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multisampling in metal

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This commit is contained in:
Greg Wells
2025-07-09 13:27:06 -04:00
parent 07d4e13f20
commit 89ea72b341
11 changed files with 59 additions and 20 deletions
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22
projects/apis/metal/src/framebuffers/metal_framebuffer.m
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@@ -28,6 +28,13 @@ MTLStoreAction mtlGryphnStoreOperation(gnStoreOperation storeOperation) {
}
}
MTLStoreAction mtlGryphnStoreOperationResolve(gnStoreOperation storeOperation) {
switch (storeOperation) {
case GN_STORE_OPERATION_STORE: return MTLStoreActionStoreAndMultisampleResolve;
case GN_STORE_OPERATION_DONT_CARE: return MTLStoreActionDontCare;
}
}
gnReturnCode createMetalFramebuffer(gnFramebuffer framebuffer, gnOutputDevice device, gnFramebufferInfo info) {
framebuffer->framebuffer = malloc(sizeof(struct gnPlatformFramebuffer_t));
if (info.attachmentCount != info.renderPassDescriptor->info.attachmentCount) {
@@ -45,13 +52,20 @@ gnReturnCode createMetalFramebuffer(gnFramebuffer framebuffer, gnOutputDevice de
[framebuffer->framebuffer->subpasses[i] setRenderTargetWidth:info.size.x];
[framebuffer->framebuffer->subpasses[i] setRenderTargetHeight:info.size.y];
gnBool resolve = !(info.renderPassDescriptor->info.subpassInfos[i].resolveAttachments == NULL);
for (int c = 0; c < info.renderPassDescriptor->info.subpassInfos[i].colorAttachmentCount; c++) {
uint32_t attachmentIndex = info.renderPassDescriptor->info.subpassInfos[i].colorAttachments[i].index;
uint32_t attachmentIndex = info.renderPassDescriptor->info.subpassInfos[i].colorAttachments[c].index, resolveAttachemntIndex = 0;
MTLRenderPassColorAttachmentDescriptor* color = framebuffer->framebuffer->subpasses[i].colorAttachments[c];
color.texture = info.attachments[attachmentIndex]->texture->texture;
if (resolve) {
resolveAttachemntIndex = info.renderPassDescriptor->info.subpassInfos[i].resolveAttachments[c].index;
color.resolveTexture = info.attachments[resolveAttachemntIndex]->texture->texture;
color.storeAction = mtlGryphnStoreOperationResolve(info.renderPassDescriptor->info.attachmentInfos[attachmentIndex].storeOperation);
} else {
color.storeAction = mtlGryphnStoreOperation(info.renderPassDescriptor->info.attachmentInfos[attachmentIndex].storeOperation);
}
color.loadAction = mtlGryphnLoadOperation(info.renderPassDescriptor->info.attachmentInfos[attachmentIndex].loadOperation);
color.storeAction = mtlGryphnStoreOperation(info.renderPassDescriptor->info.attachmentInfos[attachmentIndex].storeOperation);
if (color.loadAction == MTLLoadActionClear)
color.clearColor = MTLClearColorMake(0.0, 0.0, 0.0, 1.0);
@@ -66,7 +80,7 @@ gnReturnCode createMetalFramebuffer(gnFramebuffer framebuffer, gnOutputDevice de
depthAttachment.clearDepth = 1.0f;
MTLRenderPassStencilAttachmentDescriptor* stencilAttachment = framebuffer->framebuffer->subpasses[attachmentIndex].stencilAttachment;
stencilAttachment.texture = info.attachments[i]->texture->texture;
stencilAttachment.texture = info.attachments[attachmentIndex]->texture->texture;
}
}