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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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 contains the declarations for Texture2DCB and TextureCUBECB.
#ifndef O3D_CORE_CROSS_COMMAND_BUFFER_TEXTURE_CB_H_
#define O3D_CORE_CROSS_COMMAND_BUFFER_TEXTURE_CB_H_
#include <vector>
#include "core/cross/bitmap.h"
#include "core/cross/texture.h"
#include "core/cross/types.h"
#include "command_buffer/common/cross/resource.h"
#include "core/cross/command_buffer/render_surface_cb.h"
namespace o3d {
class RendererCB;
// Texture2DCB -----------------------------------------------------------------
// Texture2DCB implements the Texture2D interface for command buffers.
class Texture2DCB : public Texture2D {
public:
typedef SmartPointer<Texture2DCB> Ref;
virtual ~Texture2DCB();
// Creates a new Texture2DCB with the given specs. If the texture creation
// fails then it returns NULL otherwise it returns a pointer to the newly
// created Texture object.
// The created texture takes ownership of the bitmap data.
static Texture2DCB* Create(ServiceLocator* service_locator,
Texture::Format format,
int levels,
int width,
int height,
bool enable_render_surfaces);
// Overridden from Texture2D
virtual void SetRect(int level,
unsigned left,
unsigned top,
unsigned width,
unsigned height,
const void* src_data,
int src_pitch);
// Returns the implementation-specific texture handle for this texture.
virtual void* GetTextureHandle() const {
return reinterpret_cast<void*>(resource_id_);
}
// Gets the texture resource ID.
command_buffer::ResourceID resource_id() const { return resource_id_; }
// Gets a RGBASwizzleIndices that contains a mapping from
// RGBA to the internal format used by the rendering API.
virtual const RGBASwizzleIndices& GetABGR32FSwizzleIndices();
protected:
// Overridden from Texture2D
virtual bool PlatformSpecificLock(
int level, void** texture_data, int* pitch, AccessMode mode);
// Overridden from Texture2D
virtual bool PlatformSpecificUnlock(int level);
// Overridden from Texture2D
virtual RenderSurface::Ref PlatformSpecificGetRenderSurface(int mip_level);
private:
// Initializes the Texture2DCB from a preexisting OpenCB texture handle
// and raw Bitmap data.
// The texture takes ownership of the bitmap data.
Texture2DCB(ServiceLocator* service_locator,
command_buffer::ResourceID resource_id,
Texture::Format format,
int levels,
int width,
int height,
bool enable_render_surfaces);
// Returns true if the backing bitmap has the data for the level.
bool HasLevel(unsigned int level) {
DCHECK_LT(level, static_cast<unsigned int>(levels()));
return (has_levels_ & (1 << level)) != 0;
}
RendererCB* renderer_;
command_buffer::ResourceID resource_id_;
// A bitmap used to back the NPOT textures on POT-only hardware, and to back
// the pixel buffer for Lock().
Bitmap::Ref backing_bitmap_;
// Bitfield that indicates mip levels that are currently stored in the
// backing bitmap.
unsigned int has_levels_;
// Bitfield that indicates which mip levels are currently locked.
unsigned int locked_levels_;
};
// TextureCUBECB ---------------------------------------------------------------
// TextureCUBECB implements the TextureCUBE interface with OpenCB.
class TextureCUBECB : public TextureCUBE {
public:
typedef SmartPointer<TextureCUBECB> Ref;
virtual ~TextureCUBECB();
// Create a new Cube texture from scratch.
static TextureCUBECB* TextureCUBECB::Create(ServiceLocator* service_locator,
Texture::Format format,
int levels,
int edge_length,
bool enable_render_surfaces);
// Overridden from TextureCUBE
virtual void SetRect(CubeFace face,
int level,
unsigned dst_left,
unsigned dst_top,
unsigned width,
unsigned height,
const void* src_data,
int src_pitch);
// Returns the implementation-specific texture handle for this texture.
virtual void* GetTextureHandle() const {
return reinterpret_cast<void*>(resource_id_);
}
// Gets the texture resource ID.
command_buffer::ResourceID resource_id() const { return resource_id_; }
// Gets a RGBASwizzleIndices that contains a mapping from
// RGBA to the internal format used by the rendering API.
virtual const RGBASwizzleIndices& GetABGR32FSwizzleIndices();
protected:
// Overridden from TextureCUBE
virtual bool PlatformSpecificLock(
CubeFace face, int level, void** texture_data, int* pitch,
AccessMode mode);
// Overridden from TextureCUBE
virtual bool PlatformSpecificUnlock(CubeFace face, int level);
// Overridden from TextureCUBE.
virtual RenderSurface::Ref PlatformSpecificGetRenderSurface(CubeFace face,
int level);
private:
// Creates a texture from a pre-existing texture resource.
TextureCUBECB(ServiceLocator* service_locator,
command_buffer::ResourceID texture,
Texture::Format format,
int levels,
int edge_length,
bool enable_render_surfaces);
// Returns true if the backing bitmap has the data for the level.
bool HasLevel(CubeFace face, unsigned int level) {
DCHECK_LT(level, static_cast<unsigned int>(levels()));
return (has_levels_[face] & (1 << level)) != 0;
}
RendererCB* renderer_;
command_buffer::ResourceID resource_id_;
// Bitmaps used to back the NPOT textures on POT-only hardware.
Bitmap::Ref backing_bitmaps_[NUMBER_OF_FACES];
// Bitfields that indicates mip levels that are currently stored in the
// backing bitmap, one per face.
unsigned int has_levels_[NUMBER_OF_FACES];
// Bitfields that indicates which levels are currently locked, one per face.
unsigned int locked_levels_[NUMBER_OF_FACES];
};
} // namespace o3d
#endif // O3D_CORE_CROSS_COMMAND_BUFFER_TEXTURE_CB_H_
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