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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "WebGLQuery.h"
#include "gfxPrefs.h"
#include "nsThreadUtils.h"
namespace mozilla {
/*
* We fake ANY_SAMPLES_PASSED and ANY_SAMPLES_PASSED_CONSERVATIVE with
* SAMPLES_PASSED on desktop.
*
* OpenGL ES 3.0 spec 4.1.6:
* If the target of the query is ANY_SAMPLES_PASSED_CONSERVATIVE, an
* implementation may choose to use a less precise version of the test which
* can additionally set the samples-boolean state to TRUE in some other
* implementation-dependent cases.
*/
WebGLRefPtr<WebGLQuery>*
WebGLContext::ValidateQuerySlotByTarget(const char* funcName, GLenum target)
{
if (IsWebGL2()) {
switch (target) {
case LOCAL_GL_ANY_SAMPLES_PASSED:
case LOCAL_GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
return &mQuerySlot_SamplesPassed;
case LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
return &mQuerySlot_TFPrimsWritten;
default:
break;
}
}
if (IsExtensionEnabled(WebGLExtensionID::EXT_disjoint_timer_query)) {
switch (target) {
case LOCAL_GL_TIME_ELAPSED_EXT:
return &mQuerySlot_TimeElapsed;
default:
break;
}
}
ErrorInvalidEnum("%s: Bad `target`.", funcName);
return nullptr;
}
// -------------------------------------------------------------------------
// Query Objects
already_AddRefed<WebGLQuery>
WebGLContext::CreateQuery(const char* funcName)
{
if (!funcName) {
funcName = "createQuery";
}
if (IsContextLost())
return nullptr;
RefPtr<WebGLQuery> globj = new WebGLQuery(this);
return globj.forget();
}
void
WebGLContext::DeleteQuery(WebGLQuery* query, const char* funcName)
{
if (!funcName) {
funcName = "deleteQuery";
}
if (!ValidateDeleteObject(funcName, query))
return;
query->DeleteQuery();
}
bool
WebGLContext::IsQuery(const WebGLQuery* query, const char* funcName)
{
if (!funcName) {
funcName = "isQuery";
}
if (!ValidateIsObject(funcName, query))
return false;
return query->IsQuery();
}
void
WebGLContext::BeginQuery(GLenum target, WebGLQuery& query, const char* funcName)
{
if (!funcName) {
funcName = "beginQuery";
}
if (IsContextLost())
return;
if (!ValidateObject(funcName, query))
return;
const auto& slot = ValidateQuerySlotByTarget(funcName, target);
if (!slot)
return;
if (*slot)
return ErrorInvalidOperation("%s: Query target already active.", funcName);
////
query.BeginQuery(target, *slot);
}
void
WebGLContext::EndQuery(GLenum target, const char* funcName)
{
if (!funcName) {
funcName = "endQuery";
}
if (IsContextLost())
return;
const auto& slot = ValidateQuerySlotByTarget(funcName, target);
if (!slot)
return;
const auto& query = *slot;
if (!query)
return ErrorInvalidOperation("%s: Query target not active.", funcName);
query->EndQuery();
}
void
WebGLContext::GetQuery(JSContext* cx, GLenum target, GLenum pname,
JS::MutableHandleValue retval, const char* funcName)
{
if (!funcName) {
funcName = "getQuery";
}
retval.setNull();
if (IsContextLost())
return;
switch (pname) {
case LOCAL_GL_CURRENT_QUERY_EXT:
{
if (IsExtensionEnabled(WebGLExtensionID::EXT_disjoint_timer_query) &&
target == LOCAL_GL_TIMESTAMP)
{
// Doesn't seem illegal to ask about, but is always null.
// TIMESTAMP has no slot, so ValidateQuerySlotByTarget would generate
// INVALID_ENUM.
return;
}
const auto& slot = ValidateQuerySlotByTarget(funcName, target);
if (!slot || !*slot)
return;
const auto& query = *slot;
if (target != query->Target())
return;
JS::Rooted<JS::Value> v(cx);
dom::GetOrCreateDOMReflector(cx, slot->get(), &v);
retval.set(v);
}
return;
case LOCAL_GL_QUERY_COUNTER_BITS_EXT:
if (!IsExtensionEnabled(WebGLExtensionID::EXT_disjoint_timer_query))
break;
if (target != LOCAL_GL_TIME_ELAPSED_EXT &&
target != LOCAL_GL_TIMESTAMP_EXT)
{
ErrorInvalidEnum("%s: Bad pname for target.", funcName);
return;
}
{
GLint bits = 0;
gl->fGetQueryiv(target, pname, &bits);
if (!Has64BitTimestamps() && bits > 32) {
bits = 32;
}
retval.set(JS::Int32Value(bits));
}
return;
default:
break;
}
ErrorInvalidEnum("%s: Bad pname.", funcName);
return;
}
void
WebGLContext::GetQueryParameter(JSContext*, const WebGLQuery& query, GLenum pname,
JS::MutableHandleValue retval, const char* funcName)
{
if (!funcName) {
funcName = "getQueryParameter";
}
retval.setNull();
if (IsContextLost())
return;
if (!ValidateObject(funcName, query))
return;
query.GetQueryParameter(pname, retval);
}
} // namespace mozilla
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