state.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

    glPointSize(tmpvalue.f);
    checkGLcall("glPointSize(...);");
}

static void state_psizemin(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    union {
        DWORD d;
        float f;
    } tmpvalue;

    tmpvalue.d = stateblock->renderState[WINED3DRS_POINTSIZE_MIN];
    if(GL_SUPPORT(ARB_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfARB)(GL_POINT_SIZE_MIN_ARB, tmpvalue.f);
        checkGLcall("glPointParameterfARB(...");
    }
    else if(GL_SUPPORT(EXT_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfEXT)(GL_POINT_SIZE_MIN_EXT, tmpvalue.f);
        checkGLcall("glPointParameterfEXT(...);");
    } else if(tmpvalue.f != 1.0) {
        FIXME("WINED3DRS_POINTSIZE_MIN not supported on this opengl, value is %f\n", tmpvalue.f);
    }
}

static void state_psizemax(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    union {
        DWORD d;
        float f;
    } tmpvalue;

    tmpvalue.d = stateblock->renderState[WINED3DRS_POINTSIZE_MAX];
    if(GL_SUPPORT(ARB_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfARB)(GL_POINT_SIZE_MAX_ARB, tmpvalue.f);
        checkGLcall("glPointParameterfARB(...");
    }
    else if(GL_SUPPORT(EXT_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfEXT)(GL_POINT_SIZE_MAX_EXT, tmpvalue.f);
        checkGLcall("glPointParameterfEXT(...);");
    } else if(tmpvalue.f != 64.0) {
        FIXME("WINED3DRS_POINTSIZE_MAX not supported on this opengl, value is %f\n", tmpvalue.f);
    }
}

static void state_pscale(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    /* TODO: Group this with the viewport */
    /*
     * POINTSCALEENABLE controls how point size value is treated. If set to
     * true, the point size is scaled with respect to height of viewport.
     * When set to false point size is in pixels.
     *
     * http://msdn.microsoft.com/library/en-us/directx9_c/point_sprites.asp
     */

    /* Default values */
    GLfloat att[3] = {1.0f, 0.0f, 0.0f};

    /*
     * Minimum valid point size for OpenGL is 1.0f. For Direct3D it is 0.0f.
     * This means that OpenGL will clamp really small point sizes to 1.0f.
     * To correct for this we need to multiply by the scale factor when sizes
     * are less than 1.0f. scale_factor =  1.0f / point_size.
     */
    GLfloat pointSize = *((float*)&stateblock->renderState[WINED3DRS_POINTSIZE]);
    if(pointSize > 0.0f) {
        GLfloat scaleFactor;

        if(pointSize < 1.0f) {
            scaleFactor = pointSize * pointSize;
        } else {
            scaleFactor = 1.0f;
        }

        if(stateblock->renderState[WINED3DRS_POINTSCALEENABLE]) {
            att[0] = *((float*)&stateblock->renderState[WINED3DRS_POINTSCALE_A]) /
                    (stateblock->viewport.Height * stateblock->viewport.Height * scaleFactor);
            att[1] = *((float*)&stateblock->renderState[WINED3DRS_POINTSCALE_B]) /
                    (stateblock->viewport.Height * stateblock->viewport.Height * scaleFactor);
            att[2] = *((float*)&stateblock->renderState[WINED3DRS_POINTSCALE_C]) /
                    (stateblock->viewport.Height * stateblock->viewport.Height * scaleFactor);
        }
    }

    if(GL_SUPPORT(ARB_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfvARB)(GL_POINT_DISTANCE_ATTENUATION_ARB, att);
        checkGLcall("glPointParameterfvARB(GL_DISTANCE_ATTENUATION_ARB, ...");
    }
    else if(GL_SUPPORT(EXT_POINT_PARAMETERS)) {
        GL_EXTCALL(glPointParameterfvEXT)(GL_DISTANCE_ATTENUATION_EXT, att);
        checkGLcall("glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, ...");
    } else {
        TRACE("POINT_PARAMETERS not supported in this version of opengl\n");
    }
}

static void state_colorwrite(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    DWORD Value = stateblock->renderState[WINED3DRS_COLORWRITEENABLE];

