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58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef WEBGL_CONTEXT_UTILS_H_
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#define WEBGL_CONTEXT_UTILS_H_
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#include "WebGLStrongTypes.h"
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#include "WebGLTypes.h"
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namespace mozilla {
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// For use with the different texture calls, i.e.
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// TexImage2D, CopyTex[Sub]Image2D, ...
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// that take a "target" parameter. This parameter is not always the same as
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// the texture binding location, like GL_TEXTURE_2D or GL_TEXTURE_CUBE_MAP.
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// For example, cube maps would pass GL_TEXTURE_CUBE_MAP_[POS|NEG]_[X|Y|Z]
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// instead of just GL_TEXTURE_CUBE_MAP.
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//
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// This function converts the texture image target to the texture target a.k.a.
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// binding location. The returned binding location can be used to check that
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// the currently bound texture is appropriate for this texImageTarget.
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//
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// Returns GL_NONE if passed an invalid texture image target
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TexTarget TexImageTargetToTexTarget(TexImageTarget texImageTarget);
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struct GLComponents {
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unsigned char mComponents;
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enum Components {
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Red = (1 << 0),
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Green = (1 << 1),
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Blue = (1 << 2),
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Alpha = (1 << 3),
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Stencil = (1 << 4),
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Depth = (1 << 5),
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};
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GLComponents() : mComponents(0) {}
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explicit GLComponents(TexInternalFormat format);
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// Returns true iff other has all (or more) of
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// the components present in this GLComponents
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bool IsSubsetOf(const GLComponents& other) const;
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};
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/**
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* Return the displayable name for the texture function that is the
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* source for validation.
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*/
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const char* InfoFrom(WebGLTexImageFunc func, WebGLTexDimensions dims);
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} // namespace mozilla
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#endif // WEBGL_CONTEXT_UTILS_H_
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