#!amber

# Copyright 2020 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# A test for a coverage-gap found by the GraphicsFuzz project.

# Short description: A fragment shader that covers specific NIR code paths

# The test passes because the shader always writes red.

# Optimized using spirv-opt with the following arguments:
# '--simplify-instructions'
# '--reduce-load-size'
# '--inline-entry-points-exhaustive'
# '--eliminate-local-single-block'
# '--redundancy-elimination'
# '--eliminate-dead-branches'
# '--eliminate-dead-inserts'
# '--redundancy-elimination'
# '--eliminate-local-single-block'
# '--eliminate-local-multi-store'
# '--simplify-instructions'
# '--eliminate-local-multi-store'
# '--eliminate-dead-branches'
# '--eliminate-dead-branches'
# '--merge-return'
# '--combine-access-chains'
# '--eliminate-local-multi-store'
# '--eliminate-local-single-block'
# '--eliminate-local-single-store'
# '--eliminate-dead-branches'
# '--merge-blocks'
# '--eliminate-dead-branches'
# '--merge-blocks'
# '--simplify-instructions'
# '--eliminate-dead-branches'
# '--merge-blocks'
# '--eliminate-local-multi-store'
# '--eliminate-dead-branches'
# '--merge-return'
# '--ccp'
# '--eliminate-local-single-store'
# '--redundancy-elimination'
# '--eliminate-local-multi-store'
# '--eliminate-dead-code-aggressive'
# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af


SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 320 es
# #define _int_0 _GLF_uniform_int_values[0]
# #define _int_1 _GLF_uniform_int_values[1]
# #define _float_1_0 _GLF_uniform_float_values[0]
#
# precision highp int;
# precision highp float;
#
# // Contents of _GLF_uniform_float_values: 1.0
# layout(set = 0, binding = 0) uniform buf0
# {
#     float _GLF_uniform_float_values[1];
# };
#
# // Contents of _GLF_uniform_int_values: [0, 1]
# layout(set = 0, binding = 1) uniform buf1
# {
#     int _GLF_uniform_int_values[2];
# };
#
# // Contents of zero: 0
# layout(set = 0, binding = 2) uniform buf2
# {
#     int zero;
# };
#
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     vec3 v = vec3(_int_1);
#     // Static out of bound access required to hit the coverage point.
#     int a = 3;
#
#     // Always false.
#     if(zero > _int_0)
#     {
#         // Out of bounds access but never executed.
#         v[a] = _float_1_0;
#     }
#
#     _GLF_color = vec4(v[_int_1], _int_0, _int_0, _int_1);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 66
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %51
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 320
               OpName %4 "main"
               OpName %9 "v"
               OpName %14 "buf1"
               OpMemberName %14 0 "_GLF_uniform_int_values"
               OpName %16 ""
               OpName %27 "buf2"
               OpMemberName %27 0 "zero"
               OpName %29 ""
               OpName %41 "buf0"
               OpMemberName %41 0 "_GLF_uniform_float_values"
               OpName %43 ""
               OpName %51 "_GLF_color"
               OpDecorate %13 ArrayStride 16
               OpMemberDecorate %14 0 Offset 0
               OpDecorate %14 Block
               OpDecorate %16 DescriptorSet 0
               OpDecorate %16 Binding 1
               OpMemberDecorate %27 0 Offset 0
               OpDecorate %27 Block
               OpDecorate %29 DescriptorSet 0
               OpDecorate %29 Binding 2
               OpDecorate %40 ArrayStride 16
               OpMemberDecorate %41 0 Offset 0
               OpDecorate %41 Block
               OpDecorate %43 DescriptorSet 0
               OpDecorate %43 Binding 0
               OpDecorate %51 Location 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypeVector %6 3
          %8 = OpTypePointer Function %7
         %10 = OpTypeInt 32 1
         %11 = OpTypeInt 32 0
         %12 = OpConstant %11 2
         %13 = OpTypeArray %10 %12
         %14 = OpTypeStruct %13
         %15 = OpTypePointer Uniform %14
         %16 = OpVariable %15 Uniform
         %17 = OpConstant %10 0
         %18 = OpConstant %10 1
         %19 = OpTypePointer Uniform %10
         %26 = OpConstant %10 3
         %27 = OpTypeStruct %10
         %28 = OpTypePointer Uniform %27
         %29 = OpVariable %28 Uniform
         %34 = OpTypeBool
         %39 = OpConstant %11 1
         %40 = OpTypeArray %6 %39
         %41 = OpTypeStruct %40
         %42 = OpTypePointer Uniform %41
         %43 = OpVariable %42 Uniform
         %44 = OpTypePointer Uniform %6
         %47 = OpTypePointer Function %6
         %49 = OpTypeVector %6 4
         %50 = OpTypePointer Output %49
         %51 = OpVariable %50 Output
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %9 = OpVariable %8 Function
         %20 = OpAccessChain %19 %16 %17 %18
         %21 = OpLoad %10 %20
         %22 = OpConvertSToF %6 %21
         %23 = OpCompositeConstruct %7 %22 %22 %22
               OpStore %9 %23
         %30 = OpAccessChain %19 %29 %17
         %31 = OpLoad %10 %30
         %32 = OpAccessChain %19 %16 %17 %17
         %33 = OpLoad %10 %32
         %35 = OpSGreaterThan %34 %31 %33
               OpSelectionMerge %37 None
               OpBranchConditional %35 %36 %37
         %36 = OpLabel
         %45 = OpAccessChain %44 %43 %17 %17
         %46 = OpLoad %6 %45
         %48 = OpAccessChain %47 %9 %26
               OpStore %48 %46
               OpBranch %37
         %37 = OpLabel
         %54 = OpAccessChain %47 %9 %21
         %55 = OpLoad %6 %54
         %58 = OpConvertSToF %6 %33
         %65 = OpCompositeConstruct %49 %55 %58 %58 %22
               OpStore %51 %65
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# zero
BUFFER variant_zero DATA_TYPE int32[] STD140 DATA
 0
END
# _GLF_uniform_int_values
BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
 0 1
END
# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 1.0
END

BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM

PIPELINE graphics variant_pipeline
  ATTACH variant_vertex_shader
  ATTACH variant_fragment_shader
  FRAMEBUFFER_SIZE 256 256
  BIND BUFFER variant_framebuffer AS color LOCATION 0
  BIND BUFFER variant_zero AS uniform DESCRIPTOR_SET 0 BINDING 2
  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
END
CLEAR_COLOR variant_pipeline 0 0 0 255

CLEAR variant_pipeline
RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256

EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255