[Piglit] [PATCH 12/17] arb_gl_spirv: add ubo array test with different array_stride
Alejandro Piñeiro
apinheiro at igalia.com
Fri Sep 21 10:19:35 UTC 2018
On 21/09/18 00:13, Timothy Arceri wrote:
> On 16/9/18 2:22 am, Alejandro Piñeiro wrote:
>> For more info, see the long explanation at the commit "arb_gl_spirv:
>> add ubo matrix test with different matrix_stride"
>> ---
>> .../array-different-array-stride-ubo.shader_test | 147
>> +++++++++++++++++++++
>> 1 file changed, 147 insertions(+)
>> create mode 100644
>> tests/spec/arb_gl_spirv/execution/ubo/array-different-array-stride-ubo.shader_test
>>
>> diff --git
>> a/tests/spec/arb_gl_spirv/execution/ubo/array-different-array-stride-ubo.shader_test
>> b/tests/spec/arb_gl_spirv/execution/ubo/array-different-array-stride-ubo.shader_test
>>
>> new file mode 100644
>> index 000000000..0638864b2
>> --- /dev/null
>> +++
>> b/tests/spec/arb_gl_spirv/execution/ubo/array-different-array-stride-ubo.shader_test
>> @@ -0,0 +1,147 @@
>> +# UBO test using two ubos, with an array with the same size and type,
>> +# but setting a different array stride for each one. Used to test that
>> +# the size is properly computed, and the content properly accessed in
>> +# both cases.
>> +
>> +[require]
>> +SPIRV ONLY
>> +GL >= 3.3
>> +GLSL >= 3.30
>> +
>> +[vertex shader passthrough]
>> +
>> +[fragment shader spirv]
>> +; Automatically generated from the GLSL by shader_test_spirv.py, and
>> then edited by hand to set the proper array stride
>> +; SPIR-V
>> +; Version: 1.0
>> +; Generator: Khronos Glslang Reference Front End; 7
>> +; Bound: 47
>> +; Schema: 0
>> + OpCapability Shader
>> + %1 = OpExtInstImport "GLSL.std.450"
>> + OpMemoryModel Logical GLSL450
>> + OpEntryPoint Fragment %main "main" %color
>> + OpExecutionMode %main OriginLowerLeft
>> + OpSource GLSL 450
>> + OpName %_ ""
>> + OpName %__0 ""
>> + OpDecorate %color Location 0
>> + OpDecorate %_arr_v4float_uint_3 ArrayStride 16
>> + OpMemberDecorate %block16 0 Offset 0
>> + OpDecorate %block16 Block
>> + OpDecorate %_ DescriptorSet 0
>> + OpDecorate %_ Binding 5
>> + OpDecorate %_arr_v4float_uint_3_0 ArrayStride 32
>> + OpMemberDecorate %block32 0 Offset 0
>> + OpDecorate %block32 Block
>> + OpDecorate %__0 DescriptorSet 0
>> + OpDecorate %__0 Binding 6
>> + %void = OpTypeVoid
>> + %3 = OpTypeFunction %void
>> + %float = OpTypeFloat 32
>> + %v4float = OpTypeVector %float 4
>> +%_ptr_Output_v4float = OpTypePointer Output %v4float
>> + %color = OpVariable %_ptr_Output_v4float Output
>> + %uint = OpTypeInt 32 0
>> + %uint_3 = OpConstant %uint 3
>> +%_arr_v4float_uint_3 = OpTypeArray %v4float %uint_3
>> + %block16 = OpTypeStruct %_arr_v4float_uint_3
>> +%_ptr_Uniform_block16 = OpTypePointer Uniform %block16
>> + %_ = OpVariable %_ptr_Uniform_block16 Uniform
>> + %int = OpTypeInt 32 1
>> + %int_0 = OpConstant %int 0
>> +%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
>> + %int_1 = OpConstant %int 1
>> + %int_2 = OpConstant %int 2
>> +%_arr_v4float_uint_3_0 = OpTypeArray %v4float %uint_3
>> + %block32 = OpTypeStruct %_arr_v4float_uint_3_0
>> +%_ptr_Uniform_block32 = OpTypePointer Uniform %block32
>> + %__0 = OpVariable %_ptr_Uniform_block32 Uniform
>> + %float_0 = OpConstant %float 0
>> + %float_1 = OpConstant %float 1
>> + %44 = OpConstantComposite %v4float %float_0 %float_1
>> %float_0 %float_0
>> + %main = OpFunction %void None %3
