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[mtl canvas] use same ccw test for testing against diagonal and testing against hull

This commit is contained in:
Martin Fouilleul 2023-04-08 10:04:17 +02:00
parent 2b7aadf180
commit effd8f1dd0
6 changed files with 5017 additions and 4000 deletions
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2
build.sh
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@ -1,6 +1,6 @@
#!/bin/bash
DEBUG_FLAGS="-g -O2 -DDEBUG -DLOG_COMPILE_DEBUG"
DEBUG_FLAGS="-g -DDEBUG -DLOG_COMPILE_DEBUG"
#DEBUG_FLAGS="-O3"
#--------------------------------------------------------------

52
examples/tiger/main.c
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@ -84,8 +84,11 @@ int main()
bool tracked = false;
vec2 trackPoint = {0};
f32 zoom = 1;
f32 startX = 300, startY = 200;
bool singlePath = false;
int singlePathIndex = 0;
f64 frameTime = 0;
@ -135,6 +138,43 @@ int main()
startY = mousePos.y - pinY*zoom;
} break;
case MP_EVENT_KEYBOARD_KEY:
{
if(event.key.action == MP_KEY_PRESS || event.key.action == MP_KEY_REPEAT)
{
switch(event.key.code)
{
case MP_KEY_SPACE:
singlePath = !singlePath;
break;
case MP_KEY_UP:
{
if(event.key.mods & MP_KEYMOD_SHIFT)
{
singlePathIndex++;
}
else
{
zoom += 0.001;
}
} break;
case MP_KEY_DOWN:
{
if(event.key.mods & MP_KEYMOD_SHIFT)
{
singlePathIndex--;
}
else
{
zoom -= 0.001;
}
} break;
}
}
} break;
default:
break;
}
@ -155,10 +195,16 @@ int main()
mg_matrix_push((mg_mat2x3){zoom, 0, startX,
0, zoom, startY});
draw_tiger();
draw_tiger(singlePath, singlePathIndex);
if(singlePath)
{
printf("display single path %i\n", singlePathIndex);
}
printf("viewpos = (%f, %f), zoom = %f\n", startX, startY, zoom);
mg_matrix_pop();
/*
// text
mg_set_color_rgba(0, 0, 1, 1);
mg_set_font(font);
@ -171,7 +217,7 @@ int main()
1./frameTime);
mg_text_outlines(text);
mg_fill();
*/
printf("Milepost vector graphics test program (frame time = %fs, fps = %f)...\n",
frameTime,
1./frameTime);

41
examples/tiger/svg2mg.py
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@ -54,7 +54,7 @@ class svgContext:
if rel:
x += self.cp[0]
y += self.cp[1]
print("\tmg_move_to(" + f2s(x) + ", " + f2s(y) + ");")
print("\t\tmg_move_to(" + f2s(x) + ", " + f2s(y) + ");")
self.sp = (x, y)
self.cp = (x, y)
self.rp = self.cp
@ -67,7 +67,7 @@ class svgContext:
y2 += self.cp[1]
x3 += self.cp[0]
y3 += self.cp[1]
print("\tmg_cubic_to(" + f2s(x1) + ", " + f2s(y1) + ", " + f2s(x2) + ", " + f2s(y2) + ", " + f2s(x3) + ", " + f2s(y3) + ");")
print("\t\tmg_cubic_to(" + f2s(x1) + ", " + f2s(y1) + ", " + f2s(x2) + ", " + f2s(y2) + ", " + f2s(x3) + ", " + f2s(y3) + ");")
self.rp = (x2, y2)
self.cp = (x3, y3)
@ -79,7 +79,7 @@ class svgContext:
y3 += self.cp[1]
x1 = 2*self.cp[0] - self.rp[0]
y1 = 2*self.cp[1] - self.rp[1]
print("\tmg_cubic_to(" + f2s(x1) + ", " + f2s(y1) + ", " + f2s(x2) + ", " + f2s(y2) + ", " + f2s(x3) + ", " + f2s(y3) + ");")
print("\t\tmg_cubic_to(" + f2s(x1) + ", " + f2s(y1) + ", " + f2s(x2) + ", " + f2s(y2) + ", " + f2s(x3) + ", " + f2s(y3) + ");")
self.rp = (x2, y2)
self.cp = (x3, y3)
@ -87,7 +87,7 @@ class svgContext:
if rel:
x1 += self.cp[0]
y1 += self.cp[1]
print("\tmg_line_to(" + f2s(x1) + ", " + f2s(y1) + ");")
print("\t\tmg_line_to(" + f2s(x1) + ", " + f2s(y1) + ");")
self.cp = (x1, y1)
self.rp = self.cp
@ -95,12 +95,12 @@ class svgContext:
