Add m-esr52 at 52.6.0

1 files changed, 84 insertions, 0 deletions

diff --git a/gfx/gl/GLUploadHelpers.h b/gfx/gl/GLUploadHelpers.h
new file mode 100644
index 000000000..866d44adb
--- /dev/null
+++ b/gfx/gl/GLUploadHelpers.h
@@ -0,0 +1,84 @@
+/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GLUploadHelpers_h_
+#define GLUploadHelpers_h_
+
+#include "GLDefs.h"
+#include "mozilla/gfx/Types.h"
+#include "nsPoint.h"
+#include "nsRegionFwd.h"
+
+namespace mozilla {
+
+namespace gfx {
+class DataSourceSurface;
+} // namespace gfx
+
+namespace gl {
+
+class GLContext;
+
+/**
+ * Uploads image data to an OpenGL texture, initializing the texture
+ * first if necessary.
+ *
+ * \param gl The GL Context to use.
+ * \param aData Start of image data of surface to upload.
+ *              Corresponds to the first pixel of the texture.
+ * \param aStride The image data's stride.
+ * \param aFormat The image data's format.
+ * \param aDstRegion Region of the texture to upload.
+ * \param aTexture The OpenGL texture to use. Must refer to a valid texture.
+ * \param aSize The full size of the texture.
+ * \param aOutUploadSize If set, the number of bytes the texture requires will
+ *                       be returned here.
+ * \param aNeedInit Indicates whether a new texture must be allocated.
+ * \param aTextureUnit The texture unit used temporarily to upload the surface.
+ *                     This may be overridden, so clients should not rely on
+ *                     the aTexture being bound to aTextureUnit after this call,
+ *                     or even on aTextureUnit being active.
+ * \param aTextureTarget The texture target to use.
+ * \return Surface format of this texture.
+ */
+gfx::SurfaceFormat
+UploadImageDataToTexture(GLContext* gl,
+                         unsigned char* aData,
+                         int32_t aStride,
+                         gfx::SurfaceFormat aFormat,
+                         const nsIntRegion& aDstRegion,
+                         GLuint aTexture,
+                         const gfx::IntSize& aSize,
+                         size_t* aOutUploadSize = nullptr,
+                         bool aNeedInit = false,
+                         GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
+                         GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
+
+/**
+ * Convenience wrapper around UploadImageDataToTexture for
+ * gfx::DataSourceSurface's.
+ *
+ * \param aSurface The surface from which to upload image data.
+ * \param aSrcPoint Offset into aSurface where this texture's data begins.
+ */
+gfx::SurfaceFormat
+UploadSurfaceToTexture(GLContext* gl,
+                       gfx::DataSourceSurface* aSurface,
+                       const nsIntRegion& aDstRegion,
+                       GLuint aTexture,
+                       const gfx::IntSize& aSize,
+                       size_t* aOutUploadSize = nullptr,
+                       bool aNeedInit = false,
+                       const gfx::IntPoint& aSrcPoint = gfx::IntPoint(0, 0),
+                       GLenum aTextureUnit = LOCAL_GL_TEXTURE0,
+                       GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D);
+
+bool CanUploadSubTextures(GLContext* gl);
+bool CanUploadNonPowerOfTwo(GLContext* gl);
+
+} // namespace gl
+} // namespace mozilla
+
+#endif