forked from mirrors/gecko-dev
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGL2Context.h"
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#include "GLContext.h"
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#include "js/Array.h" // JS::NewArrayObject
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#include "mozilla/dom/WebGL2RenderingContextBinding.h"
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#include "mozilla/RefPtr.h"
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#include "WebGLBuffer.h"
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#include "WebGLContext.h"
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#include "WebGLProgram.h"
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#include "WebGLTransformFeedback.h"
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#include "WebGLVertexArray.h"
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namespace mozilla {
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// -------------------------------------------------------------------------
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// Uniform Buffer Objects and Transform Feedback Buffers
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Maybe<double> WebGL2Context::GetIndexedParameter(const GLenum pname,
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const uint32_t index) const {
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const FuncScope funcScope(*this, "getIndexedParameter");
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if (IsContextLost()) return {};
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if (IsExtensionEnabled(WebGLExtensionID::OES_draw_buffers_indexed)) {
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switch (pname) {
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case LOCAL_GL_BLEND_EQUATION_RGB:
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case LOCAL_GL_BLEND_EQUATION_ALPHA:
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case LOCAL_GL_BLEND_SRC_RGB:
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case LOCAL_GL_BLEND_SRC_ALPHA:
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case LOCAL_GL_BLEND_DST_RGB:
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case LOCAL_GL_BLEND_DST_ALPHA:
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case LOCAL_GL_COLOR_WRITEMASK: {
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const auto limit = MaxValidDrawBuffers();
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if (index >= limit) {
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ErrorInvalidValue("`index` (%u) must be < %s (%u)", index,
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"MAX_DRAW_BUFFERS", limit);
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return {};
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}
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std::array<GLint, 4> data = {};
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gl->fGetIntegeri_v(pname, index, data.data());
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auto val = data[0];
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if (pname == LOCAL_GL_COLOR_WRITEMASK) {
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val = (bool(data[0]) << 0 | bool(data[1]) << 1 | bool(data[2]) << 2 |
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bool(data[3]) << 3);
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}
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return Some(val);
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}
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}
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}
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const auto* bindings = &mIndexedUniformBufferBindings;
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const char* limitStr = "MAX_UNIFORM_BUFFER_BINDINGS";
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switch (pname) {
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case LOCAL_GL_UNIFORM_BUFFER_START:
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case LOCAL_GL_UNIFORM_BUFFER_SIZE:
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break;
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_START:
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
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bindings = &(mBoundTransformFeedback->mIndexedBindings);
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limitStr = "MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS";
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break;
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default:
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ErrorInvalidEnumArg("pname", pname);
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return {};
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}
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if (index >= bindings->size()) {
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ErrorInvalidValue("`index` must be < %s.", limitStr);
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return {};
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}
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const auto& binding = (*bindings)[index];
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switch (pname) {
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_START:
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case LOCAL_GL_UNIFORM_BUFFER_START:
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return Some(binding.mRangeStart);
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break;
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case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
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case LOCAL_GL_UNIFORM_BUFFER_SIZE:
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return Some(binding.mRangeSize);
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default:
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MOZ_CRASH("impossible");
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}
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}
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void WebGL2Context::UniformBlockBinding(WebGLProgram& program,
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GLuint uniformBlockIndex,
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GLuint uniformBlockBinding) {
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const FuncScope funcScope(*this, "uniformBlockBinding");
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if (IsContextLost()) return;
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if (!ValidateObject("program", program)) return;
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program.UniformBlockBinding(uniformBlockIndex, uniformBlockBinding);
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}
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} // namespace mozilla
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