зеркало из https://github.com/mozilla/gecko-dev.git
519 строки
20 KiB
C++
519 строки
20 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
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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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#include "GLUploadHelpers.h"
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#include "GLContext.h"
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#include "mozilla/gfx/2D.h"
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#include "gfxUtils.h"
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#include "mozilla/gfx/Tools.h" // For BytesPerPixel
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#include "nsRegion.h"
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#include "GfxTexturesReporter.h"
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#include "mozilla/gfx/Logging.h"
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namespace mozilla {
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using namespace gfx;
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namespace gl {
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static unsigned int DataOffset(const IntPoint& aPoint, int32_t aStride,
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SurfaceFormat aFormat) {
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unsigned int data = aPoint.y * aStride;
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data += aPoint.x * BytesPerPixel(aFormat);
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return data;
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}
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static bool CheckUploadBounds(const IntSize& aDst, const IntSize& aSrc,
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const IntPoint& aOffset) {
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if (aOffset.x < 0 || aOffset.y < 0 || aOffset.x >= aSrc.width ||
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aOffset.y >= aSrc.height) {
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MOZ_ASSERT_UNREACHABLE("Offset outside source bounds");
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return false;
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}
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if (aDst.width > (aSrc.width - aOffset.x) ||
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aDst.height > (aSrc.height - aOffset.y)) {
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MOZ_ASSERT_UNREACHABLE("Source has insufficient data");
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return false;
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}
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return true;
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}
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static GLint GetAddressAlignment(ptrdiff_t aAddress) {
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if (!(aAddress & 0x7)) {
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return 8;
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} else if (!(aAddress & 0x3)) {
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return 4;
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} else if (!(aAddress & 0x1)) {
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return 2;
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} else {
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return 1;
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}
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}
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// Take texture data in a given buffer and copy it into a larger buffer,
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// padding out the edge pixels for filtering if necessary
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static void CopyAndPadTextureData(const GLvoid* srcBuffer, GLvoid* dstBuffer,
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GLsizei srcWidth, GLsizei srcHeight,
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GLsizei dstWidth, GLsizei dstHeight,
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GLsizei stride, GLint pixelsize) {
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unsigned char* rowDest = static_cast<unsigned char*>(dstBuffer);
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const unsigned char* source = static_cast<const unsigned char*>(srcBuffer);
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for (GLsizei h = 0; h < srcHeight; ++h) {
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memcpy(rowDest, source, srcWidth * pixelsize);
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rowDest += dstWidth * pixelsize;
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source += stride;
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}
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GLsizei padHeight = srcHeight;
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// Pad out an extra row of pixels so that edge filtering doesn't use garbage
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// data
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if (dstHeight > srcHeight) {
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memcpy(rowDest, source - stride, srcWidth * pixelsize);
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padHeight++;
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}
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// Pad out an extra column of pixels
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if (dstWidth > srcWidth) {
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rowDest = static_cast<unsigned char*>(dstBuffer) + srcWidth * pixelsize;
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for (GLsizei h = 0; h < padHeight; ++h) {
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memcpy(rowDest, rowDest - pixelsize, pixelsize);
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rowDest += dstWidth * pixelsize;
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}
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}
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}
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// In both of these cases (for the Adreno at least) it is impossible
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// to determine good or bad driver versions for POT texture uploads,
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// so blacklist them all. Newer drivers use a different rendering
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// string in the form "Adreno (TM) 200" and the drivers we've seen so
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// far work fine with NPOT textures, so don't blacklist those until we
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// have evidence of any problems with them.
