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[mtl canvas] reorganizing the loop in render kernel to allow different commands

This commit is contained in:
Martin Fouilleul 2023-03-22 16:40:43 +01:00
parent e9ecd9d521
commit faf024a63a
1 changed files with 44 additions and 46 deletions
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90
src/mtl_shader.metal
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@ -402,22 +402,22 @@ kernel void RenderKernel(const device uint* tileCounters [[buffer(0)]],
float4 sampleColor[sampleCount];
float4 currentColor[sampleCount];
int currentShapeIndex[sampleCount];
int flipCount[sampleCount];
int flipCount[sampleCount];
for(int i=0; i<sampleCount; i++)
{
currentShapeIndex[i] = -1;
for(int i=0; i<sampleCount; i++)
{
flipCount[i] = 0;
sampleColor[i] = float4(0, 0, 0, 0);
currentColor[i] = float4(0, 0, 0, 0);
}
}
if(tileCounter >= RENDERER_TILE_BUFFER_COUNT)
{
int currentShapeIndex = -1;
if(tileCounter >= RENDERER_TILE_BUFFER_COUNT)
{
outTexture.write(float4(1, 0, 0, 1), gid);
return;
}
}
for(uint tileArrayIndex=0; tileArrayIndex < tileCounter; tileArrayIndex++)
{
@ -427,13 +427,45 @@ kernel void RenderKernel(const device uint* tileCounters [[buffer(0)]],
int triangleIndex = cmd & ~(MG_TILE_CMD_MASK);
const device mg_triangle_data* triangle = &triangleArray[triangleIndex];
if(currentShapeIndex != triangle->shapeIndex)
{
for(int sampleIndex = 0; sampleIndex<sampleCount; sampleIndex++)
{
if(flipCount[sampleIndex] & 0x01)
{
sampleColor[sampleIndex] = currentColor[sampleIndex];
}
float4 nextColor = triangle->color;
nextColor.rgb *= nextColor.a;
if(useTexture[0])
{
int2 samplePoint = samplePoints[sampleIndex];
float3 sampleFP = float3(float2(samplePoint).xy/(subPixelFactor*2.), 1);
float2 uv = (triangle->uvTransform * sampleFP).xy;
constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear);
float4 texColor = texAtlas.sample(smp, uv);
texColor.rgb *= texColor.a;
nextColor *= texColor;
}
currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor;
flipCount[sampleIndex] = 0;
}
currentShapeIndex = triangle->shapeIndex;
}
if(cmdKind == mg_cmd_color)
{
for(int sampleIndex=0; sampleIndex<sampleCount; sampleIndex++)
{
sampleColor[sampleIndex] = triangle->color;
float4 nextColor = triangle->color;
nextColor.rgb *= nextColor.a;
sampleColor[sampleIndex] = nextColor;
flipCount[sampleIndex] = 0;
currentShapeIndex[sampleIndex] = triangle->shapeIndex;
}
}
else
@ -454,14 +486,8 @@ kernel void RenderKernel(const device uint* tileCounters [[buffer(0)]],
bool fullTriangle = triangle->full;
int shapeIndex = triangle->shapeIndex;
float4 color = triangle->color;
color.rgb *= color.a;
int4 clip = triangle->box;
matrix_float3x3 uvTransform = triangle->uvTransform;
for(int sampleIndex = 0; sampleIndex < sampleCount; sampleIndex++)
{
int2 samplePoint = samplePoints[sampleIndex];
@ -485,35 +511,7 @@ kernel void RenderKernel(const device uint* tileCounters [[buffer(0)]],
if( fullTriangle
||(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= 0))
{
if(shapeIndex == currentShapeIndex[sampleIndex])
{
flipCount[sampleIndex]++;
}
else
{
if(flipCount[sampleIndex] & 0x01)
{
sampleColor[sampleIndex] = currentColor[sampleIndex];
}
float4 nextColor = color;
if(useTexture[0])
{
float3 sampleFP = float3(float2(samplePoint).xy/(subPixelFactor*2.), 1);
float2 uv = (uvTransform * sampleFP).xy;
constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear);
float4 texColor = texAtlas.sample(smp, uv);
texColor.rgb *= texColor.a;
nextColor *= texColor;
}
currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor;
currentShapeIndex[sampleIndex] = shapeIndex;
flipCount[sampleIndex] = 1;
}
flipCount[sampleIndex]++;
}
}
}