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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/renderer/renderer_module.h"
#include "base/debug/trace_event.h"
#include "base/logging.h"
#include "cobalt/renderer/rasterizer/blitter/hardware_rasterizer.h"
#include "cobalt/renderer/rasterizer/blitter/software_rasterizer.h"
#include "cobalt/renderer/rasterizer/egl/hardware_rasterizer.h"
#include "cobalt/renderer/rasterizer/egl/software_rasterizer.h"
#include "cobalt/renderer/rasterizer/skia/hardware_rasterizer.h"
#include "cobalt/renderer/rasterizer/stub/rasterizer.h"
namespace cobalt {
namespace renderer {
namespace {
scoped_ptr<rasterizer::Rasterizer> CreateRasterizer(
backend::GraphicsContext* graphics_context,
const RendererModule::Options& options) {
TRACE_EVENT0("cobalt::renderer", "CreateRasterizer");
#if COBALT_FORCE_STUB_RASTERIZER
return scoped_ptr<rasterizer::Rasterizer>(new rasterizer::stub::Rasterizer());
#else
#if SB_HAS(GLES2)
#if COBALT_FORCE_SOFTWARE_RASTERIZER
return scoped_ptr<rasterizer::Rasterizer>(
new rasterizer::egl::SoftwareRasterizer(
graphics_context, options.surface_cache_size_in_bytes,
options.purge_skia_font_caches_on_destruction));
#elif defined(COBALT_FORCE_DIRECT_GLES_RASTERIZER)
// This rasterizer uses offscreen_target_cache_size_in_bytes instead of
// surface_cache_size_in_bytes.
DCHECK_EQ(0, options.surface_cache_size_in_bytes);
return scoped_ptr<rasterizer::Rasterizer>(
new rasterizer::egl::HardwareRasterizer(
graphics_context, options.skia_glyph_texture_atlas_dimensions.width(),
options.skia_glyph_texture_atlas_dimensions.height(),
options.skia_cache_size_in_bytes,
options.scratch_surface_cache_size_in_bytes,
options.offscreen_target_cache_size_in_bytes,
options.purge_skia_font_caches_on_destruction));
#else
// This rasterizer uses surface_cache_size_in_bytes instead of
// offscreen_target_cache_size_in_bytes.
DCHECK_EQ(0, options.offscreen_target_cache_size_in_bytes);
return scoped_ptr<rasterizer::Rasterizer>(
new rasterizer::skia::HardwareRasterizer(
graphics_context, options.skia_glyph_texture_atlas_dimensions.width(),
options.skia_glyph_texture_atlas_dimensions.height(),
options.skia_cache_size_in_bytes,
options.scratch_surface_cache_size_in_bytes,
options.surface_cache_size_in_bytes,
options.purge_skia_font_caches_on_destruction));
#endif // COBALT_FORCE_SOFTWARE_RASTERIZER
#elif SB_HAS(BLITTER)
#if COBALT_FORCE_SOFTWARE_RASTERIZER
return scoped_ptr<rasterizer::Rasterizer>(
new rasterizer::blitter::SoftwareRasterizer(
graphics_context, options.surface_cache_size_in_bytes,
options.purge_skia_font_caches_on_destruction));
#else
return scoped_ptr<rasterizer::Rasterizer>(
new rasterizer::blitter::HardwareRasterizer(
graphics_context, options.skia_glyph_texture_atlas_dimensions.width(),
options.skia_glyph_texture_atlas_dimensions.height(),
options.scratch_surface_cache_size_in_bytes,
options.surface_cache_size_in_bytes,
options.software_surface_cache_size_in_bytes,
options.purge_skia_font_caches_on_destruction));
#endif // COBALT_FORCE_SOFTWARE_RASTERIZER
#else
#error "Either GLES2 or the Starboard Blitter API must be available."
return scoped_ptr<rasterizer::Rasterizer>();
#endif
#endif // #if COBALT_FORCE_STUB_RASTERIZER
}
} // namespace
void RendererModule::Options::SetPerPlatformDefaultOptions() {
// If there is no need to frequently flip the display buffer, then enable
// support for an optimization where the scene is not re-rasterized each frame
// if it has not changed from the last frame.
submit_even_if_render_tree_is_unchanged =
SB_MUST_FREQUENTLY_FLIP_DISPLAY_BUFFER;
create_rasterizer_function = base::Bind(&CreateRasterizer);
}
} // namespace renderer
} // namespace cobalt