pixelshader.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

/*
 * shaders implementation
 *
 * Copyright 2002-2003 Jason Edmeades
 * Copyright 2002-2003 Raphael Junqueira
 * Copyright 2004 Christian Costa
 * Copyright 2005 Oliver Stieber
 * Copyright 2006 Ivan Gyurdiev
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"

#include <math.h>
#include <stdio.h>

#include "wined3d_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(d3d_shader);

#define GLINFO_LOCATION ((IWineD3DDeviceImpl *) This->baseShader.device)->adapter->gl_info

#if 0 /* Must not be 1 in cvs version */
# define PSTRACE(A) TRACE A
# define TRACE_VSVECTOR(name) TRACE( #name "=(%f, %f, %f, %f)\n", name.x, name.y, name.z, name.w)
#else
# define PSTRACE(A)
# define TRACE_VSVECTOR(name)
#endif

#define GLNAME_REQUIRE_GLSL  ((const char *)1)
/* *******************************************
   IWineD3DPixelShader IUnknown parts follow
   ******************************************* */
static HRESULT  WINAPI IWineD3DPixelShaderImpl_QueryInterface(IWineD3DPixelShader *iface, REFIID riid, LPVOID *ppobj)
{
    IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)iface;
    TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(riid),ppobj);
    if (IsEqualGUID(riid, &IID_IUnknown)
        || IsEqualGUID(riid, &IID_IWineD3DBase)
        || IsEqualGUID(riid, &IID_IWineD3DBaseShader)
        || IsEqualGUID(riid, &IID_IWineD3DPixelShader)) {
        IUnknown_AddRef(iface);
        *ppobj = This;
        return S_OK;
    }
    *ppobj = NULL;
    return E_NOINTERFACE;
}

static ULONG  WINAPI IWineD3DPixelShaderImpl_AddRef(IWineD3DPixelShader *iface) {
    IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)iface;
    TRACE("(%p) : AddRef increasing from %d\n", This, This->ref);
    return InterlockedIncrement(&This->ref);
}

static ULONG  WINAPI IWineD3DPixelShaderImpl_Release(IWineD3DPixelShader *iface) {
    IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)iface;
    ULONG ref;
    TRACE("(%p) : Releasing from %d\n", This, This->ref);
    ref = InterlockedDecrement(&This->ref);
    if (ref == 0) {
        /* SetPixelShader does not AddRef. If the bound pixel shader is destroyed, the pointer in the stateblock remains
         * unchanged. Drawing again will most likely crash, even on windows. A problem can occur if the application creates
         * a new pixel shader which resides at the same address. Then SetPixelShader will think it is a NOP change, and won't
         * dirtify the state.
         *
         * Do NOT call GetPixelShader here. This will addRef and cause a recursion. And do NOT set the pixel shader to NULL,
         * Windows does not do that(Although no test exists since they'd crash randomly)
         */
        if(iface == ((IWineD3DDeviceImpl *) This->baseShader.device)->stateBlock->pixelShader) {
            IWineD3DDeviceImpl_MarkStateDirty((IWineD3DDeviceImpl *) This->baseShader.device, STATE_PIXELSHADER);
        }

        if (This->baseShader.shader_mode == SHADER_GLSL && This->baseShader.prgId != 0) {
            struct list *linked_programs = &This->baseShader.linked_programs;

            TRACE("Deleting linked programs\n");
            if (linked_programs->next) {
                struct glsl_shader_prog_link *entry, *entry2;
                LIST_FOR_EACH_ENTRY_SAFE(entry, entry2, linked_programs, struct glsl_shader_prog_link, pshader_entry) {
                    delete_glsl_program_entry(This->baseShader.device, entry);
                }
            }

            TRACE("Deleting shader object %u\n", This->baseShader.prgId);
            GL_EXTCALL(glDeleteObjectARB(This->baseShader.prgId));
            checkGLcall("glDeleteObjectARB");
        }
        shader_delete_constant_list(&This->baseShader.constantsF);
        shader_delete_constant_list(&This->baseShader.constantsB);
        shader_delete_constant_list(&This->baseShader.constantsI);
        HeapFree(GetProcessHeap(), 0, This);
    }
    return ref;
}

/* *******************************************
   IWineD3DPixelShader IWineD3DPixelShader parts follow
   ******************************************* */

static HRESULT  WINAPI IWineD3DPixelShaderImpl_GetParent(IWineD3DPixelShader *iface, IUnknown** parent){
    IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)iface;