if rel:
y1 += self.cp[1]
x1 = self.cp[0]
print("\tmg_line_to(" + f2s(x1) + ", " + f2s(y1) + ");")
print("\t\tmg_line_to(" + f2s(x1) + ", " + f2s(y1) + ");")
self.cp = (x1, y1)
self.rp = self.cp
def close_path(self):
print("\tmg_close_path();");
print("\t\tmg_close_path();");
self.cp = self.rp = self.sp
def print_path(path, ctx):
@ -190,13 +190,17 @@ def parse_color(s):
tree = et.parse('./Ghostscript_Tiger.svg')
ctx = svgContext()
print("void draw_tiger()")
print("void draw_tiger(bool singlePath, int singlePathIndex)")
print("{")
for g in tree.iter('{http://www.w3.org/2000/svg}g'):
pathIndex = 0;
for g in tree.iter('{http://www.w3.org/2000/svg}g'):
for path in g.findall('{http://www.w3.org/2000/svg}path'):
ctx.reset()
print("\tif(!singlePath || singlePathIndex == "+ str(pathIndex) +")")
print("\t{")
print_path(path, ctx)
fill = g.get('fill')
@ -205,22 +209,31 @@ for g in tree.iter('{http://www.w3.org/2000/svg}g'):
if fill != None and fill != "none":
(r, g, b) = parse_color(fill)
print("\tmg_set_color_rgba(" + f2s(r) + ", " + f2s(g) + ", " + f2s(b) + ", 1);")
print("\tmg_fill();")
print("\t\tmg_set_color_rgba(" + f2s(r) + ", " + f2s(g) + ", " + f2s(b) + ", 1);")
print("\t\tmg_fill();")
print("\t}")
pathIndex += 1
if stroke != None and stroke != "none":
print("\tif(!singlePath || singlePathIndex == "+ str(pathIndex) +")")
print("\t{")
if stroke_width != None:
print("\tmg_set_width(" + stroke_width + ");");
print("\t\tmg_set_width(" + stroke_width + ");");
else:
print("\tmg_set_width(1);");
print("\t\tmg_set_width(1);");
(r, g, b) = parse_color(stroke)
if fill != None:
ctx.reset()
print_path(path, ctx)
print("\tmg_set_color_rgba(" + f2s(r) + ", " + f2s(g) + ", " + f2s(b) + ", 1);")
print("\tmg_stroke();")
print("\t\tmg_set_color_rgba(" + f2s(r) + ", " + f2s(g) + ", " + f2s(b) + ", 1);")
print("\t\tmg_stroke();")
print("\t}")
pathIndex += 1
if (stroke == None or stroke == 'none') and (fill == None or fill == ''):
print("error, group " + g.get("id") + " has no command")

8760
examples/tiger/tiger.c
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File diff suppressed because it is too large Load Diff

9
src/mtl_renderer.m
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@ -19,7 +19,8 @@
#define LOG_SUBSYSTEM "Graphics"
const int MG_MTL_INPUT_BUFFERS_COUNT = 3,
MG_MTL_TILE_SIZE = 16;
MG_MTL_TILE_SIZE = 16,
MG_MTL_MSAA_COUNT = 1;
typedef struct mg_mtl_canvas_backend
{
@ -52,6 +53,8 @@ typedef struct mg_mtl_canvas_backend
id<MTLBuffer> tileOpCountBuffer;
id<MTLBuffer> screenTilesBuffer;
int msaaCount;
} mg_mtl_canvas_backend;
@ -807,6 +810,9 @@ void mg_mtl_canvas_render(mg_canvas_backend* interface,
[rasterEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:0 atIndex:2];
[rasterEncoder setBuffer:backend->segmentBuffer offset:0 atIndex:3];
[rasterEncoder setBytes:&tileSize length:sizeof(int) atIndex:4];
[rasterEncoder setBytes:&backend->msaaCount length:sizeof(int) atIndex:5];
[rasterEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:6];
[rasterEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:7];
[rasterEncoder setTexture:backend->outTexture atIndex:0];
@ -900,6 +906,7 @@ mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface)
backend = malloc_type(mg_mtl_canvas_backend);
memset(backend, 0, sizeof(mg_mtl_canvas_backend));
