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205 lines
6.5 KiB
205 lines
6.5 KiB
/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkHalf.h"
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#include "SkRasterPipeline.h"
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#include "SkTo.h"
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#include "Test.h"
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DEF_TEST(SkRasterPipeline, r) {
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// Build and run a simple pipeline to exercise SkRasterPipeline,
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// drawing 50% transparent blue over opaque red in half-floats.
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uint64_t red = 0x3c00000000003c00ull,
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blue = 0x3800380000000000ull,
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result;
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SkRasterPipeline_MemoryCtx load_s_ctx = { &blue, 0 },
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load_d_ctx = { &red, 0 },
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store_ctx = { &result, 0 };
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::load_f16, &load_s_ctx);
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p.append(SkRasterPipeline::load_f16_dst, &load_d_ctx);
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p.append(SkRasterPipeline::srcover);
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p.append(SkRasterPipeline::store_f16, &store_ctx);
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p.run(0,0,1,1);
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// We should see half-intensity magenta.
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REPORTER_ASSERT(r, ((result >> 0) & 0xffff) == 0x3800);
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REPORTER_ASSERT(r, ((result >> 16) & 0xffff) == 0x0000);
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REPORTER_ASSERT(r, ((result >> 32) & 0xffff) == 0x3800);
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REPORTER_ASSERT(r, ((result >> 48) & 0xffff) == 0x3c00);
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}
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DEF_TEST(SkRasterPipeline_empty, r) {
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// No asserts... just a test that this is safe to run.
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SkRasterPipeline_<256> p;
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p.run(0,0,20,1);
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}
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DEF_TEST(SkRasterPipeline_nonsense, r) {
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// No asserts... just a test that this is safe to run and terminates.
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// srcover() calls st->next(); this makes sure we've always got something there to call.
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::srcover);
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p.run(0,0,20,1);
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}
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DEF_TEST(SkRasterPipeline_JIT, r) {
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// This tests a couple odd corners that a JIT backend can stumble over.
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uint32_t buf[72] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
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13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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SkRasterPipeline_MemoryCtx src = { buf + 0, 0 },
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dst = { buf + 36, 0 };
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// Copy buf[x] to buf[x+36] for x in [15,35).
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline:: load_8888, &src);
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p.append(SkRasterPipeline::store_8888, &dst);
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p.run(15,0, 20,1);
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for (int i = 0; i < 36; i++) {
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if (i < 15 || i == 35) {
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REPORTER_ASSERT(r, buf[i+36] == 0);
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} else {
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REPORTER_ASSERT(r, buf[i+36] == (uint32_t)(i - 11));
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}
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}
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}
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static uint16_t h(float f) {
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// Remember, a float is 1-8-23 (sign-exponent-mantissa) with 127 exponent bias.
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uint32_t sem;
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memcpy(&sem, &f, sizeof(sem));
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uint32_t s = sem & 0x80000000,
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em = sem ^ s;
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// Convert to 1-5-10 half with 15 bias, flushing denorm halfs (including zero) to zero.
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auto denorm = (int32_t)em < 0x38800000; // I32 comparison is often quicker, and always safe
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// here.
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return denorm ? SkTo<uint16_t>(0)
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: SkTo<uint16_t>((s>>16) + (em>>13) - ((127-15)<<10));
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}
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DEF_TEST(SkRasterPipeline_tail, r) {
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{
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float data[][4] = {
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{00, 01, 02, 03},
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{10, 11, 12, 13},
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{20, 21, 22, 23},
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{30, 31, 32, 33},
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};
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float buffer[4][4];
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SkRasterPipeline_MemoryCtx src = { &data[0][0], 0 },
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dst = { &buffer[0][0], 0 };
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for (unsigned i = 1; i <= 4; i++) {
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memset(buffer, 0xff, sizeof(buffer));
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::load_f32, &src);
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p.append(SkRasterPipeline::store_f32, &dst);
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p.run(0,0, i,1);
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for (unsigned j = 0; j < i; j++) {
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for (unsigned k = 0; k < 4; k++) {
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if (buffer[j][k] != data[j][k]) {
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ERRORF(r, "(%u, %u) - a: %g r: %g\n", j, k, data[j][k], buffer[j][k]);
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}
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}
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}
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for (int j = i; j < 4; j++) {
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for (auto f : buffer[j]) {
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REPORTER_ASSERT(r, SkScalarIsNaN(f));
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}
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}
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}
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}
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{
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alignas(8) uint16_t data[][4] = {
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{h(00), h(01), h(02), h(03)},
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{h(10), h(11), h(12), h(13)},
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{h(20), h(21), h(22), h(23)},
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{h(30), h(31), h(32), h(33)},
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};
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alignas(8) uint16_t buffer[4][4];
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SkRasterPipeline_MemoryCtx src = { &data[0][0], 0 },
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dst = { &buffer[0][0], 0 };
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for (unsigned i = 1; i <= 4; i++) {
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memset(buffer, 0xff, sizeof(buffer));
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::load_f16, &src);
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p.append(SkRasterPipeline::store_f16, &dst);
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p.run(0,0, i,1);
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for (unsigned j = 0; j < i; j++) {
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REPORTER_ASSERT(r,
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!memcmp(&data[j][0], &buffer[j][0], sizeof(buffer[j])));
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}
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for (int j = i; j < 4; j++) {
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for (auto f : buffer[j]) {
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REPORTER_ASSERT(r, f == 0xffff);
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}
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}
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}
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}
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}
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DEF_TEST(SkRasterPipeline_lowp, r) {
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uint32_t rgba[64];
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for (int i = 0; i < 64; i++) {
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rgba[i] = (4*i+0) << 0
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| (4*i+1) << 8
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| (4*i+2) << 16
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| (4*i+3) << 24;
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}
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SkRasterPipeline_MemoryCtx ptr = { rgba, 0 };
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::load_8888, &ptr);
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p.append(SkRasterPipeline::swap_rb);
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p.append(SkRasterPipeline::store_8888, &ptr);
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p.run(0,0,64,1);
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for (int i = 0; i < 64; i++) {
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uint32_t want = (4*i+0) << 16
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| (4*i+1) << 8
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| (4*i+2) << 0
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| (4*i+3) << 24;
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if (rgba[i] != want) {
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ERRORF(r, "got %08x, want %08x\n", rgba[i], want);
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}
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}
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}
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DEF_TEST(SkRasterPipeline_lowp_clamp01, r) {
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// This may seem like a funny pipeline to create,
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// but it certainly shouldn't crash when you run it.
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uint32_t rgba = 0xff00ff00;
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SkRasterPipeline_MemoryCtx ptr = { &rgba, 0 };
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SkRasterPipeline_<256> p;
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p.append(SkRasterPipeline::load_8888, &ptr);
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p.append(SkRasterPipeline::swap_rb);
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p.append(SkRasterPipeline::clamp_0);
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p.append(SkRasterPipeline::clamp_1);
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p.append(SkRasterPipeline::store_8888, &ptr);
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p.run(0,0,1,1);
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}
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