    *parent = This->parent;
    IUnknown_AddRef(*parent);
    TRACE("(%p) : returning %p\n", This, *parent);
    return WINED3D_OK;
}

static HRESULT  WINAPI IWineD3DPixelShaderImpl_GetDevice(IWineD3DPixelShader* iface, IWineD3DDevice **pDevice){
    IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)iface;
    IWineD3DDevice_AddRef(This->baseShader.device);
    *pDevice = This->baseShader.device;
    TRACE("(%p) returning %p\n", This, *pDevice);
    return WINED3D_OK;
}


static HRESULT  WINAPI IWineD3DPixelShaderImpl_GetFunction(IWineD3DPixelShader* impl, VOID* pData, UINT* pSizeOfData) {
  IWineD3DPixelShaderImpl *This = (IWineD3DPixelShaderImpl *)impl;
  TRACE("(%p) : pData(%p), pSizeOfData(%p)\n", This, pData, pSizeOfData);

  if (NULL == pData) {
    *pSizeOfData = This->baseShader.functionLength;
    return WINED3D_OK;
  }
  if (*pSizeOfData < This->baseShader.functionLength) {
    /* MSDN claims (for d3d8 at least) that if *pSizeOfData is smaller
     * than the required size we should write the required size and
     * return D3DERR_MOREDATA. That's not actually true. */
    return WINED3DERR_INVALIDCALL;
  }
  if (NULL == This->baseShader.function) { /* no function defined */
    TRACE("(%p) : GetFunction no User Function defined using NULL to %p\n", This, pData);
    (*(DWORD **) pData) = NULL;
  } else {
    if (This->baseShader.functionLength == 0) {

    }
    TRACE("(%p) : GetFunction copying to %p\n", This, pData);
    memcpy(pData, This->baseShader.function, This->baseShader.functionLength);
  }
  return WINED3D_OK;
}

CONST SHADER_OPCODE IWineD3DPixelShaderImpl_shader_ins[] = {
    /* Arithmethic */
    {WINED3DSIO_NOP,  "nop", "NOP", 0, 0, pshader_hw_map2gl, NULL, 0, 0},
    {WINED3DSIO_MOV,  "mov", "MOV", 1, 2, pshader_hw_map2gl, shader_glsl_mov, 0, 0},
    {WINED3DSIO_ADD,  "add", "ADD", 1, 3, pshader_hw_map2gl, shader_glsl_arith, 0, 0},
    {WINED3DSIO_SUB,  "sub", "SUB", 1, 3, pshader_hw_map2gl, shader_glsl_arith, 0, 0},
    {WINED3DSIO_MAD,  "mad", "MAD", 1, 4, pshader_hw_map2gl, shader_glsl_mad, 0, 0},
    {WINED3DSIO_MUL,  "mul", "MUL", 1, 3, pshader_hw_map2gl, shader_glsl_arith, 0, 0},
    {WINED3DSIO_RCP,  "rcp", "RCP",  1, 2, pshader_hw_map2gl, shader_glsl_rcp, 0, 0},
    {WINED3DSIO_RSQ,  "rsq",  "RSQ", 1, 2, pshader_hw_map2gl, shader_glsl_rsq, 0, 0},
    {WINED3DSIO_DP3,  "dp3",  "DP3", 1, 3, pshader_hw_map2gl, shader_glsl_dot, 0, 0},
    {WINED3DSIO_DP4,  "dp4",  "DP4", 1, 3, pshader_hw_map2gl, shader_glsl_dot, 0, 0},
    {WINED3DSIO_MIN,  "min",  "MIN", 1, 3, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_MAX,  "max",  "MAX", 1, 3, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_SLT,  "slt",  "SLT", 1, 3, pshader_hw_map2gl, shader_glsl_compare, 0, 0},
    {WINED3DSIO_SGE,  "sge",  "SGE", 1, 3, pshader_hw_map2gl, shader_glsl_compare, 0, 0},
    {WINED3DSIO_ABS,  "abs",  "ABS", 1, 2, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_EXP,  "exp",  "EX2", 1, 2, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_LOG,  "log",  "LG2", 1, 2, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_EXPP, "expp", "EXP", 1, 2, pshader_hw_map2gl, shader_glsl_expp, 0, 0},
    {WINED3DSIO_LOGP, "logp", "LOG", 1, 2, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_DST,  "dst",  "DST", 1, 3, pshader_hw_map2gl, shader_glsl_dst, 0, 0},
    {WINED3DSIO_LRP,  "lrp",  "LRP", 1, 4, pshader_hw_map2gl, shader_glsl_lrp, 0, 0},
    {WINED3DSIO_FRC,  "frc",  "FRC", 1, 2, pshader_hw_map2gl, shader_glsl_map2gl, 0, 0},
    {WINED3DSIO_CND,  "cnd",  NULL, 1, 4, pshader_hw_cnd, shader_glsl_cnd, WINED3DPS_VERSION(1,0), WINED3DPS_VERSION(1,4)},
    {WINED3DSIO_CMP,  "cmp",  NULL, 1, 4, pshader_hw_cmp, shader_glsl_cmp, WINED3DPS_VERSION(1,2), WINED3DPS_VERSION(3,0)},
    {WINED3DSIO_POW,  "pow",  "POW", 1, 3, NULL, shader_glsl_pow, 0, 0},
    {WINED3DSIO_CRS,  "crs",  "XPS", 1, 3, NULL, shader_glsl_cross, 0, 0},
    /* TODO: xyz normalise can be performed as VS_ARB using one temporary register,
        DP3 tmp , vec, vec;
        RSQ tmp, tmp.x;
        MUL vec.xyz, vec, tmp;
    but I think this is better because it accounts for w properly.
        DP3 tmp , vec, vec;
        RSQ tmp, tmp.x;
        MUL vec, vec, tmp;
    */