765 commits

Author	SHA1	Message	Date
Hermet Park	52f23f6acd	gl_engine: revised the effect logic ... - consolidated the effect implementation from renderer - applied the deferred initialization	2025-07-17 17:42:06 +09:00
Hermet Park	a80b0aa188	renderer: propagate picture blending to internal scene ... Users can regard a picture and its nested scene as a single entity, so blending options can be properly applied to the actual visual paint object.	2025-07-17 14:50:33 +09:00
Hermet Park	bc4afd8ef7	sw_engine: trimmed out unnecessary blending parameters	2025-07-17 12:13:47 +09:00
Hermet Park	15aafbfe62	sw_engine: support the fast drop shadow version ... The direct raster version has been restored with a proper fix for the out-of-range bug. see history: 78753eed31	2025-07-16 13:39:06 +09:00
Hermet Park	d88c2c1184	sw_engine: improved the dropshadow effect support ... - shadow rendering was skipped when the blur value was 0. it now correctly renders shadows without blur. - this also fixes the distance offset scalability. issue: https://github.com/thorvg/thorvg/issues/3602	2025-07-16 13:39:06 +09:00
Hermet Park	43a082798d	sw_engine: improved blending quality ... enhanced anti-aliasing in image blending by properly applying unpremultiply/premultiply computations during blending operations.	2025-07-15 12:24:25 +09:00
Hermet Park	4a0d17ba83	sw_engine: tint effect optimization++ ... skip interpolation when intensity is 1.0. since intensity adjustment is optional and computationally expensive, avoiding it in this case is worthwhile.	2025-07-15 00:00:03 +09:00
Hermet Park	d2b2fb02f0	sw_engine: rectifiy logic wrt overall blendings ... - minor optimization of the unpremultiply logic - exception handling for the unpremultipy logic for anti-aliasing quality - appropriate alpha pre/unpre multiplication is applied - clean code++ - updated doc blending equation issue: https://github.com/thorvg/thorvg/issues/1944	2025-07-14 16:48:10 +09:00
Hermet Park	f6a9efcc3f	sw_engine: rectified softlight blending equation ... slightly adjusted the equation for adobe/figma alignment	2025-07-10 20:25:31 +09:00
Hermet Park	ac12c8c9a3	renderer: fixed a wrong fillrule option ... - fixed to use the default option NonZero fillrule. - updated the doc about text font as well	2025-07-10 10:50:27 +09:00
Hermet Park	4b11fea32f	api: rename shape fill rule API for clarity ... Clarify the FillRule usage by associating it explicitly with color/gradient fills. C++ API * Result Shape::fill(FillRule r) -> Result Shape::fillRule(FillRule r) issue: https://github.com/thorvg/thorvg/issues/3116	2025-07-09 18:37:48 +09:00
Hermet Park	c9aba593e0	renderer: hotfix a regression of the partial rendering ... artifacts can be remained by wrong conditional logic. now it's fixed.	2025-07-09 18:09:32 +09:00
Hermet Park	8390cb1def	renderer: ++exception handling	2025-07-09 15:41:07 +09:00
Hermet Park	295d20f915	renderer: TODO++	2025-07-09 14:02:59 +09:00
Mira Grudzinska	7bb701b22e	renderer: fix render region for multiple masks ... Previously, when more than two masks were applied, the render region only took the first added mask into account. @Issue: https://github.com/thorvg/thorvg/issues/3600	2025-07-09 14:01:42 +09:00
Hermet Park	761259ca59	sw_engine: fix omitted update for zero opacity ... ensure the dirty region is updated when opacity becomes zero. a regression bug of the recent partial rendering. issue: https://github.com/orgs/thorvg/discussions/3570	2025-07-09 11:44:16 +09:00
Hermet Park	7e0f394c2c	wg_engine: corrected tint/tritone wrong alpha multiplication	2025-07-08 21:55:10 +09:00
Hermet Park	668c818240	gl_engine: corrected tint/tritone wrong alpha multiplication	2025-07-08 21:55:10 +09:00
Hermet Park	78753eed31	sw_engine: dropshadow stability++ ... removed the direct rendering optimization of the dropshadow, because it's a buggy.	2025-07-08 00:40:43 +09:00
Hermet Park	3fe7432ac5	common: added blending factor to tritone post-effect ... - introduced a blending factor to control the mix between the original color and the tritone effect. - improved Lottie compliance with this enhancement. - implemented the spec by all engines CAPI: * Tvg_Result tvg_scene_push_effect_tritone(Tvg_Paint* scene, int shadow_r, int shadow_g, int shadow_b, int midtone_r, int midtone_g, int midtone_b, int highlight_r, int highlight_g, int highlight_b); -> TVG_API Tvg_Result tvg_scene_push_effect_tritone(Tvg_Paint* scene, int shadow_r, int shadow_g, int shadow_b, int midtone_r, int midtone_g, int midtone_b, int highlight_r, int highlight_g, int highlight_b, int blend);	2025-07-07 15:31:45 +09:00
Hermet Park	53680eae2f	Revert "gl_engine: --unused code" ... This reverts commit d8c06add22. drop shadow has been broken...	2025-07-07 12:59:57 +09:00
