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[mtl canvas, wip] Fixed wrong backdrop when segment ended right on tile's bottom boundary

This commit is contained in:
Martin Fouilleul 2023-03-30 16:41:41 +02:00
parent 93998852bb
commit 767841f9c6
3 changed files with 5 additions and 19 deletions
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2
examples/polygon/main.c
View File

@ -91,7 +91,7 @@ int main()
mg_fill();
*/
mg_move_to(400, 400);
mg_quadratic_to(600, 600, 800, 400);
mg_quadratic_to(600, 601, 800, 400);
mg_close_path();
mg_set_color_rgba(0, 0, 1, 1);
mg_fill();

1
src/mtl_renderer.h
View File

@ -79,6 +79,7 @@ typedef struct mg_mtl_tile_op
bool crossRight;
int windingOffset;
};
} mg_mtl_tile_op;
typedef struct mg_mtl_tile_queue

21
src/mtl_renderer.metal
View File

@ -180,7 +180,7 @@ void mtl_bin_segment_to_tiles(int segIndex,
bool test3 = mtl_is_left_of_segment(testPoint3, seg);
if( test0 != test3
&& seg->box.y <= testPoint0.y
&& seg->box.y < testPoint0.y
&& seg->box.w > testPoint0.y)
{
atomic_fetch_add_explicit(&tile->windingOffset, seg->windingIncrement, memory_order_relaxed);
@ -268,16 +268,12 @@ void mtl_setup_monotonic_quadratic(thread float2* p,
device mg_mtl_tile_queue* tileQueueBuffer,
device mg_mtl_tile_op* tileOpBuffer,
device atomic_int* tileOpCount,
int tileSize,
int debugID)
int tileSize)
{
//TODO: collapse with other segment kinds
int segIndex = atomic_fetch_add_explicit(segmentCount, 1, memory_order_relaxed);
device mg_mtl_segment* seg = &segmentBuffer[segIndex];
seg->debugID = debugID;
seg->kind = MG_MTL_QUADRATIC;
seg->pathIndex = pathIndex;
seg->box = (vector_float4){min(p[0].x, p[2].x),
@ -365,7 +361,6 @@ kernel void mtl_segment_setup(constant int* elementCount [[buffer(0)]],
int segIndex = atomic_fetch_add_explicit(segmentCount, 1, memory_order_relaxed);
device mg_mtl_segment* seg = &segmentBuffer[segIndex];
seg->debugID = 0;
seg->kind = elt->kind;
seg->pathIndex = elt->pathIndex;
seg->box = (vector_float4){min(p0.x, p3.x),
@ -408,8 +403,7 @@ kernel void mtl_segment_setup(constant int* elementCount [[buffer(0)]],
tileQueueBuffer,
tileOpBuffer,
tileOpCount,
tileSize[0],
1000 + count*10 + i);
tileSize[0]);
}
}
}
@ -572,15 +566,6 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
{
const device mg_mtl_segment* seg = &segmentBuffer[op->index];
/*
if(seg->kind == MG_MTL_LINE && op->crossRight)
{
outTexture.write(float4(1, 0, 0, 1), uint2(pixelCoord));
return;
}
*/
if(pixelCoord.y >= seg->box.y && pixelCoord.y < seg->box.w)
{
if(mtl_is_left_of_segment(float2(pixelCoord), seg))