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[mtl renderer] re-introduced texturing

This commit is contained in:
Martin Fouilleul 2023-04-09 19:24:32 +02:00
parent ee3e55dadd
commit 551d5e084e
6 changed files with 384 additions and 164 deletions
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2
build.sh
View File

@ -1,6 +1,6 @@
#!/bin/bash
DEBUG_FLAGS="-g -O2 -DDEBUG -DLOG_COMPILE_DEBUG"
DEBUG_FLAGS="-g -DDEBUG -DLOG_COMPILE_DEBUG"
#DEBUG_FLAGS="-O3"
#--------------------------------------------------------------

2
examples/image/main.c
View File

@ -77,6 +77,7 @@ int main()
mg_set_color_rgba(0, 1, 1, 1);
mg_clear();
mg_set_color_rgba(1, 1, 1, 1);
mg_matrix_push((mg_mat2x3){0.707, -0.707, 200,
@ -91,6 +92,7 @@ int main()
mg_line_to(200, 200);
mg_line_to(0, 200);
mg_line_to(100, 100);
mg_close_path();
mg_fill();
mg_matrix_pop();

8
src/graphics.c
View File

@ -3859,7 +3859,13 @@ void mg_image_draw_region(mg_image image, mp_rect srcRegion, mp_rect dstRegion)
canvas->attributes.srcRegion = srcRegion;
canvas->attributes.color = (mg_color){1, 1, 1, 1};
mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_RECT_FILL, .rect = dstRegion});
mg_move_to(dstRegion.x, dstRegion.y);
mg_line_to(dstRegion.x+dstRegion.w, dstRegion.y);
mg_line_to(dstRegion.x+dstRegion.w, dstRegion.y+dstRegion.h);
mg_line_to(dstRegion.x, dstRegion.y+dstRegion.h);
mg_close_path();
mg_fill();
canvas->attributes.image = oldImage;
canvas->attributes.srcRegion = oldSrcRegion;

2
src/mtl_renderer.h
View File

@ -19,9 +19,9 @@ typedef enum {
typedef struct mg_mtl_path
{
mg_mtl_cmd cmd;
matrix_float3x3 uvTransform;
vector_float4 color;
vector_float4 box;
} mg_mtl_path;
typedef enum {

504
src/mtl_renderer.m
View File

@ -36,6 +36,8 @@ typedef struct mg_mtl_canvas_backend
id<MTLTexture> outTexture;
int pathBufferOffset;
int elementBufferOffset;
int bufferIndex;
dispatch_semaphore_t bufferSemaphore;
@ -57,6 +59,12 @@ typedef struct mg_mtl_canvas_backend
} mg_mtl_canvas_backend;
typedef struct mg_mtl_image_data
{
mg_image_data interface;
id<MTLTexture> texture;
} mg_mtl_image_data;
static void mg_update_path_extents(vec4* extents, vec2 p)
{
@ -89,11 +97,13 @@ void mg_mtl_print_log(int bufferIndex, id<MTLBuffer> logBuffer, id<MTLBuffer> lo
typedef struct mg_mtl_encoding_context
{
int mtlEltCount;
mg_mtl_path* pathBufferData;
mg_mtl_path_elt* elementBufferData;
int pathIndex;
int localEltIndex;
mg_primitive* primitive;
vec4 pathScreenExtents;
vec4 pathUserExtents;
} mg_mtl_encoding_context;
@ -129,9 +139,12 @@ void mg_mtl_canvas_encode_element(mg_mtl_encoding_context* context, mg_path_elt_
for(int i=0; i<count; i++)
{
mg_update_path_extents(&context->pathUserExtents, p[i]);
vec2 screenP = mg_mat2x3_mul(context->primitive->attributes.transform, p[i]);
mg_update_path_extents(&context->pathScreenExtents, screenP);
mtlElt->p[i] = (vector_float2){screenP.x, screenP.y};
mg_update_path_extents(&context->pathScreenExtents, screenP);
}
}
@ -413,8 +426,8 @@ void mg_mtl_render_stroke_element(mg_mtl_encoding_context* context,
}
void mg_mtl_stroke_cap(mg_mtl_encoding_context* context,
vec2 p0,
vec2 direction)
vec2 p0,
vec2 direction)
{
mg_attributes* attributes = &context->primitive->attributes;
@ -600,6 +613,161 @@ void mg_mtl_render_stroke(mg_mtl_encoding_context* context,
}
}
void mg_mtl_render_batch(mg_mtl_canvas_backend* backend,
mg_mtl_surface* surface,
int pathCount,
int eltCount,
mg_image_data* image,
int tileSize,
int nTilesX,
int nTilesY,
vec2 viewportSize,
f32 scale)
{
//NOTE: encode GPU commands
@autoreleasepool
{
//NOTE: clear counters
id<MTLBlitCommandEncoder> blitEncoder = [surface->commandBuffer blitCommandEncoder];
blitEncoder.label = @"clear counters";
[blitEncoder fillBuffer: backend->segmentCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder fillBuffer: backend->tileQueueCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder fillBuffer: backend->tileOpCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder endEncoding];