    TRACE("Color mask: r(%d) g(%d) b(%d) a(%d)\n",
        Value & WINED3DCOLORWRITEENABLE_RED   ? 1 : 0,
        Value & WINED3DCOLORWRITEENABLE_GREEN ? 1 : 0,
        Value & WINED3DCOLORWRITEENABLE_BLUE  ? 1 : 0,
        Value & WINED3DCOLORWRITEENABLE_ALPHA ? 1 : 0);
    glColorMask(Value & WINED3DCOLORWRITEENABLE_RED   ? GL_TRUE : GL_FALSE,
                Value & WINED3DCOLORWRITEENABLE_GREEN ? GL_TRUE : GL_FALSE,
                Value & WINED3DCOLORWRITEENABLE_BLUE  ? GL_TRUE : GL_FALSE,
                Value & WINED3DCOLORWRITEENABLE_ALPHA ? GL_TRUE : GL_FALSE);
    checkGLcall("glColorMask(...)");

    /* depends on WINED3DRS_COLORWRITEENABLE. */
    if(stateblock->renderState[WINED3DRS_COLORWRITEENABLE1] != 0x0000000F ||
       stateblock->renderState[WINED3DRS_COLORWRITEENABLE2] != 0x0000000F ||
       stateblock->renderState[WINED3DRS_COLORWRITEENABLE3] != 0x0000000F ) {
        ERR("(WINED3DRS_COLORWRITEENABLE1/2/3,%d,%d,%d) not yet implemented. Missing of cap D3DPMISCCAPS_INDEPENDENTWRITEMASKS wasn't honored?\n",
            stateblock->renderState[WINED3DRS_COLORWRITEENABLE1],
            stateblock->renderState[WINED3DRS_COLORWRITEENABLE2],
            stateblock->renderState[WINED3DRS_COLORWRITEENABLE3]);
    }
}

static void state_localviewer(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    if(stateblock->renderState[WINED3DRS_LOCALVIEWER]) {
        glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
        checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1)");
    } else {
        glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 0);
        checkGLcall("glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 0)");
    }
}

static void state_lastpixel(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    if(stateblock->renderState[WINED3DRS_LASTPIXEL]) {
        TRACE("Last Pixel Drawing Enabled\n");
    } else {
        static BOOL first = TRUE;
        if(first) {
            FIXME("Last Pixel Drawing Disabled, not handled yet\n");
            first = FALSE;
        } else {
            TRACE("Last Pixel Drawing Disabled, not handled yet\n");
        }
    }
}

static void state_pointsprite(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    /* TODO: NV_POINT_SPRITE */
    if (!GL_SUPPORT(ARB_POINT_SPRITE)) {
        TRACE("Point sprites not supported\n");
        return;
    }

    if (stateblock->renderState[WINED3DRS_POINTSPRITEENABLE]) {
        glEnable(GL_POINT_SPRITE_ARB);
        checkGLcall("glEnable(GL_POINT_SPRITE_ARB)\n");
    } else {
        glDisable(GL_POINT_SPRITE_ARB);
        checkGLcall("glDisable(GL_POINT_SPRITE_ARB)\n");
    }
}

static void state_wrap(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    /**
     http://www.cosc.brocku.ca/Offerings/3P98/course/lectures/texture/
     http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/directx9_c/directx/graphics/programmingguide/FixedFunction/Textures/texturewrapping.asp
     http://www.gamedev.net/reference/programming/features/rendererdll3/page2.asp
     Descussion that ways to turn on WRAPing to solve an opengl conversion problem.
     http://www.flipcode.org/cgi-bin/fcmsg.cgi?thread_show=10248

     so far as I can tell, wrapping and texture-coordinate generate go hand in hand,
     */
    TRACE("Stub\n");
    if(stateblock->renderState[WINED3DRS_WRAP0] ||
       stateblock->renderState[WINED3DRS_WRAP1] ||
       stateblock->renderState[WINED3DRS_WRAP2] ||
       stateblock->renderState[WINED3DRS_WRAP3] ||
       stateblock->renderState[WINED3DRS_WRAP4] ||
       stateblock->renderState[WINED3DRS_WRAP5] ||
       stateblock->renderState[WINED3DRS_WRAP6] ||
       stateblock->renderState[WINED3DRS_WRAP7] ||
       stateblock->renderState[WINED3DRS_WRAP8] ||
       stateblock->renderState[WINED3DRS_WRAP9] ||
       stateblock->renderState[WINED3DRS_WRAP10] ||
       stateblock->renderState[WINED3DRS_WRAP11] ||
       stateblock->renderState[WINED3DRS_WRAP12] ||
       stateblock->renderState[WINED3DRS_WRAP13] ||
       stateblock->renderState[WINED3DRS_WRAP14] ||
       stateblock->renderState[WINED3DRS_WRAP15] ) {
        FIXME("(WINED3DRS_WRAP0) Texture wraping not yet supported\n");
    }
}

