blob: f5fd4c70343fb612e4108f6935b5caa78cb05a8c [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <algorithm>
#include "impeller/entity/contents/gradient_generator.h"
#include "flutter/fml/logging.h"
#include "impeller/entity/contents/content_context.h"
#include "impeller/geometry/gradient.h"
#include "impeller/renderer/context.h"
#include "impeller/renderer/render_pass.h"
#include "impeller/renderer/texture.h"
namespace impeller {
std::shared_ptr<Texture> CreateGradientTexture(
const std::vector<Color>& colors,
const std::vector<Scalar>& stops,
const std::shared_ptr<impeller::Context>& context) {
auto gradient_data = CreateGradientBuffer(colors, stops);
if (gradient_data.texture_size == 0) {
FML_DLOG(ERROR) << "Invalid gradient data.";
return nullptr;
}
impeller::TextureDescriptor texture_descriptor;
texture_descriptor.storage_mode = impeller::StorageMode::kHostVisible;
texture_descriptor.format = PixelFormat::kR8G8B8A8UNormInt;
texture_descriptor.size = {gradient_data.texture_size, 1};
auto texture =
context->GetResourceAllocator()->CreateTexture(texture_descriptor);
if (!texture) {
FML_DLOG(ERROR) << "Could not create Impeller texture.";
return nullptr;
}
auto mapping = std::make_shared<fml::DataMapping>(gradient_data.color_bytes);
if (!texture->SetContents(mapping)) {
FML_DLOG(ERROR) << "Could not copy contents into Impeller texture.";
return nullptr;
}
texture->SetLabel(impeller::SPrintF("Gradient(%p)", texture.get()).c_str());
return texture;
}
} // namespace impeller