tests/GrSurfaceTest.cpp

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "SkTypes.h"

#if SK_SUPPORT_GPU

#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrGpu.h"
#include "GrRenderTarget.h"
#include "GrResourceProvider.h"
#include "GrTest.h"
#include "GrTexture.h"
#include "GrSurfacePriv.h"
#include "Test.h"

// Tests that GrSurface::asTexture(), GrSurface::asRenderTarget(), and static upcasting of texture
// and render targets to GrSurface all work as expected.
DEF_GPUTEST_FOR_NULLGL_CONTEXT(GrSurface, reporter, ctxInfo) {
    GrContext* context = ctxInfo.grContext();
    GrSurfaceDesc desc;
    desc.fConfig = kRGBA_8888_GrPixelConfig;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = 256;
    desc.fHeight = 256;
    desc.fSampleCnt = 0;
    sk_sp<GrSurface> texRT1 = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);

    REPORTER_ASSERT(reporter, texRT1.get() == texRT1->asRenderTarget());
    REPORTER_ASSERT(reporter, texRT1.get() == texRT1->asTexture());
    REPORTER_ASSERT(reporter, static_cast<GrSurface*>(texRT1->asRenderTarget()) ==
                    texRT1->asTexture());
    REPORTER_ASSERT(reporter, texRT1->asRenderTarget() ==
                    static_cast<GrSurface*>(texRT1->asTexture()));
    REPORTER_ASSERT(reporter, static_cast<GrSurface*>(texRT1->asRenderTarget()) ==
                    static_cast<GrSurface*>(texRT1->asTexture()));

    desc.fFlags = kNone_GrSurfaceFlags;
    sk_sp<GrTexture> tex1 = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);
    REPORTER_ASSERT(reporter, nullptr == tex1->asRenderTarget());
    REPORTER_ASSERT(reporter, tex1.get() == tex1->asTexture());
    REPORTER_ASSERT(reporter, static_cast<GrSurface*>(tex1.get()) == tex1->asTexture());

    GrBackendObject backendTexHandle = context->getGpu()->createTestingOnlyBackendTexture(
        nullptr, 256, 256, kRGBA_8888_GrPixelConfig);
    GrBackendTexture backendTex = GrTest::CreateBackendTexture(context->contextPriv().getBackend(),
                                                               256,
                                                               256,
                                                               kRGBA_8888_GrPixelConfig,
                                                               backendTexHandle);

    sk_sp<GrSurface> texRT2 = context->resourceProvider()->wrapBackendTexture(
        backendTex, kTopLeft_GrSurfaceOrigin, kRenderTarget_GrBackendTextureFlag, 0,
        kBorrow_GrWrapOwnership);

    REPORTER_ASSERT(reporter, texRT2.get() == texRT2->asRenderTarget());
    REPORTER_ASSERT(reporter, texRT2.get() == texRT2->asTexture());
    REPORTER_ASSERT(reporter, static_cast<GrSurface*>(texRT2->asRenderTarget()) ==
                    texRT2->asTexture());
    REPORTER_ASSERT(reporter, texRT2->asRenderTarget() ==
                    static_cast<GrSurface*>(texRT2->asTexture()));
    REPORTER_ASSERT(reporter, static_cast<GrSurface*>(texRT2->asRenderTarget()) ==
                    static_cast<GrSurface*>(texRT2->asTexture()));

    context->getGpu()->deleteTestingOnlyBackendTexture(backendTexHandle);
}

#if 0
// This test checks that the isConfigTexturable and isConfigRenderable are
// consistent with createTexture's result.
DEF_GPUTEST_FOR_ALL_CONTEXTS(GrSurfaceRenderability, reporter, ctxInfo) {
    GrContext* context = ctxInfo.grContext();
    const GrCaps* caps = context->caps();

    GrPixelConfig configs[] = {
        kUnknown_GrPixelConfig,
        kAlpha_8_GrPixelConfig,
        kGray_8_GrPixelConfig,
        kRGB_565_GrPixelConfig,
        kRGBA_4444_GrPixelConfig,
        kRGBA_8888_GrPixelConfig,
        kBGRA_8888_GrPixelConfig,
        kSRGBA_8888_GrPixelConfig,
        kSBGRA_8888_GrPixelConfig,
        kRGBA_8888_sint_GrPixelConfig,
        kETC1_GrPixelConfig,
        kRGBA_float_GrPixelConfig,
        kRG_float_GrPixelConfig,
        kAlpha_half_GrPixelConfig,
        kRGBA_half_GrPixelConfig,
    };
    SkASSERT(kGrPixelConfigCnt == SK_ARRAY_COUNT(configs));

    GrSurfaceDesc desc;
    desc.fWidth = 64;
    desc.fHeight = 64;

    for (GrPixelConfig config : configs) {
        for (GrSurfaceOrigin origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) {
            desc.fFlags = kNone_GrSurfaceFlags;
            desc.fOrigin = origin;
            desc.fSampleCnt = 0;
            desc.fConfig = config;

            sk_sp<GrSurface> tex = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);
            REPORTER_ASSERT(reporter, SkToBool(tex.get()) == caps->isConfigTexturable(desc.fConfig,
                                                                                      desc.fOrigin));

            desc.fFlags = kRenderTarget_GrSurfaceFlag;
            tex = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);
            REPORTER_ASSERT(reporter, SkToBool(tex.get()) == caps->isConfigRenderable(config, false));

            desc.fSampleCnt = 4;
            tex = context->resourceProvider()->createTexture(desc, SkBudgeted::kNo);
            REPORTER_ASSERT(reporter, SkToBool(tex.get()) == caps->isConfigRenderable(config, true));
        }
    }
}
#endif

#endif