116 lines
3.5 KiB
C++
116 lines
3.5 KiB
C++
#ifndef _POLYVOX_FILAMENT_PLATFORM_ANGLE_H
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#define _POLYVOX_FILAMENT_PLATFORM_ANGLE_H
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#include <d3d.h>
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#include <d3d11.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <GLES3/gl31.h>
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#include "backend/DriverEnums.h"
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#include "backend/platforms/OpenGLPlatform.h"
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#include "backend/Platform.h"
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#define FILAMENT_USE_EXTERNAL_GLES3
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#include "gl_headers.h"
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namespace filament::backend {
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/**
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* A concrete implementation of OpenGLPlatform that supports EGL with a headless swapchain and external D3D texture support.
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*/
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class PlatformANGLE : public OpenGLPlatform {
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public:
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PlatformANGLE(HANDLE d3dTextureHandle, uint32_t width, uint32_t height) noexcept;
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Driver* createDriver(void* sharedContext,
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const Platform::DriverConfig& driverConfig) noexcept override;
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Platform::SwapChain* createSwapChain(void* nativewindow, uint64_t flags) noexcept override;
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Platform::SwapChain* createSwapChain(uint32_t width, uint32_t height, uint64_t flags) noexcept override;
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GLuint glTextureId = 0;
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EGLSurface mCurrentDrawSurface = EGL_NO_SURFACE;
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EGLSurface mCurrentReadSurface = EGL_NO_SURFACE;
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EGLDisplay mEGLDisplay = EGL_NO_DISPLAY;
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EGLContext mEGLContext = EGL_NO_CONTEXT;
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EGLConfig mEGLConfig = EGL_NO_CONFIG_KHR;
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private:
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/**
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* This returns zero. This method can be overridden to return something more useful.
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* @return zero
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*/
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int getOSVersion() const noexcept override;
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// --------------------------------------------------------------------------------------------
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// OpenGLPlatform Interface
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void terminate() noexcept override;
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bool isSRGBSwapChainSupported() const noexcept override;
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void destroySwapChain(SwapChain* swapChain) noexcept override;
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void makeCurrent(SwapChain* drawSwapChain, SwapChain* readSwapChain) noexcept override;
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void commit(SwapChain* swapChain) noexcept override;
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bool canCreateFence() noexcept override;
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Fence* createFence() noexcept override;
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void destroyFence(Fence* fence) noexcept override;
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FenceStatus waitFence(Fence* fence, uint64_t timeout) noexcept override;
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OpenGLPlatform::ExternalTexture* createExternalImageTexture() noexcept override;
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void destroyExternalImage(ExternalTexture* texture) noexcept override;
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bool setExternalImage(void* externalImage, ExternalTexture* texture) noexcept override;
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/**
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* Logs glGetError() to slog.e
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* @param name a string giving some context on the error. Typically __func__.
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*/
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static void logEglError(const char* name) noexcept;
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/**
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* Calls glGetError() to clear the current error flags. logs a warning to log.w if
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* an error was pending.
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*/
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static void clearGlError() noexcept;
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/**
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* Always use this instead of eglMakeCurrent().
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*/
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EGLBoolean makeCurrent(EGLSurface drawSurface, EGLSurface readSurface) noexcept;
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// TODO: this should probably use getters instead.
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EGLSurface mEGLDummySurface = EGL_NO_SURFACE;
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HANDLE mD3DTextureHandle = nullptr;
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uint32_t mWidth = 0;
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uint32_t mHeight = 0;
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// supported extensions detected at runtime
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struct {
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struct {
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bool OES_EGL_image_external_essl3 = false;
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} gl;
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struct {
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bool KHR_no_config_context = false;
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bool KHR_gl_colorspace = false;
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} egl;
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} ext;
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private:
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void initializeGlExtensions() noexcept;
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EGLConfig findSwapChainConfig(uint64_t flags) const;
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};
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} // namespace filament
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#endif // _POLYVOX_FILAMENT_PLATFORM_ANGLE_H
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