godot/drivers/vulkan/rendering_shader_container_vulkan.cpp

/**************************************************************************/
/*  rendering_shader_container_vulkan.cpp                                 */
/**************************************************************************/
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#include "rendering_shader_container_vulkan.h"

#if RENDERING_SHADER_CONTAINER_VULKAN_SMOLV
#include "thirdparty/misc/smolv.h"
#endif

// RenderingShaderContainerVulkan

const uint32_t RenderingShaderContainerVulkan::FORMAT_VERSION = 1;

uint32_t RenderingShaderContainerVulkan::_format() const {
	return 0x43565053;
}

uint32_t RenderingShaderContainerVulkan::_format_version() const {
	return FORMAT_VERSION;
}

bool RenderingShaderContainerVulkan::_set_code_from_spirv(const Vector<RenderingDeviceCommons::ShaderStageSPIRVData> &p_spirv) {
	PackedByteArray code_bytes;
	shaders.resize(p_spirv.size());
	for (int64_t i = 0; i < p_spirv.size(); i++) {
#if RENDERING_SHADER_CONTAINER_VULKAN_SMOLV
		// Encode into smolv.
		smolv::ByteArray smolv_bytes;
		bool smolv_encoded = smolv::Encode(p_spirv[i].spirv.ptr(), p_spirv[i].spirv.size(), smolv_bytes, smolv::kEncodeFlagStripDebugInfo);
		ERR_FAIL_COND_V_MSG(!smolv_encoded, false, "Failed to compress SPIR-V into smolv.");

		code_bytes.resize(smolv_bytes.size());
		memcpy(code_bytes.ptrw(), smolv_bytes.data(), code_bytes.size());
#else
		code_bytes.resize(p_spirv[i].spirv.size());
		memcpy(code_bytes.ptrw(), p_spirv[i].spirv.ptr(), code_bytes.size());
#endif

		RenderingShaderContainer::Shader &shader = shaders.ptrw()[i];
#if RENDERING_SHADER_CONTAINER_VULKAN_COMPRESSION
		uint32_t compressed_size = 0;
		shader.code_decompressed_size = code_bytes.size();
		shader.code_compressed_bytes.resize(code_bytes.size());

		bool compressed = compress_code(code_bytes.ptr(), code_bytes.size(), shader.code_compressed_bytes.ptrw(), &compressed_size, &shader.code_compression_flags);
		ERR_FAIL_COND_V_MSG(!compressed, false, vformat("Failed to compress native code to native for SPIR-V #%d.", i));

		shader.code_compressed_bytes.resize(compressed_size);
#else
		shader.code_decompressed_size = 0;
		shader.code_compression_flags = 0;
		shader.code_compressed_bytes = code_bytes;
#endif
		shader.shader_stage = p_spirv[i].shader_stage;
	}

	return true;
}

// RenderingShaderContainerFormatVulkan

Ref<RenderingShaderContainer> RenderingShaderContainerFormatVulkan::create_container() const {
	return memnew(RenderingShaderContainerVulkan);
}

RenderingDeviceCommons::ShaderLanguageVersion RenderingShaderContainerFormatVulkan::get_shader_language_version() const {
	return SHADER_LANGUAGE_VULKAN_VERSION_1_1;
}

RenderingDeviceCommons::ShaderSpirvVersion RenderingShaderContainerFormatVulkan::get_shader_spirv_version() const {
	return SHADER_SPIRV_VERSION_1_3;
}

RenderingShaderContainerFormatVulkan::RenderingShaderContainerFormatVulkan() {}

RenderingShaderContainerFormatVulkan::~RenderingShaderContainerFormatVulkan() {}