Merge pull request #965 from chaoc/spv-khr-post-depth-coverage

Implement SPV_KHR_post_depth_coverage

Test/baseResults/spv.arbPostDepthCoverage.frag.out

@@ -0,0 +1,43 @@
+spv.arbPostDepthCoverage.frag
+// Module Version 10000
+// Generated by (magic number): 80001
+// Id's are bound by 18
+
+                              Capability Shader
+                              Capability SampleRateShading
+                              Capability SampleMaskPostDepthCoverage
+                              Extension  "SPV_KHR_post_depth_coverage"
+               1:             ExtInstImport  "GLSL.std.450"
+                              MemoryModel Logical GLSL450
+                              EntryPoint Fragment 4  "main" 8 13
+                              ExecutionMode 4 OriginUpperLeft
+                              ExecutionMode 4 EarlyFragmentTests
+                              ExecutionMode 4 PostDepthCoverage
+                              Source GLSL 450
+                              SourceExtension  "GL_ARB_post_depth_coverage"
+                              SourceExtension  "GL_EXT_post_depth_coverage"
+                              Name 4  "main"
+                              Name 8  "readSampleMaskIn"
+                              Name 13  "gl_SampleMaskIn"
+                              Decorate 8(readSampleMaskIn) Location 0
+                              Decorate 13(gl_SampleMaskIn) Flat
+                              Decorate 13(gl_SampleMaskIn) BuiltIn SampleMask
+               2:             TypeVoid
+               3:             TypeFunction 2
+               6:             TypeInt 32 1
+               7:             TypePointer Output 6(int)
+8(readSampleMaskIn):      7(ptr) Variable Output
+               9:             TypeInt 32 0
+              10:      9(int) Constant 1
+              11:             TypeArray 6(int) 10
+              12:             TypePointer Input 11
+13(gl_SampleMaskIn):     12(ptr) Variable Input
+              14:      6(int) Constant 0
+              15:             TypePointer Input 6(int)
+         4(main):           2 Function None 3
+               5:             Label
+              16:     15(ptr) AccessChain 13(gl_SampleMaskIn) 14
+              17:      6(int) Load 16
+                              Store 8(readSampleMaskIn) 17
+                              Return
+                              FunctionEnd

Test/baseResults/spv.arbPostDepthCoverage_Error.frag.out

@@ -0,0 +1,7 @@
+spv.arbPostDepthCoverage_Error.frag
+ERROR: 0:7: 'early_fragment_tests' : can only apply to a standalone qualifier 
+ERROR: 0:7: 'post_depth_coverage' : can only apply to a standalone qualifier 
+ERROR: 2 compilation errors.  No code generated.
+
+
+SPIR-V is not generated for failed compile or link

Test/baseResults/spv.extPostDepthCoverage.frag.out

@@ -0,0 +1,23 @@
+spv.extPostDepthCoverage.frag
+// Module Version 10000
+// Generated by (magic number): 80001
+// Id's are bound by 6
+
+                              Capability Shader
+                              Capability SampleMaskPostDepthCoverage
+                              Extension  "SPV_KHR_post_depth_coverage"
+               1:             ExtInstImport  "GLSL.std.450"
+                              MemoryModel Logical GLSL450
+                              EntryPoint Fragment 4  "main"
+                              ExecutionMode 4 OriginUpperLeft
+                              ExecutionMode 4 EarlyFragmentTests
+                              ExecutionMode 4 PostDepthCoverage
+                              Source ESSL 310
+                              SourceExtension  "GL_EXT_post_depth_coverage"
+                              Name 4  "main"
+               2:             TypeVoid
+               3:             TypeFunction 2
+         4(main):           2 Function None 3
+               5:             Label
+                              Return
+                              FunctionEnd

Test/baseResults/spv.extPostDepthCoverage_Error.frag.out

@@ -0,0 +1,4 @@
+spv.extPostDepthCoverage_Error.frag
+ERROR: Linking fragment stage: post_depth_coverage requires early_fragment_tests
+
+SPIR-V is not generated for failed compile or link

Test/spv.arbPostDepthCoverage.frag

@@ -0,0 +1,13 @@
+#version 450
+
+#extension GL_ARB_post_depth_coverage : enable
+#extension GL_EXT_post_depth_coverage : enable //according to ARB_post_depth_coverage, 
+                                               //if both enabled, this one should be ignored
+precision highp int;
+layout(post_depth_coverage) in;
+
+layout (location = 0) out int readSampleMaskIn;
+
+void main () {
+    readSampleMaskIn = gl_SampleMaskIn[0];
+}

Test/spv.arbPostDepthCoverage_Error.frag

@@ -0,0 +1,12 @@
+#version 310 es
+
+#extension GL_ARB_post_depth_coverage : enable
+
+precision highp float;
+
+layout(post_depth_coverage, location = 0) in float a;  // should fail since post_depth_coverage may only
+                                                       // be declared on in only (not with variable declarations)
+
+void main () {
+
+}

Test/spv.extPostDepthCoverage.frag

@@ -0,0 +1,9 @@
+#version 310 es
+
+#extension GL_EXT_post_depth_coverage : enable
+
+layout(post_depth_coverage) in;
+layout(early_fragment_tests) in;
+
+void main () {
+}

Test/spv.extPostDepthCoverage_Error.frag

@@ -0,0 +1,9 @@
+#version 450
+
+#extension GL_EXT_post_depth_coverage : enable
+
+layout(post_depth_coverage) in; // should fail since for GL_EXT_post_depth_coverage
+                                // explicit declaration of early_fragment_tests is required
+
+void main () {
+}