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gpu: Rework driver name queries, add GetGPUShaderFormats

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This commit is contained in:
Ethan Lee 2024-09-13 11:16:43 -04:00
parent 6d92de5d3a
commit 96e147b2b9
12 changed files with 129 additions and 67 deletions
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70
include/SDL3/SDL_gpu.h
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@ -932,23 +932,6 @@ typedef enum SDL_GPUSwapchainComposition
SDL_GPU_SWAPCHAINCOMPOSITION_HDR10_ST2048
} SDL_GPUSwapchainComposition;
/**
* Specifies a backend API supported by SDL_GPU.
*
* Only one of these will be in use at a time.
*
* \since This enum is available since SDL 3.0.0
*/
typedef enum SDL_GPUDriver
{
SDL_GPU_DRIVER_INVALID,
SDL_GPU_DRIVER_PRIVATE, /* NDA'd platforms */
SDL_GPU_DRIVER_VULKAN,
SDL_GPU_DRIVER_D3D11,
SDL_GPU_DRIVER_D3D12,
SDL_GPU_DRIVER_METAL
} SDL_GPUDriver;
/* Structures */
/**
@ -1704,7 +1687,8 @@ typedef struct SDL_GPUStorageTextureWriteOnlyBinding
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetGPUDriver
* \sa SDL_GetGPUShaderFormats
* \sa SDL_GetGPUDeviceDriver
* \sa SDL_DestroyGPUDevice
*/
extern SDL_DECLSPEC SDL_GPUDevice *SDLCALL SDL_CreateGPUDevice(
@ -1749,7 +1733,8 @@ extern SDL_DECLSPEC SDL_GPUDevice *SDLCALL SDL_CreateGPUDevice(
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetGPUDriver
* \sa SDL_GetGPUShaderFormats
* \sa SDL_GetGPUDeviceDriver
* \sa SDL_DestroyGPUDevice
*/
extern SDL_DECLSPEC SDL_GPUDevice *SDLCALL SDL_CreateGPUDeviceWithProperties(
@ -1778,14 +1763,55 @@ extern SDL_DECLSPEC SDL_GPUDevice *SDLCALL SDL_CreateGPUDeviceWithProperties(
extern SDL_DECLSPEC void SDLCALL SDL_DestroyGPUDevice(SDL_GPUDevice *device);
/**
* Returns the backend used to create this GPU context.
* Get the number of GPU drivers compiled into SDL.
*
* \returns the number of built in GPU drivers.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetGPUDriver
*/
extern SDL_DECLSPEC int SDLCALL SDL_GetNumGPUDrivers(void);
/**
* Get the name of a built in GPU driver.
*
* The GPU drivers are presented in the order in which they are normally
* checked during initialization.
*
* The names of drivers are all simple, low-ASCII identifiers, like "vulkan",
* "metal" or "direct3d12". These never have Unicode characters, and are not
* meant to be proper names.
*
* \param index the index of a GPU driver.
* \returns the name of the GPU driver with the given **index**.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetNumGPUDrivers
*/
extern SDL_DECLSPEC const char * SDLCALL SDL_GetGPUDriver(int index);
/**
* Returns the name of the backend used to create this GPU context.
*
* \param device a GPU context to query.
* \returns an SDL_GPUDriver value, or SDL_GPU_DRIVER_INVALID on error.
* \returns the name of the device's driver, or NULL on error.
*
* \since This function is available since SDL 3.0.0.
*/
extern SDL_DECLSPEC SDL_GPUDriver SDLCALL SDL_GetGPUDriver(SDL_GPUDevice *device);
extern SDL_DECLSPEC const char * SDLCALL SDL_GetGPUDeviceDriver(SDL_GPUDevice *device);
/**
* Returns the supported shader formats for this GPU context.
*
* \param device a GPU context to query.
* \returns a bitflag indicating which shader formats the driver is
* able to consume.
*
* \since This function is available since SDL 3.0.0.
*/
extern SDL_DECLSPEC SDL_GPUShaderFormat SDLCALL SDL_GetGPUShaderFormats(SDL_GPUDevice *device);
/* State Creation */