Hermet Park	c216805a87	engines: fine-tune scene effect performance ... Skip scene effects whenever possible, based on predefined conditions.	2025-07-07 12:59:57 +09:00
Hermet Park	3f7cb2bbb5	engines: fixed tint effect issues ... - corrected the reversed black/white intensity multiplication. - made a minor adjustment to the luma equation. - updated and aligned the API documentation accordingly.	2025-07-05 12:43:20 +09:00
Hermet Park	d8c06add22	gl_engine: --unused code	2025-07-05 10:15:53 +09:00
Hermet Park	1d92a16739	common: chores wrt scene effect ... - corrected data type (float -> double) - guarantee to call va_end() - docs / samples revision - include cstdarg as an essential header	2025-07-04 17:17:34 +09:00
Hermet Park	f3fb04c63c	common: improve thread safety for partial rendering ... - clear resources on the main thread to safely remove resources associated with dirty regions. - skip redundant condition checks for unsafe disabled add calls.	2025-07-03 23:16:20 +09:00
Hermet Park	380d2c3f3f	sw_engine: tweak operations to better align with the designed bevaviors ... - presere source values in empty buffer - properly unpremultiply dst values before blending issue: https://github.com/thorvg/thorvg/issues/3072	2025-07-03 21:16:59 +09:00
Hermet Park	f59da6a79f	sw_engine: keep the code in a more primitive style	2025-07-03 15:13:58 +09:00
Hermet Park	5e17fe0034	sw_engine: ++clean code	2025-07-02 16:30:14 +09:00
Hermet Park	40d75c6276	api: fixed mis-aligned the ref count size, u8 -> u16 ... C++ API Modifications: * uint8_t Paint::unref() -> uint16_t Paint::ref() * uint8_t Paint::ref() -> uint16_t Paint::unref() * uint8_t Paint::refCnt() -> uint16_t Paint::refCnt() C API Modifications: * uint8_t tvg_paint_ref(...) -> uint16_t tvg_paint_ref(...) * uint8_t tvg_paint_unref(...) -> uint16_t tvg_paint_unref(...) * uint8_t tvg_paint_get_ref(...) -> uint16_t tvg_paint_get_ref(...)	2025-07-02 15:39:33 +09:00
Mira Grudzinska	581a304305	renderer: fix stub functions ... When partial rendering support is disabled the stub implementation of the RenderDirtyRegion struct had incomplete logic. Fixed	2025-07-02 10:09:40 +09:00
Sergii Liebodkin	8543099fcd	common: generalize bezier math ... added new functionality for bezier curves: 1. generate bezier curve as an arc 2. estimate the number of points for optimal tessellation 3. check that bezier curve is close to a straight line This functionality is useful for gl/wg renderers	2025-06-28 11:25:36 +09:00
Hermet Park	43f94f8b32	sw_engine: Fix potential memory violation in direct image drawing ... A potential memory violation issue was present when accessing image buffers, especially when the image was offset outside the visible screen region. This issue was accidentally discovered while testing particle effects. It is now properly handled with cleaner and safer code.	2025-06-26 23:09:21 +09:00
Hermet Park	f3d7e232ce	common: partial rendering stabilization++ ... There are more corner case issues after the partial rendering introduction, this covers all-in-one.	2025-06-26 20:21:04 +09:00
Mira Grudzinska	30662afba7	renderer: improve radial gradient handling ... This change ensures at the api level that if the focal point lies outside the end circle, it is projected onto the edge of the end circle. Additionally, if the start circle does not fully fit inside the end circle (after possible repositioning), its radius is reduced accordingly. The modification aligns with the SVG 1.1 standard (for fr = 0). Cases with fr > 0 are not covered by the SVG 1.1, and edge cases have been handled here to avoid numerical issues. Note: This update replaces previous behavior where gl handled the SVG 2.0 standard.	2025-06-24 21:23:26 +09:00
Mira Grudzinska	22742863f4	api: handling values <= 0 in strokeDash() api ... The API allows now values <= 0 for dashes and gaps. Negative values are treated as zero. The exception is when all provided values are <= 0, in which case the dash is ignored. This fixes the issue when dash = 0 was provided for strokes with round or butt caps - the dot was not drawn, even though it should have been. docs: the strokeDash API behavior's clarification for odd numbers of values in dashPattern and refinement of the accepted values.	2025-06-24 21:02:29 +09:00
Hermet Park	9b2bbc496e	renderer: --compiler warning	2025-06-23 17:11:47 +09:00
Hermet Park	caec92ddd3	infra: add the partial rendering build option ... allow users to set partial rendering as option to use, enabled by deault. -Dextra="partial_render, ..."	2025-06-23 16:04:48 +09:00
Hermet Park	2aabddd5a5	common: support static scene mode (internal) ... This adds support for a static scene mode, allowing a scene to be treated as a static image. In this mode, partial rendering for the inner drawable components is skipped. This is especially useful for scenes designed to be fully updated as a whole, such as those used in fully dynamic Lottie contents. issue: https://github.com/thorvg/thorvg/issues/1747	2025-06-23 16:04:48 +09:00
