bgfx/examples/common/nanovg/nanovg_bgfx.h

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/*
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* Copyright 2011-2018 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#ifndef NANOVG_BGFX_H_HEADER_GUARD
#define NANOVG_BGFX_H_HEADER_GUARD
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#include <bgfx/bgfx.h>
namespace bx { struct AllocatorI; }
struct NVGcontext;
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struct NVGLUframebuffer
{
NVGcontext* ctx;
bgfx::FrameBufferHandle handle;
int image;
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bgfx::ViewId viewId;
};
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///
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NVGcontext* nvgCreate(int32_t _edgeaa, bgfx::ViewId _viewId, bx::AllocatorI* _allocator);
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///
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NVGcontext* nvgCreate(int32_t _edgeaa, bgfx::ViewId _viewId);
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///
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void nvgDelete(struct NVGcontext* _ctx);
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///
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void nvgSetViewId(struct NVGcontext* _ctx, bgfx::ViewId _viewId);
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///
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uint16_t nvgGetViewId(struct NVGcontext* _ctx);
// Helper functions to create bgfx framebuffer to render to.
// Example:
// float scale = 2;
// NVGLUframebuffer* fb = nvgluCreateFramebuffer(ctx, 100 * scale, 100 * scale, 0);
// nvgluSetViewFramebuffer(VIEW_ID, fb);
// nvgluBindFramebuffer(fb);
// nvgBeginFrame(ctx, 100, 100, scale);
// // renders anything offscreen
// nvgEndFrame(ctx);
// nvgluBindFramebuffer(NULL);
//
// // Pastes the framebuffer rendering.
// nvgBeginFrame(ctx, 1024, 768, scale);
// NVGpaint paint = nvgImagePattern(ctx, 0, 0, 100, 100, 0, fb->image, 1);
// nvgBeginPath(ctx);
// nvgRect(ctx, 0, 0, 100, 100);
// nvgFillPaint(ctx, paint);
// nvgFill(ctx);
// nvgEndFrame(ctx);
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///
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NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* _ctx, int32_t _width, int32_t _height, int32_t _imageFlags, bgfx::ViewId _viewId);
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///
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NVGLUframebuffer* nvgluCreateFramebuffer(NVGcontext* _ctx, int32_t _width, int32_t _height, int32_t _imageFlags);
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///
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void nvgluBindFramebuffer(NVGLUframebuffer* _framebuffer);
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///
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void nvgluDeleteFramebuffer(NVGLUframebuffer* _framebuffer);
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///
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void nvgluSetViewFramebuffer(bgfx::ViewId _viewId, NVGLUframebuffer* _framebuffer);
#endif // NANOVG_BGFX_H_HEADER_GUARD