backend->msaaCount = MG_MTL_MSAA_COUNT;
backend->surface = surface;
//NOTE(martin): setup interface functions

153
src/mtl_renderer.metal
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@ -290,24 +290,44 @@ int mtl_side_of_segment(float2 p, const device mg_mtl_segment* seg, mtl_log_cont
}
else
{
// eval based on diagonal
float alpha = (seg->box.w - seg->box.y)/(seg->box.z - seg->box.x);
float ofs = seg->box.w - seg->box.y;
float dx = p.x - seg->box.x;
float dy = p.y - seg->box.y;
float2 a, b, c;
switch(seg->config)
{
case MG_MTL_TL:
a = seg->box.xy;
b = seg->box.zw;
break;
if( (seg->config == MG_MTL_BR && dy >= alpha*dx)
||(seg->config == MG_MTL_TR && dy <= ofs - alpha*dx))
{
side = -1;
case MG_MTL_BR:
a = seg->box.zw;
b = seg->box.xy;
break;
case MG_MTL_TR:
a = seg->box.xw;
b = seg->box.zy;
break;
case MG_MTL_BL:
a = seg->box.zy;
b = seg->box.xw;
break;
}
else if( (seg->config == MG_MTL_TL && dy < alpha*dx)
||(seg->config == MG_MTL_BL && dy > ofs - alpha*dx))
c = seg->hullVertex;
if(ccw(a, b, p) < 0)
{
side = 1;
// other side of the diagonal
side = (seg->config == MG_MTL_BR || seg->config == MG_MTL_TR) ? -1 : 1;
}
else if(ccw(b, c, p) < 0 || ccw(c, a, p) < 0)
{
// same side of the diagonal, but outside curve hull
side = (seg->config == MG_MTL_BL || seg->config == MG_MTL_TL) ? -1 : 1;
}
else
{
// inside curve hull
switch(seg->kind)
{
case MG_MTL_LINE:
@ -323,55 +343,9 @@ int mtl_side_of_segment(float2 p, const device mg_mtl_segment* seg, mtl_log_cont
case MG_MTL_CUBIC:
{
/*
float2 a, b, c;
switch(seg->config)
{
case MG_MTL_TL:
a = seg->box.xy;
b = seg->box.zw;
break;
case MG_MTL_BR:
a = seg->box.zw;
b = seg->box.xy;
break;
case MG_MTL_TR:
a = seg->box.xw;
b = seg->box.zy;
break;
case MG_MTL_BL:
a = seg->box.zy;
b = seg->box.xw;
break;
}
c = seg->hullVertex;
if(ccw(b, c, p) > 0 && ccw(c, a, p) > 0)
{
float3 ph = {p.x, p.y, 1};
float3 klm = seg->implicitMatrix * ph;
side = (seg->sign*(klm.x*klm.x*klm.x - klm.y*klm.z) < 0)? -1 : 1;
}
else
{
side = (seg->config == MG_MTL_BL || seg->config == MG_MTL_TL) ? -1 : 1;
}
*/
float3 ph = {p.x, p.y, 1};
float3 hullCoords = seg->hullMatrix * ph;
if(all(hullCoords > 0))
{
float3 klm = seg->implicitMatrix * ph;
side = (seg->sign*(klm.x*klm.x*klm.x - klm.y*klm.z) < 0)? -1 : 1;
}
else
{
side = (seg->config == MG_MTL_BL || seg->config == MG_MTL_TL) ? -1 : 1;
}
float3 klm = seg->implicitMatrix * ph;
side = (seg->sign*(klm.x*klm.x*klm.x - klm.y*klm.z) < 0)? -1 : 1;
} break;
}
}
@ -584,6 +558,7 @@ device mg_mtl_segment* mtl_segment_push(thread mtl_segment_setup_context* contex
void mtl_line_setup(thread mtl_segment_setup_context* context, float2 p[2])
{
device mg_mtl_segment* seg = mtl_segment_push(context, p, MG_MTL_LINE);
seg->hullVertex = p[0];
mtl_segment_bin_to_tiles(context, seg);
}
@ -669,6 +644,8 @@ void mtl_quadratic_emit(thread mtl_segment_setup_context* context,
{b, e, 0.},
{c, f, g});
seg->hullVertex = p[1];
mtl_segment_bin_to_tiles(context, seg);
}
@ -1483,10 +1460,18 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
const device mg_mtl_path* pathBuffer [[buffer(2)]],
const device mg_mtl_segment* segmentBuffer [[buffer(3)]],
constant int* tileSize [[buffer(4)]],
constant int* sampleCountBuffer [[buffer(5)]],
device char* logBuffer [[buffer(6)]],
device atomic_int* logOffsetBuffer [[buffer(7)]],
texture2d<float, access::write> outTexture [[texture(0)]],