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bool ShouldUploadSubTextures(GLContext* gl) {
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if (!gl->WorkAroundDriverBugs()) return true;
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// There are certain GPUs that we don't want to use glTexSubImage2D on
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// because that function can be very slow and/or buggy
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if (gl->Renderer() == GLRenderer::Adreno200 ||
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gl->Renderer() == GLRenderer::Adreno205) {
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return false;
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}
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// On PowerVR glTexSubImage does a readback, so it will be slower
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// than just doing a glTexImage2D() directly. i.e. 26ms vs 10ms
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if (gl->Renderer() == GLRenderer::SGX540 ||
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gl->Renderer() == GLRenderer::SGX530) {
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return false;
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}
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return true;
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}
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static void TexSubImage2DWithUnpackSubimageGLES(
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GLContext* gl, GLenum target, GLint level, GLint xoffset, GLint yoffset,
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GLsizei width, GLsizei height, GLsizei stride, GLint pixelsize,
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GLenum format, GLenum type, const GLvoid* pixels) {
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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// When using GL_UNPACK_ROW_LENGTH, we need to work around a Tegra
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// driver crash where the driver apparently tries to read
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// (stride - width * pixelsize) bytes past the end of the last input
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// row. We only upload the first height-1 rows using GL_UNPACK_ROW_LENGTH,
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// and then we upload the final row separately. See bug 697990.
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int rowLength = stride / pixelsize;
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if (gl->HasPBOState()) {
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
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gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
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type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
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} else {
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
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gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height - 1,
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format, type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
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gl->fTexSubImage2D(target, level, xoffset, yoffset + height - 1, width, 1,
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format, type,
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(const unsigned char*)pixels + (height - 1) * stride);
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}
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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}
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static void TexSubImage2DWithoutUnpackSubimage(
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GLContext* gl, GLenum target, GLint level, GLint xoffset, GLint yoffset,
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GLsizei width, GLsizei height, GLsizei stride, GLint pixelsize,
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GLenum format, GLenum type, const GLvoid* pixels) {
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// Not using the whole row of texture data and GL_UNPACK_ROW_LENGTH
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// isn't supported. We make a copy of the texture data we're using,
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// such that we're using the whole row of data in the copy. This turns
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// out to be more efficient than uploading row-by-row; see bug 698197.
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// Width and height are never more than 16384. At 16Ki*16Ki, 4bpp is 1GiB, but
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// if we allow 8bpp (or higher) here, that's 2GiB, which would overflow on
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// 32-bit.
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MOZ_ASSERT(width <= 16384);
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MOZ_ASSERT(height <= 16384);
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MOZ_ASSERT(pixelsize < 8);
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const auto size = CheckedInt<size_t>(width) * height * pixelsize;
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if (!size.isValid()) {
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// This should never happen, but we use a defensive check.
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MOZ_ASSERT_UNREACHABLE("Unacceptable size calculated.!");
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return;
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}
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unsigned char* newPixels = new (fallible) unsigned char[size.value()];
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if (newPixels) {
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unsigned char* rowDest = newPixels;
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const unsigned char* rowSource = (const unsigned char*)pixels;
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for (int h = 0; h < height; h++) {
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memcpy(rowDest, rowSource, width * pixelsize);
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rowDest += width * pixelsize;
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rowSource += stride;
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}
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stride = width * pixelsize;
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)newPixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
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type, newPixels);
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delete[] newPixels;
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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} else {
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// If we did not have sufficient memory for the required
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// temporary buffer, then fall back to uploading row-by-row.