>> + %5 = OpLabel
>> + %19 = OpAccessChain %_ptr_Uniform_v4float %_ %int_0 %int_0
>> + %20 = OpLoad %v4float %19
>> + %22 = OpAccessChain %_ptr_Uniform_v4float %_ %int_0 %int_1
>> + %23 = OpLoad %v4float %22
>> + %24 = OpFAdd %v4float %20 %23
>> + %26 = OpAccessChain %_ptr_Uniform_v4float %_ %int_0 %int_2
>> + %27 = OpLoad %v4float %26
>> + %28 = OpFAdd %v4float %24 %27
>> + %33 = OpAccessChain %_ptr_Uniform_v4float %__0 %int_0 %int_0
>> + %34 = OpLoad %v4float %33
>> + %35 = OpFSub %v4float %28 %34
>> + %36 = OpAccessChain %_ptr_Uniform_v4float %__0 %int_0 %int_1
>> + %37 = OpLoad %v4float %36
>> + %38 = OpFSub %v4float %35 %37
>> + %39 = OpAccessChain %_ptr_Uniform_v4float %__0 %int_0 %int_2
>> + %40 = OpLoad %v4float %39
>> + %41 = OpFSub %v4float %38 %40
>> + OpStore %color %41
>> + %45 = OpLoad %v4float %color
>> + %46 = OpFAdd %v4float %45 %44
>> + OpStore %color %46
>> + OpReturn
>> + OpFunctionEnd
>> +
>> +[fragment shader]
>> +#version 450
>> +
>> +layout (location = 0) out vec4 color;
>> +
>> +layout (std140, binding = 5) uniform block16 {
>> + vec4 arr16[3];
>> +};
>> +
>> +/*
>> + * This array will have a array_stride of 32.
>> + *
>> + * Note that there is no way to set a explicit array_stride on GLSL.
>> This GLSL
>> + * was used initially to generate the SPIRV-V, and then array stride
>> was tweaked.
>> + * That's the reason this is a SPIRV ONLY test. GLSL here is just as
>> reference.
>> + */
>> +layout (std140, binding = 6) uniform block32 {
>> + vec4 arr32[3];
>> +};
>> +
>> +
>> +void main()
>> +{
>> + color = arr16[0] + arr16[1] + arr16[2] - arr32[0] - arr32[1] -
>> arr32[2];
>
> IMO this is not a very good way to test the values. If the offsets are
> not working correctly or something else is wrong it's very easy for
> the values to end up as vec4(0.0) or similar. So if both blocks are
> set wrong this test will end up passing.
Ok, I will change all the tests that do this additions and
substractions, and replace them with checking the value of the
array/matrix as we do in other tests. In addition to what you mention,
that would make the set of tests more consistent.
If you don't mind, I will do that changes locally, but will not send the
new version until we get more feedback on the patches.
>
>
>> + color += vec4(0.0, 1.0, 0.0, 0.0);
>> +}
>> +
>> +[test]
>> +clear color 0.2 0.2 0.2 0.2
>> +clear
>> +
>> +block binding 5
>> +block offset 0
>> +uniform vec4 arr16[0] 0.0 0.1 0.2 0.3
>> +block offset 16
>> +uniform vec4 arr16[1] 0.4 0.5 0.6 0.2
>> +block offset 32
>> +uniform vec4 arr16[2] 0.1 0.3 0.1 0.2
>> +
>> +block binding 6
>> +block offset 0
>> +uniform vec4 arr32[0] 0.0 0.1 0.2 0.3
>> +block offset 32
>> +uniform vec4 arr32[1] 0.4 0.5 0.6 0.2
>> +block offset 64
>> +uniform vec4 arr32[2] 0.1 0.3 0.1 0.2
>> +
>> +block binding 5
>> +verify program_interface_query GL_UNIFORM_BLOCK block16
>> GL_NUM_ACTIVE_VARIABLES 1
>> +verify program_interface_query GL_UNIFORM_BLOCK block16
>> GL_BUFFER_DATA_SIZE 48
>> +
>> +block binding 6
>> +verify program_interface_query GL_UNIFORM_BLOCK block32
>> GL_NUM_ACTIVE_VARIABLES 1
>> +verify program_interface_query GL_UNIFORM_BLOCK block32
>> GL_BUFFER_DATA_SIZE 96
>> +
>> +verify program_query GL_ACTIVE_UNIFORMS 2
>> +
>> +draw rect -1 -1 2 2
>> +probe all rgba 0.0 1.0 0.0 0.0
>>
>
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