3
src/dynapi/SDL_dynapi.sym
View File

@ -276,7 +276,9 @@ SDL3_0.0.0 {
SDL_GetFullscreenDisplayModes;
SDL_GetGDKDefaultUser;
SDL_GetGDKTaskQueue;
SDL_GetGPUDeviceDriver;
SDL_GetGPUDriver;
SDL_GetGPUShaderFormats;
SDL_GetGPUSwapchainTextureFormat;
SDL_GetGamepadAppleSFSymbolsNameForAxis;
SDL_GetGamepadAppleSFSymbolsNameForButton;
@ -392,6 +394,7 @@ SDL3_0.0.0 {
SDL_GetNumAllocations;
SDL_GetNumAudioDrivers;
SDL_GetNumCameraDrivers;
SDL_GetNumGPUDrivers;
SDL_GetNumGamepadTouchpadFingers;
SDL_GetNumGamepadTouchpads;
SDL_GetNumHapticAxes;

3
src/dynapi/SDL_dynapi_overrides.h
View File

@ -301,7 +301,9 @@
#define SDL_GetFullscreenDisplayModes SDL_GetFullscreenDisplayModes_REAL
#define SDL_GetGDKDefaultUser SDL_GetGDKDefaultUser_REAL
#define SDL_GetGDKTaskQueue SDL_GetGDKTaskQueue_REAL
#define SDL_GetGPUDeviceDriver SDL_GetGPUDeviceDriver_REAL
#define SDL_GetGPUDriver SDL_GetGPUDriver_REAL
#define SDL_GetGPUShaderFormats SDL_GetGPUShaderFormats_REAL
#define SDL_GetGPUSwapchainTextureFormat SDL_GetGPUSwapchainTextureFormat_REAL
#define SDL_GetGamepadAppleSFSymbolsNameForAxis SDL_GetGamepadAppleSFSymbolsNameForAxis_REAL
#define SDL_GetGamepadAppleSFSymbolsNameForButton SDL_GetGamepadAppleSFSymbolsNameForButton_REAL
@ -417,6 +419,7 @@
#define SDL_GetNumAllocations SDL_GetNumAllocations_REAL
#define SDL_GetNumAudioDrivers SDL_GetNumAudioDrivers_REAL
#define SDL_GetNumCameraDrivers SDL_GetNumCameraDrivers_REAL
#define SDL_GetNumGPUDrivers SDL_GetNumGPUDrivers_REAL
#define SDL_GetNumGamepadTouchpadFingers SDL_GetNumGamepadTouchpadFingers_REAL
#define SDL_GetNumGamepadTouchpads SDL_GetNumGamepadTouchpads_REAL
#define SDL_GetNumHapticAxes SDL_GetNumHapticAxes_REAL

5
src/dynapi/SDL_dynapi_procs.h
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@ -321,7 +321,9 @@ SDL_DYNAPI_PROC(float,SDL_GetFloatProperty,(SDL_PropertiesID a, const char *b, f
SDL_DYNAPI_PROC(SDL_DisplayMode**,SDL_GetFullscreenDisplayModes,(SDL_DisplayID a, int *b),(a,b),return)
SDL_DYNAPI_PROC(SDL_bool,SDL_GetGDKDefaultUser,(XUserHandle *a),(a),return)
SDL_DYNAPI_PROC(SDL_bool,SDL_GetGDKTaskQueue,(XTaskQueueHandle *a),(a),return)
SDL_DYNAPI_PROC(SDL_GPUDriver,SDL_GetGPUDriver,(SDL_GPUDevice *a),(a),return)
SDL_DYNAPI_PROC(const char*,SDL_GetGPUDeviceDriver,(SDL_GPUDevice *a),(a),return)
SDL_DYNAPI_PROC(const char*,SDL_GetGPUDriver,(int a),(a),return)
SDL_DYNAPI_PROC(SDL_GPUShaderFormat,SDL_GetGPUShaderFormats,(SDL_GPUDevice *a),(a),return)
SDL_DYNAPI_PROC(SDL_GPUTextureFormat,SDL_GetGPUSwapchainTextureFormat,(SDL_GPUDevice *a, SDL_Window *b),(a,b),return)
SDL_DYNAPI_PROC(const char*,SDL_GetGamepadAppleSFSymbolsNameForAxis,(SDL_Gamepad *a, SDL_GamepadAxis b),(a,b),return)
SDL_DYNAPI_PROC(const char*,SDL_GetGamepadAppleSFSymbolsNameForButton,(SDL_Gamepad *a, SDL_GamepadButton b),(a,b),return)
@ -437,6 +439,7 @@ SDL_DYNAPI_PROC(SDL_DisplayOrientation,SDL_GetNaturalDisplayOrientation,(SDL_Dis
SDL_DYNAPI_PROC(int,SDL_GetNumAllocations,(void),(),return)
SDL_DYNAPI_PROC(int,SDL_GetNumAudioDrivers,(void),(),return)
SDL_DYNAPI_PROC(int,SDL_GetNumCameraDrivers,(void),(),return)
SDL_DYNAPI_PROC(int,SDL_GetNumGPUDrivers,(void),(),return)
SDL_DYNAPI_PROC(int,SDL_GetNumGamepadTouchpadFingers,(SDL_Gamepad *a, int b),(a,b),return)
SDL_DYNAPI_PROC(int,SDL_GetNumGamepadTouchpads,(SDL_Gamepad *a),(a),return)
SDL_DYNAPI_PROC(int,SDL_GetNumHapticAxes,(SDL_Haptic *a),(a),return)

