8762e332e3
With linear blending turned off some textures were still created as sRGB textures instead of linear textures. Multi-stop gradients were not behaving properly on devices with no support for float textures. Gradients are now always interpolated in linear space even if linear blending is off. New functions to always force sRGB->linear->sRGB conversions. Test: Manual testing Bug: 29940137 Change-Id: Ie2f84ee2a65fd85570e88af813e841e0e625df6c
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "Extensions.h"
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#include "Debug.h"
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#include "Properties.h"
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#include "utils/StringUtils.h"
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <utils/Log.h>
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namespace android {
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namespace uirenderer {
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// Debug
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#if DEBUG_EXTENSIONS
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#define EXT_LOGD(...) ALOGD(__VA_ARGS__)
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#else
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#define EXT_LOGD(...)
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#endif
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Extensions::Extensions() {
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auto extensions = StringUtils::split((const char*) glGetString(GL_EXTENSIONS));
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mHasNPot = extensions.has("GL_OES_texture_npot");
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mHasFramebufferFetch = extensions.has("GL_NV_shader_framebuffer_fetch");
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mHasDiscardFramebuffer = extensions.has("GL_EXT_discard_framebuffer");
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mHasDebugMarker = extensions.has("GL_EXT_debug_marker");
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mHas1BitStencil = extensions.has("GL_OES_stencil1");
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mHas4BitStencil = extensions.has("GL_OES_stencil4");
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mHasUnpackSubImage = extensions.has("GL_EXT_unpack_subimage");
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#ifdef ANDROID_ENABLE_LINEAR_BLENDING
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mHasSRGB = mVersionMajor >= 3 || extensions.has("GL_EXT_sRGB");
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mHasSRGBWriteControl = extensions.has("GL_EXT_sRGB_write_control");
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// If linear blending is enabled, the device must have (ES3.0 or EXT_sRGB)
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// and EXT_sRGB_write_control
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LOG_ALWAYS_FATAL_IF(!mHasSRGB, "Linear blending requires ES 3.0 or EXT_sRGB");
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LOG_ALWAYS_FATAL_IF(!mHasSRGBWriteControl, "Linear blending requires EXT_sRGB_write_control");
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#else
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mHasSRGB = false;
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mHasSRGBWriteControl = false;
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#endif
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const char* version = (const char*) glGetString(GL_VERSION);
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// Section 6.1.5 of the OpenGL ES specification indicates the GL version
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// string strictly follows this format:
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//
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// OpenGL<space>ES<space><version number><space><vendor-specific information>
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//
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// In addition section 6.1.5 describes the version number thusly:
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//
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// "The version number is either of the form major number.minor number or
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// major number.minor number.release number, where the numbers all have one
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// or more digits. The release number and vendor specific information are
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// optional."
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if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) != 2) {
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// If we cannot parse the version number, assume OpenGL ES 2.0
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mVersionMajor = 2;
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mVersionMinor = 0;
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}
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}
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}; // namespace uirenderer
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}; // namespace android
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