//NOTE: path setup pass
id<MTLComputeCommandEncoder> pathEncoder = [surface->commandBuffer computeCommandEncoder];
pathEncoder.label = @"path pass";
[pathEncoder setComputePipelineState: backend->pathPipeline];
[pathEncoder setBytes:&pathCount length:sizeof(int) atIndex:0];
[pathEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:backend->pathBufferOffset atIndex:1];
[pathEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:2];
[pathEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:3];
[pathEncoder setBuffer:backend->tileQueueCountBuffer offset:0 atIndex:4];
[pathEncoder setBytes:&tileSize length:sizeof(int) atIndex:5];
[pathEncoder setBytes:&scale length:sizeof(int) atIndex:6];
MTLSize pathGridSize = MTLSizeMake(pathCount, 1, 1);
MTLSize pathGroupSize = MTLSizeMake([backend->pathPipeline maxTotalThreadsPerThreadgroup], 1, 1);
[pathEncoder dispatchThreads: pathGridSize threadsPerThreadgroup: pathGroupSize];
[pathEncoder endEncoding];
//NOTE: segment setup pass
id<MTLComputeCommandEncoder> segmentEncoder = [surface->commandBuffer computeCommandEncoder];
segmentEncoder.label = @"segment pass";
[segmentEncoder setComputePipelineState: backend->segmentPipeline];
[segmentEncoder setBytes:&eltCount length:sizeof(int) atIndex:0];
[segmentEncoder setBuffer:backend->elementBuffer[backend->bufferIndex] offset:backend->elementBufferOffset atIndex:1];
[segmentEncoder setBuffer:backend->segmentCountBuffer offset:0 atIndex:2];
[segmentEncoder setBuffer:backend->segmentBuffer offset:0 atIndex:3];
[segmentEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:4];
[segmentEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:5];
[segmentEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:6];
[segmentEncoder setBuffer:backend->tileOpCountBuffer offset:0 atIndex:7];
[segmentEncoder setBytes:&tileSize length:sizeof(int) atIndex:8];
[segmentEncoder setBytes:&scale length:sizeof(int) atIndex:9];
[segmentEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:10];
[segmentEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:11];
MTLSize segmentGridSize = MTLSizeMake(eltCount, 1, 1);
MTLSize segmentGroupSize = MTLSizeMake([backend->segmentPipeline maxTotalThreadsPerThreadgroup], 1, 1);
[segmentEncoder dispatchThreads: segmentGridSize threadsPerThreadgroup: segmentGroupSize];
[segmentEncoder endEncoding];
//NOTE: backprop pass
id<MTLComputeCommandEncoder> backpropEncoder = [surface->commandBuffer computeCommandEncoder];
backpropEncoder.label = @"backprop pass";
[backpropEncoder setComputePipelineState: backend->backpropPipeline];
[backpropEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:0];
[backpropEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:1];
[backpropEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:2];
[backpropEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:3];
MTLSize backpropGroupSize = MTLSizeMake([backend->backpropPipeline maxTotalThreadsPerThreadgroup], 1, 1);
MTLSize backpropGridSize = MTLSizeMake(pathCount*backpropGroupSize.width, 1, 1);
[backpropEncoder dispatchThreads: backpropGridSize threadsPerThreadgroup: backpropGroupSize];
[backpropEncoder endEncoding];
//NOTE: merge pass
id<MTLComputeCommandEncoder> mergeEncoder = [surface->commandBuffer computeCommandEncoder];
mergeEncoder.label = @"merge pass";
[mergeEncoder setComputePipelineState: backend->mergePipeline];
[mergeEncoder setBytes:&pathCount length:sizeof(int) atIndex:0];
[mergeEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:backend->pathBufferOffset atIndex:1];
[mergeEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:2];
[mergeEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:3];
[mergeEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:4];
