile error in {0}{1}.vert".F(Path.DirectorySeparatorChar, type));
// Fragment shader
string fragmentCode;
using (var file = new StreamReader(FileSystem.Open("glsl{0}{1}.frag".F(Path.DirectorySeparatorChar, type))))
fragmentCode = file.ReadToEnd();
int f = Gl.glCreateShaderObjectARB(Gl.GL_FRAGMENT_SHADER_ARB);
GraphicsDevice.CheckGlError();
Gl.glShaderSourceARB(f,1,new string[]{fragmentCode},null);
GraphicsDevice.CheckGlError();
Gl.glCompileShaderARB(f);
GraphicsDevice.CheckGlError();
Gl.glGetObjectParameterivARB(f, Gl.GL_OBJECT_COMPILE_STATUS_ARB, out success);
GraphicsDevice.CheckGlError();
if (success == 0)
throw new InvalidProgramException("Compile error in glsl{0}{1}.frag".F(Path.DirectorySeparatorChar, type));
// Assemble program
program = Gl.glCreateProgramObjectARB();
GraphicsDevice.CheckGlError();
Gl.glAttachObjectARB(program,v);
GraphicsDevice.CheckGlError();
Gl.glAttachObjectARB(program,f);
GraphicsDevice.CheckGlError();
Gl.glLinkProgramARB(program);
GraphicsDevice.CheckGlError();
Gl.glGetObjectParameterivARB(program, Gl.GL_OBJECT_LINK_STATUS_ARB, out success);
GraphicsDevice.CheckGlError();
if (success == 0)
throw new InvalidProgramException("Linking error in {0} shader".F(type));
Gl.glUseProgramObjectARB(program);
GraphicsDevice.CheckGlError();
int numUniforms;
Gl.glGetObjectParameterivARB( program, Gl.GL_ACTIVE_UNIFORMS, out numUniforms );
GraphicsDevice.CheckGlError();
int nextTexUnit = 1;
for( int i = 0 ; i < numUniforms ; i++ )
{
int uLen, uSize, uType;
var sb = new StringBuilder(128);
Gl.glGetActiveUniformARB( program, i, 128, out uLen, out uSize, out uType, sb );
GraphicsDevice.CheckGlError();
if( uType == Gl.GL_SAMPLER_2D_ARB )
{
samplers.Add( sb.ToString(), nextTexUnit );
Gl.glUniform1iARB( i, nextTexUnit );
++nextTexUnit;
}
}
}
