mirror of
https://github.com/Kbz-8/Pulse.git
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119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
// Copyright (C) 2024 kanel
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// This file is part of "Pulse"
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// For conditions of distribution and use, see copyright notice in LICENSE
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#include <Pulse.h>
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#include "PulseInternal.h"
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#ifdef PULSE_ENABLE_VULKAN_BACKEND
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#include "Backends/Vulkan/Vulkan.h"
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#endif
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#ifdef PULSE_ENABLE_D3D11_BACKEND
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#include "Backends/D3D11/D3D11.h"
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#endif
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// Ordered by default preference
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static const PulseCheckBackendSupportPFN backends_supports[] = {
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#ifdef PULSE_ENABLE_VULKAN_BACKEND
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VulkanCheckSupport,
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#endif
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#ifdef PULSE_ENABLE_D3D11_BACKEND
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D3D11CheckSupport,
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#endif
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PULSE_NULLPTR
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};
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static PulseErrorType last_error = PULSE_ERROR_NONE;
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void PulseSetInternalError(PulseErrorType error)
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{
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last_error = error;
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}
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static PulseBackendFlags PulseSelectBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used)
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{
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if((backend_candidates & PULSE_BACKEND_INVALID) != 0)
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{
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PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
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return PULSE_BACKEND_INVALID;
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}
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for(int i = 0; backends_supports[i] != PULSE_NULLPTR; i++)
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{
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PulseBackendFlags backend = backends_supports[i](backend_candidates, shader_formats_used);
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if(backend != PULSE_BACKEND_INVALID)
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return backend;
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}
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PulseSetInternalError(PULSE_ERROR_INITIALIZATION_FAILED);
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return PULSE_BACKEND_INVALID;
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}
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static PulseBackend PulseGetBackendFromFlag(PulseBackendBits flag)
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{
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switch(flag)
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{
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#ifdef PULSE_ENABLE_VULKAN_BACKEND
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case PULSE_BACKEND_VULKAN: return &VulkanDriver;
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#endif
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#ifdef PULSE_ENABLE_D3D11_BACKEND
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case PULSE_BACKEND_VULKAN: return &D3D11Driver;
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#endif
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default: return PULSE_NULL_HANDLE;
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}
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return PULSE_NULL_HANDLE; // To avoid warnings
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}
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PULSE_API PulseBackend PulseLoadBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used, PulseDebugLevel debug_level)
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{
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PulseBackendFlags backend_type = PulseSelectBackend(backend_candidates, shader_formats_used);
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if(backend_type == PULSE_BACKEND_INVALID) // Error code already set by PulseSelectBackend
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return PULSE_NULL_HANDLE;
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PulseBackend backend = PulseGetBackendFromFlag(backend_type);
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if(backend == PULSE_NULL_HANDLE)
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return PULSE_NULL_HANDLE;
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if(!backend->PFN_LoadBackend(debug_level))
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return PULSE_NULL_HANDLE;
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return (PulseBackend)backend;
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}
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PULSE_API void PulseUnloadBackend(PulseBackend backend)
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{
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PULSE_CHECK_HANDLE(backend);
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backend->PFN_UnloadBackend(backend);
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}
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PULSE_API bool PulseSupportsBackend(PulseBackendFlags backend_candidates, PulseShaderFormatsFlags shader_formats_used)
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{
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if((backend_candidates & PULSE_BACKEND_INVALID) != 0)
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return false;
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for(int i = 0; backends_supports[i] != PULSE_NULLPTR; i++)
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{
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PulseBackendFlags backend = backends_supports[i](backend_candidates, shader_formats_used);
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if(backend != PULSE_BACKEND_INVALID)
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return true;
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}
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return false;
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}
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PULSE_API PulseErrorType PulseGetLastErrorType()
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{
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PulseErrorType error = last_error;
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last_error = PULSE_ERROR_NONE;
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return error;
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}
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PULSE_API const char* PulseVerbaliseErrorType(PulseErrorType error)
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{
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switch(error)
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{
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case PULSE_ERROR_NONE: return "no error";
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case PULSE_ERROR_BACKENDS_CANDIDATES_SHADER_FORMAT_MISMATCH: return "no backend candidates support the required shader formats";
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case PULSE_ERROR_INITIALIZATION_FAILED: return "initialization of an object could not be completed for implementation-specific reasons";
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case PULSE_ERROR_ALLOCATION_FAILED: return "an internal allocation failed";
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default: return "invalid error type";
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};
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return PULSE_NULLPTR; // To avoid warnings, should be unreachable
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}
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