blob: b0631d0b3c788c9d9871d28e30742140007a9d8b [file] [log] [blame]
* Copyright 2015 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "Test.h"
#include "TestUtils.h"
#include "GrContext.h"
#include "GrContextFactory.h"
#include "GrContextPriv.h"
#include "GrRenderTargetContext.h"
#include "GrShaderCaps.h"
#include "GrTest.h"
#include "GrTextureContext.h"
#include "gl/GLTestContext.h"
#include "gl/GrGLGpu.h"
#include "gl/GrGLUtil.h"
using sk_gpu_test::GLTestContext;
static void cleanup(GLTestContext* glctx0, GrGLuint texID0, GLTestContext* glctx1,
sk_sp<GrContext> grctx1, GrBackendTexture* backendTex1,
GrEGLImage image1) {
if (glctx1) {
if (grctx1) {
if (backendTex1 && backendTex1->isValid()) {
GrGLGpu* gpu1 = static_cast<GrGLGpu*>(grctx1->contextPriv().getGpu());
if (GR_EGL_NO_IMAGE != image1) {
if (texID0) {
GR_GL_CALL(glctx0->gl(), DeleteTextures(1, &texID0));
GrContext* context0 = ctxInfo.grContext();
sk_gpu_test::GLTestContext* glCtx0 = ctxInfo.glContext();
// Try to create a second GL context and then check if the contexts have necessary
// extensions to run this test.
if (kGLES_GrGLStandard != glCtx0->gl()->fStandard) {
GrGLGpu* gpu0 = static_cast<GrGLGpu*>(context0->contextPriv().getGpu());
if (!gpu0->glCaps().shaderCaps()->externalTextureSupport()) {
std::unique_ptr<GLTestContext> glCtx1 = glCtx0->makeNew();
if (!glCtx1) {
sk_sp<GrContext> context1 = GrContext::MakeGL(sk_ref_sp(glCtx1->gl()));
GrBackendTexture backendTexture1;
GrEGLImage image = GR_EGL_NO_IMAGE;
GrGLTextureInfo externalTexture;
externalTexture.fID = 0;
if (!context1) {
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
if (!glCtx1->gl()->hasExtension("EGL_KHR_image") ||
!glCtx1->gl()->hasExtension("EGL_KHR_gl_texture_2D_image")) {
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
///////////////////////////////// CONTEXT 1 ///////////////////////////////////
// Use GL Context 1 to create a texture unknown to GrContext.
GrGpu* gpu1 = context1->contextPriv().getGpu();
static const int kSize = 100;
backendTexture1 =
gpu1->createTestingOnlyBackendTexture(nullptr, kSize, kSize, kRGBA_8888_GrPixelConfig,
false, GrMipMapped::kNo);
if (!backendTexture1.isValid() || !gpu1->isTestingOnlyBackendTexture(backendTexture1)) {
ERRORF(reporter, "Error creating texture for EGL Image");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
const GrGLTextureInfo* texInfo = backendTexture1.getGLTextureInfo();
if (GR_GL_TEXTURE_2D != texInfo->fTarget) {
ERRORF(reporter, "Expected backend texture to be 2D");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
// Wrap the texture in an EGLImage
image = glCtx1->texture2DToEGLImage(texInfo->fID);
if (GR_EGL_NO_IMAGE == image) {
ERRORF(reporter, "Error creating EGL Image from texture");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
// Since we are dealing with two different GL contexts here, we need to call finish so that the
// clearing of the texture that happens in createTextingOnlyBackendTexture occurs before we call
// TexSubImage below on the other context. Otherwise, it is possible the calls get reordered and
// the clearing overwrites the TexSubImage writes.
GR_GL_CALL(glCtx1->gl(), Finish());
// Populate the texture using GL context 1. Important to use TexSubImage as TexImage orphans
// the EGL image. Also, this must be done after creating the EGLImage as the texture
// contents may not be preserved when the image is created.
SkAutoTMalloc<uint32_t> pixels(kSize * kSize);
for (int i = 0; i < kSize*kSize; ++i) {
pixels.get()[i] = 0xDDAABBCC;
GR_GL_CALL(glCtx1->gl(), ActiveTexture(GR_GL_TEXTURE0));
GR_GL_CALL(glCtx1->gl(), BindTexture(texInfo->fTarget, texInfo->fID));
GR_GL_CALL(glCtx1->gl(), TexSubImage2D(texInfo->fTarget, 0, 0, 0, kSize, kSize,
GR_GL_RGBA, GR_GL_UNSIGNED_BYTE, pixels.get()));
GR_GL_CALL(glCtx1->gl(), Finish());
// We've been making direct GL calls in GL context 1, let GrContext 1 know its internal
// state is invalid.
///////////////////////////////// CONTEXT 0 ///////////////////////////////////
// Make a new texture ID in GL Context 0 from the EGL Image
externalTexture.fTarget = GR_GL_TEXTURE_EXTERNAL;
externalTexture.fID = glCtx0->eglImageToExternalTexture(image);
if (0 == externalTexture.fID) {
ERRORF(reporter, "Error converting EGL Image back to texture");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
// Wrap this texture ID in a GrTexture
GrBackendTexture backendTex(kSize, kSize, kRGBA_8888_GrPixelConfig, externalTexture);
// TODO: If I make this TopLeft origin to match resolve_origin calls for kDefault, this test
// fails on the Nexus5. Why?
sk_sp<GrTextureContext> surfaceContext = context0->contextPriv().makeBackendTextureContext(
backendTex, kBottomLeft_GrSurfaceOrigin, nullptr);
if (!surfaceContext) {
ERRORF(reporter, "Error wrapping external texture in GrSurfaceContext.");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);
// Should not be able to wrap as a RT
sk_sp<GrRenderTargetContext> temp =
backendTex, kBottomLeft_GrSurfaceOrigin, 1, nullptr);
if (temp) {
ERRORF(reporter, "Should not be able to wrap an EXTERNAL texture as a RT.");
test_read_pixels(reporter, surfaceContext.get(), pixels.get(), "EGLImageTest-read");
// We should not be able to write to a EXTERNAL texture
test_write_pixels(reporter, surfaceContext.get(), false, "EGLImageTest-write");
// Only test RT-config
// TODO: why do we always need to draw to copy from an external texture?
test_copy_from_surface(reporter, context0, surfaceContext->asSurfaceProxy(),
pixels.get(), true, "EGLImageTest-copy");
cleanup(glCtx0, externalTexture.fID, glCtx1.get(), context1, &backendTexture1, image);