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author | Marisa-Chan | 2014-06-13 21:43:04 +0700 |
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committer | Marisa-Chan | 2014-06-13 21:43:04 +0700 |
commit | 45589950c0fb1a449351e6a00ef10d42290d8bae (patch) | |
tree | 44e4eedcb7e69d5fc386155b000ed038af07251d /backends/graphics/opengl/texture.h | |
parent | 48360645dcd5f8fddb135b6e31ae5cae4be8d77f (diff) | |
parent | 5c005ad3a3f1df0bc968c85c1cf0fc48e36ab0b2 (diff) | |
download | scummvm-rg350-45589950c0fb1a449351e6a00ef10d42290d8bae.tar.gz scummvm-rg350-45589950c0fb1a449351e6a00ef10d42290d8bae.tar.bz2 scummvm-rg350-45589950c0fb1a449351e6a00ef10d42290d8bae.zip |
Merge remote-tracking branch 'upstream/master' into zvision
Conflicts:
engines/zvision/animation/rlf_animation.cpp
engines/zvision/animation_control.h
engines/zvision/core/console.cpp
engines/zvision/core/events.cpp
engines/zvision/cursors/cursor.cpp
engines/zvision/cursors/cursor_manager.cpp
engines/zvision/cursors/cursor_manager.h
engines/zvision/fonts/truetype_font.cpp
engines/zvision/graphics/render_manager.cpp
engines/zvision/graphics/render_manager.h
engines/zvision/inventory/inventory_manager.h
engines/zvision/inventory_manager.h
engines/zvision/meta_animation.h
engines/zvision/module.mk
engines/zvision/scripting/actions.cpp
engines/zvision/scripting/control.h
engines/zvision/scripting/controls/animation_control.cpp
engines/zvision/scripting/controls/animation_control.h
engines/zvision/scripting/controls/input_control.cpp
engines/zvision/scripting/controls/lever_control.cpp
engines/zvision/scripting/controls/timer_node.cpp
engines/zvision/scripting/controls/timer_node.h
engines/zvision/scripting/puzzle.h
engines/zvision/scripting/scr_file_handling.cpp
engines/zvision/scripting/script_manager.cpp
engines/zvision/scripting/script_manager.h
engines/zvision/sidefx.cpp
engines/zvision/sound/zork_raw.cpp
engines/zvision/sound/zork_raw.h
engines/zvision/video/video.cpp
engines/zvision/video/zork_avi_decoder.h
engines/zvision/zvision.cpp
engines/zvision/zvision.h
Diffstat (limited to 'backends/graphics/opengl/texture.h')
-rw-r--r-- | backends/graphics/opengl/texture.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/backends/graphics/opengl/texture.h b/backends/graphics/opengl/texture.h new file mode 100644 index 0000000000..ad70833544 --- /dev/null +++ b/backends/graphics/opengl/texture.h @@ -0,0 +1,175 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BACKENDS_GRAPHICS_OPENGL_TEXTURE_H +#define BACKENDS_GRAPHICS_OPENGL_TEXTURE_H + +#include "backends/graphics/opengl/opengl-sys.h" + +#include "graphics/pixelformat.h" +#include "graphics/surface.h" + +#include "common/rect.h" + +namespace OpenGL { + +/** + * An OpenGL texture wrapper. It automatically takes care of all OpenGL + * texture handling issues and also provides access to the texture data. + */ +class Texture { +public: + /** + * Create a new texture with the specific internal format. + * + * @param glIntFormat The internal format to use. + * @param glFormat The input format. + * @param glType The input type. + * @param format The format used for the texture input. + */ + Texture(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format); + virtual ~Texture(); + + /** + * Destroy the OpenGL texture name. + */ + void releaseInternalTexture(); + + /** + * Create the OpenGL texture name and flag the whole texture as dirty. + */ + void recreateInternalTexture(); + + /** + * Enable or disable linear texture filtering. + * + * @param enable true to enable and false to disable. + */ + void enableLinearFiltering(bool enable); + + /** + * Allocate texture space for the desired dimensions. This wraps any + * handling of requirements for POT textures. + * + * @param width The desired logical width. + * @param height The desired logical height. + */ + virtual void allocate(uint width, uint height); + + void copyRectToTexture(uint x, uint y, uint w, uint h, const void *src, uint srcPitch); + + void fill(uint32 color); + + void draw(GLfloat x, GLfloat y, GLfloat w, GLfloat h); + + void flagDirty() { _allDirty = true; } + bool isDirty() const { return _allDirty || !_dirtyArea.isEmpty(); } + + uint getWidth() const { return _userPixelData.w; } + uint getHeight() const { return _userPixelData.h; } + + /** + * @return The hardware format of the texture data. + */ + const Graphics::PixelFormat &getHardwareFormat() const { return _format; } + + /** + * @return The logical format of the texture data. + */ + virtual Graphics::PixelFormat getFormat() const { return _format; } + + virtual Graphics::Surface *getSurface() { return &_userPixelData; } + virtual const Graphics::Surface *getSurface() const { return &_userPixelData; } + + /** + * @return Whether the texture data is using a palette. + */ + virtual bool hasPalette() const { return false; } + + virtual void setPalette(uint start, uint colors, const byte *palData) {} + + virtual void *getPalette() { return 0; } + virtual const void *getPalette() const { return 0; } + + /** + * Query texture related OpenGL information from the context. This only + * queries the maximum texture size for now. + */ + static void queryTextureInformation(); + + /** + * @return Return the maximum texture dimensions supported. + */ + static GLint getMaximumTextureSize() { return _maxTextureSize; } +protected: + virtual void updateTexture(); + + Common::Rect getDirtyArea() const; +private: + const GLenum _glIntFormat; + const GLenum _glFormat; + const GLenum _glType; + const Graphics::PixelFormat _format; + + GLint _glFilter; + GLuint _glTexture; + + Graphics::Surface _textureData; + Graphics::Surface _userPixelData; + + bool _allDirty; + Common::Rect _dirtyArea; + void clearDirty() { _allDirty = false; _dirtyArea = Common::Rect(); } + + static GLint _maxTextureSize; +}; + +class TextureCLUT8 : public Texture { +public: + TextureCLUT8(GLenum glIntFormat, GLenum glFormat, GLenum glType, const Graphics::PixelFormat &format); + virtual ~TextureCLUT8(); + + virtual void allocate(uint width, uint height); + + virtual Graphics::PixelFormat getFormat() const; + + virtual bool hasPalette() const { return true; } + + virtual void setPalette(uint start, uint colors, const byte *palData); + + virtual void *getPalette() { return _palette; } + virtual const void *getPalette() const { return _palette; } + + virtual Graphics::Surface *getSurface() { return &_clut8Data; } + virtual const Graphics::Surface *getSurface() const { return &_clut8Data; } + +protected: + virtual void updateTexture(); + +private: + Graphics::Surface _clut8Data; + byte *_palette; +}; + +} // End of namespace OpenGL + +#endif |