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gzdoom-gles/src/win32/fb_d3d9.cpp

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/*
** fb_d3d9.cpp
** Code to let ZDoom use Direct3D 9 as a simple framebuffer
**
**---------------------------------------------------------------------------
** Copyright 1998-2008 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
** This file does _not_ implement hardware-acclerated rendering. It is just
** a means of getting the pixel data to the screen in a more reliable
** method on modern hardware by copying the entire frame to a texture,
** drawing that to the screen, and presenting.
*/
// HEADER FILES ------------------------------------------------------------
#ifdef _DEBUG
#define D3D_DEBUG_INFO
#endif
#define DIRECT3D_VERSION 0x0900
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <d3d9.h>
#include <stdio.h>
#define USE_WINDOWS_DWORD
#include "doomtype.h"
#include "c_dispatch.h"
#include "templates.h"
#include "i_system.h"
#include "i_video.h"
#include "i_input.h"
#include "v_video.h"
#include "v_pfx.h"
#include "stats.h"
#include "doomerrors.h"
#include "r_draw.h"
#include "r_translate.h"
#include "win32iface.h"
#include <mmsystem.h>
// MACROS ------------------------------------------------------------------
// The number of vertices the vertex buffer should hold.
#define NUM_VERTS 28
// TYPES -------------------------------------------------------------------
IMPLEMENT_CLASS(D3DFB)
struct FBVERTEX
{
FLOAT x, y, z, rhw;
FLOAT tu, tv;
};
#define D3DFVF_FBVERTEX (D3DFVF_XYZRHW|D3DFVF_TEX1)
class D3DTex : public FNativeTexture
{
public:
D3DTex(FTexture *tex, D3DFB *fb);
~D3DTex();
FTexture *GameTex;
IDirect3DTexture9 *Tex;
D3DTex **Prev;
D3DTex *Next;
// Texture coordinates to use for the lower-right corner, should this
// texture prove to be larger than the game texture it represents.
FLOAT TX, TY;
bool IsGray;
bool Create(IDirect3DDevice9 *D3DDevice);
bool Update();
D3DFORMAT GetTexFormat();
FTextureFormat ToTexFmt(D3DFORMAT fmt);
};
class D3DPal : public FNativeTexture
{
public:
D3DPal(FRemapTable *remap, D3DFB *fb);
~D3DPal();
D3DPal **Prev;
D3DPal *Next;
IDirect3DTexture9 *Tex;
bool Update();
FRemapTable *Remap;
int RoundedPaletteSize;
};
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
void DoBlending (const PalEntry *from, PalEntry *to, int count, int r, int g, int b, int a);
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
extern HWND Window;
extern IVideo *Video;
extern BOOL AppActive;
extern int SessionState;
extern bool VidResizing;
EXTERN_CVAR (Bool, fullscreen)
EXTERN_CVAR (Float, Gamma)
EXTERN_CVAR (Int, vid_displaybits)
EXTERN_CVAR (Bool, vid_vsync)
EXTERN_CVAR (Float, transsouls)
extern IDirect3D9 *D3D;
extern cycle_t BlitCycles;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
#include "fb_d3d9_shaders.h"
// PUBLIC DATA DEFINITIONS -------------------------------------------------
// CODE --------------------------------------------------------------------
D3DFB::D3DFB (int width, int height, bool fullscreen)
: BaseWinFB (width, height)
{
D3DPRESENT_PARAMETERS d3dpp;
D3DDevice = NULL;
VertexBuffer = NULL;
FBTexture = NULL;
WindowedRenderTexture = NULL;
PaletteTexture = NULL;
StencilPaletteTexture = NULL;
ShadedPaletteTexture = NULL;
PalTexShader = NULL;
PlainShader = NULL;
PlainStencilShader = NULL;
DimShader = NULL;
GammaFixerShader = NULL;
FBFormat = D3DFMT_UNKNOWN;
PalFormat = D3DFMT_UNKNOWN;
VSync = vid_vsync;
BlendingRect.left = 0;
BlendingRect.top = 0;
BlendingRect.right = FBWidth;
BlendingRect.bottom = FBHeight;
UseBlendingRect = false;
In2D = 0;
Palettes = NULL;
Textures = NULL;
Accel2D = true;
Gamma = 1.0;
FlashConstants[0][3] = FlashConstants[0][2] = FlashConstants[0][1] = FlashConstants[0][0] = 0;
FlashConstants[1][3] = FlashConstants[1][2] = FlashConstants[1][1] = FlashConstants[1][0] = 1;
FlashColor = 0;
FlashAmount = 0;
NeedGammaUpdate = false;
NeedPalUpdate = false;
if (MemBuffer == NULL)
{
return;
}
memcpy (SourcePalette, GPalette.BaseColors, sizeof(PalEntry)*256);
Windowed = !(static_cast<Win32Video *>(Video)->GoFullscreen (fullscreen));
TrueHeight = height;
if (fullscreen)
{
for (Win32Video::ModeInfo *mode = static_cast<Win32Video *>(Video)->m_Modes; mode != NULL; mode = mode->next)
{
if (mode->width == Width && mode->height == Height)
{
TrueHeight = mode->realheight;
break;
}
}
}
FillPresentParameters (&d3dpp, fullscreen, VSync);
HRESULT hr;
if (FAILED(hr = D3D->CreateDevice (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Window,
D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_FPU_PRESERVE, &d3dpp, &D3DDevice)))
{
D3DDevice = NULL;
if (fullscreen)
{
d3dpp.BackBufferFormat = D3DFMT_R5G6B5;
if (FAILED(D3D->CreateDevice (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Window,
D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_FPU_PRESERVE, &d3dpp, &D3DDevice)))
{
D3DDevice = NULL;
}
}
}
if (D3DDevice != NULL)
{
CreateResources ();
// Be sure we know what the alpha blend is
D3DDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
AlphaBlendEnabled = FALSE;
AlphaSrcBlend = D3DBLEND(0);
AlphaDestBlend = D3DBLEND(0);
}
}
D3DFB::~D3DFB ()
{
KillNativeTexs();
KillNativePals();
ReleaseResources ();
if (D3DDevice != NULL)
{
D3DDevice->Release();
}
}
void D3DFB::FillPresentParameters (D3DPRESENT_PARAMETERS *pp, bool fullscreen, bool vsync)
{
memset (pp, 0, sizeof(*pp));
pp->Windowed = !fullscreen;
pp->SwapEffect = D3DSWAPEFFECT_DISCARD;
pp->BackBufferWidth = Width;
pp->BackBufferHeight = TrueHeight;
pp->BackBufferFormat = fullscreen ? D3DFMT_X8R8G8B8 : D3DFMT_UNKNOWN;
pp->hDeviceWindow = Window;
pp->PresentationInterval = vsync ? D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE;
}
bool D3DFB::CreateResources ()
{
if (!Windowed)
{
// Remove the window border in fullscreen mode
SetWindowLong (Window, GWL_STYLE, WS_POPUP|WS_VISIBLE|WS_SYSMENU);
}
else
{
// Resize the window to match desired dimensions
int sizew = Width + GetSystemMetrics (SM_CXSIZEFRAME)*2;
int sizeh = Height + GetSystemMetrics (SM_CYSIZEFRAME) * 2 +
GetSystemMetrics (SM_CYCAPTION);
LOG2 ("Resize window to %dx%d\n", sizew, sizeh);
VidResizing = true;
// Make sure the window has a border in windowed mode
SetWindowLong (Window, GWL_STYLE, WS_VISIBLE|WS_OVERLAPPEDWINDOW);
if (GetWindowLong (Window, GWL_EXSTYLE) & WS_EX_TOPMOST)
{
// Direct3D 9 will apparently add WS_EX_TOPMOST to fullscreen windows,
// and removing it is a little tricky. Using SetWindowLongPtr to clear it
// will not do the trick, but sending the window behind everything will.
