Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 305 insertions, 0 deletions

diff --git a/dom/canvas/WebGLContextVertices.cpp b/dom/canvas/WebGLContextVertices.cpp
new file mode 100644
index 0000000000..e50f5f1c3d
--- /dev/null
+++ b/dom/canvas/WebGLContextVertices.cpp
@@ -0,0 +1,305 @@
+/* -*- 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 "WebGLContext.h"
+
+#include "GLContext.h"
+#include "mozilla/Casting.h"
+#include "mozilla/CheckedInt.h"
+#include "WebGLBuffer.h"
+#include "WebGLFramebuffer.h"
+#include "WebGLProgram.h"
+#include "WebGLRenderbuffer.h"
+#include "WebGLShader.h"
+#include "WebGLTexture.h"
+#include "WebGLTypes.h"
+#include "WebGLVertexArray.h"
+
+#include "mozilla/ResultVariant.h"
+
+namespace mozilla {
+
+static bool ValidateAttribIndex(WebGLContext& webgl, GLuint index) {
+  bool valid = (index < webgl.MaxVertexAttribs());
+
+  if (!valid) {
+    if (index == GLuint(-1)) {
+      webgl.ErrorInvalidValue(
+          "-1 is not a valid `index`. This value"
+          " probably comes from a getAttribLocation()"
+          " call, where this return value -1 means"
+          " that the passed name didn't correspond to"
+          " an active attribute in the specified"
+          " program.");
+    } else {
+      webgl.ErrorInvalidValue(
+          "`index` must be less than"
+          " MAX_VERTEX_ATTRIBS.");
+    }
+  }
+
+  return valid;
+}
+
+////////////////////////////////////////
+
+void WebGLContext::VertexAttrib4T(GLuint index, const webgl::TypedQuad& src) {
+  const FuncScope funcScope(*this, "vertexAttrib[1234]u?[fi]v?");
+  if (IsContextLost()) return;
+
+  if (!ValidateAttribIndex(*this, index)) return;
+
+  ////
+
+  if (index || !gl->IsCompatibilityProfile()) {
+    switch (src.type) {
+      case webgl::AttribBaseType::Boolean:
+      case webgl::AttribBaseType::Float:
+        gl->fVertexAttrib4fv(index,
+                             reinterpret_cast<const float*>(src.data.data()));
+        break;
+      case webgl::AttribBaseType::Int:
+        gl->fVertexAttribI4iv(
+            index, reinterpret_cast<const int32_t*>(src.data.data()));
+        break;
+      case webgl::AttribBaseType::Uint:
+        gl->fVertexAttribI4uiv(
+            index, reinterpret_cast<const uint32_t*>(src.data.data()));
+        break;
+    }
+  }
+
+  ////
+
+  mGenericVertexAttribTypes[index] = src.type;
+  mGenericVertexAttribTypeInvalidator.InvalidateCaches();
+
+  if (!index) {
+    memcpy(mGenericVertexAttrib0Data, src.data.data(),
+           sizeof(mGenericVertexAttrib0Data));
+  }
+}
+
+////////////////////////////////////////
+
+void WebGLContext::EnableVertexAttribArray(GLuint index) {
+  const FuncScope funcScope(*this, "enableVertexAttribArray");
+  if (IsContextLost()) return;
+
+  if (!ValidateAttribIndex(*this, index)) return;
+
+  gl->fEnableVertexAttribArray(index);
+
+  MOZ_ASSERT(mBoundVertexArray);
+  mBoundVertexArray->SetAttribIsArray(index, true);
+}
+
+void WebGLContext::DisableVertexAttribArray(GLuint index) {
+  const FuncScope funcScope(*this, "disableVertexAttribArray");
+  if (IsContextLost()) return;
+
+  if (!ValidateAttribIndex(*this, index)) return;
+
+  if (index || !gl->IsCompatibilityProfile()) {
+    gl->fDisableVertexAttribArray(index);
+  }
+
+  MOZ_ASSERT(mBoundVertexArray);
+  mBoundVertexArray->SetAttribIsArray(index, false);
+}
+
+Maybe<double> WebGLContext::GetVertexAttrib(GLuint index, GLenum pname) {
+  const FuncScope funcScope(*this, "getVertexAttrib");
+  if (IsContextLost()) return Nothing();
+
+  if (!ValidateAttribIndex(*this, index)) return Nothing();
+
+  MOZ_ASSERT(mBoundVertexArray);
+  auto ret = mBoundVertexArray->GetVertexAttrib(index, pname);
+
+  switch (pname) {
+    case LOCAL_GL_VERTEX_ATTRIB_ARRAY_INTEGER:
+      if (!IsWebGL2()) {
+        ret = Nothing();
+      }
+      break;
+
+    case LOCAL_GL_VERTEX_ATTRIB_ARRAY_DIVISOR:
+      if (!IsWebGL2() &&
+          !IsExtensionEnabled(WebGLExtensionID::ANGLE_instanced_arrays)) {
+        ret = Nothing();
+      }
+      break;
+  }
+
+  if (!ret) {
+    ErrorInvalidEnumInfo("pname", pname);
+  }
+  return ret;
+}
+
+////////////////////////////////////////
+
+Result<webgl::VertAttribPointerCalculated, webgl::ErrorInfo>
+CheckVertexAttribPointer(const bool isWebgl2,
+                         const webgl::VertAttribPointerDesc& desc) {
+  if (desc.channels < 1 || desc.channels > 4) {
+    return Err(webgl::ErrorInfo{LOCAL_GL_INVALID_VALUE,
+                                "Channel count `size` must be within [1,4]."});
