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/*
* Copyright (C) 2011-2011 Gregory hainaut
* Copyright (C) 2007-2009 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSTextureCacheOGL.h"
GSTextureCacheOGL::GSTextureCacheOGL(GSRenderer* r)
: GSTextureCache(r)
{
}
void GSTextureCacheOGL::Read(Target* t, const GSVector4i& r)
{
if (!t->m_dirty.empty() || (r.width() == 0 && r.height() == 0))
return;
const GIFRegTEX0& TEX0 = t->m_TEX0;
GLuint fmt;
int ps_shader;
switch (TEX0.PSM)
{
case PSM_PSMCT32:
case PSM_PSMCT24:
fmt = GL_RGBA8;
ps_shader = 0;
break;
case PSM_PSMCT16:
case PSM_PSMCT16S:
fmt = GL_R16UI;
ps_shader = 1;
break;
case PSM_PSMZ32:
fmt = GL_R32UI;
ps_shader = 10;
break;
case PSM_PSMZ24:
fmt = GL_R32UI;
ps_shader = 10;
break;
case PSM_PSMZ16:
case PSM_PSMZ16S:
fmt = GL_R16UI;
ps_shader = 10;
break;
default:
return;
}
// Yes lots of logging, but I'm not confident with this code
GL_PUSH("Texture Cache Read. Format(0x%x)", TEX0.PSM);
GL_PERF("TC: Read Back Target: %d (0x%x)[fmt: 0x%x]. Size %dx%d",
t->m_texture->GetID(), TEX0.TBP0, TEX0.PSM, r.width(), r.height());
GSVector4 src = GSVector4(r) * GSVector4(t->m_texture->GetScale()).xyxy() / GSVector4(t->m_texture->GetSize()).xyxy();
if(GSTexture* offscreen = m_renderer->m_dev->CopyOffscreen(t->m_texture, src, r.width(), r.height(), fmt, ps_shader))
{
GSTexture::GSMap m;
if(offscreen->Map(m))
{
// TODO: block level write
GSOffset* off = m_renderer->m_mem.GetOffset(TEX0.TBP0, TEX0.TBW, TEX0.PSM);
switch(TEX0.PSM)
{
case PSM_PSMCT32:
m_renderer->m_mem.WritePixel32(m.bits, m.pitch, off, r);
break;
case PSM_PSMCT24:
m_renderer->m_mem.WritePixel24(m.bits, m.pitch, off, r);
break;
case PSM_PSMCT16:
case PSM_PSMCT16S:
m_renderer->m_mem.WritePixel16(m.bits, m.pitch, off, r);
break;
case PSM_PSMZ32:
m_renderer->m_mem.WritePixel32(m.bits, m.pitch, off, r);
break;
case PSM_PSMZ24:
m_renderer->m_mem.WritePixel24(m.bits, m.pitch, off, r);
break;
case PSM_PSMZ16:
case PSM_PSMZ16S:
m_renderer->m_mem.WritePixel16(m.bits, m.pitch, off, r);
break;
default:
ASSERT(0);
}
offscreen->Unmap();
}
// FIXME invalidate data
m_renderer->m_dev->Recycle(offscreen);
}
GL_POP();
}
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