SetWindowPos (Window, HWND_BOTTOM, 0, 0, sizew, sizeh,
SWP_DRAWFRAME | SWP_NOCOPYBITS | SWP_NOMOVE);
SetWindowPos (Window, HWND_TOP, 0, 0, 0, 0, SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOSIZE);
}
else
{
SetWindowPos (Window, NULL, 0, 0, sizew, sizeh,
SWP_DRAWFRAME | SWP_NOCOPYBITS | SWP_NOMOVE | SWP_NOZORDER);
}
I_RestoreWindowedPos ();
VidResizing = false;
}
SM14 = false;
if (FAILED(D3DDevice->CreatePixelShader (PalTexShader20Def, &PalTexShader)) &&
(SM14 = true, FAILED(D3DDevice->CreatePixelShader (PalTexShader14Def, &PalTexShader))))
{
return false;
}
if (FAILED(D3DDevice->CreatePixelShader (PlainShaderDef, &PlainShader)) ||
FAILED(D3DDevice->CreatePixelShader (PlainStencilDef, &PlainStencilShader)) ||
FAILED(D3DDevice->CreatePixelShader (DimShaderDef, &DimShader)))
{
return false;
}
if (FAILED(D3DDevice->CreatePixelShader (GammaFixerDef, &GammaFixerShader)))
{
Printf ("Windowed mode gamma will not work.\n");
GammaFixerShader = NULL;
}
CurPixelShader = NULL;
memset(Constant, 0, sizeof(Constant));
if (!CreateFBTexture() ||
!CreatePaletteTexture() ||
!CreateStencilPaletteTexture() ||
!CreateShadedPaletteTexture())
{
return false;
}
if (!CreateVertexes())
{
return false;
}
SetGamma (Gamma);
return true;
}
void D3DFB::ReleaseResources ()
{
I_SaveWindowedPos ();
if (FBTexture != NULL)
{
FBTexture->Release();
FBTexture = NULL;
}
if (WindowedRenderTexture != NULL)
{
WindowedRenderTexture->Release();
WindowedRenderTexture = NULL;
}
if (VertexBuffer != NULL)
{
VertexBuffer->Release();
VertexBuffer = NULL;
}
if (PaletteTexture != NULL)
{
PaletteTexture->Release();
PaletteTexture = NULL;
}
if (StencilPaletteTexture != NULL)
{
StencilPaletteTexture->Release();
StencilPaletteTexture = NULL;
}
if (ShadedPaletteTexture != NULL)
{
ShadedPaletteTexture->Release();
ShadedPaletteTexture = NULL;
}
if (PalTexShader != NULL)
{
PalTexShader->Release();
PalTexShader = NULL;
}
if (PlainShader != NULL)
{
PlainShader->Release();
PlainShader = NULL;
}
if (PlainStencilShader != NULL)
{
PlainStencilShader->Release();
PlainStencilShader = NULL;
}
if (DimShader != NULL)
{
DimShader->Release();
DimShader = NULL;
}
if (GammaFixerShader != NULL)
{
GammaFixerShader->Release();
GammaFixerShader = NULL;
}
}
bool D3DFB::Reset ()
{
D3DPRESENT_PARAMETERS d3dpp;
// Free resources created with D3DPOOL_DEFAULT.
if (FBTexture != NULL)
{
FBTexture->Release();
FBTexture = NULL;
}
if (WindowedRenderTexture != NULL)
{
WindowedRenderTexture->Release();
WindowedRenderTexture = NULL;
}
if (VertexBuffer != NULL)
{
VertexBuffer->Release();
VertexBuffer = NULL;
}
FillPresentParameters (&d3dpp, !Windowed, VSync);
if (!SUCCEEDED(D3DDevice->Reset (&d3dpp)))
{
return false;
}
if (!CreateFBTexture() || !CreateVertexes())
{
return false;
}
return true;
}
//==========================================================================
//
// D3DFB :: KillNativePals
//
// Frees all native palettes.
//
//==========================================================================
void D3DFB::KillNativePals()
{
while (Palettes != NULL)
{
delete Palettes;
}
}
//==========================================================================
//
// D3DFB :: KillNativeTexs
//
// Frees all native textures.
//
//==========================================================================
void D3DFB::KillNativeTexs()
{
while (Textures != NULL)
{
delete Textures;
}
}
//==========================================================================
//
// D3DFB :: KillNativeNonPalettedTexs
//
// Frees all native textures that aren't paletted.
