52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
#ifdef KINC_KONG
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#include <kinc/graphics4/constantbuffer.h>
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void kinc_g4_constant_buffer_init(kinc_g4_constant_buffer *buffer, size_t size) {
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buffer->impl.size = size;
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buffer->impl.last_start = 0;
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buffer->impl.last_size = size;
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D3D11_BUFFER_DESC desc;
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desc.ByteWidth = (UINT)get_multiple_of_16(size);
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desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
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desc.Usage = D3D11_USAGE_DYNAMIC;
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desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
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desc.MiscFlags = 0;
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desc.StructureByteStride = 0;
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kinc_microsoft_affirm(dx_ctx.device->lpVtbl->CreateBuffer(dx_ctx.device, &desc, NULL, &buffer->impl.buffer));
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}
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void kinc_g4_constant_buffer_destroy(kinc_g4_constant_buffer *buffer) {
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buffer->impl.buffer->lpVtbl->Release(buffer->impl.buffer);
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}
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uint8_t *kinc_g4_constant_buffer_lock_all(kinc_g4_constant_buffer *buffer) {
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return kinc_g4_constant_buffer_lock(buffer, 0, kinc_g4_constant_buffer_size(buffer));
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}
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uint8_t *kinc_g4_constant_buffer_lock(kinc_g4_constant_buffer *buffer, size_t start, size_t size) {
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buffer->impl.last_start = start;
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buffer->impl.last_size = size;
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D3D11_MAPPED_SUBRESOURCE mapped_resource;
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memset(&mapped_resource, 0, sizeof(D3D11_MAPPED_SUBRESOURCE));
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dx_ctx.context->lpVtbl->Map(dx_ctx.context, (ID3D11Resource *)buffer->impl.buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource);
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uint8_t *data = (uint8_t *)mapped_resource.pData;
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return &data[start];
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}
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void kinc_g4_constant_buffer_unlock_all(kinc_g4_constant_buffer *buffer) {
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kinc_g4_constant_buffer_unlock(buffer, buffer->impl.last_size);
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}
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void kinc_g4_constant_buffer_unlock(kinc_g4_constant_buffer *buffer, size_t count) {
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dx_ctx.context->lpVtbl->Unmap(dx_ctx.context, (ID3D11Resource *)buffer->impl.buffer, 0);
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}
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size_t kinc_g4_constant_buffer_size(kinc_g4_constant_buffer *buffer) {
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return buffer->impl.size;
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}
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#endif
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