mirror of
https://github.com/libretro/RetroArch
synced 2025-02-09 18:40:31 +00:00
133 lines
5.1 KiB
C++
133 lines
5.1 KiB
C++
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2012 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Surface.h"
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#include "../../xdk_d3d8.h"
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bool d3d_surface_new(d3d_surface_t *surface, const char *filename)
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{
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xdk_d3d_video_t *d3d = (xdk_d3d_video_t*)driver.video_data;
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surface->m_pTexture = NULL;
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surface->m_pVertexBuffer = NULL;
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HRESULT ret = D3DXCreateTextureFromFileExA(d3d->d3d_render_device, // d3d device
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filename, // filename
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D3DX_DEFAULT, // width
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D3DX_DEFAULT, // height
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D3DX_DEFAULT, // mipmaps
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0, // usage
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D3DFMT_A8R8G8B8, // format
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D3DPOOL_MANAGED, // memory class
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D3DX_DEFAULT, // texture filter
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D3DX_DEFAULT, // mipmapping
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0, // colorkey
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&surface->m_imageInfo, // image info
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NULL, // pallete
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&surface->m_pTexture); // texture
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if(FAILED(ret))
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{
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RARCH_ERR("Error occurred during D3DXCreateTextureFromFileExA().\n");
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return false;
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}
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// create a vertex buffer for the quad that will display the texture
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ret = d3d->d3d_render_device->CreateVertexBuffer(4 * sizeof(DrawVerticeFormats),
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D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_MANAGED, &surface->m_pVertexBuffer);
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if (FAILED(ret))
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{
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RARCH_ERR("Error occurred during CreateVertexBuffer().\n");
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surface->m_pTexture->Release();
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return false;
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}
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return true;
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}
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void d3d_surface_free(d3d_surface_t *surface)
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{
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// free the vertex buffer
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if (surface->m_pVertexBuffer)
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{
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surface->m_pVertexBuffer->Release();
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surface->m_pVertexBuffer = NULL;
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}
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// free the texture
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if (surface->m_pTexture)
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{
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surface->m_pTexture->Release();
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surface->m_pTexture = NULL;
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}
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}
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bool d3d_surface_render(d3d_surface_t *surface, int x, int y, int32_t w, int32_t h)
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{
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xdk_d3d_video_t *d3d = (xdk_d3d_video_t*)driver.video_data;
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if (surface->m_pTexture == NULL || surface->m_pVertexBuffer == NULL)
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return false;
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float fX = static_cast<float>(x);
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float fY = static_cast<float>(y);
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// create the new vertices
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DrawVerticeFormats newVerts[] =
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{
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// x, y, z, color, u ,v
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{fX, fY, 0.0f, 0, 0, 0},
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{fX + w, fY, 0.0f, 0, 1, 0},
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{fX + w, fY + h, 0.0f, 0, 1, 1},
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{fX, fY + h, 0.0f, 0, 0, 1}
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};
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// load the existing vertices
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DrawVerticeFormats *pCurVerts;
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HRESULT ret = surface->m_pVertexBuffer->Lock(0, 0, (unsigned char**)&pCurVerts, 0);
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if (FAILED(ret))
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{
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RARCH_ERR("Error occurred during m_pVertexBuffer->Lock().\n");
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return false;
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}
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// copy the new verts over the old verts
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memcpy(pCurVerts, newVerts, 4 * sizeof(DrawVerticeFormats));
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surface->m_pVertexBuffer->Unlock();
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d3d->d3d_render_device->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
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d3d->d3d_render_device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
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d3d->d3d_render_device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
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// also blend the texture with the set alpha value
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d3d->d3d_render_device->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
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d3d->d3d_render_device->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);
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d3d->d3d_render_device->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_TEXTURE);
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// draw the quad
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d3d->d3d_render_device->SetTexture(0, surface->m_pTexture);
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d3d->d3d_render_device->SetStreamSource(0, surface->m_pVertexBuffer, sizeof(DrawVerticeFormats));
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d3d->d3d_render_device->SetVertexShader(D3DFVF_CUSTOMVERTEX);
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d3d->d3d_render_device->DrawPrimitive(D3DPT_QUADLIST, 0, 1);
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return true;
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}
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