skia2/tests/SkRasterPipelineTest.cpp

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/*
* Copyright 2016 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 "SkHalf.h"
#include "SkRasterPipeline.h"
DEF_TEST(SkRasterPipeline, r) {
// Build and run a simple pipeline to exercise SkRasterPipeline,
// drawing 50% transparent blue over opaque red in half-floats.
uint64_t red = 0x3c00000000003c00ull,
blue = 0x3800380000000000ull,
result;
void* load_s_ctx = &blue;
void* load_d_ctx = &red;
void* store_ctx = &result;
SkRasterPipeline p;
p.append(SkRasterPipeline::load_f16, &load_s_ctx);
p.append(SkRasterPipeline::move_src_dst);
p.append(SkRasterPipeline::load_f16, &load_d_ctx);
p.append(SkRasterPipeline::swap);
p.append(SkRasterPipeline::srcover);
p.append(SkRasterPipeline::store_f16, &store_ctx);
p.run(0,1);
// We should see half-intensity magenta.
REPORTER_ASSERT(r, ((result >> 0) & 0xffff) == 0x3800);
REPORTER_ASSERT(r, ((result >> 16) & 0xffff) == 0x0000);
REPORTER_ASSERT(r, ((result >> 32) & 0xffff) == 0x3800);
REPORTER_ASSERT(r, ((result >> 48) & 0xffff) == 0x3c00);
}
DEF_TEST(SkRasterPipeline_empty, r) {
// No asserts... just a test that this is safe to run.
SkRasterPipeline p;
p.run(0,20);
}
DEF_TEST(SkRasterPipeline_nonsense, r) {
// No asserts... just a test that this is safe to run and terminates.
// srcover() calls st->next(); this makes sure we've always got something there to call.
SkRasterPipeline p;
p.append(SkRasterPipeline::srcover);
p.run(0,20);
}
DEF_TEST(SkRasterPipeline_JIT, r) {
// This tests a couple odd corners that a JIT backend can stumble over.
uint32_t buf[72] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
const uint32_t* src = buf + 0;
uint32_t* dst = buf + 36;
// Copy buf[x] to buf[x+36] for x in [15,35).
SkRasterPipeline p;
p.append(SkRasterPipeline:: load_8888, &src);
p.append(SkRasterPipeline::store_8888, &dst);
p.run(15, 20);
for (int i = 0; i < 36; i++) {
if (i < 15 || i == 35) {
REPORTER_ASSERT(r, dst[i] == 0);
} else {
REPORTER_ASSERT(r, dst[i] == (uint32_t)(i - 11));
}
}
}