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These globals are now defined:
double duration; // The requested duration of the animation. double frame; // A value in [0, 1] of where we are in the animation.
This global is now defined:
GrBackendRenderTarget backEndRenderTarget;
GrBackendTexture backEndTextureRenderTarget;
Optional source image
These globals are now defined:
SkBitmap source; sk_sp<SkImage> image; GrBackendTexture backEndTexture; // GPU Only.
Note:
Adding comments with SK_FOLD_START and SK_FOLD_END creates foldable code
blocks.
These blocks will be folded by default and are useful for highlighting specific lines of code.
You can also use the keyboard shortcuts Ctrl+S and Ctrl+E in the code editor to set them.
These blocks will be folded by default and are useful for highlighting specific lines of code.
You can also use the keyboard shortcuts Ctrl+S and Ctrl+E in the code editor to set them.
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void draw(SkCanvas* canvas) { SkPaint pRed; pRed.setColor(SK_ColorRED); SkPaint pSolidBlue; pSolidBlue.setColor(SK_ColorBLUE); SkPaint pThirtyBlue; pThirtyBlue.setColor(SK_ColorBLUE); pThirtyBlue.setAlphaf(0.3); SkPaint alpha; alpha.setAlphaf(0.3); // Draw 4 solid red rectangles on the 0th layer. canvas->drawRect(SkRect::MakeLTRB(10, 10, 60, 60), pRed); canvas->drawRect(SkRect::MakeLTRB(150, 10, 200, 60), pRed); canvas->drawRect(SkRect::MakeLTRB(10, 70, 60, 120), pRed); canvas->drawRect(SkRect::MakeLTRB(150, 70, 200, 120), pRed); // Draw 2 blue rectangles that overlap. One is solid, the other // is 30% transparent. We should see purple from the right one, // the left one overlaps the red because it is opaque. canvas->drawRect(SkRect::MakeLTRB(30, 10, 80, 60), pSolidBlue); canvas->drawRect(SkRect::MakeLTRB(170, 10, 220, 60), pThirtyBlue); // Save a new layer. When the 1st layer gets merged onto the // 0th layer (i.e. when restore() is called), it will use the provided // paint to do so. The provided paint is set to have 30% opacity, but // it could also have things set like blend modes or image filters. canvas->saveLayer(nullptr, &alpha); // Draw the same blue overlapping rectangles as before. Notice in the // final output, we have two different shades of purple instead of the // solid blue overwriting the red. This proves the opacity was applied. canvas->drawRect(SkRect::MakeLTRB(30, 70, 80, 120), pSolidBlue); canvas->drawRect(SkRect::MakeLTRB(170, 70, 220, 120), pThirtyBlue); // We draw two more sets of overlapping red and blue rectangles. Notice // the solid blue overwrites the red. This proves that the opacity from // the alpha paint isn't available when the drawing happens - it only // matters when restore() is called. canvas->drawRect(SkRect::MakeLTRB(10, 130, 60, 180), pRed); canvas->drawRect(SkRect::MakeLTRB(30, 130, 80, 180), pSolidBlue); canvas->drawRect(SkRect::MakeLTRB(150, 130, 200, 180), pRed); canvas->drawRect(SkRect::MakeLTRB(170, 130, 220, 180), pThirtyBlue); canvas->restore();}Compilation Warnings/Errors
Runtime Errors
Run Details
GL Version: OpenGL ES 3.0 SwiftShader 4.1.0.5 GL Vendor: Google Inc. GL Renderer: Google SwiftShader GL Extensions: GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_depth_texture GL_OES_depth_texture_cube_map GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_EGL_sync GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_framebuffer_object GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_3D GL_OES_vertex_array_object GL_OES_vertex_half_float GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_draw_buffers GL_EXT_instanced_arrays GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_texture_compression_dxt1 GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_ARB_texture_rectangle GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_format_BGRA8888 GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_texture_filtering_hint GL_NV_depth_buffer_float2 GL_NV_fence GL_NV_framebuffer_blit GL_NV_read_depth GL_NV_read_depth_stencil GL_NV_read_stencil