metal: use EXT_vulkan_glsl_relaxed

src/modules/graphics/Shader.cpp

@@ -88,13 +88,7 @@ static const char global_uniforms[] = R"(
 // According to the GLSL ES 1.0 spec, uniform precision must match between stages,
 // but we can't guarantee that highp is always supported in fragment shaders...
 // We *really* don't want to use mediump for these in vertex shaders though.
-#if __VERSION__ >= 300 && defined(LOVE_USE_UNIFORM_BUFFERS)
-layout (std140) uniform love_UniformsPerDrawBuffer {
-	highp vec4 love_UniformsPerDraw[13];
-};
-#else
 uniform LOVE_HIGHP_OR_MEDIUMP vec4 love_UniformsPerDraw[13];
-#endif
 
 // These are initialized in love_initializeBuiltinUniforms below. GLSL ES can't
 // do it as an initializer.
@@ -536,8 +530,6 @@ std::string Shader::createShaderStageCode(Graphics *gfx, ShaderStage::StageType
 		ss << "#define LOVE_GAMMA_CORRECT 1\n";
 	if (info.usesMRT)
 		ss << "#define LOVE_MULTI_RENDER_TARGETS 1\n";
-	if (gfx->getRenderer() == Graphics::RENDERER_METAL)
-		ss << "#define LOVE_USE_UNIFORM_BUFFERS 1\n"; // FIXME: this is temporary
 	ss << glsl::global_syntax;
 	ss << stageinfo.header;
 	ss << glsl::global_uniforms;

src/modules/graphics/metal/Shader.mm

@@ -250,7 +250,7 @@ Shader::Shader(id<MTLDevice> device, love::graphics::ShaderStage *vertex, love::
 					continue;
 				}
 
-				if (resource.name == "love_UniformsPerDrawBuffer")
+				if (resource.name == "gl_DefaultUniformBlock")
 				{
 					msl.set_decoration(resource.id, spv::DecorationBinding, 0);
 					const SPIRType &type = msl.get_type(resource.base_type_id);

src/modules/graphics/metal/ShaderStage.mm

@@ -154,11 +154,12 @@ ShaderStage::ShaderStage(love::graphics::Graphics *gfx, StageType stage, const s
 
 	// We can't reuse the validation glslang shader object in the base class,
 	// because we need these options set (and the language set to >= 300).
-	glslangShader->setEnvInput(EShSourceGlsl, glslangStage, EShClientNone, 0);
-	glslangShader->setEnvClient(EShClientOpenGL, EShTargetOpenGL_450);
-	glslangShader->setEnvTarget(EShTargetSpv, EShTargetSpv_1_0);
+	glslangShader->setEnvInput(EShSourceGlsl, glslangStage, EShClientVulkan, 450);
+	glslangShader->setEnvClient(EShClientVulkan, EShTargetVulkan_1_2);
+	glslangShader->setEnvTarget(EShTargetSpv, EShTargetSpv_1_5);
 	glslangShader->setAutoMapLocations(true);
 	glslangShader->setAutoMapBindings(true);
+	glslangShader->setEnvInputVulkanRulesRelaxed();
 
 	const char *csrc = source.c_str();
 	int srclen = (int) source.length();