Add caps bit for nonsquare matrix availability.

Change-Id: Ifddf49096943260eefa8d313a8a90a74ddb27097
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/403078
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

src/gpu/GrShaderCaps.cpp

@@ -21,6 +21,7 @@ GrShaderCaps::GrShaderCaps(const GrContextOptions& options) {
     fDstReadInShaderSupport = false;
     fDualSourceBlendingSupport = false;
     fIntegerSupport = false;
+    fNonsquareMatrixSupport = false;
     fFBFetchSupport = false;
     fFBFetchNeedsCustomOutput = false;
     fUsesPrecisionModifiers = false;
@@ -90,6 +91,7 @@ void GrShaderCaps::dumpJSON(SkJSONWriter* writer) const {
     writer->appendBool("Dst Read In Shader Support", fDstReadInShaderSupport);
     writer->appendBool("Dual Source Blending Support", fDualSourceBlendingSupport);
     writer->appendBool("Integer Support", fIntegerSupport);
+    writer->appendBool("Nonsquare Matrix Support", fNonsquareMatrixSupport);
 
     static const char* kAdvBlendEqInteractionStr[] = {
         "Not Supported",

src/gpu/GrShaderCaps.h

@@ -47,6 +47,7 @@ public:
     bool dstReadInShaderSupport() const { return fDstReadInShaderSupport; }
     bool dualSourceBlendingSupport() const { return fDualSourceBlendingSupport; }
     bool integerSupport() const { return fIntegerSupport; }
+    bool nonsquareMatrixSupport() const { return fNonsquareMatrixSupport; }
 
     /**
      * Some helper functions for encapsulating various extensions to read FB Buffer on openglES
@@ -273,6 +274,7 @@ private:
     bool fDstReadInShaderSupport            : 1;
     bool fDualSourceBlendingSupport         : 1;
     bool fIntegerSupport                    : 1;
+    bool fNonsquareMatrixSupport            : 1;
     bool fFBFetchSupport                    : 1;
     bool fFBFetchNeedsCustomOutput          : 1;
     bool fUsesPrecisionModifiers            : 1;

src/gpu/gl/GrGLCaps.cpp

@@ -375,6 +375,8 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
 
         shaderCaps->fIntegerSupport = version >= GR_GL_VER(3, 0) &&
             ctxInfo.glslGeneration() >= k130_GrGLSLGeneration;
+
+        shaderCaps->fNonsquareMatrixSupport = ctxInfo.glslGeneration() >= k130_GrGLSLGeneration;
     } else if (GR_IS_GR_GL_ES(standard)) {
         shaderCaps->fDualSourceBlendingSupport = ctxInfo.hasExtension("GL_EXT_blend_func_extended");
 
@@ -399,11 +401,13 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
 
         shaderCaps->fIntegerSupport = version >= GR_GL_VER(3, 0) &&
             ctxInfo.glslGeneration() >= k330_GrGLSLGeneration; // We use this value for GLSL ES 3.0.
+        shaderCaps->fNonsquareMatrixSupport = ctxInfo.glslGeneration() >= k330_GrGLSLGeneration;
     } else if (GR_IS_GR_WEBGL(standard)) {
         shaderCaps->fShaderDerivativeSupport = version >= GR_GL_VER(2, 0) ||
                                                ctxInfo.hasExtension("GL_OES_standard_derivatives") ||
                                                ctxInfo.hasExtension("OES_standard_derivatives");
         shaderCaps->fIntegerSupport = (version >= GR_GL_VER(2, 0));
+        shaderCaps->fNonsquareMatrixSupport = ctxInfo.glslGeneration() >= k330_GrGLSLGeneration;
     }
 
     if (ctxInfo.hasExtension("GL_NV_conservative_raster")) {

src/gpu/mtl/GrMtlCaps.mm

@@ -472,6 +472,7 @@ void GrMtlCaps::initShaderCaps() {
     shaderCaps->fDstReadInShaderSupport = shaderCaps->fFBFetchSupport;
 
     shaderCaps->fIntegerSupport = true;
+    shaderCaps->fNonsquareMatrixSupport = true;
     shaderCaps->fVertexIDSupport = false;
 
     // Metal uses IEEE float and half floats so assuming those values here.

src/gpu/vk/GrVkCaps.cpp

@@ -714,6 +714,7 @@ void GrVkCaps::initShaderCaps(const VkPhysicalDeviceProperties& properties,
     shaderCaps->fDualSourceBlendingSupport = features.features.dualSrcBlend;
 
     shaderCaps->fIntegerSupport = true;
+    shaderCaps->fNonsquareMatrixSupport = true;
     shaderCaps->fVertexIDSupport = true;
     shaderCaps->fFPManipulationSupport = true;
 

src/sksl/SkSLUtil.h

@@ -164,6 +164,11 @@ public:
         return fIntegerSupport;
     }
 
+    bool fNonsquareMatrixSupport = false;
+    bool nonsquareMatrixSupport() const {
+        return fNonsquareMatrixSupport;
+    }
+
     bool fBuiltinFMASupport = false;
     bool builtinFMASupport() const {
         return fBuiltinFMASupport;