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Route RTT blit readback through renderer GL

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This commit is contained in:
omigamedev
2026-06-03 06:31:41 +02:00
parent ae69f7437f
commit 3128a0d309
6 changed files with 487 additions and 73 deletions
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76
src/renderer_gl/opengl_capabilities.cpp
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@@ -608,6 +608,82 @@ pp::foundation::Result<OpenGlTexture2DReadbackResult> readback_opengl_texture_2d
return pp::foundation::Result<OpenGlTexture2DReadbackResult>::success(result);
}
pp::foundation::Status blit_opengl_framebuffer(
OpenGlFramebufferBlit blit,
OpenGlFramebufferBlitDispatch dispatch) noexcept
{
if (dispatch.get_integer == nullptr
|| dispatch.bind_framebuffer == nullptr
|| dispatch.blit_framebuffer == nullptr) {
return pp::foundation::Status::invalid_argument("OpenGL framebuffer blit dispatch callbacks must not be null");
}
if (blit.source_rect.x1 <= blit.source_rect.x0
|| blit.source_rect.y1 <= blit.source_rect.y0
|| blit.destination_rect.x1 <= blit.destination_rect.x0
|| blit.destination_rect.y1 <= blit.destination_rect.y0
|| blit.mask == 0U
|| blit.filter == 0U) {
return pp::foundation::Status::invalid_argument("OpenGL framebuffer blit parameters are invalid");
}
std::int32_t previous_draw_framebuffer = 0;
std::int32_t previous_read_framebuffer = 0;
dispatch.get_integer(draw_framebuffer_binding_query(), &previous_draw_framebuffer);
dispatch.get_integer(read_framebuffer_binding_query(), &previous_read_framebuffer);
dispatch.bind_framebuffer(draw_framebuffer_target(), blit.destination_framebuffer);
dispatch.bind_framebuffer(read_framebuffer_target(), blit.source_framebuffer);
dispatch.blit_framebuffer(
blit.source_rect.x0,
blit.source_rect.y0,
blit.source_rect.x1,
blit.source_rect.y1,
blit.destination_rect.x0,
blit.destination_rect.y0,
blit.destination_rect.x1,
blit.destination_rect.y1,
blit.mask,
blit.filter);
dispatch.bind_framebuffer(draw_framebuffer_target(), static_cast<std::uint32_t>(previous_draw_framebuffer));
dispatch.bind_framebuffer(read_framebuffer_target(), static_cast<std::uint32_t>(previous_read_framebuffer));
return pp::foundation::Status::success();
}
pp::foundation::Status readback_opengl_framebuffer(
OpenGlFramebufferReadback readback,
OpenGlFramebufferReadbackDispatch dispatch) noexcept
{
if (dispatch.get_integer == nullptr
|| dispatch.bind_framebuffer == nullptr
|| dispatch.read_pixels == nullptr) {
return pp::foundation::Status::invalid_argument(
"OpenGL framebuffer readback dispatch callbacks must not be null");
}
if (readback.width <= 0
|| readback.height <= 0
|| readback.format.pixel_format == 0U
|| readback.format.component_type == 0U
|| readback.format.bytes_per_pixel == 0U
|| readback.pixels == nullptr) {
return pp::foundation::Status::invalid_argument("OpenGL framebuffer readback parameters are invalid");
}
std::int32_t previous_read_framebuffer = 0;
dispatch.get_integer(read_framebuffer_binding_query(), &previous_read_framebuffer);
dispatch.bind_framebuffer(read_framebuffer_target(), readback.framebuffer);
dispatch.read_pixels(
readback.x,
readback.y,
readback.width,
readback.height,
readback.format.pixel_format,
readback.format.component_type,
readback.pixels);
dispatch.bind_framebuffer(read_framebuffer_target(), static_cast<std::uint32_t>(previous_read_framebuffer));
return pp::foundation::Status::success();
}
std::uint32_t extension_count_query() noexcept
{
return gl_num_extensions;