[mergeEncoder setBuffer:backend->tileOpCountBuffer offset:0 atIndex:5];
[mergeEncoder setBuffer:backend->screenTilesBuffer offset:0 atIndex:6];
[mergeEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:7];
[mergeEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:8];
MTLSize mergeGridSize = MTLSizeMake(nTilesX, nTilesY, 1);
MTLSize mergeGroupSize = MTLSizeMake(16, 16, 1);
[mergeEncoder dispatchThreads: mergeGridSize threadsPerThreadgroup: mergeGroupSize];
[mergeEncoder endEncoding];
//NOTE: raster pass
id<MTLComputeCommandEncoder> rasterEncoder = [surface->commandBuffer computeCommandEncoder];
rasterEncoder.label = @"raster pass";
[rasterEncoder setComputePipelineState: backend->rasterPipeline];
[rasterEncoder setBuffer:backend->screenTilesBuffer offset:0 atIndex:0];
[rasterEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:1];
[rasterEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:backend->pathBufferOffset 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];
int useTexture = 0;
if(image)
{
mg_mtl_image_data* mtlImage = (mg_mtl_image_data*)image;
[rasterEncoder setTexture: mtlImage->texture atIndex: 1];
useTexture = 1;
}
[rasterEncoder setBytes: &useTexture length:sizeof(int) atIndex: 8];
MTLSize rasterGridSize = MTLSizeMake(viewportSize.x, viewportSize.y, 1);
MTLSize rasterGroupSize = MTLSizeMake(16, 16, 1);
[rasterEncoder dispatchThreads: rasterGridSize threadsPerThreadgroup: rasterGroupSize];
[rasterEncoder endEncoding];
//NOTE: blit pass
MTLViewport viewport = {0, 0, viewportSize.x, viewportSize.y, 0, 1};
MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor];
renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture;
renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionLoad;
renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
id<MTLRenderCommandEncoder> renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
renderEncoder.label = @"blit pass";
[renderEncoder setViewport: viewport];
[renderEncoder setRenderPipelineState: backend->blitPipeline];
[renderEncoder setFragmentTexture: backend->outTexture atIndex: 0];
[renderEncoder drawPrimitives: MTLPrimitiveTypeTriangle
vertexStart: 0
vertexCount: 3 ];
[renderEncoder endEncoding];
}
}
void mg_mtl_canvas_render(mg_canvas_backend* interface,
mg_color clearColor,
u32 primitiveCount,
@ -616,22 +784,89 @@ void mg_mtl_canvas_render(mg_canvas_backend* interface,
mg_mtl_path_elt* elementBufferData = (mg_mtl_path_elt*)[backend->elementBuffer[backend->bufferIndex] contents];
mg_mtl_path* pathBufferData = (mg_mtl_path*)[backend->pathBuffer[backend->bufferIndex] contents];
//NOTE: fill renderer input buffers
/////////////////////////////////////////////////////////////////////////////////////
//TODO: ensure screen tiles buffer is correct size
/////////////////////////////////////////////////////////////////////////////////////
//NOTE: prepare rendering
mg_mtl_surface* surface = (mg_mtl_surface*)mg_surface_data_from_handle(backend->surface);
ASSERT(surface && surface->interface.backend == MG_BACKEND_METAL);
mg_mtl_surface_acquire_command_buffer(surface);
mg_mtl_surface_acquire_drawable(surface);
mp_rect frame = mg_surface_get_frame(backend->surface);
f32 scale = surface->mtlLayer.contentsScale;
vec2 viewportSize = {frame.w * scale, frame.h * scale};
int tileSize = MG_MTL_TILE_SIZE;
int nTilesX = (int)(frame.w * scale + tileSize - 1)/tileSize;
int nTilesY = (int)(frame.h * scale + tileSize - 1)/tileSize;
@autoreleasepool
{
//NOTE: clear log counter
id<MTLBlitCommandEncoder> blitEncoder = [surface->commandBuffer blitCommandEncoder];
blitEncoder.label = @"clear log counter";
[blitEncoder fillBuffer: backend->logOffsetBuffer[backend->bufferIndex] range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder endEncoding];
//NOTE: clear screen
MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor];
renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture;
renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clearColor.r, clearColor.g, clearColor.b, clearColor.a);
renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
id<MTLRenderCommandEncoder> renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
renderEncoder.label = @"clear pass";
[renderEncoder endEncoding];
}
backend->pathBufferOffset = 0;
backend->elementBufferOffset = 0;
//NOTE: encode and render batches
int pathCount = 0;
vec2 currentPos = {0};
mg_image currentImage = mg_image_nil();
mg_mtl_encoding_context context = {.mtlEltCount = 0,
.elementBufferData = elementBufferData};
.elementBufferData = elementBufferData,
.pathBufferData = pathBufferData};
for(int primitiveIndex = 0; primitiveIndex < primitiveCount; primitiveIndex++)
{
mg_primitive* primitive = &primitives[primitiveIndex];
if(primitiveIndex && (primitive->attributes.image.h != currentImage.h))
{
mg_image_data* imageData = mg_image_data_from_handle(currentImage);
mg_mtl_render_batch(backend,
surface,
pathCount,
context.mtlEltCount,
imageData,
tileSize,
nTilesX,
nTilesY,
viewportSize,
scale);
backend->pathBufferOffset += pathCount * sizeof(mg_mtl_path);
backend->elementBufferOffset += context.mtlEltCount * sizeof(mg_mtl_path_elt);
pathCount = 0;
context.mtlEltCount = 0;
context.elementBufferData = (mg_mtl_path_elt*)((char*)elementBufferData + backend->elementBufferOffset);
context.pathBufferData = (mg_mtl_path*)((char*)pathBufferData + backend->pathBufferOffset);
}
currentImage = primitive->attributes.image;
if(primitive->path.count)
{
context.primitive = primitive;
context.pathIndex = pathCount;
context.pathScreenExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
context.pathUserExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
if(primitive->cmd == MG_CMD_STROKE)
{
@ -675,7 +910,7 @@ void mg_mtl_canvas_render(mg_canvas_backend* interface,
}
}
//NOTE: push path
mg_mtl_path* path = &pathBufferData[pathCount];
mg_mtl_path* path = &context.pathBufferData[pathCount];
pathCount++;
path->cmd = (mg_mtl_cmd)primitive->cmd;
@ -688,164 +923,55 @@ void mg_mtl_canvas_render(mg_canvas_backend* interface,
primitive->attributes.color.g,
primitive->attributes.color.b,
primitive->attributes.color.a};
//TODO: compute uv transform
mp_rect srcRegion = primitive->attributes.srcRegion;
mp_rect destRegion = {context.pathUserExtents.x,
context.pathUserExtents.y,
context.pathUserExtents.z - context.pathUserExtents.x,
context.pathUserExtents.w - context.pathUserExtents.y};
if(!mg_image_is_nil(primitive->attributes.image))
{
vec2 texSize = mg_image_size(primitive->attributes.image);
mg_mat2x3 srcRegionToImage = {1/texSize.x, 0, srcRegion.x/texSize.x,
0, 1/texSize.y, srcRegion.y/texSize.y};
mg_mat2x3 destRegionToSrcRegion = {srcRegion.w/destRegion.w, 0, 0,
0, srcRegion.h/destRegion.h, 0};
mg_mat2x3 userToDestRegion = {1, 0, -destRegion.x,
0, 1, -destRegion.y};
mg_mat2x3 screenToUser = mg_mat2x3_inv(primitive->attributes.transform);
mg_mat2x3 uvTransform = srcRegionToImage;
uvTransform = mg_mat2x3_mul_m(uvTransform, destRegionToSrcRegion);
uvTransform = mg_mat2x3_mul_m(uvTransform, userToDestRegion);
uvTransform = mg_mat2x3_mul_m(uvTransform, screenToUser);
path->uvTransform = simd_matrix(simd_make_float3(uvTransform.m[0]/scale, uvTransform.m[3]/scale, 0),
simd_make_float3(uvTransform.m[1]/scale, uvTransform.m[4]/scale, 0),
simd_make_float3(uvTransform.m[2], uvTransform.m[5], 1));
}
}
}
mg_mtl_surface* surface = (mg_mtl_surface*)mg_surface_data_from_handle(backend->surface);
ASSERT(surface && surface->interface.backend == MG_BACKEND_METAL);
mg_image_data* imageData = mg_image_data_from_handle(currentImage);
mg_mtl_render_batch(backend,
surface,
pathCount,
context.mtlEltCount,
imageData,
tileSize,
nTilesX,
nTilesY,
viewportSize,
scale);
mp_rect frame = mg_surface_get_frame(backend->surface);
