1 files changed, 103 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2ContextSamplers.cpp b/dom/canvas/WebGL2ContextSamplers.cpp
new file mode 100644
index 0000000000..9656e52471
--- /dev/null
+++ b/dom/canvas/WebGL2ContextSamplers.cpp
@@ -0,0 +1,103 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebGL2Context.h"
+#include "WebGLSampler.h"
+#include "GLContext.h"
+
+namespace mozilla {
+
+RefPtr<WebGLSampler> WebGL2Context::CreateSampler() {
+  const FuncScope funcScope(*this, "createSampler");
+  if (IsContextLost()) return nullptr;
+
+  return new WebGLSampler(this);
+}
+
+void WebGL2Context::BindSampler(GLuint unit, WebGLSampler* sampler) {
+  FuncScope funcScope(*this, "bindSampler");
+  if (IsContextLost()) return;
+  funcScope.mBindFailureGuard = true;
+
+  if (sampler && !ValidateObject("sampler", *sampler)) return;
+
+  if (unit >= mBoundSamplers.Length())
+    return ErrorInvalidValue("unit must be < %u", mBoundSamplers.Length());
+
+  ////
+
+  gl->fBindSampler(unit, sampler ? sampler->mGLName : 0);
+
+  mBoundSamplers[unit] = sampler;
+
+  funcScope.mBindFailureGuard = false;
+}
+
+void WebGL2Context::SamplerParameteri(WebGLSampler& sampler, GLenum pname,
+                                      GLint param) {
+  const FuncScope funcScope(*this, "samplerParameteri");
+  if (IsContextLost()) return;
+
+  if (!ValidateObject("sampler", sampler)) return;
+
+  sampler.SamplerParameter(pname, FloatOrInt(param));
+}
+
+void WebGL2Context::SamplerParameterf(WebGLSampler& sampler, GLenum pname,
+                                      GLfloat param) {
+  const FuncScope funcScope(*this, "samplerParameterf");
+  if (IsContextLost()) return;
+
+  if (!ValidateObject("sampler", sampler)) return;
+
+  sampler.SamplerParameter(pname, FloatOrInt(param));
+}
+
+Maybe<double> WebGL2Context::GetSamplerParameter(const WebGLSampler& sampler,
+                                                 GLenum pname) const {
+  const FuncScope funcScope(*this, "getSamplerParameter");
+  if (IsContextLost()) return {};
+
+  if (!ValidateObject("sampler", sampler)) return {};
+
+  ////
+
+  const auto fnAsFloat = [&]() {
+    GLfloat param = 0;
+    gl->fGetSamplerParameterfv(sampler.mGLName, pname, &param);
+    return param;
+  };
+
+  switch (pname) {
+    case LOCAL_GL_TEXTURE_MIN_FILTER:
+    case LOCAL_GL_TEXTURE_MAG_FILTER:
+    case LOCAL_GL_TEXTURE_WRAP_S:
+    case LOCAL_GL_TEXTURE_WRAP_T:
+    case LOCAL_GL_TEXTURE_WRAP_R:
+    case LOCAL_GL_TEXTURE_COMPARE_MODE:
+    case LOCAL_GL_TEXTURE_COMPARE_FUNC: {
+      GLint param = 0;
+      gl->fGetSamplerParameteriv(sampler.mGLName, pname, &param);
+      return Some(param);
+    }
+    case LOCAL_GL_TEXTURE_MIN_LOD:
+    case LOCAL_GL_TEXTURE_MAX_LOD:
+      return Some(fnAsFloat());
+
+    case LOCAL_GL_TEXTURE_MAX_ANISOTROPY:
+      if (!IsExtensionEnabled(
+              WebGLExtensionID::EXT_texture_filter_anisotropic)) {
+        break;
+      }
+      return Some(fnAsFloat());
+
+    default:
+      break;
+  }
+  ErrorInvalidEnumInfo("pname", pname);
+  return {};
+}
+
+}  // namespace mozilla