57
src/gpu/SDL_gpu.c
View File

@ -371,7 +371,7 @@ void SDL_GPU_BlitCommon(
// Driver Functions
#ifndef SDL_GPU_DISABLED
static SDL_GPUDriver SDL_GPUSelectBackend(
static const SDL_GPUBootstrap * SDL_GPUSelectBackend(
SDL_VideoDevice *_this,
const char *gpudriver,
SDL_GPUShaderFormat format_flags)
@ -384,16 +384,16 @@ static SDL_GPUDriver SDL_GPUSelectBackend(
if (SDL_strcasecmp(gpudriver, backends[i]->name) == 0) {
if (!(backends[i]->shader_formats & format_flags)) {
SDL_LogError(SDL_LOG_CATEGORY_GPU, "Required shader format for backend %s not provided!", gpudriver);
return SDL_GPU_DRIVER_INVALID;
return NULL;
}
if (backends[i]->PrepareDriver(_this)) {
return backends[i]->backendflag;
return backends[i];
}
}
}
SDL_LogError(SDL_LOG_CATEGORY_GPU, "SDL_HINT_GPU_DRIVER %s unsupported!", gpudriver);
return SDL_GPU_DRIVER_INVALID;
return NULL;
}
for (i = 0; backends[i]; i += 1) {
@ -402,12 +402,12 @@ static SDL_GPUDriver SDL_GPUSelectBackend(
continue;
}
if (backends[i]->PrepareDriver(_this)) {
return backends[i]->backendflag;
return backends[i];
}
}
SDL_LogError(SDL_LOG_CATEGORY_GPU, "No supported SDL_GPU backend found!");
return SDL_GPU_DRIVER_INVALID;
return NULL;
}
#endif // SDL_GPU_DISABLED
@ -455,10 +455,9 @@ SDL_GPUDevice *SDL_CreateGPUDeviceWithProperties(SDL_PropertiesID props)
bool debug_mode;
bool preferLowPower;
int i;
const char *gpudriver;
SDL_GPUDevice *result = NULL;
SDL_GPUDriver selectedBackend;
const SDL_GPUBootstrap *selectedBackend;
SDL_VideoDevice *_this = SDL_GetVideoDevice();
if (_this == NULL) {
@ -494,17 +493,12 @@ SDL_GPUDevice *SDL_CreateGPUDeviceWithProperties(SDL_PropertiesID props)
}
selectedBackend = SDL_GPUSelectBackend(_this, gpudriver, format_flags);
if (selectedBackend != SDL_GPU_DRIVER_INVALID) {
for (i = 0; backends[i]; i += 1) {
if (backends[i]->backendflag == selectedBackend) {
result = backends[i]->CreateDevice(debug_mode, preferLowPower, props);
if (result != NULL) {
result->backend = backends[i]->backendflag;
result->shader_formats = backends[i]->shader_formats;
result->debug_mode = debug_mode;
break;
}
}
if (selectedBackend != NULL) {
result = selectedBackend->CreateDevice(debug_mode, preferLowPower, props);
if (result != NULL) {
result->backend = selectedBackend->name;
result->shader_formats = selectedBackend->shader_formats;
result->debug_mode = debug_mode;
}
}
return result;
@ -521,13 +515,34 @@ void SDL_DestroyGPUDevice(SDL_GPUDevice *device)
device->DestroyDevice(device);
}
SDL_GPUDriver SDL_GetGPUDriver(SDL_GPUDevice *device)
int SDL_GetNumGPUDrivers(void)
{
CHECK_DEVICE_MAGIC(device, SDL_GPU_DRIVER_INVALID);
return SDL_arraysize(backends) - 1;
}
const char * SDL_GetGPUDriver(int index)
{
if (index < 0 || index >= SDL_GetNumGPUDrivers()) {
SDL_InvalidParamError("index");
return NULL;
}
return backends[index]->name;
}
const char * SDL_GetGPUDeviceDriver(SDL_GPUDevice *device)
{
CHECK_DEVICE_MAGIC(device, NULL);
return device->backend;
}
SDL_GPUShaderFormat SDL_GetGPUShaderFormats(SDL_GPUDevice *device)
{
CHECK_DEVICE_MAGIC(device, SDL_GPU_SHADERFORMAT_INVALID);
return device->shader_formats;
}
Uint32 SDL_GPUTextureFormatTexelBlockSize(
SDL_GPUTextureFormat format)
{

