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Route RTT region readbacks through backend

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This commit is contained in:
omigamedev
2026-06-04 21:01:13 +02:00
parent b9dbcd10d7
commit 15c58bfb21
8 changed files with 86 additions and 58 deletions
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25
src/canvas.cpp
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@@ -325,18 +325,14 @@ void Canvas::pick_update(int plane)
draw_merge(true, faces);
int i = plane;
m_layers_merge.rtt(i).bindFramebuffer();
if (!m_pick_data[plane])
m_pick_data[plane] = std::make_unique<glm::u8vec4[]>(m_width * m_height);
glReadPixels(
m_layers_merge.rtt(i).readPixelsRgba8(
0,
0,
m_width,
m_height,
rgba_pixel_format(),
unsigned_byte_component_type(),
m_pick_data[plane].get());
m_layers_merge.rtt(i).unbindFramebuffer();
});
m_pick_ready[plane] = true;
@@ -1030,13 +1026,11 @@ void Canvas::stroke_commit()
// save image before commit
glm::vec2 box_sz = zw(m_dirty_box[i]) - xy(m_dirty_box[i]);
action->m_image[i] = std::make_unique<uint8_t[]>(box_sz.x * box_sz.y * 4);
glReadPixels(
m_dirty_box[i].x,
m_dirty_box[i].y,
box_sz.x,
box_sz.y,
rgba_pixel_format(),
unsigned_byte_component_type(),
m_layers[m_current_layer_idx]->rtt(i).readPixelsRgba8(
static_cast<int>(m_dirty_box[i].x),
static_cast<int>(m_dirty_box[i].y),
static_cast<int>(box_sz.x),
static_cast<int>(box_sz.y),
action->m_image[i].get());
action->m_box[i] = m_dirty_box[i];
@@ -3105,7 +3099,12 @@ void Canvas::draw_objects(std::function<void(const glm::mat4& camera, const glm:
if (has_data)
{
action->m_image[i] = std::make_unique<uint8_t[]>(box_sz.x * box_sz.y * 4);
glReadPixels(bounds.x, bounds.y, box_sz.x, box_sz.y, rgba_pixel_format(), unsigned_byte_component_type(), action->m_image[i].get());
layer.rtt(i, frame).readPixelsRgba8(
static_cast<int>(bounds.x),
static_cast<int>(bounds.y),
static_cast<int>(box_sz.x),
static_cast<int>(box_sz.y),
action->m_image[i].get());
action->m_box[i] = bounds;
}
action->m_old_box[i] = layer.box(i, frame);