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Onek8
2025-01-29 10:55:49 +01:00
commit 98fba39c36
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73
Kinc/Backends/Graphics5/Metal/Sources/kinc/backend/graphics5/indexbuffer.m.h Normal file
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#include <kinc/graphics5/graphics.h>
#include <kinc/graphics5/indexbuffer.h>
#import <Metal/Metal.h>
id getMetalDevice(void);
void kinc_g5_index_buffer_init(kinc_g5_index_buffer_t *buffer, int indexCount, kinc_g5_index_buffer_format_t format, bool gpuMemory) {
buffer->impl.count = indexCount;
buffer->impl.gpu_memory = gpuMemory;
buffer->impl.format = format;
buffer->impl.last_start = 0;
buffer->impl.last_count = indexCount;
id<MTLDevice> device = getMetalDevice();
MTLResourceOptions options = MTLResourceCPUCacheModeWriteCombined;
#ifdef KINC_APPLE_SOC
options |= MTLResourceStorageModeShared;
#else
if (gpuMemory) {
options |= MTLResourceStorageModeManaged;
}
else {
options |= MTLResourceStorageModeShared;
}
#endif
buffer->impl.metal_buffer = (__bridge_retained void *)[device
newBufferWithLength:(format == KINC_G5_INDEX_BUFFER_FORMAT_16BIT ? sizeof(uint16_t) * indexCount : sizeof(uint32_t) * indexCount)
options:options];
}
void kinc_g5_index_buffer_destroy(kinc_g5_index_buffer_t *buffer) {
id<MTLBuffer> buf = (__bridge_transfer id<MTLBuffer>)buffer->impl.metal_buffer;
buf = nil;
buffer->impl.metal_buffer = NULL;
}
static int kinc_g5_internal_index_buffer_stride(kinc_g5_index_buffer_t *buffer) {
return buffer->impl.format == KINC_G5_INDEX_BUFFER_FORMAT_16BIT ? 2 : 4;
}
void *kinc_g5_index_buffer_lock_all(kinc_g5_index_buffer_t *buffer) {
return kinc_g5_index_buffer_lock(buffer, 0, kinc_g5_index_buffer_count(buffer));
}
void *kinc_g5_index_buffer_lock(kinc_g5_index_buffer_t *buffer, int start, int count) {
buffer->impl.last_start = start;
buffer->impl.last_count = count;
id<MTLBuffer> metal_buffer = (__bridge id<MTLBuffer>)buffer->impl.metal_buffer;
uint8_t *data = (uint8_t *)[metal_buffer contents];
return &data[start * kinc_g5_internal_index_buffer_stride(buffer)];
}
void kinc_g5_index_buffer_unlock_all(kinc_g5_index_buffer_t *buffer) {
kinc_g5_index_buffer_unlock(buffer, buffer->impl.last_count);
}
void kinc_g5_index_buffer_unlock(kinc_g5_index_buffer_t *buffer, int count) {
#ifndef KINC_APPLE_SOC
if (buffer->impl.gpu_memory) {
id<MTLBuffer> metal_buffer = (__bridge id<MTLBuffer>)buffer->impl.metal_buffer;
NSRange range;
range.location = buffer->impl.last_start * kinc_g5_internal_index_buffer_stride(buffer);
range.length = count * kinc_g5_internal_index_buffer_stride(buffer);
[metal_buffer didModifyRange:range];
}
#endif
}
int kinc_g5_index_buffer_count(kinc_g5_index_buffer_t *buffer) {
return buffer->impl.count;
}