9
src/gpu/SDL_sysgpu.h
View File

@ -693,12 +693,14 @@ struct SDL_GPUDevice
// Opaque pointer for the Driver
SDL_GPURenderer *driverData;
// Store this for SDL_GetGPUDriver()
SDL_GPUDriver backend;
// Store this for SDL_GetGPUDeviceDriver()
const char *backend;
// Store this for SDL_GetGPUShaderFormats()
SDL_GPUShaderFormat shader_formats;
// Store this for SDL_gpu.c's debug layer
bool debug_mode;
SDL_GPUShaderFormat shader_formats;
};
#define ASSIGN_DRIVER_FUNC(func, name) \
@ -786,7 +788,6 @@ struct SDL_GPUDevice
typedef struct SDL_GPUBootstrap
{
const char *name;
const SDL_GPUDriver backendflag;
const SDL_GPUShaderFormat shader_formats;
bool (*PrepareDriver)(SDL_VideoDevice *_this);
SDL_GPUDevice *(*CreateDevice)(bool debug_mode, bool prefer_low_power, SDL_PropertiesID props);

1
src/gpu/d3d11/SDL_gpu_d3d11.c
View File

@ -6432,7 +6432,6 @@ tryCreateDevice:
SDL_GPUBootstrap D3D11Driver = {
"direct3d11",
SDL_GPU_DRIVER_D3D11,
SDL_GPU_SHADERFORMAT_DXBC,
D3D11_PrepareDriver,
D3D11_CreateDevice

1
src/gpu/d3d12/SDL_gpu_d3d12.c
View File

@ -8348,7 +8348,6 @@ static SDL_GPUDevice *D3D12_CreateDevice(bool debugMode, bool preferLowPower, SD
SDL_GPUBootstrap D3D12Driver = {
"direct3d12",
SDL_GPU_DRIVER_D3D12,
SDL_GPU_SHADERFORMAT_DXIL,
D3D12_PrepareDriver,
D3D12_CreateDevice

1
src/gpu/metal/SDL_gpu_metal.m
View File

@ -4120,7 +4120,6 @@ static SDL_GPUDevice *METAL_CreateDevice(bool debugMode, bool preferLowPower, SD
SDL_GPUBootstrap MetalDriver = {
"metal",
SDL_GPU_DRIVER_METAL,
SDL_GPU_SHADERFORMAT_MSL | SDL_GPU_SHADERFORMAT_METALLIB,
METAL_PrepareDriver,
METAL_CreateDevice

1
src/gpu/vulkan/SDL_gpu_vulkan.c
View File

@ -11889,7 +11889,6 @@ static SDL_GPUDevice *VULKAN_CreateDevice(bool debugMode, bool preferLowPower, S
SDL_GPUBootstrap VulkanDriver = {
"vulkan",
SDL_GPU_DRIVER_VULKAN,
SDL_GPU_SHADERFORMAT_SPIRV,
VULKAN_PrepareDriver,
VULKAN_CreateDevice