//
//==========================================================================
void D3DFB::KillNativeNonPalettedTexs()
{
D3DTex *tex;
D3DTex *next;
for (tex = Textures; tex != NULL; tex = next)
{
next = tex->Next;
if (tex->GetTexFormat() != D3DFMT_L8)
{
delete tex;
}
}
}
bool D3DFB::CreateFBTexture ()
{
if (FAILED(D3DDevice->CreateTexture (Width, Height, 1, D3DUSAGE_DYNAMIC, D3DFMT_L8, D3DPOOL_DEFAULT, &FBTexture, NULL)))
{
int pow2width, pow2height, i;
for (i = 1; i < Width; i <<= 1) {} pow2width = i;
for (i = 1; i < Height; i <<= 1) {} pow2height = i;
if (FAILED(D3DDevice->CreateTexture (pow2width, pow2height, 1, D3DUSAGE_DYNAMIC, D3DFMT_L8, D3DPOOL_DEFAULT, &FBTexture, NULL)))
{
return false;
}
else
{
FBWidth = pow2width;
FBHeight = pow2height;
}
}
else
{
FBWidth = Width;
FBHeight = Height;
}
if (Windowed && GammaFixerShader)
{
if (FAILED(D3DDevice->CreateTexture (FBWidth, FBHeight, 1, D3DUSAGE_RENDERTARGET, D3DFMT_X8R8G8B8, D3DPOOL_DEFAULT, &WindowedRenderTexture, NULL)))
{
WindowedRenderTexture = false;
}
}
return true;
}
bool D3DFB::CreatePaletteTexture ()
{
if (FAILED(D3DDevice->CreateTexture (256, 1, 1, 0, D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &PaletteTexture, NULL)))
{
return false;
}
PalFormat = D3DFMT_A8R8G8B8;
return true;
}
bool D3DFB::CreateStencilPaletteTexture()
{
// The stencil palette is a special palette where the first entry is zero alpha,
// and everything else is white with full alpha.
if (FAILED(D3DDevice->CreateTexture(256, 1, 1, 0, D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &StencilPaletteTexture, NULL)))
{
return false;
}
D3DLOCKED_RECT lockrect;
if (SUCCEEDED(StencilPaletteTexture->LockRect(0, &lockrect, NULL, 0)))
{
DWORD *pix = (DWORD *)lockrect.pBits;
*pix = 0;
memset(pix + 1, 0xFF, 255*4);
StencilPaletteTexture->UnlockRect(0);
}
return true;
}
bool D3DFB::CreateShadedPaletteTexture()
{
// The shaded palette is similar to the stencil palette, except each entry's
// alpha is the same as its index.
if (FAILED(D3DDevice->CreateTexture(256, 1, 1, 0, D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &ShadedPaletteTexture, NULL)))
{
return false;
}
D3DLOCKED_RECT lockrect;
if (SUCCEEDED(ShadedPaletteTexture->LockRect(0, &lockrect, NULL, 0)))
{
BYTE *pix = (BYTE *)lockrect.pBits;
for (int i = 0; i < 256; ++i)
{
pix[3] = i;
pix[2] = pix[1] = pix[0] = 255;
pix += 4;
}
ShadedPaletteTexture->UnlockRect(0);
}
return true;
}
bool D3DFB::CreateVertexes ()
{
if (FAILED(D3DDevice->CreateVertexBuffer (sizeof(FBVERTEX)*NUM_VERTS, D3DUSAGE_WRITEONLY, D3DFVF_FBVERTEX, D3DPOOL_DEFAULT, &VertexBuffer, NULL)) ||
!UploadVertices())
{
return false;
}
return true;
}
bool D3DFB::UploadVertices()
{
float top = (TrueHeight - Height) * 0.5f - 0.5f;
float right = float(Width) - 0.5f;
float bot = float(Height) + top;
float texright = float(Width) / float(FBWidth);
float texbot = float(Height) / float(FBHeight);
void *pverts;
if ((BlendingRect.left <= 0 && BlendingRect.right >= FBWidth &&
BlendingRect.top <= 0 && BlendingRect.bottom >= FBHeight) ||
BlendingRect.left >= BlendingRect.right ||
BlendingRect.top >= BlendingRect.bottom)
{
// Blending rect covers the whole screen, so only need 4 verts.
FBVERTEX verts[4] =
{
{ -0.5f, top, 0.5f, 1.f, 0.f, 0.f },
{ right, top, 0.5f, 1.f, texright, 0.f },
{ right, bot, 0.5f, 1.f, texright, texbot },
{ -0.5f, bot, 0.5f, 1.f, 0.f, texbot }
};
if (SUCCEEDED(VertexBuffer->Lock(0, sizeof(verts), &pverts, 0)))
{
memcpy (pverts, verts, sizeof(verts));
VertexBuffer->Unlock();
return true;
}
return false;
}
// Only the 3D area of the screen is effected by palette flashes.
// So we create some boxes around it that can be drawn without the
// flash. These include the corners of the view area so I can be
// sure the texture interpolation is consistant. (Well, actually,
// since it's a 1-to-1 pixel mapping, it shouldn't matter.)