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const unsigned char* rowSource = (const unsigned char*)pixels;
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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for (int i = 0; i < height; i++) {
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gl->fTexSubImage2D(target, level, xoffset, yoffset + i, width, 1, format,
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type, rowSource);
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rowSource += stride;
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}
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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}
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}
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static void TexSubImage2DHelper(GLContext* gl, GLenum target, GLint level,
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GLint xoffset, GLint yoffset, GLsizei width,
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GLsizei height, GLsizei stride, GLint pixelsize,
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GLenum format, GLenum type,
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const GLvoid* pixels) {
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if (gl->IsGLES()) {
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if (stride == width * pixelsize) {
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
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type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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} else if (gl->IsExtensionSupported(GLContext::EXT_unpack_subimage) ||
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gl->HasPBOState()) {
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TexSubImage2DWithUnpackSubimageGLES(gl, target, level, xoffset, yoffset,
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width, height, stride, pixelsize,
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format, type, pixels);
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} else {
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TexSubImage2DWithoutUnpackSubimage(gl, target, level, xoffset, yoffset,
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width, height, stride, pixelsize,
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format, type, pixels);
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}
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} else {
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// desktop GL (non-ES) path
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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int rowLength = stride / pixelsize;
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
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gl->fTexSubImage2D(target, level, xoffset, yoffset, width, height, format,
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type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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}
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}
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static void TexImage2DHelper(GLContext* gl, GLenum target, GLint level,
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GLint internalformat, GLsizei width,
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GLsizei height, GLsizei stride, GLint pixelsize,
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GLint border, GLenum format, GLenum type,
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const GLvoid* pixels) {
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if (gl->IsGLES()) {
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NS_ASSERTION(
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format == (GLenum)internalformat,
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"format and internalformat not the same for glTexImage2D on GLES2");
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MOZ_ASSERT(width >= 0 && height >= 0);
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if (!CanUploadNonPowerOfTwo(gl) &&
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(stride != width * pixelsize || !IsPowerOfTwo((uint32_t)width) ||
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!IsPowerOfTwo((uint32_t)height))) {
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// Pad out texture width and height to the next power of two
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// as we don't support/want non power of two texture uploads
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GLsizei paddedWidth = RoundUpPow2((uint32_t)width);
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GLsizei paddedHeight = RoundUpPow2((uint32_t)height);
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// Width and height are never more than 16384. At 16Ki*16Ki, 4bpp is 1GiB,
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// but if we allow 8bpp (or higher) here, that's 2GiB, which would
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// overflow on 32-bit.
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MOZ_ASSERT(width <= 16384);
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MOZ_ASSERT(height <= 16384);
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MOZ_ASSERT(pixelsize < 8);
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const auto size =
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CheckedInt<size_t>(paddedWidth) * paddedHeight * pixelsize;
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if (!size.isValid()) {
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// This should never happen, but we use a defensive check.
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MOZ_ASSERT_UNREACHABLE("Unacceptable size calculated.!");
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return;
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}
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GLvoid* paddedPixels = new unsigned char[size.value()];
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// Pad out texture data to be in a POT sized buffer for uploading to
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// a POT sized texture
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CopyAndPadTextureData(pixels, paddedPixels, width, height, paddedWidth,
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paddedHeight, stride, pixelsize);
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gl->fPixelStorei(
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LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)paddedPixels),
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GetAddressAlignment((ptrdiff_t)paddedWidth * pixelsize)));
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gl->fTexImage2D(target, border, internalformat, paddedWidth, paddedHeight,
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border, format, type, paddedPixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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delete[] static_cast<unsigned char*>(paddedPixels);
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return;
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}
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if (stride == width * pixelsize) {
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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gl->fTexImage2D(target, border, internalformat, width, height, border,
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format, type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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} else {
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// Use GLES-specific workarounds for GL_UNPACK_ROW_LENGTH; these are
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// implemented in TexSubImage2D.
