xref: /third_party/vk-gl-cts/external/vulkancts/data/vulkan/amber/graphicsfuzz/cov-mod-uint-bits-float.amber

#!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 a specific APFloat path

# The test passes because the shader always writes red.

SHADER vertex variant_vertex_shader PASSTHROUGH

# variant_fragment_shader is derived from the following GLSL:
# #version 310 es
# #define _float_1_0 _GLF_uniform_float_values[0]
# #define _float_0_0 _GLF_uniform_float_values[1]
# #define _float_0_01 _GLF_uniform_float_values[2]
#
# precision highp float;
# precision highp int;
#
# // Contents of _GLF_uniform_float_values: 1.0
# layout(set = 0, binding = 0) uniform buf0
# {
#     float _GLF_uniform_float_values[3];
# };
# layout(location = 0) out vec4 _GLF_color;
#
# void main()
# {
#     float a = mod(uintBitsToFloat(1u), 1.0);
#
#     _GLF_color = vec4(_float_0_0);
#     if (a < _float_0_01)
#         _GLF_color = vec4(_float_1_0, _float_0_0, _float_0_0, _float_1_0);
# }
SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
; SPIR-V
; Version: 1.0
; Generator: Khronos Glslang Reference Front End; 10
; Bound: 46
; Schema: 0
               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %4 "main" %16
               OpExecutionMode %4 OriginUpperLeft
               OpSource ESSL 310
               OpName %4 "main"
               OpName %8 "a"
               OpName %16 "_GLF_color"
               OpName %19 "buf0"
               OpMemberName %19 0 "_GLF_uniform_float_values"
               OpName %21 ""
               OpDecorate %16 Location 0
               OpDecorate %18 ArrayStride 16
               OpMemberDecorate %19 0 Offset 0
               OpDecorate %19 Block
               OpDecorate %21 DescriptorSet 0
               OpDecorate %21 Binding 0
          %2 = OpTypeVoid
          %3 = OpTypeFunction %2
          %6 = OpTypeFloat 32
          %7 = OpTypePointer Function %6
          %9 = OpTypeInt 32 0
         %10 = OpConstant %9 1
         %12 = OpConstant %6 1
         %14 = OpTypeVector %6 4
         %15 = OpTypePointer Output %14
         %16 = OpVariable %15 Output
         %17 = OpConstant %9 3
         %18 = OpTypeArray %6 %17
         %19 = OpTypeStruct %18
         %20 = OpTypePointer Uniform %19
         %21 = OpVariable %20 Uniform
         %22 = OpTypeInt 32 1
         %23 = OpConstant %22 0
         %24 = OpConstant %22 1
         %25 = OpTypePointer Uniform %6
         %30 = OpConstant %22 2
         %33 = OpTypeBool
          %4 = OpFunction %2 None %3
          %5 = OpLabel
          %8 = OpVariable %7 Function
         %11 = OpBitcast %6 %10
         %13 = OpFMod %6 %11 %12
               OpStore %8 %13
         %26 = OpAccessChain %25 %21 %23 %24
         %27 = OpLoad %6 %26
         %28 = OpCompositeConstruct %14 %27 %27 %27 %27
               OpStore %16 %28
         %29 = OpLoad %6 %8
         %31 = OpAccessChain %25 %21 %23 %30
         %32 = OpLoad %6 %31
         %34 = OpFOrdLessThan %33 %29 %32
               OpSelectionMerge %36 None
               OpBranchConditional %34 %35 %36
         %35 = OpLabel
         %37 = OpAccessChain %25 %21 %23 %23
         %38 = OpLoad %6 %37
         %39 = OpAccessChain %25 %21 %23 %24
         %40 = OpLoad %6 %39
         %41 = OpAccessChain %25 %21 %23 %24
         %42 = OpLoad %6 %41
         %43 = OpAccessChain %25 %21 %23 %23
         %44 = OpLoad %6 %43
         %45 = OpCompositeConstruct %14 %38 %40 %42 %44
               OpStore %16 %45
               OpBranch %36
         %36 = OpLabel
               OpReturn
               OpFunctionEnd
END

# uniforms for variant

# _GLF_uniform_float_values
BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
 1.0 0.0 0.01
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__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