uint2 threadCoord [[thread_position_in_grid]],
uint2 gridSize [[threads_per_grid]])
{
/*
mtl_log_context log = {.buffer = logBuffer,
.offset = logOffsetBuffer,
.enabled = true};
*/
float2 pixelCoord = float2(threadCoord);
int2 tileCoord = int2(threadCoord) / tileSize[0];
int nTilesX = (int(gridSize.x) + tileSize[0] - 1)/tileSize[0];
@ -1495,18 +1480,30 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
int pathIndex = 0;
int opIndex = screenTilesBuffer[tileIndex];
const int MG_MTL_SAMPLE_COUNT = 8;
const float2 sampleCoords[MG_MTL_SAMPLE_COUNT] = {pixelCoord + float2(1, 3)/16,
pixelCoord + float2(-1, -3)/16,
pixelCoord + float2(5, -1)/16,
pixelCoord + float2(-3, 5)/16,
pixelCoord + float2(-5, -5)/16,
pixelCoord + float2(-7, 1)/16,
pixelCoord + float2(3, -7)/16,
pixelCoord + float2(7, 7)/16};
const int MG_MTL_MAX_SAMPLE_COUNT = 8;
float2 sampleCoords[MG_MTL_MAX_SAMPLE_COUNT];
int sampleCount = sampleCountBuffer[0];
float4 color[MG_MTL_SAMPLE_COUNT] = {0};
int winding[MG_MTL_SAMPLE_COUNT] = {0};
if(sampleCount == 8)
{
sampleCount = 8;
sampleCoords[0] = pixelCoord + float2(1, 3)/16;
sampleCoords[1] = pixelCoord + float2(-1, -3)/16;
sampleCoords[2] = pixelCoord + float2(5, -1)/16;
sampleCoords[3] = pixelCoord + float2(-3, 5)/16;
sampleCoords[4] = pixelCoord + float2(-5, -5)/16;
sampleCoords[5] = pixelCoord + float2(-7, 1)/16;
sampleCoords[6] = pixelCoord + float2(3, -7)/16;
sampleCoords[7] = pixelCoord + float2(7, 7)/16;
}
else
{
sampleCount = 1;
sampleCoords[0] = pixelCoord;
}
float4 color[MG_MTL_MAX_SAMPLE_COUNT] = {0};
int winding[MG_MTL_MAX_SAMPLE_COUNT] = {0};
while(opIndex != -1)
{
@ -1517,7 +1514,7 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
float4 pathColor = pathBuffer[pathIndex].color;
pathColor.rgb *= pathColor.a;
for(int sampleIndex=0; sampleIndex<MG_MTL_SAMPLE_COUNT; sampleIndex++)
for(int sampleIndex=0; sampleIndex<sampleCount; sampleIndex++)
{
bool filled = (pathBuffer[pathIndex].cmd == MG_MTL_FILL && (winding[sampleIndex] & 1))
||(pathBuffer[pathIndex].cmd == MG_MTL_STROKE && (winding[sampleIndex] != 0));
@ -1533,7 +1530,7 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
{
const device mg_mtl_segment* seg = &segmentBuffer[op->index];
for(int sampleIndex=0; sampleIndex<MG_MTL_SAMPLE_COUNT; sampleIndex++)
for(int sampleIndex=0; sampleIndex<sampleCount; sampleIndex++)
{
float2 sampleCoord = sampleCoords[sampleIndex];
@ -1566,7 +1563,7 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
float4 pathColor = pathBuffer[pathIndex].color;
pathColor.rgb *= pathColor.a;
for(int sampleIndex=0; sampleIndex<MG_MTL_SAMPLE_COUNT; sampleIndex++)
for(int sampleIndex=0; sampleIndex<sampleCount; sampleIndex++)
{
bool filled = (pathBuffer[pathIndex].cmd == MG_MTL_FILL && (winding[sampleIndex] & 1))
||(pathBuffer[pathIndex].cmd == MG_MTL_STROKE && (winding[sampleIndex] != 0));
@ -1576,16 +1573,16 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
}
pixelColor += color[sampleIndex];
}
pixelColor /= MG_MTL_SAMPLE_COUNT;
pixelColor /= sampleCount;
/*
if( (pixelCoord.x % tileSize[0] == 0)
||(pixelCoord.y % tileSize[0] == 0))
if( (int(pixelCoord.x) % tileSize[0] == 0)
||(int(pixelCoord.y) % tileSize[0] == 0))
{
outTexture.write(float4(0, 0, 0, 1), uint2(pixelCoord));
return;
}
*/
//*/
outTexture.write(pixelColor, uint2(pixelCoord));
}