tei/MapLibreParticleLab
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add possibility to link wgpu library from extern (#4272)

Browse Source
This commit is contained in:
Martin Marmsoler
2026-07-07 14:26:16 +02:00
committed by GitHub
parent 58d76e1617
commit 4cfc8a97f7
12 changed files with 169 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
CMakePresets.json
View File

@@ -205,6 +205,18 @@
"MLN_WITH_X11": "ON"
}
},
{
"name": "linux-webgpu-ffi",
"binaryDir": "${sourceDir}/build-linux-webgpu-wgpu-ffi",
"inherits": "linux",
"cacheVariables": {
"MLN_WITH_WEBGPU": "ON",
"MLN_WEBGPU_IMPL_WGPU": "ON",
"MLN_WEBGPU_IMPL_FFI": "ON",
"MLN_WITH_WAYLAND": "OFF",
"MLN_WITH_X11": "ON"
}
},
{
"name": "android-webgpu-dawn",
"displayName": "Android WebGPU (Dawn)",

2
cmake/webgpu.cmake
View File

@@ -115,7 +115,7 @@ if(MLN_WEBGPU_IMPL_DAWN)
if(TARGET mbgl-vendor-dawn)
target_link_libraries(mbgl-core PRIVATE mbgl-vendor-dawn)
endif()
elseif(MLN_WEBGPU_IMPL_WGPU)
elseif(MLN_WEBGPU_IMPL_WGPU OR MLN_WEBGPU_IMPL_FFI)
# Include wgpu-native integration
include(${PROJECT_SOURCE_DIR}/vendor/wgpu.cmake)
if(TARGET mbgl-vendor-wgpu)

1
include/mbgl/webgpu/offscreen_texture.hpp
View File

@@ -16,6 +16,7 @@ public:
bool isRenderable() override;
PremultipliedImage readStillImage() override;
const gfx::Texture2DPtr& getTexture() override;
gfx::Texture2DPtr takeTexture();
};
} // namespace webgpu

8
include/mbgl/webgpu/renderer_backend.hpp
View File

@@ -38,11 +38,11 @@ public:
// WebGPU-specific methods
void setInstance(void* instance);
void setDevice(void* device);
void setQueue(void* queue);
void setDevice(WGPUDevice device);
void setQueue(WGPUQueue queue);
void* getInstance() const;
void* getDevice() const;
void* getQueue() const;
WGPUDevice getDevice() const;
WGPUQueue getQueue() const;
void* getSurface() const;
// Surface texture access - can be overridden by platform backends

7
platform/default/include/mbgl/webgpu/headless_backend.hpp
View File

@@ -2,6 +2,7 @@
#include <mbgl/gfx/headless_backend.hpp>
#include <mbgl/webgpu/renderer_backend.hpp>
#include "mbgl/gfx/offscreen_texture.hpp"
#include <memory>
namespace mbgl {
@@ -17,6 +18,12 @@ public:
gfx::Renderable& getDefaultRenderable() override;
PremultipliedImage readStillImage() override;
RendererBackend* getRendererBackend() override;
/*!
* \brief takeTexture
* Take ownership of the current texture
* \return
*/
gfx::Texture2DPtr takeTexture();
// Override WebGPU-specific methods
void* getCurrentTextureView() override;

5
src/mbgl/style/sources/geojson_source.cpp
View File

@@ -30,6 +30,11 @@ const GeoJSONSource::Impl& GeoJSONSource::impl() const {
return static_cast<const Impl&>(*baseImpl);
}
/*!
* \brief GeoJSONSource::setURL
* Set the url to a geojson file which can be fetched
* \param url_
*/
void GeoJSONSource::setURL(const std::string& url_) {
url = url_;

