kc3-lang/angle/src/compiler/translator/tree_ops/DeclareAndInitBuiltinsForInstancedMultiview.h

• Show log

  Commit

• Hash : 6f80f0f0
  Author :
  Date : 2022-08-06T02:29:19
  

  Translator: Clean up the compile flag passing interface
  
  Historically, compile flags were sent to the translator as a bitmask.
  Recently, we were getting close to running out of bits.  Additionally,
  direct-to-metal work had started to introduce constants to be passed to
  the translator, which were misplaced in ShBuiltInResources and Caps.
  Recent work on Pixel Local Storage adds even more constants, aggravating
  the situation.
  
  In this change, the interface to passing compile flags is reworked.  A
  struct is passed (instead of a bitmask) that has one bit for each flag.
  This can be indefinitely extended.  Additionally, the constants needed
  by metal and PLS are also placed in this struct.  In turn, the backends
  can set these options directly, and don't have to hack them into Caps to
  further get hacked into ShBuiltInResources.
  
  Bug: angleproject:7559
  Change-Id: If93f1e1b8818ad3a0ac708ab04ab93b4b397d114
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3812562
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com>
  Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com>
  Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>
  

Download

• src/compiler/translator/tree_ops/DeclareAndInitBuiltinsForInstancedMultiview.h

• //
  // Copyright 2017 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // Regardless of the shader type, the following AST transformations are applied:
  // - Add declaration of View_ID_OVR.
  // - Replace every occurrence of gl_ViewID_OVR with ViewID_OVR, mark ViewID_OVR as internal and
  // declare it as a flat varying.
  //
  // If the shader type is a vertex shader, the following AST transformations are applied:
  // - Replace every occurrence of gl_InstanceID with InstanceID, mark InstanceID as internal and set
  // its qualifier to EvqTemporary.
  // - Add initializers of ViewID_OVR and InstanceID to the beginning of the body of main. The pass
  // should be executed before any variables get collected so that usage of gl_InstanceID is recorded.
  // - If the output is ESSL or GLSL and the selectViewInNvGLSLVertexShader option is
  // enabled, the expression
  // "if (multiviewBaseViewLayerIndex < 0) {
  //      gl_ViewportIndex = int(ViewID_OVR);
  //  } else {
  //      gl_Layer = int(ViewID_OVR) + multiviewBaseViewLayerIndex;
  //  }"
  // is added after ViewID and InstanceID are initialized. Also, MultiviewRenderPath is added as a
  // uniform.
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  #define COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "common/angleutils.h"
  
  namespace sh
  {
  
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  
  [[nodiscard]] bool DeclareAndInitBuiltinsForInstancedMultiview(
      TCompiler *compiler,
      TIntermBlock *root,
      unsigned numberOfViews,
      GLenum shaderType,
      const ShCompileOptions &compileOptions,
      ShShaderOutput shaderOutput,
      TSymbolTable *symbolTable);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  

Download