static void state_multisampleaa(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    if( GL_SUPPORT(ARB_MULTISAMPLE) ) {
        if(stateblock->renderState[WINED3DRS_MULTISAMPLEANTIALIAS]) {
            glEnable(GL_MULTISAMPLE_ARB);
            checkGLcall("glEnable(GL_MULTISAMPLE_ARB)");
        } else {
            glDisable(GL_MULTISAMPLE_ARB);
            checkGLcall("glDisable(GL_MULTISAMPLE_ARB)");
        }
    } else {
        if(stateblock->renderState[WINED3DRS_MULTISAMPLEANTIALIAS]) {
            WARN("Multisample antialiasing not supported by gl\n");
        }
    }
}

static void state_scissor(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    if(stateblock->renderState[WINED3DRS_SCISSORTESTENABLE]) {
        glEnable(GL_SCISSOR_TEST);
        checkGLcall("glEnable(GL_SCISSOR_TEST)");
    } else {
        glDisable(GL_SCISSOR_TEST);
        checkGLcall("glDisable(GL_SCISSOR_TEST)");
    }
}

static void state_depthbias(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    union {
        DWORD d;
        float f;
    } tmpvalue;

    if(stateblock->renderState[WINED3DRS_SLOPESCALEDEPTHBIAS] ||
       stateblock->renderState[WINED3DRS_DEPTHBIAS]) {
        tmpvalue.d = stateblock->renderState[WINED3DRS_SLOPESCALEDEPTHBIAS];
        glEnable(GL_POLYGON_OFFSET_FILL);
        checkGLcall("glEnable(GL_POLYGON_OFFSET_FILL)");
        glPolygonOffset(tmpvalue.f, *((float*)&stateblock->renderState[WINED3DRS_DEPTHBIAS]));
        checkGLcall("glPolygonOffset(...)");
    } else {
        glDisable(GL_POLYGON_OFFSET_FILL);
        checkGLcall("glDisable(GL_POLYGON_OFFSET_FILL)");
    }
}

static void state_perspective(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    if (stateblock->renderState[WINED3DRS_TEXTUREPERSPECTIVE]) {
        glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
        checkGLcall("glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)");
    } else {
        glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
        checkGLcall("glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST)");
    }
}

static void state_stippledalpha(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_STIPPLEDALPHA])
        FIXME(" Stippled Alpha not supported yet.\n");
}

static void state_antialias(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_ANTIALIAS])
        FIXME(" Antialias not supported yet.\n");
}

static void state_multisampmask(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_MULTISAMPLEMASK] != 0xFFFFFFFF)
        FIXME("(WINED3DRS_MULTISAMPLEMASK,%d) not yet implemented\n", stateblock->renderState[WINED3DRS_MULTISAMPLEMASK]);
}

static void state_patchedgestyle(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_PATCHEDGESTYLE] != WINED3DPATCHEDGE_DISCRETE)
        FIXME("(WINED3DRS_PATCHEDGESTYLE,%d) not yet implemented\n", stateblock->renderState[WINED3DRS_PATCHEDGESTYLE]);
}

static void state_patchsegments(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    union {
        DWORD d;
        float f;
    } tmpvalue;
    tmpvalue.f = 1.0f;

    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_PATCHSEGMENTS] != tmpvalue.d)
    {
        static BOOL displayed = FALSE;

        tmpvalue.d = stateblock->renderState[WINED3DRS_PATCHSEGMENTS];
        if(!displayed)
            FIXME("(WINED3DRS_PATCHSEGMENTS,%f) not yet implemented\n", tmpvalue.f);

        displayed = TRUE;
    }
}

static void state_positiondegree(DWORD state, IWineD3DStateBlockImpl *stateblock, WineD3DContext *context) {
    TRACE("Stub\n");
    if (stateblock->renderState[WINED3DRS_POSITIONDEGREE] != WINED3DDEGREE_CU