float mxl = float(BlendingRect.left) - 0.5f;
float mxr = float(BlendingRect.right) - 0.5f;
float myt = float(BlendingRect.top) + top;
float myb = float(BlendingRect.bottom) + top;
float tmxl = float(BlendingRect.left) / float(Width) * texright;
float tmxr = float(BlendingRect.right) / float(Width) * texright;
float tmyt = float(BlendingRect.top) / float(Height) * texbot;
float tmyb = float(BlendingRect.bottom) / float(Height) * texbot;
/* +-------------------+
| |
+-----+-------+-----+
| | | |
| | | |
| | | |
+-----+-------+-----+
| |
+-------------------+ */
FBVERTEX verts[28] =
{
// The whole screen, for when no blending is happening
{ -0.5f, top, 0.5f, 1.f, 0.f, 0.f }, // 0
{ right, top, 0.5f, 1.f, texright, 0.f },
{ right, bot, 0.5f, 1.f, texright, texbot },
{ -0.5f, bot, 0.5f, 1.f, 0.f, texbot },
// Left area
{ -0.5f, myt, 0.5f, 1.f, 0.f, tmyt }, // 4
{ mxl, myt, 0.5f, 1.f, tmxl, tmyt },
{ mxl, myb, 0.5f, 1.f, tmxl, tmyb },
{ -0.5f, myb, 0.5f, 1.f, 0.f, tmyb },
// Right area
{ mxr, myt, 0.5f, 1.f, tmxr, tmyt }, // 8
{ right, myt, 0.5f, 1.f, texright, tmyt },
{ right, myb, 0.5f, 1.f, texright, tmyb },
{ mxr, myb, 0.5f, 1.f, tmxr, tmyb },
// Bottom area
{ -0.5f, bot, 0.5f, 1.f, 0.f, texbot }, // 12
{ -0.5f, myb, 0.5f, 1.f, 0.f, tmyb },
{ mxl, myb, 0.5f, 1.f, tmxl, tmyb },
{ mxr, myb, 0.5f, 1.f, tmxr, tmyb },
{ right, myb, 0.5f, 1.f, texright, tmyb },
{ right, bot, 0.5f, 1.f, texright, texbot },
// Top area
{ right, top, 0.5f, 1.f, texright, 0.f }, // 18
{ right, myt, 0.5f, 1.f, texright, tmyt },
{ mxr, myt, 0.5f, 1.f, tmxr, tmyt },
{ mxl, myt, 0.5f, 1.f, tmxl, tmyt },
{ -0.5f, myt, 0.5f, 1.f, 0.f, tmyt },
{ -0.5f, top, 0.5f, 1.f, 0.f, 0.f },
// Middle (blended) area
{ mxl, myt, 0.5f, 1.f, tmxl, tmyt }, // 24
{ mxr, myt, 0.5f, 1.f, tmxr, tmyt },
{ mxr, myb, 0.5f, 1.f, tmxr, tmyb },
{ mxl, myb, 0.5f, 1.f, tmxl, tmyb }
};
if (SUCCEEDED(VertexBuffer->Lock(0, sizeof(verts), &pverts, 0)))
{
memcpy (pverts, verts, sizeof(verts));
VertexBuffer->Unlock();
return true;
}
return false;
}
int D3DFB::GetPageCount ()
{
return 1;
}
void D3DFB::PaletteChanged ()
{
}
int D3DFB::QueryNewPalette ()
{
return 0;
}
bool D3DFB::IsValid ()
{
return D3DDevice != NULL;
}
HRESULT D3DFB::GetHR ()
{
return 0;
}
bool D3DFB::IsFullscreen ()
{
return !Windowed;
}
bool D3DFB::Lock ()
{
return Lock(true);
}
bool D3DFB::Lock (bool buffered)
{
if (LockCount++ > 0)
{
return false;
}
Buffer = MemBuffer;
return false;
}
void D3DFB::Unlock ()
{
LOG1 ("Unlock <%d>\n", LockCount);
if (LockCount == 0)
{
return;
}
if (UpdatePending && LockCount == 1)
{
Update ();
}
else if (--LockCount == 0)
{
Buffer = NULL;
}
}
// When In2D == 0: Copy buffer to screen and present
// When In2D == 1: Copy buffer to screen but do not present
// When In2D == 2: Present and set In2D to 0
void D3DFB::Update ()
{
if (In2D == 2)
{
DrawRateStuff();
DoWindowedGamma();
D3DDevice->EndScene();
D3DDevice->Present(NULL, NULL, NULL, NULL);
In2D = 0;
return;
}
if (LockCount != 1)
{
I_FatalError ("Framebuffer must have exactly 1 lock to be updated");
if (LockCount > 0)
{
UpdatePending = true;
--LockCount;
}
return;
}
if (In2D == 0)
{
DrawRateStuff();
}
if (NeedGammaUpdate)
{
float psgamma[4];
float igamma;
NeedGammaUpdate = false;
igamma = 1 / Gamma;
if (!Windowed)
{
D3DGAMMARAMP ramp;
for (int i = 0; i < 256; ++i)
{
ramp.blue[i] = ramp.green[i] = ramp.red[i] = WORD(65535.f * powf(i / 255.f, igamma));
}
D3DDevice->SetGammaRamp(0, D3DSGR_CALIBRATE, &ramp);
}
psgamma[2] = psgamma[1] = psgamma[0] = igamma;
psgamma[3] = 1;
D3DDevice->SetPixelShaderConstantF(4, psgamma, 1);
NeedPalUpdate = true;
}
if (NeedPalUpdate)
{
UploadPalette();
}
BlitCycles = 0;
clock (BlitCycles);
LockCount = 0;
PaintToWindow ();
if (In2D == 0)
{
DoWindowedGamma();
D3DDevice->EndScene();
D3DDevice->Present(NULL, NULL, NULL, NULL);
}
unclock (BlitCycles);
LOG1 ("cycles = %d\n", BlitCycles);
Buffer = NULL;
UpdatePending = false;
}
bool D3DFB::PaintToWindow ()
{
HRESULT hr;
if (LockCount != 0)
{
return false;
}
hr = D3DDevice->TestCooperativeLevel();
if (FAILED(hr))
{
if (hr != D3DERR_DEVICENOTRESET || !Reset())
{
Sleep (1);
return false;
}
}
Draw3DPart();
return true;
}
void D3DFB::Draw3DPart()
{
RECT texrect = { 0, 0, Width, Height };
D3DLOCKED_RECT lockrect;
if ((FBWidth == Width && FBHeight == Height &&
SUCCEEDED(FBTexture->LockRect (0, &lockrect, NULL, D3DLOCK_DISCARD))) ||
SUCCEEDED(FBTexture->LockRect (0, &lockrect, &texrect, 0)))
{
if (lockrect.Pitch == Pitch)
{
memcpy (lockrect.pBits, MemBuffer, Width * Height);
}
else
{
BYTE *dest = (BYTE *)lockrect.pBits;
BYTE *src = MemBuffer;
for (int y = 0; y < Height; y++)
{
memcpy (dest, src, Width);
dest += lockrect.Pitch;
src += Pitch;
}
}
FBTexture->UnlockRect (0);
}
if (TrueHeight != Height)
{
// Letterbox! Draw black top and bottom borders.
int topborder = (TrueHeight - Height) / 2;
D3DRECT rects[2] = { { 0, 0, Width, topborder }, { 0, Height + topborder, Width, TrueHeight } };
D3DDevice->Clear (2, rects, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,0,0), 1.f, 0);
}
D3DDevice->BeginScene();
OldRenderTarget = NULL;
if (WindowedRenderTexture != NULL)
{
IDirect3DSurface9 *targetsurf;
if (FAILED(WindowedRenderTexture->GetSurfaceLevel(0, &targetsurf)) ||
FAILED(D3DDevice->GetRenderTarget(0, &OldRenderTarget)) ||
FAILED(D3DDevice->SetRenderTarget(0, targetsurf)))
{
// Setting the render target failed.
