Index: cc/output/gl_renderer.cc |
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc |
index 60c09db528d65ab2cc7292d06c37d04463f4af72..1b25a88dbae74901cc5f258c76f614b435ff4039 100644 |
--- a/cc/output/gl_renderer.cc |
+++ b/cc/output/gl_renderer.cc |
@@ -402,6 +402,7 @@ GLRenderer::GLRenderer(const RendererSettings* settings, |
use_blend_equation_advanced_coherent_ = |
context_caps.blend_equation_advanced_coherent; |
use_occlusion_query_ = context_caps.occlusion_query; |
+ use_swap_with_bounds_ = context_caps.swap_buffers_with_bounds; |
InitializeSharedObjects(); |
} |
@@ -417,6 +418,8 @@ GLRenderer::~GLRenderer() { |
} |
bool GLRenderer::CanPartialSwap() { |
+ if (use_swap_with_bounds_) |
+ return false; |
auto* context_provider = output_surface_->context_provider(); |
return context_provider->ContextCapabilities().post_sub_buffer; |
} |
@@ -2591,7 +2594,9 @@ void GLRenderer::SwapBuffers(std::vector<ui::LatencyInfo> latency_info) { |
OutputSurfaceFrame output_frame; |
output_frame.latency_info = std::move(latency_info); |
output_frame.size = surface_size; |
- if (use_partial_swap_) { |
+ if (use_swap_with_bounds_) { |
+ output_frame.content_bounds = current_frame()->root_content_bounds; |
+ } else if (use_partial_swap_) { |
// If supported, we can save significant bandwidth by only swapping the |
// damaged/scissored region (clamped to the viewport). |
swap_buffer_rect_.Intersect(gfx::Rect(surface_size)); |