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/* Copyright (c) 2010 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef PPAPI_C_DEV_PPB_SURFACE_3D_DEV_H_
#define PPAPI_C_DEV_PPB_SURFACE_3D_DEV_H_
#include "ppapi/c/dev/pp_graphics_3d_dev.h"
#include "ppapi/c/pp_bool.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_resource.h"
#define PPB_SURFACE_3D_DEV_INTERFACE "PPB_Surface3D(Dev);0.1"
struct PPB_Surface3D_Dev {
// Creates a render surface and returns a handle to it.
// Any PPB_Context3D_Dev created with a compatible PP_Config3D_Dev
// can be used to render into this surface. The returned surface is
// off-screen to start with. It must be attached to a plugin instance
// using PPB_Instance::BindGraphics to draw on the web page.
//
// attrib_list specifies a list of attributes for the surface. The list has
// the same structure as described for PPB_Graphics3D_Dev::GetConfigAttribs.
// Attributes that can be specified in attrib_list include:
// - PP_GRAPHICS3DATTRIB_WIDTH
// - PP_GRAPHICS3DATTRIB_HEIGHT
// - PP_GRAPHICS3DATTRIB_LARGEST_SURFACE: If true, creates the largest
// possible surface when the allocation of the surface would otherwise fail.
// The width and height of the allocated surface will never exceed the
// values of PP_GRAPHICS3DATTRIB_WIDTH and PP_GRAPHICS3DATTRIB_HEIGHT,
// respectively. If this option is used, PPB_Surface3D_Dev::GetAttrib
// can be used to retrieve surface dimensions.
// - PP_GRAPHICS3DATTRIB_RENDER_BUFFER
PP_Resource (*Create)(PP_Instance instance,
PP_Config3D_Dev config,
const int32_t* attrib_list);
// Returns PP_TRUE if the given resource is a valid Surface3D, PP_FALSE if it
// is an invalid resource or is a resource of another type.
PP_Bool (*IsSurface3D)(PP_Resource resource);
// Sets an attribute for PPB_Surface3D_Dev. The specified attribute of
// surface is set to value. Attributes that can be specified are:
// - PP_GRAPHICS3DATTRIB_MULTISAMPLE_RESOLVE: If value
// is PP_GRAPHICS3DATTRIBVALUE_MULTISAMPLE_RESOLVE_BOX, and the
// PP_GRAPHICS3DATTRIB_SURFACE_TYPE attribute used to create surface does
// not contain PP_GRAPHICS3DATTRIBVALUE_MULTISAMPLE_RESOLVE_BOX_BIT, a
// PP_GRAPHICS3DERROR_BAD_MATCH error is returned.
// - PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR: If value is
// PP_GRAPHICS3DATTRIBVALUE_BUFFER_PRESERVED, and the
// PP_GRAPHICS3DATTRIB_SURFACE_TYPE attribute used to create surface
// does not contain PP_GRAPHICS3DATTRIBVALUE_SWAP_BEHAVIOR_PRESERVED_BIT,
// a PP_GRAPHICS3DERROR_BAD_MATCH error is returned.
int32_t (*SetAttrib)(PP_Resource surface,
int32_t attribute,
int32_t value);
// Retrieves the value of attribute for surface. Attributes that can be
// queried for are:
// - PP_GRAPHICS3DATTRIB_CONFIG_ID: returns the ID of the
// PP_Config3D_Dev with respect to which the surface was created.
// - PP_GRAPHICS3DATTRIB_LARGEST_SURFACE: returns the same attribute value
// specified when the surface was created with PPB_Surface3D_Dev::Create.
// - PP_GRAPHICS3DATTRIB_WIDTH and PP_GRAPHICS3DATTRIB_HEIGHT: The returned
// size may be less than the requested size if
// PP_GRAPHICS3DATTRIB_LARGEST_SURFACE is true.
// - PP_GRAPHICS3DATTRIB_RENDER_BUFFER
// - PP_GRAPHICS3DATTRIB_MULTISAMPLE_RESOLVE
// - PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR
//
// If attribute is not a valid PPB_Surface3D_Dev surface attribute,
// then an PP_GRAPHICS3DERROR_BAD_ATTRIBUTE error is returned. If surface
// is not a valid PPB_Surface3D_Dev then an PP_GRAPHICS3DERROR_BAD_SURFACE
// error is returned.
int32_t (*GetAttrib)(PP_Resource surface,
int32_t attribute,
int32_t* value);
// Makes the contents of the color buffer available for compositing.
// This function has no effect on off-screen surfaces - ones not bound
// to any plugin instance. The contents of ancillary buffers are always
// undefined after calling SwapBuffers. The contents of the color buffer are
// undefined if the value of the PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR attribute
// of surface is not PP_GRAPHICS3DATTRIBVALUE_BUFFER_PRESERVED.
//
// If surface is bound as the draw surface of a context then SwapBuffers
// performs an implicit flush operation on the context.
//
// This functions can run in two modes:
// - In synchronous mode, you specify NULL for the callback and the callback
// data. This function will block the calling thread until the image has
// been painted to the screen. It is not legal to block the main thread of
// the plugin, you can use synchronous mode only from background threads.
// - In asynchronous mode, you specify a callback function and the argument
// for that callback function. The callback function will be executed on
// the calling thread when the image has been painted to the screen. While
// you are waiting for a Flush callback, additional calls to Flush will
// fail.
//
// Because the callback is executed (or thread unblocked) only when the
// plugin's current state is actually on the screen, this function provides a
// way to rate limit animations. By waiting until the image is on the screen
// before painting the next frame, you can ensure you're not generating
// updates faster than the screen can be updated.
//
int32_t (*SwapBuffers)(PP_Resource surface,
struct PP_CompletionCallback callback);
};
#endif // PPAPI_C_DEV_PPB_SURFACE_3D_DEV_H_
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