12
src/mbgl/webgpu/headless_backend.cpp
View File

@@ -4,6 +4,7 @@
#include <mbgl/webgpu/offscreen_texture.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/webgpu/wgpu_cpp_compat.hpp>
#include <mbgl/webgpu/texture2d.hpp>
#if MLN_WEBGPU_IMPL_DAWN
#include <dawn/native/DawnNative.h>
@@ -84,6 +85,8 @@ public:
return PremultipliedImage(size);
}
gfx::Texture2DPtr takeTexture() { return static_cast<OffscreenTexture*>(offscreenTexture.get())->takeTexture(); }
private:
webgpu::Context& context;
Size size;
@@ -153,7 +156,7 @@ HeadlessBackend::HeadlessBackend(Size size_, SwapBehaviour swapBehaviour_, gfx::
setDevice(impl->device.Get());
setQueue(impl->queue.Get());
setInstance(impl->instance->Get());
#elif MLN_WEBGPU_IMPL_WGPU
#elif MLN_WEBGPU_IMPL_WGPU && !MLN_WEBGPU_IMPL_FFI
// wgpu-native backend initialization
wgpu::InstanceDescriptor instanceDesc = {};
impl->instance = wgpu::createInstance(instanceDesc);
@@ -332,6 +335,13 @@ PremultipliedImage HeadlessBackend::readStillImage() {
return PremultipliedImage(getSize());
}
gfx::Texture2DPtr HeadlessBackend::takeTexture() {
if (hasResource()) {
return getResource<HeadlessRenderableResource>().takeTexture();
}
return nullptr;
}
RendererBackend* HeadlessBackend::getRendererBackend() {
return this;
}

39
src/mbgl/webgpu/offscreen_texture.cpp
View File

@@ -28,16 +28,7 @@ public:
assert(!size.isEmpty());
// Create color texture
colorTexture = context.createTexture2D();
colorTexture->setSize(size);
colorTexture->setFormat(gfx::TexturePixelType::RGBA, type);
if (auto* webgpuTexture = static_cast<Texture2D*>(colorTexture.get())) {
webgpuTexture->setUsage(WGPUTextureUsage_TextureBinding | WGPUTextureUsage_CopyDst |
WGPUTextureUsage_CopySrc | WGPUTextureUsage_RenderAttachment);
webgpuTexture->setSizeChangedCallback([this](const Size& newSize) { handleResize(newSize); });
}
colorTexture->setSamplerConfiguration(
{gfx::TextureFilterType::Linear, gfx::TextureWrapType::Clamp, gfx::TextureWrapType::Clamp});
colorTexture = createColorTexture();
// Create depth/stencil texture if needed
// WebGPU requires a combined depth-stencil texture when both are needed
@@ -304,9 +295,33 @@ public:
return colorTexture;
}
gfx::Texture2DPtr takeTexture() {
if (!colorTexture) {
return nullptr;
}
auto taken = std::move(colorTexture);
colorTexture = createColorTexture();
return taken;
}
void setSizeListener(std::function<void(const Size&)> listener) { sizeListener = std::move(listener); }
private:
gfx::Texture2DPtr createColorTexture() {
auto texture = context.createTexture2D();
texture->setSize(size);
texture->setFormat(gfx::TexturePixelType::RGBA, type);
if (auto* webgpuTexture = static_cast<Texture2D*>(texture.get())) {
webgpuTexture->setUsage(WGPUTextureUsage_TextureBinding | WGPUTextureUsage_CopyDst |
WGPUTextureUsage_CopySrc | WGPUTextureUsage_RenderAttachment);
webgpuTexture->setSizeChangedCallback([this](const Size& newSize) { handleResize(newSize); });
}
texture->setSamplerConfiguration(
{gfx::TextureFilterType::Linear, gfx::TextureWrapType::Clamp, gfx::TextureWrapType::Clamp});
return texture;
}
void handleResize(const Size& newSize) {
if (newSize == size || newSize.isEmpty()) {
return;
@@ -360,5 +375,9 @@ const gfx::Texture2DPtr& OffscreenTexture::getTexture() {
return getResource<OffscreenTextureResource>().getTexture();
}
gfx::Texture2DPtr OffscreenTexture::takeTexture() {
return getResource<OffscreenTextureResource>().takeTexture();
}
} // namespace webgpu
} // namespace mbgl