+  }
+
+  ////
+
+  webgl::VertAttribPointerCalculated calc;
+
+  bool isTypeValid = true;
+  bool isPackedType = false;
+  uint8_t bytesPerType = 0;
+  switch (desc.type) {
+    // WebGL 1:
+    case LOCAL_GL_BYTE:
+      bytesPerType = 1;
+      calc.baseType = webgl::AttribBaseType::Int;
+      break;
+    case LOCAL_GL_UNSIGNED_BYTE:
+      bytesPerType = 1;
+      calc.baseType = webgl::AttribBaseType::Uint;
+      break;
+
+    case LOCAL_GL_SHORT:
+      bytesPerType = 2;
+      calc.baseType = webgl::AttribBaseType::Int;
+      break;
+    case LOCAL_GL_UNSIGNED_SHORT:
+      bytesPerType = 2;
+      calc.baseType = webgl::AttribBaseType::Uint;
+      break;
+
+    case LOCAL_GL_FLOAT:
+      bytesPerType = 4;
+      calc.baseType = webgl::AttribBaseType::Float;
+      break;
+
+    // WebGL 2:
+    case LOCAL_GL_INT:
+      isTypeValid = isWebgl2;
+      bytesPerType = 4;
+      calc.baseType = webgl::AttribBaseType::Int;
+      break;
+    case LOCAL_GL_UNSIGNED_INT:
+      isTypeValid = isWebgl2;
+      bytesPerType = 4;
+      calc.baseType = webgl::AttribBaseType::Uint;
+      break;
+
+    case LOCAL_GL_HALF_FLOAT:
+      isTypeValid = isWebgl2;
+      bytesPerType = 2;
+      calc.baseType = webgl::AttribBaseType::Float;
+      break;
+
+    case LOCAL_GL_INT_2_10_10_10_REV:
+    case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
+      if (desc.channels != 4) {
+        return Err(webgl::ErrorInfo{LOCAL_GL_INVALID_OPERATION,
+                                    "Size must be 4 for this type."});
+      }
+      isTypeValid = isWebgl2;
+      bytesPerType = 4;
+      calc.baseType =
+          webgl::AttribBaseType::Float;  // Invalid for intFunc:true.
+      isPackedType = true;
+      break;
+
+    default:
+      isTypeValid = false;
+      break;
+  }
+  if (desc.intFunc) {
+    isTypeValid = (calc.baseType != webgl::AttribBaseType::Float);
+  } else {
+    calc.baseType = webgl::AttribBaseType::Float;
+  }
+  if (!isTypeValid) {
+    const auto info =
+        nsPrintfCString("Bad `type`: %s", EnumString(desc.type).c_str());
+    return Err(webgl::ErrorInfo{LOCAL_GL_INVALID_ENUM, info.BeginReading()});
+  }
+
+  ////
+
+  calc.byteSize = bytesPerType;
+  if (!isPackedType) {
+    calc.byteSize *= desc.channels;
+  }
+
+  calc.byteStride =
+      desc.byteStrideOrZero ? desc.byteStrideOrZero : calc.byteSize;
+
+  // `alignment` should always be a power of two.
+  MOZ_ASSERT(IsPowerOfTwo(bytesPerType));
+  const auto typeAlignmentMask = bytesPerType - 1;
+
+  if (calc.byteStride & typeAlignmentMask ||
+      desc.byteOffset & typeAlignmentMask) {
+    return Err(
+        webgl::ErrorInfo{LOCAL_GL_INVALID_OPERATION,
+                         "`stride` and `byteOffset` must satisfy the alignment"
+                         " requirement of `type`."});
+  }
+
+  return calc;
+}
+
+void DoVertexAttribPointer(gl::GLContext& gl, const uint32_t index,
+                           const webgl::VertAttribPointerDesc& desc) {
+  if (desc.intFunc) {
+    gl.fVertexAttribIPointer(index, desc.channels, desc.type,
+                             desc.byteStrideOrZero,
+                             reinterpret_cast<const void*>(desc.byteOffset));
+  } else {
+    gl.fVertexAttribPointer(index, desc.channels, desc.type, desc.normalized,
+                            desc.byteStrideOrZero,
+                            reinterpret_cast<const void*>(desc.byteOffset));
+  }
+}
+
+void WebGLContext::VertexAttribPointer(
+    const uint32_t index, const webgl::VertAttribPointerDesc& desc) {
+  if (IsContextLost()) return;
+  if (!ValidateAttribIndex(*this, index)) return;
+
+  const auto res = CheckVertexAttribPointer(IsWebGL2(), desc);
+  if (res.isErr()) {
+    const auto& err = res.inspectErr();
+    GenerateError(err.type, "%s", err.info.c_str());
+    return;
+  }
+  const auto& calc = res.inspect();
+
+  ////
+
+  const auto& buffer = mBoundArrayBuffer;
+
+  mBoundVertexArray->AttribPointer(index, buffer, desc, calc);
+
+  const ScopedLazyBind lazyBind(gl, LOCAL_GL_ARRAY_BUFFER, buffer);
+  DoVertexAttribPointer(*gl, index, desc);
+}
+
+////////////////////////////////////////
+
+void WebGLContext::VertexAttribDivisor(GLuint index, GLuint divisor) {
+  const FuncScope funcScope(*this, "vertexAttribDivisor");
+  if (IsContextLost()) return;
+
+  if (!ValidateAttribIndex(*this, index)) return;
+
+  MOZ_ASSERT(mBoundVertexArray);
+  mBoundVertexArray->AttribDivisor(index, divisor);
+  gl->fVertexAttribDivisor(index, divisor);
+}
+
+}  // namespace mozilla