OldRenderTarget = NULL;
}
}
SetTexture (0, FBTexture);
SetPaletteTexture(PaletteTexture, 256);
D3DDevice->SetStreamSource (0, VertexBuffer, 0, sizeof(FBVERTEX));
D3DDevice->SetFVF (D3DFVF_FBVERTEX);
D3DDevice->SetPixelShaderConstantF (0, FlashConstants[0], 2);
memcpy(Constant, FlashConstants, sizeof(FlashConstants));
SetAlphaBlend(FALSE);
if (!UseBlendingRect || FlashConstants[1][0] == 1)
{ // The whole screen as a single quad.
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 0, 2);
}
else
{ // The screen split up so that only the 3D view is blended.
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 24, 2); // middle
if (!In2D || 1)
{
// The rest is drawn unblended, so reset the shader constant.
static const float FlashZero[2][4] = { { 0, 0, 0, 0 }, { 1, 1, 1, 1 } };
D3DDevice->SetPixelShaderConstantF (0, FlashZero[0], 2);
memcpy(Constant, FlashZero, sizeof(FlashZero));
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 4, 2); // left
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 8, 2); // right
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 12, 4); // bottom
D3DDevice->DrawPrimitive (D3DPT_TRIANGLEFAN, 18, 4); // top
}
}
}
//==========================================================================
//
// D3DFB :: DoWindowedGamma
//
// Draws the render target texture to the real back buffer using a gamma-
// correcting pixel shader.
//
//==========================================================================
void D3DFB::DoWindowedGamma()
{
if (OldRenderTarget != NULL)
{
D3DDevice->SetRenderTarget(0, OldRenderTarget);
D3DDevice->SetStreamSource(0, VertexBuffer, 0, sizeof(FBVERTEX));
D3DDevice->SetFVF(D3DFVF_FBVERTEX);
SetTexture(0, WindowedRenderTexture);
SetPixelShader(GammaFixerShader);
SetAlphaBlend(FALSE);
D3DDevice->DrawPrimitive(D3DPT_TRIANGLEFAN, 0, 2);
OldRenderTarget = NULL;
}
}
void D3DFB::UploadPalette ()
{
D3DLOCKED_RECT lockrect;
int i;
if (SUCCEEDED(PaletteTexture->LockRect (0, &lockrect, NULL, 0)))
{
BYTE *pix = (BYTE *)lockrect.pBits;
for (i = 0; i < 256; ++i, pix += 4)
{
pix[0] = SourcePalette[i].b;
pix[1] = SourcePalette[i].g;
pix[2] = SourcePalette[i].r;
pix[3] = (i == 0 ? 0 : 255);
// To let masked textures work, the first palette entry's alpha is 0.
}
PaletteTexture->UnlockRect (0);
}
}
PalEntry *D3DFB::GetPalette ()
{
return SourcePalette;
}
void D3DFB::UpdatePalette ()
{
NeedPalUpdate = true;
}
bool D3DFB::SetGamma (float gamma)
{
LOG1 ("SetGamma %g\n", gamma);
Gamma = gamma;
NeedGammaUpdate = true;
return true;
}
bool D3DFB::SetFlash (PalEntry rgb, int amount)
{
FlashColor = rgb;
FlashAmount = amount;
// Fill in the constants for the pixel shader to do linear interpolation between the palette and the flash:
float r = rgb.r / 255.f, g = rgb.g / 255.f, b = rgb.b / 255.f, a = amount / 256.f;
FlashConstants[0][0] = r * a;
FlashConstants[0][1] = g * a;
FlashConstants[0][2] = b * a;
a = 1 - a;
FlashConstants[1][0] = a;
FlashConstants[1][1] = a;
FlashConstants[1][2] = a;
return true;
}
void D3DFB::GetFlash (PalEntry &rgb, int &amount)
{
rgb = FlashColor;
amount = FlashAmount;
}
void D3DFB::GetFlashedPalette (PalEntry pal[256])
{
memcpy (pal, SourcePalette, 256*sizeof(PalEntry));
if (FlashAmount)
{
DoBlending (pal, pal, 256, FlashColor.r, FlashColor.g, FlashColor.b, FlashAmount);
}
}
void D3DFB::SetVSync (bool vsync)
{
if (VSync != vsync)
{
VSync = vsync;
Reset();
}
}
void D3DFB::Blank ()
{
// Only used by movie player, which isn't working with D3D9 yet.
}
void D3DFB::SetBlendingRect(int x1, int y1, int x2, int y2)
{
if (BlendingRect.left != x1 ||
BlendingRect.top != y1 ||
BlendingRect.right != x2 ||
BlendingRect.bottom != y2)
{
BlendingRect.left = x1;
BlendingRect.top = y1;
BlendingRect.right = x2;
BlendingRect.bottom = y2;
if (UploadVertices())
{
UseBlendingRect = ((x1 > 0 || x2 < FBWidth || y1 > 0 || y2 < FBHeight)
&& BlendingRect.left < BlendingRect.right
&& BlendingRect.top < BlendingRect.bottom);
}
}
}
/**************************************************************************/
/* 2D Stuff */
/**************************************************************************/
//==========================================================================
//
// D3DTex Constructor
//
//==========================================================================
D3DTex::D3DTex(FTexture *tex, D3DFB *fb)
{
// Attach to the texture list for the D3DFB
Next = fb->Textures;
if (Next != NULL)
{
Next->Prev = &Next;
}
Prev = &fb->Textures;
fb->Textures = this;
GameTex = tex;
Tex = NULL;
IsGray = false;
Create(fb->D3DDevice);
}
//==========================================================================
//
// D3DTex Destructor
//
//==========================================================================
D3DTex::~D3DTex()
{
if (Tex != NULL)
{
Tex->Release();
Tex = NULL;
}
// Detach from the texture list
*Prev = Next;
if (Next != NULL)
{
Next->Prev = Prev;
}
// Remove link from the game texture
if (GameTex != NULL)
{
GameTex->Native = NULL;
}
}
//==========================================================================
//
// D3DTex :: Create
//
// Creates an IDirect3DTexture9 for the texture and copies the image data
// to it. Note that unlike FTexture, this image is row-major.
