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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 declares the TextureGL, Texture2DGL, Texture3DGL and TextureCubeGL
+// classes.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_CROSS_GL_TEXTURE_GL_H_
+#define GPU_COMMAND_BUFFER_SERVICE_CROSS_GL_TEXTURE_GL_H_
+
+#include "command_buffer/common/gapi_interface.h"
+#include "command_buffer/service/gl_utils.h"
+#include "command_buffer/service/resource.h"
+#include "command_buffer/service/texture_utils.h"
+
+namespace command_buffer {
+namespace o3d {
+
+class RenderDepthStencilSurfaceGL;
+class RenderSurfaceGL;
+
+// The base class for a GL texture resource, providing access to the base GL
+// texture that can be assigned to an effect parameter or a sampler unit.
+class TextureGL : public Texture {
+ public:
+ TextureGL(texture::Type type,
+ unsigned int levels,
+ texture::Format format,
+ bool enable_render_surfaces,
+ unsigned int flags,
+ GLuint gl_texture)
+ : Texture(type, levels, format, enable_render_surfaces, flags),
+ gl_texture_(gl_texture) {}
+ virtual ~TextureGL();
+
+ // Gets the GL texture object.
+ GLuint gl_texture() const { return gl_texture_; }
+
+ // Sets data into a texture resource.
+ virtual bool SetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ const void *data) = 0;
+
+ // Gets data from a texture resource.
+ virtual bool GetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ void *data) = 0;
+
+ // Creates the render surface, returning false if unable to.
+ virtual bool CreateRenderSurface(int width,
+ int height,
+ int mip_level,
+ int side) = 0;
+
+ virtual bool InstallFrameBufferObjects(
+ RenderSurfaceGL *gl_surface) = 0;
+
+ protected:
+ const GLuint gl_texture_;
+
+ private:
+ DISALLOW_COPY_AND_ASSIGN(TextureGL);
+};
+
+// A 2D texture resource for GL.
+class Texture2DGL : public TextureGL {
+ public:
+ Texture2DGL(unsigned int levels,
+ texture::Format format,
+ bool enable_render_surfaces,
+ unsigned int flags,
+ unsigned int width,
+ unsigned int height,
+ GLuint gl_texture)
+ : TextureGL(texture::kTexture2d,
+ levels,
+ format,
+ enable_render_surfaces,
+ flags,
+ gl_texture),
+ width_(width),
+ height_(height) {}
+
+ // Creates a 2D texture resource.
+ static Texture2DGL *Create(unsigned int width,
+ unsigned int height,
+ unsigned int levels,
+ texture::Format format,
+ unsigned int flags,
+ bool enable_render_surfaces);
+
+ // Sets data into a 2D texture resource.
+ virtual bool SetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ const void *data);
+
+ // Gets data from a 2D texture resource.
+ virtual bool GetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ void *data);
+
+ // Create a render surface which matches this texture type.
+ virtual bool CreateRenderSurface(int width,
+ int height,
+ int mip_level,
+ int side);
+
+ virtual bool InstallFrameBufferObjects(
+ RenderSurfaceGL *gl_surface);
+
+ private:
+ unsigned int width_;
+ unsigned int height_;
+ DISALLOW_COPY_AND_ASSIGN(Texture2DGL);
+};
+
+// A 3D texture resource for GL.
+class Texture3DGL : public TextureGL {
+ public:
+ Texture3DGL(unsigned int levels,
+ texture::Format format,
+ bool enable_render_surfaces,
+ unsigned int flags,
+ unsigned int width,
+ unsigned int height,
+ unsigned int depth,
+ GLuint gl_texture)
+ : TextureGL(texture::kTexture3d,
+ levels,
+ format,
+ enable_render_surfaces,
+ flags,
+ gl_texture),
+ width_(width),
+ height_(height),
+ depth_(depth) {}
+
+ // Creates a 3D texture resource.
+ static Texture3DGL *Create(unsigned int width,
+ unsigned int height,
+ unsigned int depth,
+ unsigned int levels,
+ texture::Format format,
+ unsigned int flags,
+ bool enable_render_surfaces);
+
+ // Sets data into a 3D texture resource.
+ virtual bool SetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ const void *data);
+
+ // Gets data from a 3D texture resource.
+ virtual bool GetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ void *data);
+
+ // Create a render surface which matches this texture type.
+ virtual bool CreateRenderSurface(int width,
+ int height,
+ int mip_level,
+ int side);
+
+ virtual bool InstallFrameBufferObjects(
+ RenderSurfaceGL *gl_surface);
+
+ private:
+ unsigned int width_;
+ unsigned int height_;
+ unsigned int depth_;
+ DISALLOW_COPY_AND_ASSIGN(Texture3DGL);
+};
+
+// A cube map texture resource for GL.
+class TextureCubeGL : public TextureGL {
+ public:
+ TextureCubeGL(unsigned int levels,
+ texture::Format format,
+ bool render_surface_enabled,
+ unsigned int flags,
+ unsigned int side,
+ GLuint gl_texture)
+ : TextureGL(texture::kTextureCube,
+ levels,
+ format,
+ render_surface_enabled,
+ flags,
+ gl_texture),
+ side_(side) {}
+
+ // Creates a cube map texture resource.
+ static TextureCubeGL *Create(unsigned int side,
+ unsigned int levels,
+ texture::Format format,
+ unsigned int flags,
+ bool enable_render_surfaces);
+
+ // Sets data into a cube map texture resource.
+ virtual bool SetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ const void *data);
+
+ // Gets data from a cube map texture resource.
+ virtual bool GetData(const Volume& volume,
+ unsigned int level,
+ texture::Face face,
+ unsigned int row_pitch,
+ unsigned int slice_pitch,
+ unsigned int size,
+ void *data);
+
+ // Create a render surface which matches this texture type.
+ virtual bool CreateRenderSurface(int width,
+ int height,
+ int mip_level,
+ int side);
+
+ virtual bool InstallFrameBufferObjects(
+ RenderSurfaceGL *gl_surface);
+
+ private:
+ unsigned int side_;
+ DISALLOW_COPY_AND_ASSIGN(TextureCubeGL);
+};
+
+} // namespace o3d
+} // namespace command_buffer
+
+#endif // GPU_COMMAND_BUFFER_SERVICE_CROSS_GL_TEXTURE_GL_H_
generated by cgit v1.1 at 2025-02-08 22:51:46 +0000