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gl->fTexImage2D(target, border, internalformat, width, height, border,
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format, type, nullptr);
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TexSubImage2DHelper(gl, target, level, 0, 0, width, height, stride,
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pixelsize, format, type, pixels);
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}
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} else {
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// desktop GL (non-ES) path
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT,
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std::min(GetAddressAlignment((ptrdiff_t)pixels),
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GetAddressAlignment((ptrdiff_t)stride)));
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int rowLength = stride / pixelsize;
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, rowLength);
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gl->fTexImage2D(target, level, internalformat, width, height, border,
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format, type, pixels);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ROW_LENGTH, 0);
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gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 4);
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}
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}
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SurfaceFormat UploadImageDataToTexture(
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GLContext* gl, unsigned char* aData, const gfx::IntSize& aDataSize,
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const IntPoint& aDstOffset, int32_t aStride, SurfaceFormat aFormat,
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const nsIntRegion& aDstRegion, GLuint aTexture, const gfx::IntSize& aSize,
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size_t* aOutUploadSize, bool aNeedInit, GLenum aTextureUnit,
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GLenum aTextureTarget) {
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gl->MakeCurrent();
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gl->fActiveTexture(aTextureUnit);
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gl->fBindTexture(aTextureTarget, aTexture);
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GLenum format = 0;
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GLenum internalFormat = 0;
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GLenum type = 0;
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int32_t pixelSize = BytesPerPixel(aFormat);
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SurfaceFormat surfaceFormat = gfx::SurfaceFormat::UNKNOWN;
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MOZ_ASSERT(gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA ||
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gl->GetPreferredARGB32Format() == LOCAL_GL_RGBA);
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switch (aFormat) {
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case SurfaceFormat::B8G8R8A8:
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if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
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format = LOCAL_GL_BGRA;
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surfaceFormat = SurfaceFormat::R8G8B8A8;
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type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
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} else {
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format = LOCAL_GL_RGBA;
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surfaceFormat = SurfaceFormat::B8G8R8A8;
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type = LOCAL_GL_UNSIGNED_BYTE;
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}
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internalFormat = LOCAL_GL_RGBA;
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break;
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case SurfaceFormat::B8G8R8X8:
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// Treat BGRX surfaces as BGRA except for the surface
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// format used.
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if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
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format = LOCAL_GL_BGRA;
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surfaceFormat = SurfaceFormat::R8G8B8X8;
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type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
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} else {
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format = LOCAL_GL_RGBA;
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surfaceFormat = SurfaceFormat::B8G8R8X8;
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type = LOCAL_GL_UNSIGNED_BYTE;
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}
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internalFormat = LOCAL_GL_RGBA;
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break;
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case SurfaceFormat::R8G8B8A8:
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if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
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// Upload our RGBA as BGRA, but store that the uploaded format is
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// BGRA. (sample from R to get B)
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format = LOCAL_GL_BGRA;
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type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
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surfaceFormat = SurfaceFormat::B8G8R8A8;
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} else {
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format = LOCAL_GL_RGBA;
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type = LOCAL_GL_UNSIGNED_BYTE;
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surfaceFormat = SurfaceFormat::R8G8B8A8;
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}
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internalFormat = LOCAL_GL_RGBA;
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break;
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case SurfaceFormat::R8G8B8X8:
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// Treat RGBX surfaces as RGBA except for the surface
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// format used.
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if (gl->GetPreferredARGB32Format() == LOCAL_GL_BGRA) {
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format = LOCAL_GL_BGRA;
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type = LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV;
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surfaceFormat = SurfaceFormat::B8G8R8X8;
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} else {
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format = LOCAL_GL_RGBA;
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type = LOCAL_GL_UNSIGNED_BYTE;
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surfaceFormat = SurfaceFormat::R8G8B8X8;
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}
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internalFormat = LOCAL_GL_RGBA;
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break;
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case SurfaceFormat::R5G6B5_UINT16:
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internalFormat = format = LOCAL_GL_RGB;
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type = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
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surfaceFormat = SurfaceFormat::R5G6B5_UINT16;
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break;
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case SurfaceFormat::A8:
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if (gl->IsGLES()) {
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format = LOCAL_GL_LUMINANCE;
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internalFormat = LOCAL_GL_LUMINANCE;
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} else {
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format = LOCAL_GL_RED;
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internalFormat = LOCAL_GL_R8;
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}
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type = LOCAL_GL_UNSIGNED_BYTE;
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// We don't have a specific luminance shader
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surfaceFormat = SurfaceFormat::A8;
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break;
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case SurfaceFormat::A16:
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if (gl->IsGLES()) {
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format = LOCAL_GL_LUMINANCE;
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internalFormat = LOCAL_GL_LUMINANCE16;
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} else {
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format = LOCAL_GL_RED;
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internalFormat = LOCAL_GL_R16;
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}
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type = LOCAL_GL_UNSIGNED_SHORT;
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// We don't have a specific luminance shader
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surfaceFormat = SurfaceFormat::A8;
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pixelSize = 2;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Unhandled image surface format!");
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}
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if (aOutUploadSize) {
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*aOutUploadSize = 0;
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}
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if (surfaceFormat == gfx::SurfaceFormat::UNKNOWN) {
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return gfx::SurfaceFormat::UNKNOWN;
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}
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// We can only skip SubTextures if aOffset = 0 because we need the whole
|
|
// buffer
|
|
if (aNeedInit || (!ShouldUploadSubTextures(gl) && aDstOffset == IntPoint())) {
|
|
if (!CheckUploadBounds(aSize, aDataSize, IntPoint())) {
|
|
return SurfaceFormat::UNKNOWN;
|
|
}
|
|
// If the texture needs initialized, or we are unable to
|
|
// upload sub textures, then initialize and upload the entire
|
|
// texture.
