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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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24
src/canvas_modes.cpp
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@@ -1321,13 +1321,11 @@ void CanvasModeTransform::enter(kCanvasMode prev)
ShaderManager::u_vec4(kShaderUniform::Col, { 0, 0, 0, 0 });
layer->rtt(i).bindFramebuffer();
// copy framebuffer to action data
glReadPixels(
bb_min.x,
bb_min.y,
bb_sz.x,
bb_sz.y,
pp::renderer::gl::rgba_pixel_format(),
pp::renderer::gl::unsigned_byte_component_type(),
layer->rtt(i).readPixelsRgba8(
static_cast<int>(bb_min.x),
static_cast<int>(bb_min.y),
static_cast<int>(bb_sz.x),
static_cast<int>(bb_sz.y),
action->m_image[i].get());
for (int j = 0; j < 6; j++)
m_shape[j].draw_fill();
@@ -1426,13 +1424,11 @@ void CanvasModeTransform::leave(kCanvasMode next)
glViewport(0, 0, layer->rtt(i).getWidth(), layer->rtt(i).getHeight());
// save fb content for history
glReadPixels(
bb_min.x,
bb_min.y,
bb_sz.x,
bb_sz.y,
pp::renderer::gl::rgba_pixel_format(),
pp::renderer::gl::unsigned_byte_component_type(),
layer->rtt(i).readPixelsRgba8(
static_cast<int>(bb_min.x),
static_cast<int>(bb_min.y),
static_cast<int>(bb_sz.x),
static_cast<int>(bb_sz.y),
action->m_image[i].get());
// copy fb content to texture for blending
set_active_texture_unit(0);