summaryrefslogtreecommitdiffstats
path: root/dom/canvas/WebGL2ContextMRTs.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'dom/canvas/WebGL2ContextMRTs.cpp')
-rw-r--r--dom/canvas/WebGL2ContextMRTs.cpp164
1 files changed, 164 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2ContextMRTs.cpp b/dom/canvas/WebGL2ContextMRTs.cpp
new file mode 100644
index 0000000000..544f8e024a
--- /dev/null
+++ b/dom/canvas/WebGL2ContextMRTs.cpp
@@ -0,0 +1,164 @@
+/* -*- 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 "GLContext.h"
+#include "WebGLFramebuffer.h"
+
+namespace mozilla {
+
+bool WebGL2Context::ValidateClearBuffer(const GLenum buffer,
+ const GLint drawBuffer,
+ const webgl::AttribBaseType funcType) {
+ GLint maxDrawBuffer;
+ switch (buffer) {
+ case LOCAL_GL_COLOR:
+ maxDrawBuffer = Limits().maxColorDrawBuffers - 1;
+ break;
+
+ case LOCAL_GL_DEPTH:
+ case LOCAL_GL_STENCIL:
+ maxDrawBuffer = 0;
+ break;
+
+ case LOCAL_GL_DEPTH_STENCIL:
+ maxDrawBuffer = 0;
+ break;
+
+ default:
+ ErrorInvalidEnumInfo("buffer", buffer);
+ return false;
+ }
+
+ if (drawBuffer < 0 || drawBuffer > maxDrawBuffer) {
+ ErrorInvalidValue(
+ "Invalid drawbuffer %d. This buffer only supports"
+ " `drawbuffer` values between 0 and %u.",
+ drawBuffer, maxDrawBuffer);
+ return false;
+ }
+
+ ////
+
+ if (!BindCurFBForDraw()) return false;
+
+ const auto& fb = mBoundDrawFramebuffer;
+ if (fb) {
+ if (!fb->ValidateClearBufferType(buffer, drawBuffer, funcType))
+ return false;
+ } else if (buffer == LOCAL_GL_COLOR) {
+ if (drawBuffer != 0) return true;
+
+ if (mDefaultFB_DrawBuffer0 == LOCAL_GL_NONE) return true;
+
+ if (funcType != webgl::AttribBaseType::Float) {
+ ErrorInvalidOperation(
+ "For default framebuffer, COLOR is always of type"
+ " FLOAT.");
+ return false;
+ }
+ }
+
+ return true;
+}
+
+////
+
+void WebGL2Context::ClearBufferTv(GLenum buffer, GLint drawBuffer,
+ const webgl::TypedQuad& data) {
+ const FuncScope funcScope(*this, "clearBufferu?[fi]v");
+ if (IsContextLost()) return;
+
+ switch (data.type) {
+ case webgl::AttribBaseType::Boolean:
+ MOZ_ASSERT(false);
+ return;
+
+ case webgl::AttribBaseType::Float:
+ if (buffer != LOCAL_GL_COLOR && buffer != LOCAL_GL_DEPTH) {
+ ErrorInvalidEnum("`buffer` must be COLOR or DEPTH.");
+ return;
+ }
+ break;
+
+ case webgl::AttribBaseType::Int:
+ if (buffer != LOCAL_GL_COLOR && buffer != LOCAL_GL_STENCIL) {
+ ErrorInvalidEnum("`buffer` must be COLOR or STENCIL.");
+ return;
+ }
+ break;
+
+ case webgl::AttribBaseType::Uint:
+ if (buffer != LOCAL_GL_COLOR) {
+ ErrorInvalidEnum("`buffer` must be COLOR.");
+ return;
+ }
+ break;
+ }
+
+ if (!ValidateClearBuffer(buffer, drawBuffer, data.type)) {
+ return;
+ }
+
+ if (!mBoundDrawFramebuffer && buffer == LOCAL_GL_DEPTH && mNeedsFakeNoDepth) {
+ return;
+ }
+ if (!mBoundDrawFramebuffer && buffer == LOCAL_GL_STENCIL &&
+ mNeedsFakeNoStencil) {
+ return;
+ }
+
+ ScopedDrawCallWrapper wrapper(*this);
+ switch (data.type) {
+ case webgl::AttribBaseType::Boolean:
+ MOZ_ASSERT(false);
+ return;
+
+ case webgl::AttribBaseType::Float:
+ gl->fClearBufferfv(buffer, drawBuffer,
+ reinterpret_cast<const float*>(data.data.data()));
+ break;
+
+ case webgl::AttribBaseType::Int:
+ gl->fClearBufferiv(buffer, drawBuffer,
+ reinterpret_cast<const int32_t*>(data.data.data()));
+ break;
+
+ case webgl::AttribBaseType::Uint:
+ gl->fClearBufferuiv(buffer, drawBuffer,
+ reinterpret_cast<const uint32_t*>(data.data.data()));
+ break;
+ }
+}
+
+////
+
+void WebGL2Context::ClearBufferfi(GLenum buffer, GLint drawBuffer,
+ GLfloat depth, GLint stencil) {
+ const FuncScope funcScope(*this, "clearBufferfi");
+ if (IsContextLost()) return;
+
+ if (buffer != LOCAL_GL_DEPTH_STENCIL)
+ return ErrorInvalidEnum("`buffer` must be DEPTH_STENCIL.");
+
+ const auto ignored = webgl::AttribBaseType::Float;
+ if (!ValidateClearBuffer(buffer, drawBuffer, ignored)) return;
+
+ auto driverDepth = depth;
+ auto driverStencil = stencil;
+ if (!mBoundDrawFramebuffer) {
+ if (mNeedsFakeNoDepth) {
+ driverDepth = 1.0f;
+ } else if (mNeedsFakeNoStencil) {
+ driverStencil = 0;
+ }
+ }
+
+ ScopedDrawCallWrapper wrapper(*this);
+ gl->fClearBufferfi(buffer, drawBuffer, driverDepth, driverStencil);
+}
+
+} // namespace mozilla