mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 10:13:53 +00:00
132 lines
4.2 KiB
C
132 lines
4.2 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2013 - 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 "../gfx/image.h"
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#include "xdk_d3d.h"
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bool texture_image_load(const char *path, struct texture_image *out_img)
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{
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xdk_d3d_video_t *d3d = (xdk_d3d_video_t*)driver.video_data;
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D3DXIMAGE_INFO m_imageInfo;
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out_img->pixels = NULL;
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out_img->vertex_buf = NULL;
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HRESULT ret = D3DXCreateTextureFromFileExA(d3d->d3d_render_device,
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path, D3DX_DEFAULT, D3DX_DEFAULT, D3DX_DEFAULT, 0, D3DFMT_A8R8G8B8,
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D3DPOOL_MANAGED, D3DX_DEFAULT, D3DX_DEFAULT, 0, &m_imageInfo, NULL,
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&out_img->pixels);
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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, &out_img->vertex_buf);
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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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out_img->pixels->Release();
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return false;
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}
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out_img->width = m_imageInfo.Width;
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out_img->height = m_imageInfo.Height;
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return true;
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}
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void texture_image_free(struct texture_image *out_img)
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{
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// free the vertex buffer
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if (out_img->vertex_buf)
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{
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out_img->vertex_buf->Release();
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out_img->vertex_buf = NULL;
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}
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// free the texture
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if (out_img->pixels)
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{
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out_img->pixels->Release();
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out_img->pixels = NULL;
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}
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}
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bool texture_image_render(struct texture_image *out_img)
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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 (out_img->pixels == NULL || out_img->vertex_buf == NULL)
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return false;
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int x = out_img->x;
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int y = out_img->y;
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int w = out_img->width;
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int h = out_img->height;
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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 = out_img->vertex_buf->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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out_img->vertex_buf->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, out_img->pixels);
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d3d->d3d_render_device->SetStreamSource(0, out_img->vertex_buf, 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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