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/* -*- 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
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