15
src/mbgl/webgpu/render_pass.cpp
View File

@@ -25,7 +25,9 @@ public:
WGPURenderPassEncoder encoder = nullptr;
WGPUCommandEncoder commandEncoder = nullptr;
const gfx::UniformBufferArray* globalUniformBuffers = nullptr;
// Required here because it must life as long as the render pass
wgpu::TextureView colorView;
// Required here because it must life as long as the render pass
wgpu::TextureView depthStencilView;
wgpu::TextureFormat previousColorFormat = wgpu::TextureFormat::Undefined;
wgpu::TextureFormat previousDepthStencilFormat = wgpu::TextureFormat::Undefined;
@@ -183,6 +185,10 @@ RenderPass::RenderPass(CommandEncoder& commandEncoder_, const char* name, const
wgpuRenderPassEncoderSetScissorRect(impl->encoder, 0, 0, size.width, size.height);
} else {
mbgl::Log::Error(mbgl::Event::Render, "WebGPU: Failed to begin render pass");
#if MLN_WEBGPU_IMPL_WGPU
wgpuTextureViewRelease(impl->colorView);
wgpuTextureViewRelease(impl->depthStencilView);
#endif
impl->colorView = nullptr;
impl->depthStencilView = nullptr;
}
@@ -199,6 +205,15 @@ RenderPass::~RenderPass() {
wgpuRenderPassEncoderRelease(impl->encoder);
}
#if MLN_WEBGPU_IMPL_WGPU
if (impl->colorView) {
wgpuTextureViewRelease(impl->colorView);
}
if (impl->depthStencilView) {
wgpuTextureViewRelease(impl->depthStencilView);
}
#endif
auto& backend = static_cast<RendererBackend&>(commandEncoder.getContext().getBackend());
if (impl->colorFormatUpdated) {
backend.setColorFormat(impl->previousColorFormat);

12
src/mbgl/webgpu/renderer_backend.cpp
View File

@@ -35,8 +35,8 @@ namespace webgpu {
class RendererBackend::Impl {
public:
void* instance = nullptr;
void* device = nullptr;
void* queue = nullptr;
WGPUDevice device = nullptr;
WGPUQueue queue = nullptr;
void* surface = nullptr;
wgpu::TextureFormat depthStencilFormat = wgpu::TextureFormat::Undefined;
wgpu::TextureFormat colorFormat = wgpu::TextureFormat::Undefined;
@@ -134,11 +134,11 @@ void RendererBackend::setInstance(void* instance) {
impl->instance = instance;
}
void RendererBackend::setDevice(void* device) {
void RendererBackend::setDevice(WGPUDevice device) {
impl->device = device;
}
void RendererBackend::setQueue(void* queue) {
void RendererBackend::setQueue(WGPUQueue queue) {
impl->queue = queue;
}
@@ -146,11 +146,11 @@ void* RendererBackend::getInstance() const {
return impl->instance;
}
void* RendererBackend::getDevice() const {
WGPUDevice RendererBackend::getDevice() const {
return impl->device;
}
void* RendererBackend::getQueue() const {
WGPUQueue RendererBackend::getQueue() const {
return impl->queue;
}

6
vendor/webgpu.cmake vendored
View File

@@ -3,6 +3,8 @@
set(MLN_WEBGPU_IMPL_DAWN OFF CACHE STRING "WebGPU with Dawn implementation")
set(MLN_WEBGPU_IMPL_WGPU OFF CACHE STRING "WebGPU with wgpu implementation")
set(MLN_WEBGPU_IMPL_FFI OFF CACHE STRING "WebGPU with ffi interface")
set(MLN_WEBGPU_IMPL_WEBGPU_HEADER_DIR "" CACHE STRING "If not empty use this path to the webgpu.h file")
if(MLN_WITH_WEBGPU)
if(MLN_WEBGPU_IMPL_DAWN)
@@ -12,9 +14,11 @@ if(MLN_WITH_WEBGPU)
elseif(MLN_WEBGPU_IMPL_WGPU)
message(STATUS "Using wgpu as WebGPU backend")
add_compile_definitions(MLN_WEBGPU_IMPL_WGPU)
else()
message(FATAL_ERROR "MLN_WEBGPU_IMPL_DAWN or MLN_WEBGPU_IMPL_WGPU must be set")
endif()
if (MLN_WEBGPU_IMPL_FFI)
add_compile_definitions(MLN_WEBGPU_IMPL_FFI)
endif()
endif()