37
src/render/gpu/SDL_shaders_gpu.c
View File

@ -150,17 +150,28 @@ static const GPU_ShaderSources frag_shader_sources[NUM_FRAG_SHADERS] = {
static SDL_GPUShader *CompileShader(const GPU_ShaderSources *sources, SDL_GPUDevice *device, SDL_GPUShaderStage stage)
{
const GPU_ShaderModuleSource *sms = NULL;
SDL_GPUDriver driver = SDL_GetGPUDriver(device);
SDL_GPUShaderFormat formats = SDL_GetGPUShaderFormats(device);
switch (driver) {
// clang-format off
IF_VULKAN( case SDL_GPU_DRIVER_VULKAN: sms = &sources->spirv; break;)
IF_D3D11( case SDL_GPU_DRIVER_D3D11: sms = &sources->dxbc50; break;)
IF_D3D12( case SDL_GPU_DRIVER_D3D12: sms = &sources->dxil60; break;)
IF_METAL( case SDL_GPU_DRIVER_METAL: sms = &sources->msl; break;)
// clang-format on
default:
if (formats == SDL_GPU_SHADERFORMAT_INVALID) {
// SDL_GetGPUShaderFormats already set the error
return NULL;
#if HAVE_SPIRV_SHADERS
} else if (formats & SDL_GPU_SHADERFORMAT_SPIRV) {
sms = &sources->spirv;
#endif // HAVE_SPIRV_SHADERS
#if HAVE_DXBC50_SHADERS
} else if (formats & SDL_GPU_SHADERFORMAT_DXBC) {
sms = &sources->dxbc50;
#endif // HAVE_DXBC50_SHADERS
#if HAVE_DXIL60_SHADERS
} else if (formats & SDL_GPU_SHADERFORMAT_DXIL) {
sms = &sources->dxil60;
#endif // HAVE_DXIL60_SHADERS
#if HAVE_METAL_SHADERS
} else if (formats & SDL_GPU_SHADERFORMAT_MSL) {
sms = &sources->msl;
#endif // HAVE_METAL_SHADERS
} else {
SDL_SetError("Unsupported GPU backend");
return NULL;
}
@ -170,7 +181,11 @@ static SDL_GPUShader *CompileShader(const GPU_ShaderSources *sources, SDL_GPUDev
sci.code_size = sms->code_len;
sci.format = sms->format;
// FIXME not sure if this is correct
sci.entrypoint = driver == SDL_GPU_DRIVER_METAL ? "main0" : "main";
sci.entrypoint =
#if HAVE_METAL_SHADERS
(sms == &sources->msl) ? "main0" :
#endif // HAVE_METAL_SHADERS
"main";
sci.num_samplers = sources->num_samplers;
sci.num_uniform_buffers = sources->num_uniform_buffers;
sci.stage = stage;

8
test/testgpu_spinning_cube.c
View File

@ -423,18 +423,18 @@ load_shader(SDL_bool is_vertex)
createinfo.num_uniform_buffers = is_vertex ? 1 : 0;
createinfo.props = 0;
SDL_GPUDriver backend = SDL_GetGPUDriver(gpu_device);
if (backend == SDL_GPU_DRIVER_D3D11) {
SDL_GPUShaderFormat format = SDL_GetGPUShaderFormats(gpu_device);
if (format & SDL_GPU_SHADERFORMAT_DXBC) {
createinfo.format = SDL_GPU_SHADERFORMAT_DXBC;
createinfo.code = is_vertex ? D3D11_CubeVert : D3D11_CubeFrag;
createinfo.code_size = is_vertex ? SDL_arraysize(D3D11_CubeVert) : SDL_arraysize(D3D11_CubeFrag);
createinfo.entrypoint = is_vertex ? "VSMain" : "PSMain";
} else if (backend == SDL_GPU_DRIVER_D3D12) {
} else if (format & SDL_GPU_SHADERFORMAT_DXIL) {
createinfo.format = SDL_GPU_SHADERFORMAT_DXIL;
createinfo.code = is_vertex ? D3D12_CubeVert : D3D12_CubeFrag;
createinfo.code_size = is_vertex ? SDL_arraysize(D3D12_CubeVert) : SDL_arraysize(D3D12_CubeFrag);
createinfo.entrypoint = is_vertex ? "VSMain" : "PSMain";
} else if (backend == SDL_GPU_DRIVER_METAL) {
} else if (format & SDL_GPU_SHADERFORMAT_METALLIB) {
createinfo.format = SDL_GPU_SHADERFORMAT_METALLIB;
createinfo.code = is_vertex ? cube_vert_metallib : cube_frag_metallib;
createinfo.code_size = is_vertex ? cube_vert_metallib_len : cube_frag_metallib_len;