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+/*
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+ * This source file is part of libRocket, the HTML/CSS Interface Middleware
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+ *
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+ * For the latest information, see http://www.librocket.com
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+ *
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+ * Copyright (c) 2014 CodePoint David Wimsey
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+ * THE SOFTWARE.
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+ *
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+ */
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+
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+#include "RenderInterfaceDirectX.h"
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+#include <Rocket/Core.h>
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+#include <d3dx9.h>
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+
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+void RenderInterfaceDirectX::SetContext(void *context)
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+{
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+ m_rocket_context = context;
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+}
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+
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+void RenderInterfaceDirectX::SetViewport(int width, int height)
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+{
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+ if(g_pd3dDevice != NULL)
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+ {
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+ D3DXMATRIX projection;
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+ D3DXMatrixOrthoOffCenterLH(&projection, 0, (float)width, (float)height, 0, -1, 1);
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+ g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &projection);
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+ }
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+
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+ if(m_rocket_context != NULL)
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+ {
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+ ((Rocket::Core::Context*)m_rocket_context)->SetDimensions(Rocket::Core::Vector2i(width, height));
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+ }
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+}
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+
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+bool RenderInterfaceDirectX::AttachToNative(void *nativeWindow)
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+{
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+ RECT clientRect;
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+ if(!GetClientRect((HWND) nativeWindow, &clientRect))
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+ {
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+ // if we can't lookup the client rect, abort, something is seriously wrong
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+ return false;
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+ }
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+
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+ g_pD3D = Direct3DCreate9(D3D_SDK_VERSION);
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+ if (g_pD3D == NULL)
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+ return false;
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+
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+ D3DPRESENT_PARAMETERS d3dpp;
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+ ZeroMemory(&d3dpp, sizeof(d3dpp));
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+ d3dpp.Windowed = TRUE;
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+ d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
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+ d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
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+ g_pd3dDevice = NULL;
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+
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+ if (FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT,
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+ D3DDEVTYPE_HAL,
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+ (HWND) nativeWindow,
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+ D3DCREATE_SOFTWARE_VERTEXPROCESSING,
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+ &d3dpp,
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+ &g_pd3dDevice)))
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+ {
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+
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+ this->DetachFromNative();
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+ return false;
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+ }
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+
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+ // Set up an orthographic projection.
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+ D3DXMATRIX projection;
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+ D3DXMatrixOrthoOffCenterLH(&projection, 0, (FLOAT)clientRect.right, (FLOAT)clientRect.bottom, 0, -1, 1);
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+
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+ g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &projection);
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+
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+ // Switch to clockwise culling instead of counter-clockwise culling; Rocket generates counter-clockwise geometry,
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+ // so you can either reverse the culling mode when Rocket is rendering, or reverse the indices in the render
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+ // interface.
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+ g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);
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+
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+ // Enable alpha-blending for Rocket.
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+ g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
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+ g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
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+ g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
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+
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+ // Set up the texture stage states for the diffuse texture.
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+ g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
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+ g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
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+ g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
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+ g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);
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+ g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
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+
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+ g_pd3dDevice->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP);
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+ g_pd3dDevice->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP);
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+
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+ // Disable lighting for Rocket.
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+ g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, FALSE);
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+
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+ return true;
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+}
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+
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+void RenderInterfaceDirectX::DetachFromNative()
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+{
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+ if (g_pd3dDevice != NULL)
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+ {
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+ // Release the last resources we bound to the device.
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+ g_pd3dDevice->SetTexture(0, NULL);
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+ g_pd3dDevice->SetStreamSource(0, NULL, 0, 0);
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+ g_pd3dDevice->SetIndices(NULL);
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+
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+ g_pd3dDevice->Release();
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+ g_pd3dDevice = NULL;
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+ }
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+
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+ if (g_pD3D != NULL)
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+ {
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+ g_pD3D->Release();
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+ g_pD3D = NULL;
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+ }
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+}
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+
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+void RenderInterfaceDirectX::PrepareRenderBuffer()
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+{
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+ if(g_pd3dDevice != NULL)
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+ {
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+ g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
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+ g_pd3dDevice->BeginScene();
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+ }
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+}
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+
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+void RenderInterfaceDirectX::PresentRenderBuffer()
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+{
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+ if(g_pd3dDevice != NULL)
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+ {
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+ g_pd3dDevice->EndScene();
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+ g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
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+ }
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+}
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David Wimsey