Revert of Import functionality for new GL backend (patchset #2 id:20001 of https://codereview.chromium.org/1185573003/)

Reason for revert:
breaking multiple builds. For example...

https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Debug-ASAN/builds/667

Original issue's description:
> Import functionality for new GL backend
>
> Brings in the following functionality:
>
>   ARB_draw_instanced
>   ARB_instanced_arrays
>   NV_bindless_texture
>   EXT_direct_state_access
>   KHR_debug
>
> Also cleans up some of the NVPR extension loading.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/202c4c75fb806f751cf796850bf67fe9793e0643

TBR=bsalomon@google.com,cdalton@nvidia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1184863002

1 files changed, 3 insertions, 33 deletions

diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index eacf6f6084..91cf83147c 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -39,9 +39,6 @@ GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions,
     fTwoFormatLimit = false;
     fFragCoordsConventionSupport = false;
     fVertexArrayObjectSupport = false;
-    fInstancedDrawingSupport = false;
-    fDirectStateAccessSupport = false;
-    fDebugSupport = false;
     fES2CompatibilitySupport = false;
     fMultisampleDisableSupport = false;
     fUseNonVBOVertexAndIndexDynamicData = false;
@@ -92,8 +89,6 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
         }
     }
 
-    glslCaps->fBindlessTextureSupport = ctxInfo.hasExtension("GL_NV_bindless_texture");
-
     // Adreno GPUs have a tendency to drop tiles when there is a divide-by-zero in a shader
     glslCaps->fDropsTileOnZeroDivide = kQualcomm_GrGLVendor == ctxInfo.vendor();
 
@@ -235,28 +230,6 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
                                     ctxInfo.hasExtension("GL_OES_vertex_array_object");
     }
 
-    if ((kGL_GrGLStandard == standard && version >= GR_GL_VER(3,2)) ||
-        (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0))) {
-        fInstancedDrawingSupport = true;
-    } else {
-        fInstancedDrawingSupport = (ctxInfo.hasExtension("GL_ARB_draw_instanced") ||
-                                    ctxInfo.hasExtension("GL_EXT_draw_instanced")) &&
-                                   (ctxInfo.hasExtension("GL_ARB_instanced_arrays") ||
-                                    ctxInfo.hasExtension("GL_EXT_instanced_arrays"));
-    }
-
-    if (kGL_GrGLStandard == standard) {
-        fDirectStateAccessSupport = ctxInfo.hasExtension("GL_EXT_direct_state_access");
-    } else {
-        fDirectStateAccessSupport = false;
-    }
-
-    if (kGL_GrGLStandard == standard && version >= GR_GL_VER(4,3)) {
-        fDebugSupport = true;
-    } else {
-        fDebugSupport = ctxInfo.hasExtension("GL_KHR_debug");
-    }
-
     if (kGL_GrGLStandard == standard) {
         fES2CompatibilitySupport = ctxInfo.hasExtension("GL_ARB_ES2_compatibility");
     }
@@ -281,7 +254,9 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
             // We only support v1.3+ of GL_NV_path_rendering which allows us to
             // set individual fragment inputs with ProgramPathFragmentInputGen. The API
             // additions are detected by checking the existence of the function.
-            glslCaps->fPathRenderingSupport = ((ctxInfo.version() >= GR_GL_VER(4, 3) ||
+            glslCaps->fPathRenderingSupport =
+                ctxInfo.hasExtension("GL_EXT_direct_state_access") &&
+                ((ctxInfo.version() >= GR_GL_VER(4, 3) ||
                 ctxInfo.hasExtension("GL_ARB_program_interface_query")) &&
                 gli->fFunctions.fProgramPathFragmentInputGen);
         }
@@ -1048,9 +1023,6 @@ SkString GrGLCaps::dump() const {
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
-    r.appendf("Instanced drawing support: %s\n", (fInstancedDrawingSupport ? "YES": "NO"));
-    r.appendf("Direct state access support: %s\n", (fDirectStateAccessSupport ? "YES": "NO"));
-    r.appendf("Debug support: %s\n", (fDebugSupport ? "YES": "NO"));
     r.appendf("Multisample disable support: %s\n", (fMultisampleDisableSupport ? "YES" : "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
@@ -1067,7 +1039,6 @@ GrGLSLCaps::GrGLSLCaps(const GrContextOptions& options,
     fDropsTileOnZeroDivide = false;
     fFBFetchSupport = false;
     fFBFetchNeedsCustomOutput = false;
-    fBindlessTextureSupport = false;
     fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction;
     fFBFetchColorName = NULL;
     fFBFetchExtensionString = NULL;
@@ -1092,7 +1063,6 @@ SkString GrGLSLCaps::dump() const {
 
     r.appendf("FB Fetch Support: %s\n", (fFBFetchSupport ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
-    r.appendf("Bindless texture support: %s\n", (fBindlessTextureSupport ? "YES" : "NO"));
     r.appendf("Advanced blend equation interaction: %s\n",
               kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]);
     return r;