|
|
TexImage2DHelper(gl, aTextureTarget, 0, internalFormat, aSize.width,
|
|
aSize.height, aStride, pixelSize, 0, format, type, aData);
|
|
|
|
if (aOutUploadSize && aNeedInit) {
|
|
uint32_t texelSize = GetBytesPerTexel(internalFormat, type);
|
|
size_t numTexels = size_t(aSize.width) * size_t(aSize.height);
|
|
*aOutUploadSize += texelSize * numTexels;
|
|
}
|
|
} else {
|
|
// Upload each rect in the region to the texture
|
|
for (auto iter = aDstRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
IntRect rect = iter.Get();
|
|
if (!CheckUploadBounds(rect.Size(), aDataSize, rect.TopLeft())) {
|
|
return SurfaceFormat::UNKNOWN;
|
|
}
|
|
|
|
const unsigned char* rectData =
|
|
aData + DataOffset(rect.TopLeft(), aStride, aFormat);
|
|
|
|
rect += aDstOffset;
|
|
TexSubImage2DHelper(gl, aTextureTarget, 0, rect.X(), rect.Y(),
|
|
rect.Width(), rect.Height(), aStride, pixelSize,
|
|
format, type, rectData);
|
|
}
|
|
}
|
|
|
|
return surfaceFormat;
|
|
}
|
|
|
|
SurfaceFormat UploadSurfaceToTexture(GLContext* gl, DataSourceSurface* aSurface,
|
|
const nsIntRegion& aDstRegion,
|
|
GLuint aTexture, const gfx::IntSize& aSize,
|
|
size_t* aOutUploadSize, bool aNeedInit,
|
|
const gfx::IntPoint& aSrcOffset,
|
|
const gfx::IntPoint& aDstOffset,
|
|
GLenum aTextureUnit,
|
|
GLenum aTextureTarget) {
|
|
DataSourceSurface::ScopedMap map(aSurface, DataSourceSurface::READ);
|
|
int32_t stride = map.GetStride();
|
|
SurfaceFormat format = aSurface->GetFormat();
|
|
gfx::IntSize size = aSurface->GetSize();
|
|
|
|
// only fail if we'll need the entire surface for initialization
|
|
if (aNeedInit && !CheckUploadBounds(aSize, size, aSrcOffset)) {
|
|
return SurfaceFormat::UNKNOWN;
|
|
}
|
|
|
|
unsigned char* data = map.GetData() + DataOffset(aSrcOffset, stride, format);
|
|
size.width -= aSrcOffset.x;
|
|
size.height -= aSrcOffset.y;
|
|
|
|
return UploadImageDataToTexture(gl, data, size, aDstOffset, stride, format,
|
|
aDstRegion, aTexture, aSize, aOutUploadSize,
|
|
aNeedInit, aTextureUnit, aTextureTarget);
|
|
}
|
|
|
|
bool CanUploadNonPowerOfTwo(GLContext* gl) {
|
|
if (!gl->WorkAroundDriverBugs()) return true;
|
|
|
|
// Some GPUs driver crash when uploading non power of two 565 textures.
|
|
return gl->Renderer() != GLRenderer::Adreno200 &&
|
|
gl->Renderer() != GLRenderer::Adreno205;
|
|
}
|
|
|
|
} // namespace gl
|
|
} // namespace mozilla
|