private void RenderCommandLists(ImDrawDataPtr drawData)
{
// TODO Pass in the game window to get the screen width and height
var m_Ortho = Monorail.Mathlib.Matrix4.CreateOrthographicOffCenter(0, 1280, 800, 0, -1, 1);
m_GraphicsDevice.BindVertexArrayObject(m_VertexArrayObject.VaoId);
var drawcount = 0;
int vtxOffset = 0;
int idxOffset = 0;
for (int n = 0; n < drawData.CmdListsCount; n++)
{
ImDrawListPtr cmdList = drawData.CmdListsRange[n];
for (int cmdi = 0; cmdi < cmdList.CmdBuffer.Size; cmdi++)
{
ImDrawCmdPtr drawCmd = cmdList.CmdBuffer[cmdi];
var texId = drawCmd.TextureId;
OpenGL.GlBindings.Enable(OpenGL.Enable.GL_SCISSOR_TEST);
OpenGL.GlBindings.glScissor((int)drawCmd.ClipRect.X, (int)drawCmd.ClipRect.Y, (uint)(drawCmd.ClipRect.Z - drawCmd.ClipRect.X), (uint)(drawCmd.ClipRect.W - drawCmd.ClipRect.Y));
// TODO If textureId not loaded?
// m_GraphicsDevice.ScissorRect();
m_GraphicsDevice.BindShaderProgram(m_ShaderProgram.ShaderProgramId);
m_GraphicsDevice.BindVertexArrayObject(m_VertexArrayObject.VaoId);
m_GraphicsDevice.BindTexture(m_Texture.TextureId, OpenGL.TextureType.GL_TEXTURE_2D);
m_ShaderProgram.SetUniform("projection_matrix", m_Ortho);
m_ShaderProgram.SetUniform("FontTexture", 0);
m_GraphicsDevice.DrawElements(PrimitiveType.TriangleList, (int)drawCmd.ElemCount, DrawElementsType.UnsignedInt, idxOffset);
drawcount++;
idxOffset += (int)drawCmd.ElemCount;
}
vtxOffset += cmdList.VtxBuffer.Size;
}
OpenGL.GlBindings.Disable(OpenGL.Enable.GL_SCISSOR_TEST);
}
public void Render(RenderableObject renderObject, GameCamera camera)
{
// TODO this should actually enqueue rather than render but hey!
if (renderObject.IsWireframe)
{
m_Graphics.FillMode(OpenGL.Mode.GL_LINE);
}
if (renderObject.DepthBufferEnabled == false)
{
m_Graphics.Disable(OpenGL.Enable.GL_DEPTH_TEST);
}
// TODO This texture setting needs improving
if (renderObject.CubemapTextureId > -1)
{
m_Graphics.BindTexture(renderObject.CubemapTextureId, OpenGL.TextureType.GL_TEXTURE_CUBE_MAP, OpenGL.TextureUnits.GL_TEXTURE0);
}
if (renderObject.TextureIdA > -1)
{
m_Graphics.BindTexture(renderObject.TextureIdA, OpenGL.TextureType.GL_TEXTURE_2D, OpenGL.TextureUnits.GL_TEXTURE0);
}
if (renderObject.TextureIdB > -1)
{
m_Graphics.BindTexture(renderObject.TextureIdB, OpenGL.TextureType.GL_TEXTURE_2D, OpenGL.TextureUnits.GL_TEXTURE1);
}
m_Graphics.BindShaderProgram(renderObject.ShaderId);
renderObject.OnApplyUniforms(this, camera);
if (renderObject.BlendMode == BlendModes.Alpha)
{
m_Graphics.Enable(OpenGL.Enable.GL_BLEND);
m_Graphics.BlendFunc(OpenGL.BlendFunc.GL_SRC_ALPHA, OpenGL.BlendFunc.GL_ONE_MINUS_SRC_ALPHA);
}
m_Graphics.BindVertexArrayObject(renderObject.VaoId);
if (renderObject.HasIndexBuffer)
{
m_Graphics.DrawElements(PrimitiveType.TriangleList, renderObject.VertexCount, DrawElementsType.UnsignedInt, 0);
}
else
{
m_Graphics.DrawArrays(PrimitiveType.TriangleList, 0, renderObject.VertexCount);
}
if (renderObject.DepthBufferEnabled == false)
{
m_Graphics.Enable(OpenGL.Enable.GL_DEPTH_TEST);
}
if (renderObject.IsWireframe)
{
m_Graphics.FillMode(OpenGL.Mode.GL_FILL);
}
if (renderObject.BlendMode == BlendModes.Alpha)
{
m_Graphics.Disable(OpenGL.Enable.GL_BLEND);
}
}
