michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "ColorLayerD3D9.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: Layer*
michael@0: ColorLayerD3D9::GetLayer()
michael@0: {
michael@0:   return this;
michael@0: }
michael@0: 
michael@0: static void
michael@0: RenderColorLayerD3D9(ColorLayer* aLayer, LayerManagerD3D9 *aManager)
michael@0: {
michael@0:   // XXX we might be able to improve performance by using
michael@0:   // IDirect3DDevice9::Clear
michael@0:   if (aManager->CompositingDisabled()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsIntRect bounds = aLayer->GetBounds();
michael@0: 
michael@0:   aManager->device()->SetVertexShaderConstantF(
michael@0:     CBvLayerQuad,
michael@0:     ShaderConstantRect(bounds.x,
michael@0:                        bounds.y,
michael@0:                        bounds.width,
michael@0:                        bounds.height),
michael@0:     1);
michael@0: 
michael@0:   const gfx::Matrix4x4& transform = aLayer->GetEffectiveTransform();
michael@0:   aManager->device()->SetVertexShaderConstantF(CBmLayerTransform, &transform._11, 4);
michael@0: 
michael@0:   gfxRGBA layerColor(aLayer->GetColor());
michael@0:   float color[4];
michael@0:   float opacity = aLayer->GetEffectiveOpacity() * layerColor.a;
michael@0:   // output color is premultiplied, so we need to adjust all channels.
michael@0:   // mColor is not premultiplied.
michael@0:   color[0] = (float)(layerColor.r * opacity);
michael@0:   color[1] = (float)(layerColor.g * opacity);
michael@0:   color[2] = (float)(layerColor.b * opacity);
michael@0:   color[3] = (float)(opacity);
michael@0: 
michael@0:   aManager->device()->SetPixelShaderConstantF(CBvColor, color, 1);
michael@0: 
michael@0:   aManager->SetShaderMode(DeviceManagerD3D9::SOLIDCOLORLAYER,
michael@0:                           aLayer->GetMaskLayer());
michael@0: 
michael@0:   aManager->device()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
michael@0: }
michael@0: 
michael@0: void
michael@0: ColorLayerD3D9::RenderLayer()
michael@0: {
michael@0:   return RenderColorLayerD3D9(this, mD3DManager);
michael@0: }
michael@0: 
michael@0: } /* layers */
michael@0: } /* mozilla */