//
//==========================================================================
bool D3DTex::Create(IDirect3DDevice9 *D3DDevice)
{
HRESULT hr;
int w, h;
if (Tex != NULL)
{
Tex->Release();
Tex = NULL;
}
w = GameTex->GetWidth();
h = GameTex->GetHeight();
hr = D3DDevice->CreateTexture(w, h, 1, 0,
GetTexFormat(), D3DPOOL_MANAGED, &Tex, NULL);
if (FAILED(hr))
{ // Try again, using power-of-2 sizes
int i;
for (i = 1; i < w; i <<= 1) {} w = i;
for (i = 1; i < h; i <<= 1) {} h = i;
hr = D3DDevice->CreateTexture(w, h, 1, 0,
GetTexFormat(), D3DPOOL_MANAGED, &Tex, NULL);
if (FAILED(hr))
{
return false;
}
}
if (!Update())
{
Tex->Release();
Tex = NULL;
return false;
}
return true;
}
//==========================================================================
//
// D3DTex :: Update
//
// Copies image data from the underlying FTexture to the D3D texture.
//
//==========================================================================
bool D3DTex::Update()
{
D3DSURFACE_DESC desc;
D3DLOCKED_RECT lrect;
RECT rect;
assert(Tex != NULL);
assert(GameTex != NULL);
if (FAILED(Tex->GetLevelDesc(0, &desc)))
{
return false;
}
rect.left = 0;
rect.top = 0;
rect.right = GameTex->GetWidth();
rect.bottom = GameTex->GetHeight();
if (FAILED(Tex->LockRect(0, &lrect, &rect, 0)))
{
return false;
}
GameTex->FillBuffer((BYTE *)lrect.pBits, lrect.Pitch, rect.bottom, ToTexFmt(desc.Format));
Tex->UnlockRect(0);
return true;
}
//==========================================================================
//
// D3DTex :: GetTexFormat
//
// Returns the texture format that would best fit this texture.
//
//==========================================================================
D3DFORMAT D3DTex::GetTexFormat()
{
FTextureFormat fmt = GameTex->GetFormat();
IsGray = false;
switch (fmt)
{
case TEX_Pal: return D3DFMT_L8;
case TEX_Gray: IsGray = true; return D3DFMT_L8;
case TEX_RGB: return D3DFMT_A8R8G8B8;
case TEX_DXT1: return D3DFMT_DXT1;
case TEX_DXT2: return D3DFMT_DXT2;
case TEX_DXT3: return D3DFMT_DXT3;
case TEX_DXT4: return D3DFMT_DXT4;
case TEX_DXT5: return D3DFMT_DXT5;
default: I_FatalError ("GameTex->GetFormat() returned invalid format.");
}
return D3DFMT_L8;
}
//==========================================================================
//
// D3DTex :: ToTexFmt
//
// Converts a D3DFORMAT constant to something the FTexture system
// understands.
//
//==========================================================================
FTextureFormat D3DTex::ToTexFmt(D3DFORMAT fmt)
{
switch (fmt)
{
case D3DFMT_L8: return IsGray ? TEX_Gray : TEX_Pal;
case D3DFMT_A8R8G8B8: return TEX_RGB;
case D3DFMT_DXT1: return TEX_DXT1;
case D3DFMT_DXT2: return TEX_DXT2;
case D3DFMT_DXT3: return TEX_DXT3;
case D3DFMT_DXT4: return TEX_DXT4;
case D3DFMT_DXT5: return TEX_DXT5;
default:
assert(0); // LOL WUT?
return TEX_Pal;
}
}
//==========================================================================
//
// D3DPal Constructor
//
//==========================================================================
D3DPal::D3DPal(FRemapTable *remap, D3DFB *fb)
: Tex(NULL), Remap(remap)
{
int count;
// Attach to the palette list for the D3DFB
Next = fb->Palettes;
if (Next != NULL)
{
Next->Prev = &Next;
}
Prev = &fb->Palettes;
fb->Palettes = this;
// Palette textures must be 256 entries for Shader Model 1.4
if (fb->SM14)
{
count = 256;
}
else
{
int pow2count;
// Round up to the nearest power of 2.
for (pow2count = 1; pow2count < remap->NumEntries; pow2count <<= 1)
{ }
count = pow2count;
}
RoundedPaletteSize = count;
if (SUCCEEDED(fb->D3DDevice->CreateTexture(count, 1, 1, 0,
D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &Tex, NULL)))
{
if (!Update())
{
Tex->Release();
Tex = NULL;
}
}
}
//==========================================================================
//
// D3DPal Destructor
//
//==========================================================================
D3DPal::~D3DPal()
{
if (Tex != NULL)
{
Tex->Release();
Tex = NULL;
}
// Detach from the palette list
*Prev = Next;
if (Next != NULL)
{
Next->Prev = Prev;
}
// Remove link from the remap table
if (Remap != NULL)
{
Remap->Native = NULL;
}
}
//==========================================================================
//
// D3DPal :: Update
//
// Copies the palette to the texture.
//
//==========================================================================
bool D3DPal::Update()
{
D3DLOCKED_RECT lrect;
D3DCOLOR *buff;
const PalEntry *pal;
assert(Tex != NULL);
if (FAILED(Tex->LockRect(0, &lrect, NULL, 0)))
{
return false;
}
buff = (D3DCOLOR *)lrect.pBits;
pal = Remap->Palette;
// Should I allow the source palette to specify alpha values?
buff[0] = D3DCOLOR_ARGB(0, pal[0].r, pal[0].g, pal[0].b);
for (int i = 1; i < Remap->NumEntries; ++i)
{
buff[i] = D3DCOLOR_XRGB(pal[i].r, pal[i].g, pal[i].b);
}
Tex->UnlockRect(0);
return true;
}
//==========================================================================
//
// D3DFB :: Begin2D
//
// Begins 2D mode drawing operations. In particular, DrawTexture is
// rerouted to use Direct3D instead of the software renderer.
//
//==========================================================================
CVAR(Bool,test2d,true,0)
bool D3DFB::Begin2D()
{
if (!test2d) return false;
if (In2D)
{
return true;
}
In2D = 1;
Update();
In2D = 2;
return true;
}
//==========================================================================
//
// D3DFB :: CreateTexture
//
// Returns a native texture that wraps a FTexture.