Hermet Park	1d59099a48	sw_engine: add support for partial rendering ... This implements partial rendering with RenderDirtyRegion interfaces issue: https://github.com/thorvg/thorvg/issues/1747	2025-06-23 16:04:48 +09:00
Hermet Park	07331eb76c	renderer: add partial rendering support ... Partial Rendering refers to a rendering technique where only a portion of the scene or screen is updated, rather than redrawing the entire output. It is commonly used as a performance optimization strategy, focusing on redrawing only the regions that have changed, often called dirty regions. This introduces RenderDirtyRegion, which assists in collecting a compact dirty region from render tasks. To efficient data-processing, this divide the screen region with a designated size of partition and handles the partitl rendering computation with a divide-conquer metholodgy. Each backend can utilize this class to support efficient partial rendering. This is implemented using a Line Sweep and Subdivision Merging O(NlogN). The basic per-frame workflow is as follows: 0. RenderDirtyRegion::init() //set the screen size to properly partition the regions 1. RenderDirtyRegion::prepare() //Call this in Renderer::preRender(). 2. RenderDirtyRegion::add() //Add all dirty paints for the frame before rendering. 3. RenderDirtyRegion::commit() //Generate the partial rendering region list before rendering. 4. RenderDirtyRegion::partition() //Get a certian partition 5. RenderDirtyRegion::get() //Retrieve the current dirty region list of a partition and use it when drawing paints. 6. RenderDirtyRegion::clear() //Reset the state. RenderMethod introduced for 2 utilities for paritial renderings 1. RenderMethod::damage() //add a force dirty region, especially useful for scene effects 2. RenderMethod::partial() //toggle the partial rendering feature issue: https://github.com/thorvg/thorvg/issues/1747	2025-06-23 16:04:48 +09:00
Hermet Park	8e8bfff6ab	sw_engine: small optimization with a fast-clipping region access ... Now the engine can access intermidate rle sections with a specific y ranges, It doesn't need full iterations.	2025-06-23 16:04:48 +09:00
Hermet Park	0cb9c44074	sw_engine: enable render region clipping during rendering ... Implemented support for clipping shapes and images using a render region bounding box at render time. This allows partial drawing of content, laying the groundwork for upcoming partial rendering functionality. for fast access of the drawing region from the linear rle data, we introduced the binary search for begin/end of rle instead of additional y index buffer. There is a reason for not using a y-index buffer: the shapes in the RLE are not single, continuous shapes but multiple shapes scattered across the space. which means that we need a double-associated data structure per shapes for y indexing, and this data preparation wouldn't be cheaper enough than realtime binary search especially animated data. issue: https://github.com/thorvg/thorvg/issues/1747	2025-06-23 16:04:48 +09:00
Sergii Liebodkin	2c048f72e8	gl_engine: remove the outdated tesseletion mechanics ... After introducing Triangle Fan-like Triangulation there is no necessary to have heavy and complex tessellator All unused entities are removed	2025-06-19 02:10:50 +09:00
Mira Grudzinska	3426531dd2	sw_engine: fix focal point clamping ... This approach should be introduced in d8ebd8b4f5. Using FLOAT_EPSILON is not sufficient due to numerical precision, since it's later inverted, and its very small value leads to significant errors during inversion.	2025-06-18 22:07:07 +09:00
Hermet Park	a698504714	renderer: rectify the update flag once more ... - image tag is a bit ambuguous for vector type picture - engine doesn't need to take care of the none flag update because renderer filters that case.	2025-06-18 15:49:47 +09:00
Mira Grudzinska	d8ebd8b4f5	sw_engine: clamp focal point to the edge ... If the radial gradient's focal point lies outside the end circle, it's projected onto the edge. A slight inward offset is applied to avoid numerical issues. Note: Focal point support in the sw and wg engines is consistent with the SVG 1.1 standard, whereas the gl engine aligns with the SVG 2.0 standard.	2025-06-18 14:39:02 +09:00
Mira Grudzinska	b8ef2d44d9	avx/neon: remove double increment of the value ... The span was incremented both in the for loop instruction (ARRAY_FOREACH) and inside the loop body. Fixed. @Issue: https://github.com/thorvg/thorvg/issues/3547	2025-06-18 14:39:02 +09:00
Hermet Park	39644a676d	renderer: hotfix ... hotfix of regression by 39b0f87cb3	2025-06-18 11:05:05 +09:00
Hermet Park	bd3d92f599	gl_engine: ++safety	2025-06-17 18:52:07 +09:00