29
vendor/wgpu.cmake vendored
View File

@@ -11,9 +11,14 @@ endif()
message(STATUS "Configuring wgpu-native WebGPU implementation")
set(_mln_wgpu_source_dir "${PROJECT_SOURCE_DIR}/vendor/wgpu-native")
if ("${MLN_WEBGPU_IMPL_FFI_BUNDLED_WEBGPU_HEADER}" STREQUAL "")
set(WEBGPU_H_DIR ${_mln_wgpu_source_dir}/ffi/webgpu-headers)
else()
set(WEBGPU_H_DIR ${MLN_WEBGPU_IMPL_WEBGPU_HEADER_DIR})
endif()
# Check if wgpu-native exists
if(NOT EXISTS "${_mln_wgpu_source_dir}/ffi/webgpu-headers/webgpu.h")
if(NOT EXISTS "${WEBGPU_H_DIR}/webgpu.h")
message(FATAL_ERROR
"wgpu-native not found at ${_mln_wgpu_source_dir}. "
"Please ensure the wgpu-native submodule is initialized: "
@@ -78,6 +83,7 @@ macro(mln_wgpu_find_exact_library out_var out_description)
endmacro()
# On Android/iOS, use manual path search since find_library may not work with cross-compilation toolchains
if (NOT MLN_WEBGPU_IMPL_FFI)
macro(mln_wgpu_find_library)
if(ANDROID OR CMAKE_SYSTEM_NAME STREQUAL "iOS")
mln_wgpu_find_exact_library(WGPU_LIBRARY "wgpu-native library")
@@ -93,8 +99,9 @@ endmacro()
mln_wgpu_find_library()
mln_wgpu_find_exact_library(WGPU_STATIC_LIBRARY "wgpu-native static library")
endif()
if(NOT WGPU_LIBRARY OR MLN_WGPU_NATIVE_VERSION)
if(NOT MLN_WEBGPU_IMPL_FFI AND (NOT WGPU_LIBRARY OR MLN_WGPU_NATIVE_VERSION))
# Use a specific version of WGPU. This is required when to a rust application
# which uses wgpu directly instead of wgpu-native
if (MLN_WGPU_NATIVE_VERSION)
@@ -204,7 +211,7 @@ if(NOT EXISTS "${_webgpu_cpp_header}")
execute_process(
COMMAND ${PYTHON_EXECUTABLE} generate.py
--use-init-macros
--header ${_mln_wgpu_source_dir}/ffi/webgpu-headers/webgpu.h
--header ${WEBGPU_H_DIR}/webgpu.h
--output ${_webgpu_cpp_header}
WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}/vendor/webgpu-cpp"
RESULT_VARIABLE _gen_result
@@ -278,17 +285,19 @@ endif()
# Create interface library
add_library(mbgl-vendor-wgpu INTERFACE)
# For the ffi we don't link the wgpu library, because we link in the final stage with the rust wgpu version
target_link_libraries(mbgl-vendor-wgpu INTERFACE ${WGPU_LIBRARY})
# Add include directories for webgpu.h, wgpu.h, and C++ wrapper
target_include_directories(mbgl-vendor-wgpu
SYSTEM INTERFACE
${_webgpu-cpp-output_dir} # For webgpu.hpp webgpu/webgpu_cpp.h compatibility shim
${_mln_wgpu_source_dir}/ffi/webgpu-headers # webgpu.h
${WEBGPU_H_DIR}
${_mln_wgpu_source_dir}/ffi # wgpu.h
)
# Platform-specific system libraries that wgpu-native needs
if (NOT MLN_WEBGPU_IMPL_FFI)
if(APPLE)
target_link_libraries(mbgl-vendor-wgpu INTERFACE
"-framework Foundation"
@@ -315,6 +324,7 @@ else() # Linux
${CMAKE_DL_LIBS}
)
endif()
endif()
# Suppress warnings from wgpu headers
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
@@ -324,6 +334,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
)
endif()
if (NOT MLN_WEBGPU_IMPL_FFI)
set_target_properties(
mbgl-vendor-wgpu
PROPERTIES
@@ -332,3 +343,13 @@ set_target_properties(
INTERFACE_MAPLIBRE_AUTHOR "gfx-rs developers"
INTERFACE_MAPLIBRE_LICENSE "${PROJECT_SOURCE_DIR}/vendor/wgpu-native/LICENSE.MIT"
)
else()
set_target_properties(
mbgl-vendor-wgpu
PROPERTIES
INTERFACE_MAPLIBRE_NAME "wgpu-ffi"
INTERFACE_MAPLIBRE_URL "https://github.com/maplibre/maplibre-native"
INTERFACE_MAPLIBRE_AUTHOR "Maplibre Contributors"
INTERFACE_MAPLIBRE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE.md"
)
endif()