//
//==========================================================================
FNativeTexture *D3DFB::CreateTexture(FTexture *gametex)
{
D3DTex *tex = new D3DTex(gametex, this);
if (tex->Tex == NULL)
{
delete tex;
return NULL;
}
return tex;
}
//==========================================================================
//
// D3DFB :: CreatePalette
//
// Returns a native texture that contains a palette.
//
//==========================================================================
FNativeTexture *D3DFB::CreatePalette(FRemapTable *remap)
{
D3DPal *tex = new D3DPal(remap, this);
if (tex->Tex == NULL)
{
delete tex;
return NULL;
}
return tex;
}
//==========================================================================
//
// D3DFB :: Clear
//
// Fills the specified region with a color.
//
//==========================================================================
void D3DFB::Clear (int left, int top, int right, int bottom, int palcolor, uint32 color)
{
if (In2D < 2)
{
Super::Clear(left, top, right, bottom, palcolor, color);
return;
}
if (palcolor >= 0)
{
color = GPalette.BaseColors[palcolor];
}
else if (APART(color) < 255)
{
Dim(color, APART(color)/255.f, left, top, right - left, bottom - top);
return;
}
D3DRECT rect = { left, top, right, bottom };
D3DDevice->Clear(1, &rect, D3DCLEAR_TARGET, color | 0xFF000000, 1.f, 0);
}
//==========================================================================
//
// D3DFB :: Dim
//
//==========================================================================
void D3DFB::Dim (PalEntry color, float amount, int x1, int y1, int w, int h)
{
if (amount <= 0)
return;
if (In2D < 2)
{
Super::Dim(color, amount, x1, y1, w, h);
return;
}
if (amount >= 1)
{
D3DRECT rect = { x1, y1, x1 + w, y1 + h };
D3DDevice->Clear(1, &rect, D3DCLEAR_TARGET, color | 0xFF000000, 1.f, 0);
}
else
{
FBVERTEX verts[4] =
{
{ x1-0.5f, y1-0.5f, 0.5f, 1, 0, 0 },
{ x1+w-0.5f, y1-0.5f, 0.5f, 1, 0, 0 },
{ x1+w-0.5f, y1+h-0.5f, 0.5f, 1, 0, 0 },
{ x1-0.5f, y1+h-0.5f, 0.5f, 1, 0, 0 }
};
SetAlphaBlend(TRUE, D3DBLEND_SRCALPHA, D3DBLEND_INVSRCALPHA);
SetPixelShader(DimShader);
SetConstant(1, color.r/255.f, color.g/255.f, color.b/255.f, amount);
D3DDevice->DrawPrimitiveUP(D3DPT_TRIANGLEFAN, 2, &verts, sizeof(FBVERTEX));
}
}
//==========================================================================
//
// D3DFB :: DrawTextureV
//
// If not in 2D mode, just call the normal software version.
// If in 2D mode, then use Direct3D calls to perform the drawing.
//
//==========================================================================
void STACK_ARGS D3DFB::DrawTextureV (FTexture *img, int x, int y, uint32 tags_first, va_list tags)
{
if (In2D < 2)
{
Super::DrawTextureV(img, x, y, tags_first, tags);
return;
}
DrawParms parms;
if (!ParseDrawTextureTags(img, x, y, tags_first, tags, &parms, true))
{
return;
}
D3DTex *tex = static_cast<D3DTex *>(img->GetNative());
if (tex == NULL)
{
assert(tex != NULL);
return;
}
float xscale = float(parms.destwidth) / parms.texwidth / 65536.f;
float yscale = float(parms.destheight) / parms.texheight / 65536.f;
float x0 = float(parms.x) / 65536.f - float(parms.left) * xscale;
float y0 = float(parms.y) / 65536.f - float(parms.top) * yscale;
float x1 = x0 + float(parms.destwidth) / 65536.f;
float y1 = y0 + float(parms.destheight) / 65536.f;
float u0 = 0.f;
float v0 = 0.f;
float u1 = 1.f;
float v1 = 1.f;
float uscale = 1.f / parms.texwidth / u1;
float vscale = 1.f / parms.texheight / v1 / yscale;
if (y0 < parms.uclip)
{
v0 += float(parms.uclip - y0) * vscale;
y0 = float(parms.uclip);
}
if (y1 > parms.dclip)
{
v1 -= float(y1 - parms.dclip) * vscale;
y1 = float(parms.dclip);
}
if (parms.flipX)
{
swap(u0, u1);
}
if (parms.windowleft > 0 || parms.windowright < parms.texwidth)
{
x0 += parms.windowleft * xscale;
u0 += parms.windowleft * uscale;
x1 -= (parms.texwidth - parms.windowright) * xscale;
u1 -= (parms.texwidth - parms.windowright) * uscale;
}
if (x0 < parms.lclip)
{
u0 += float(parms.lclip - x0) * uscale / xscale;
x0 = float(parms.lclip);
}
if (x1 > parms.rclip)
{
u1 -= float(x1 - parms.rclip) * uscale / xscale;
x1 = float(parms.rclip);
}
x0 -= 0.5f;
y0 -= 0.5f;
x1 -= 0.5f;
y1 -= 0.5f;
FBVERTEX verts[4] =
{
{ x0, y0, 0.5f, 1.f, u0, v0 },
{ x1, y0, 0.5f, 1.f, u1, v0 },
{ x1, y1, 0.5f, 1.f, u1, v1 },
{ x0, y1, 0.5f, 1.f, u0, v1 }
};
if (!SetStyle(tex, parms))
{
return;
}
SetTexture(0, tex->Tex);
D3DDevice->DrawPrimitiveUP(D3DPT_TRIANGLEFAN, 2, &verts, sizeof(FBVERTEX));
}
//==========================================================================
//
// D3DFB :: SetStyle
//
// Patterned after R_SetPatchStyle.