f32 scale = surface->mtlLayer.contentsScale;
vec2 viewportSize = {frame.w * scale, frame.h * scale};
int tileSize = MG_MTL_TILE_SIZE;
int nTilesX = (int)(frame.w * scale + tileSize - 1)/tileSize;
int nTilesY = (int)(frame.h * scale + tileSize - 1)/tileSize;
/////////////////////////////////////////////////////////////////////////////////////
//TODO: ensure screen tiles buffer is correct size
/////////////////////////////////////////////////////////////////////////////////////
//NOTE: encode GPU commands
@autoreleasepool
{
mg_mtl_surface_acquire_command_buffer(surface);
//NOTE: clear counters
id<MTLBlitCommandEncoder> blitEncoder = [surface->commandBuffer blitCommandEncoder];
blitEncoder.label = @"clear counters";
[blitEncoder fillBuffer: backend->segmentCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder fillBuffer: backend->tileQueueCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder fillBuffer: backend->tileOpCountBuffer range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder fillBuffer: backend->logOffsetBuffer[backend->bufferIndex] range: NSMakeRange(0, sizeof(int)) value: 0];
[blitEncoder endEncoding];
//NOTE: path setup pass
id<MTLComputeCommandEncoder> pathEncoder = [surface->commandBuffer computeCommandEncoder];
pathEncoder.label = @"path pass";
[pathEncoder setComputePipelineState: backend->pathPipeline];
[pathEncoder setBytes:&pathCount length:sizeof(int) atIndex:0];
[pathEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:0 atIndex:1];
[pathEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:2];
[pathEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:3];
[pathEncoder setBuffer:backend->tileQueueCountBuffer offset:0 atIndex:4];
[pathEncoder setBytes:&tileSize length:sizeof(int) atIndex:5];
[pathEncoder setBytes:&scale length:sizeof(int) atIndex:6];
MTLSize pathGridSize = MTLSizeMake(pathCount, 1, 1);
MTLSize pathGroupSize = MTLSizeMake([backend->pathPipeline maxTotalThreadsPerThreadgroup], 1, 1);
[pathEncoder dispatchThreads: pathGridSize threadsPerThreadgroup: pathGroupSize];
[pathEncoder endEncoding];
//NOTE: segment setup pass
id<MTLComputeCommandEncoder> segmentEncoder = [surface->commandBuffer computeCommandEncoder];
segmentEncoder.label = @"segment pass";
[segmentEncoder setComputePipelineState: backend->segmentPipeline];
[segmentEncoder setBytes:&eltCount length:sizeof(int) atIndex:0];
[segmentEncoder setBuffer:backend->elementBuffer[backend->bufferIndex] offset:0 atIndex:1];
[segmentEncoder setBuffer:backend->segmentCountBuffer offset:0 atIndex:2];
[segmentEncoder setBuffer:backend->segmentBuffer offset:0 atIndex:3];
[segmentEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:4];
[segmentEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:5];
[segmentEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:6];
[segmentEncoder setBuffer:backend->tileOpCountBuffer offset:0 atIndex:7];
[segmentEncoder setBytes:&tileSize length:sizeof(int) atIndex:8];
[segmentEncoder setBytes:&scale length:sizeof(int) atIndex:9];
[segmentEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:10];
[segmentEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:11];
MTLSize segmentGridSize = MTLSizeMake(context.mtlEltCount, 1, 1);
MTLSize segmentGroupSize = MTLSizeMake([backend->segmentPipeline maxTotalThreadsPerThreadgroup], 1, 1);
[segmentEncoder dispatchThreads: segmentGridSize threadsPerThreadgroup: segmentGroupSize];
[segmentEncoder endEncoding];
//NOTE: backprop pass
id<MTLComputeCommandEncoder> backpropEncoder = [surface->commandBuffer computeCommandEncoder];
backpropEncoder.label = @"backprop pass";
[backpropEncoder setComputePipelineState: backend->backpropPipeline];
[backpropEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:0];
[backpropEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:1];
[backpropEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:2];
[backpropEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:3];
MTLSize backpropGroupSize = MTLSizeMake([backend->backpropPipeline maxTotalThreadsPerThreadgroup], 1, 1);
MTLSize backpropGridSize = MTLSizeMake(pathCount*backpropGroupSize.width, 1, 1);
[backpropEncoder dispatchThreads: backpropGridSize threadsPerThreadgroup: backpropGroupSize];
[backpropEncoder endEncoding];
//NOTE: merge pass
id<MTLComputeCommandEncoder> mergeEncoder = [surface->commandBuffer computeCommandEncoder];
mergeEncoder.label = @"merge pass";
[mergeEncoder setComputePipelineState: backend->mergePipeline];
[mergeEncoder setBytes:&pathCount length:sizeof(int) atIndex:0];
[mergeEncoder setBuffer:backend->pathBuffer[backend->bufferIndex] offset:0 atIndex:1];
[mergeEncoder setBuffer:backend->pathQueueBuffer offset:0 atIndex:2];
[mergeEncoder setBuffer:backend->tileQueueBuffer offset:0 atIndex:3];
[mergeEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:4];
[mergeEncoder setBuffer:backend->tileOpCountBuffer offset:0 atIndex:5];
[mergeEncoder setBuffer:backend->screenTilesBuffer offset:0 atIndex:6];
[mergeEncoder setBuffer:backend->logBuffer[backend->bufferIndex] offset:0 atIndex:7];
[mergeEncoder setBuffer:backend->logOffsetBuffer[backend->bufferIndex] offset:0 atIndex:8];
MTLSize mergeGridSize = MTLSizeMake(nTilesX, nTilesY, 1);
MTLSize mergeGroupSize = MTLSizeMake(16, 16, 1);
[mergeEncoder dispatchThreads: mergeGridSize threadsPerThreadgroup: mergeGroupSize];
[mergeEncoder endEncoding];
//NOTE: raster pass
id<MTLComputeCommandEncoder> rasterEncoder = [surface->commandBuffer computeCommandEncoder];
rasterEncoder.label = @"raster pass";
[rasterEncoder setComputePipelineState: backend->rasterPipeline];
[rasterEncoder setBuffer:backend->screenTilesBuffer offset:0 atIndex:0];
[rasterEncoder setBuffer:backend->tileOpBuffer offset:0 atIndex:1];
[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];
MTLSize rasterGridSize = MTLSizeMake(viewportSize.x, viewportSize.y, 1);
MTLSize rasterGroupSize = MTLSizeMake(16, 16, 1);
[rasterEncoder dispatchThreads: rasterGridSize threadsPerThreadgroup: rasterGroupSize];
[rasterEncoder endEncoding];
//NOTE: blit pass
mg_mtl_surface_acquire_drawable(surface);
if(surface->drawable != nil)
{
MTLViewport viewport = {0, 0, viewportSize.x, viewportSize.y, 0, 1};
//TODO: clear here?
MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor];
renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture;
renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clearColor.r, clearColor.g, clearColor.b, clearColor.a);
renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
id<MTLRenderCommandEncoder> renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
renderEncoder.label = @"blit pass";
[renderEncoder setViewport: viewport];
[renderEncoder setRenderPipelineState: backend->blitPipeline];
[renderEncoder setFragmentTexture: backend->outTexture atIndex: 0];
[renderEncoder drawPrimitives: MTLPrimitiveTypeTriangle
vertexStart: 0
vertexCount: 3 ];
[renderEncoder endEncoding];
}
//NOTE: finalize
[surface->commandBuffer addCompletedHandler:^(id<MTLCommandBuffer> commandBuffer)
{
@ -887,6 +1013,64 @@ void mg_mtl_canvas_destroy(mg_canvas_backend* interface)
free(backend);
}
mg_image_data* mg_mtl_canvas_image_create(mg_canvas_backend* interface, vec2 size)
{
mg_mtl_image_data* image = 0;
mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface;
mg_mtl_surface* surface = (mg_mtl_surface*)mg_surface_data_from_handle(backend->surface);
if(surface && surface->interface.backend == MG_BACKEND_METAL)
{
@autoreleasepool{
image = malloc_type(mg_mtl_image_data);
if(image)
{
MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init];
texDesc.textureType = MTLTextureType2D;
texDesc.storageMode = MTLStorageModeManaged;
texDesc.usage = MTLTextureUsageShaderRead;
