C++ Call::arg方法代码示例

static void retrace_glXMakeCurrent(Trace::Call &call) {
    glws::Drawable *new_drawable = getDrawable(call.arg(1).toUInt());
    glws::Context *new_context = getContext(call.arg(2).toUIntPtr());

    if (new_drawable == drawable && new_context == context) {
        return;
    }

    if (drawable && context) {
        glFlush();
        if (!double_buffer) {
            frame_complete(call.no);
        }
    }

    bool result = ws->makeCurrent(new_drawable, new_context);

    if (new_drawable && new_context && result) {
        drawable = new_drawable;
        context = new_context;
    } else {
        drawable = NULL;
        context = NULL;
    }
}

static void retrace_wglShareLists(trace::Call &call) {
    bool ret = call.ret->toBool();
    if (!ret) {
        return;
    }

    unsigned long long hglrc1 = call.arg(0).toUIntPtr();
    unsigned long long hglrc2 = call.arg(1).toUIntPtr();

    Context *share_context = getContext(hglrc1);
    Context *old_context = getContext(hglrc2);

    glfeatures::Profile profile = old_context->profile();
    Context *new_context = glretrace::createContext(share_context, profile);
    if (new_context) {
        glretrace::Context *currentContext = glretrace::getCurrentContext();
        if (currentContext == old_context) {
            glretrace::makeCurrent(call, currentContext->drawable, new_context);
        }

        context_map[hglrc2] = new_context;
        
        old_context->release();
    }
}

static void retrace_glXCreateContextAttribsARB(Trace::Call &call) {
    unsigned long long orig_context = call.ret->toUIntPtr();
    glws::Context *share_context = getContext(call.arg(2).toUIntPtr());

    glws::Context *context = ws->createContext(glretrace::visual, share_context);
    context_map[orig_context] = context;
}

static void retrace_eglBindAPI(trace::Call &call) {
    if (!call.ret->toBool()) {
        return;
    }

    current_api = call.arg(0).toUInt();
}

static void retrace_wglSetPbufferAttribARB(trace::Call &call) {
    glws::Drawable *pbuffer = pbuffer_map[call.arg(0).toUIntPtr()];
    const trace::Value * attribList = &call.arg(1);

    // call the window system's setPbufferAttrib function.
    {
        int attribs[100], j = 0;
        const trace::Array *attribs_ = attribList ? attribList->toArray() : NULL;

        for (size_t i = 0; i + 1 < attribs_->values.size(); i += 2) {
            int param_i = attribs_->values[i]->toSInt();
            if (param_i == 0) {
                attribs[j] = 0;
            }

            attribs[j] = param_i;
            attribs[j+1] = attribs_->values[i+1]->toSInt();
        }

        glretrace::setPbufferAttrib(pbuffer, attribs);
    }

    if (!pbuffer || !attribList)
        return;

    // Update the glws::Drawable's fields
    const int undefined = -99999;
    int val;

    val = parseAttrib(attribList, WGL_MIPMAP_LEVEL_ARB, undefined);
    if (val != undefined) {
        pbuffer->mipmapLevel = val;
    }

    val = parseAttrib(attribList, WGL_CUBE_MAP_FACE_ARB, undefined);
    if (val != undefined) {
        // Drawable::cubeFace is integer in [0..5]
        val -= WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB;
        if (val < 0 || val > 5) {
            fprintf(stderr, "Invalid WGL_CUBE_MAP_FACE_ARB value!\n");
        }
        else {
            pbuffer->cubeFace = val;
        }
    }
}

static void retrace_wglMakeContextCurrentARB(trace::Call &call) {
    bool ret = call.ret->toBool();

    glws::Drawable *new_drawable = NULL;
    glws::Drawable *new_readable = NULL;
    Context *new_context = NULL;
    if (ret) {
        unsigned long long hglrc = call.arg(2).toUIntPtr();
        if (hglrc) {
            new_drawable = getDrawable(call.arg(0).toUIntPtr());
            new_readable = getDrawable(call.arg(1).toUIntPtr());
            new_context = getContext(hglrc);
        }
    }

    glretrace::makeCurrent(call, new_drawable, new_readable, new_context);
}

static void retrace_CGLSetSurface(trace::Call &call) {
    if (call.ret->toUInt() != kCGLNoError) {
        return;
    }

    unsigned long long ctx = call.arg(0).toUIntPtr();
    unsigned long long cid = call.arg(1).toUInt();
    int wid = call.arg(2).toUInt();
    int sid = call.arg(3).toUInt();