//
//==========================================================================
bool D3DFB::SetStyle(D3DTex *tex, DrawParms &parms)
{
D3DFORMAT fmt = tex->GetTexFormat();
ERenderStyle style = parms.style;
D3DBLEND fglevel, bglevel;
float alpha;
bool stencilling;
alpha = clamp<fixed_t> (parms.alpha, 0, FRACUNIT) / 65536.f;
if (style == STYLE_OptFuzzy)
{
style = STYLE_Translucent;
}
else if (style == STYLE_SoulTrans)
{
style = STYLE_Translucent;
alpha = transsouls;
}
// FIXME: STYLE_Fuzzy is not written
if (style == STYLE_Fuzzy)
{
style = STYLE_Translucent;
alpha = transsouls;
}
stencilling = false;
switch (style)
{
// Special modes
case STYLE_Shaded:
if (alpha > 0)
{
SetConstant(1, RPART(parms.fillcolor)/255.f, GPART(parms.fillcolor)/255.f, BPART(parms.fillcolor)/255.f, alpha);
SetPaletteTexture(ShadedPaletteTexture, 256);
SetAlphaBlend(TRUE, D3DBLEND_SRCALPHA, D3DBLEND_INVSRCALPHA);
return true;
}
return false;
// Standard modes
case STYLE_Stencil:
stencilling = true;
case STYLE_Normal:
fglevel = D3DBLEND_SRCALPHA;
bglevel = D3DBLEND_INVSRCALPHA;
alpha = 1;
break;
case STYLE_TranslucentStencil:
stencilling = true;
case STYLE_Translucent:
fglevel = D3DBLEND_SRCALPHA;
bglevel = D3DBLEND_INVSRCALPHA;
if (alpha == 0)
{
return false;
}
if (alpha == 1 && style == STYLE_Translucent)
{
style = STYLE_Normal;
}
break;
case STYLE_Add:
fglevel = D3DBLEND_SRCALPHA;
bglevel = D3DBLEND_ONE;
break;
default:
return false;
}
// Masking can only be turned off for STYLE_Normal, because it requires
// turning off the alpha blend.
if (!parms.masked && style == STYLE_Normal)
{
SetAlphaBlend(FALSE);
SetColorOverlay(parms.colorOverlay, 1);
if (fmt == D3DFMT_L8 && !tex->IsGray)
{
SetPaletteTexture(PaletteTexture, 256);
SetPixelShader(PalTexShader);
}
else
{
SetPixelShader(PlainShader);
}
}
else
{
SetAlphaBlend(TRUE, fglevel, bglevel);
if (!stencilling)
{
if (fmt == D3DFMT_L8)
{
if (parms.remap != NULL)
{
D3DPal *pal = reinterpret_cast<D3DPal *>(parms.remap->GetNative());
SetPaletteTexture(pal->Tex, pal->RoundedPaletteSize);
}
else if (tex->IsGray)
{
SetPixelShader(PlainShader);
}
else
{
SetPaletteTexture(PaletteTexture, 256);
}
SetPixelShader(PalTexShader);
}
else
{
SetPixelShader(PlainShader);
}
SetColorOverlay(parms.colorOverlay, alpha);
}
else
{
SetConstant(1,
RPART(parms.fillcolor)/255.f,
GPART(parms.fillcolor)/255.f,
BPART(parms.fillcolor)/255.f, alpha);
if (fmt == D3DFMT_L8)
{
SetPaletteTexture(StencilPaletteTexture, 256);
SetPixelShader(PalTexShader);
}
else
{
SetPixelShader(PlainStencilShader);
}
}
}
return true;
}
void D3DFB::SetColorOverlay(DWORD color, float alpha)
{
if (APART(color) != 0)
{
float a = 255.f / APART(color);
float r = RPART(color) * a;
float g = GPART(color) * a;
float b = BPART(color) * a;
SetConstant(0, r, g, b, 0);
a = 1 - 1 / a;
SetConstant(1, a, a, a, alpha);
}
else
{
SetConstant(0, 0, 0, 0, 0);
SetConstant(1, 1, 1, 1, alpha);
}
}
void D3DFB::SetAlphaBlend(BOOL enabled, D3DBLEND srcblend, D3DBLEND destblend)
{
if (!enabled)
{ // Disable alpha blend
if (AlphaBlendEnabled)
{
AlphaBlendEnabled = FALSE;
D3DDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
}
}
else
{ // Enable alpha blend
assert(srcblend != 0);
assert(destblend != 0);
if (!AlphaBlendEnabled)
{
AlphaBlendEnabled = TRUE;
D3DDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
}
if (AlphaSrcBlend != srcblend)
{
AlphaSrcBlend = srcblend;
D3DDevice->SetRenderState(D3DRS_SRCBLEND, srcblend);
}
if (AlphaDestBlend != destblend)
{
AlphaDestBlend = destblend;
D3DDevice->SetRenderState(D3DRS_DESTBLEND, destblend);
}
}
}
void D3DFB::SetConstant(int cnum, float r, float g, float b, float a)
{
if (Constant[cnum][0] != r ||
Constant[cnum][1] != g ||
Constant[cnum][2] != b ||
Constant[cnum][3] != a)
{
Constant[cnum][0] = r;
Constant[cnum][1] = g;
Constant[cnum][2] = b;
Constant[cnum][3] = a;
D3DDevice->SetPixelShaderConstantF(cnum, Constant[cnum], 1);
}
}
void D3DFB::SetPixelShader(IDirect3DPixelShader9 *shader)
{
if (CurPixelShader != shader)
{
CurPixelShader = shader;
D3DDevice->SetPixelShader(shader);
}
}
void D3DFB::SetTexture(int tnum, IDirect3DTexture9 *texture)
{
if (Texture[tnum] != texture)
{
Texture[tnum] = texture;
D3DDevice->SetTexture(tnum, texture);
}
}
void D3DFB::SetPaletteTexture(IDirect3DTexture9 *texture, int count)
{
if (count == 256 || SM14)
{
// Shader Model 1.4 only uses 256-color palettes.
SetConstant(2, 255 / 256.f, 0.5f / 256.f, 0, 0);
}
else
{
// The pixel shader receives color indexes in the range [0.0,1.0].
// The palette texture is also addressed in the range [0.0,1.0],
// HOWEVER the coordinate 1.0 is the right edge of the texture and
// not actually the texture itself. We need to scale and shift
// the palette indexes so they lie exactly in the center of each
// texel. For a normal palette with 256 entries, that means the
// range we use should be [0.5,255.5], adjusted so the coordinate
// is still with [0.0,1.0].
//
// The constant register c2 is used to hold the multiplier in the
// x part and the adder in the y part.
float fcount = 1 / float(count);
SetConstant(2, 255 * fcount, 0.5f * fcount, 0, 0);
}
SetTexture(1, texture);
SetPixelShader(PalTexShader);
}
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