texDesc.pixelFormat = MTLPixelFormatRGBA8Unorm;
texDesc.width = size.x;
texDesc.height = size.y;
image->texture = [surface->device newTextureWithDescriptor:texDesc];
if(image->texture != nil)
{
[image->texture retain];
image->interface.size = size;
}
else
{
free(image);
image = 0;
}
}
}
}
return((mg_image_data*)image);
}
void mg_mtl_canvas_image_destroy(mg_canvas_backend* backendInterface, mg_image_data* imageInterface)
{
mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface;
@autoreleasepool
{
[image->texture release];
free(image);
}
}
void mg_mtl_canvas_image_upload_region(mg_canvas_backend* backendInterface, mg_image_data* imageInterface, mp_rect region, u8* pixels)
{@autoreleasepool{
mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface;
MTLRegion mtlRegion = MTLRegionMake2D(region.x, region.y, region.w, region.h);
[image->texture replaceRegion:mtlRegion
mipmapLevel:0
withBytes:(void*)pixels
bytesPerRow: 4 * region.w];
}}
const u32 MG_MTL_PATH_BUFFER_SIZE = (4<<20)*sizeof(mg_mtl_path),
MG_MTL_ELEMENT_BUFFER_SIZE = (4<<20)*sizeof(mg_mtl_path_elt),
MG_MTL_SEGMENT_BUFFER_SIZE = (4<<20)*sizeof(mg_mtl_segment),
@ -912,6 +1096,9 @@ mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface)
//NOTE(martin): setup interface functions
backend->interface.destroy = mg_mtl_canvas_destroy;
backend->interface.render = mg_mtl_canvas_render;
backend->interface.imageCreate = mg_mtl_canvas_image_create;
backend->interface.imageDestroy = mg_mtl_canvas_image_destroy;
backend->interface.imageUploadRegion = mg_mtl_canvas_image_upload_region;
@autoreleasepool{
//NOTE: load metal library
@ -951,7 +1138,6 @@ mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface)
backend->rasterPipeline = [metalSurface->device newComputePipelineStateWithFunction: rasterFunction
error:&error];
MTLRenderPipelineDescriptor *pipelineStateDescriptor = [[MTLRenderPipelineDescriptor alloc] init];
pipelineStateDescriptor.label = @"blit pipeline";
pipelineStateDescriptor.vertexFunction = vertexFunction;

30
src/mtl_renderer.metal
View File

@ -1447,7 +1447,9 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
constant int* sampleCountBuffer [[buffer(5)]],
device char* logBuffer [[buffer(6)]],
device atomic_int* logOffsetBuffer [[buffer(7)]],
constant int* useTexture [[buffer(8)]],
texture2d<float, access::write> outTexture [[texture(0)]],
texture2d<float> srcTexture [[texture(1)]],
uint2 threadCoord [[thread_position_in_grid]],
uint2 gridSize [[threads_per_grid]])
{
@ -1505,7 +1507,19 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
||(pathBuffer[pathIndex].cmd == MG_MTL_STROKE && (winding[sampleIndex] != 0));
if(filled)
{
color[sampleIndex] = color[sampleIndex]*(1-pathColor.a) + pathColor;
float4 nextColor = pathColor;
if(useTexture[0])
{
float3 sampleCoord = float3(sampleCoords[sampleIndex].xy, 1);
float2 uv = (pathBuffer[pathIndex].uvTransform * sampleCoord).xy;
constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear);
float4 texColor = srcTexture.sample(smp, uv);
texColor.rgb *= texColor.a;
nextColor *= texColor;
}
color[sampleIndex] = color[sampleIndex]*(1-nextColor.a) + nextColor;
}
winding[sampleIndex] = op->windingOffset;
}
@ -1554,7 +1568,19 @@ kernel void mtl_raster(const device int* screenTilesBuffer [[buffer(0)]],
||(pathBuffer[pathIndex].cmd == MG_MTL_STROKE && (winding[sampleIndex] != 0));
if(filled)
{
color[sampleIndex] = color[sampleIndex]*(1-pathColor.a) + pathColor;
float4 nextColor = pathColor;
if(useTexture[0])
{
float3 sampleCoord = float3(sampleCoords[sampleIndex].xy, 1);
float2 uv = (pathBuffer[pathIndex].uvTransform * sampleCoord).xy;
constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear);
float4 texColor = srcTexture.sample(smp, uv);
texColor.rgb *= texColor.a;
nextColor *= texColor;
}
color[sampleIndex] = color[sampleIndex]*(1-nextColor.a) + nextColor;
}
pixelColor += color[sampleIndex];
}