    (void)cid;
    (void)wid;

    glws::Drawable *drawable = getDrawable(sid);

    context_drawable_map[ctx] = drawable;
}

static void retrace_CGLClearDrawable(trace::Call &call) {
    if (call.ret->toUInt() != kCGLNoError) {
        return;
    }

    unsigned long long ctx = call.arg(0).toUIntPtr();

    context_drawable_map[ctx] = NULL;
}

static void retrace_wglUseFontOutlinesAW(trace::Call &call)
{
    bool ret = call.ret->toBool();
    if (!ret) {
        return;
    }

    uint32_t first = call.arg(1).toUInt();
    uint32_t count = call.arg(2).toUInt();
    uint32_t listBase = call.arg(3).toUInt();
    float extrusion = call.arg(5).toFloat();

    for (uint32_t i = 0; i < count; ++i) {
        glNewList(listBase + i, GL_COMPILE);
        wglSystemFontOutlines(first + i, extrusion);
        glEndList();
    }
}

static void retrace_glXDestroyPbuffer(trace::Call &call) {
    glws::Drawable *drawable = getDrawable(call.arg(1).toUInt());

    if (!drawable) {
        return;
    }

    delete drawable;
}

static void retrace_CGLSetVirtualScreen(trace::Call &call) {
    if (call.ret->toUInt() != kCGLNoError) {
        return;
    }

    GLint screen = call.arg(1).toSInt();
    if (screen != 0) {
        retrace::warning(call) << "multiple virtual screens unsupported\n";
    }
}

static void retrace_CGLSetSurface(trace::Call &call) {
    if (call.ret->toUInt() != kCGLNoError) {
        return;
    }

    unsigned long long ctx = call.arg(0).toUIntPtr();
    unsigned long long cid = call.arg(1).toUInt();
    int wid = call.arg(2).toUInt();
    int sid = call.arg(3).toUInt();

    (void)cid;
    (void)wid;

    Context *context = getContext(ctx);
    if (context) {
        glws::Drawable *drawable = getDrawable(sid, context->profile());
        context->drawable = drawable;
    }
}

static void retrace_CGLCreateContext(trace::Call &call) {
    if (call.ret->toUInt() != kCGLNoError) {
        return;
    }

    trace::Value & pix = call.argByName("pix");
    const PixelFormat *pixelFormat = retrace::asObjPointer<PixelFormat>(call, pix);
    glprofile::Profile profile = pixelFormat ? pixelFormat->profile : glretrace::defaultProfile;

    unsigned long long share = call.arg(1).toUIntPtr();
    Context *sharedContext = getContext(share);

    const trace::Array *ctx_ptr = call.arg(2).toArray();
    assert(ctx_ptr);
    unsigned long long ctx = ctx_ptr->values[0]->toUIntPtr();

    Context *context = glretrace::createContext(sharedContext, profile);
    context_map[ctx] = context;
}

static void retrace_wglGetPbufferDCARB(trace::Call &call) {
    unsigned long long orig_hdc = call.ret->toUIntPtr();
    if (!orig_hdc) {
        return;
    }

    glws::Drawable *pbuffer = pbuffer_map[call.arg(0).toUIntPtr()];

    drawable_map[orig_hdc] = pbuffer;
}

static void retrace_eglMakeCurrent(trace::Call &call) {
    if (!call.ret->toSInt()) {
        // Previously current rendering context and surfaces (if any) remain
        // unchanged.
        return;
    }

    glws::Drawable *new_drawable = getDrawable(call.arg(1).toUIntPtr());
    Context *new_context = getContext(call.arg(3).toUIntPtr());

    // Try to support GL_OES_surfaceless_context by creating a dummy drawable.
    if (new_context && !new_drawable) {
        if (!null_drawable) {
            null_drawable = glretrace::createDrawable(last_profile);
        }
        new_drawable = null_drawable;
    }

    glretrace::makeCurrent(call, new_drawable, new_context);
}