skia2/tests/SRGBTest.cpp
Mike Klein b11ab578ad remove src/jumper
The distinction between SkJumper and SkRasterPipeline used
to be important, but it's no longer.  This CL moves everything
under src/jumper to the appropriate SkRasterPipeline file.

Change-Id: I1181fffafccb3dc4c4eb5f33b442c719ee370462
Reviewed-on: https://skia-review.googlesource.com/c/164627
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2018-10-24 11:15:58 +00:00

61 lines
1.6 KiB
C++

/*
* 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 "SkRasterPipeline.h"
#include "SkTypes.h"
#include "Test.h"
#include <math.h>
DEF_TEST(sk_pipeline_srgb_roundtrip, r) {
uint32_t reds[256];
for (int i = 0; i < 256; i++) {
reds[i] = i;
}
SkRasterPipeline_MemoryCtx ptr = { reds, 0 };
SkRasterPipeline_<256> p;
p.append(SkRasterPipeline::load_8888, &ptr);
p.append(SkRasterPipeline::from_srgb);
p.append(SkRasterPipeline::to_srgb);
p.append(SkRasterPipeline::store_8888, &ptr);
p.run(0,0,256,1);
for (int i = 0; i < 256; i++) {
if (reds[i] != (uint32_t)i) {
ERRORF(r, "%d doesn't round trip, %d", i, reds[i]);
}
}
}
DEF_TEST(sk_pipeline_srgb_edge_cases, r) {
// We need to run at least 4 pixels to make sure we hit all specializations.
float colors[4][4] = { {0,1,1,1}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0} };
auto& color = colors[0];
SkRasterPipeline_MemoryCtx dst = { &color, 0 };
SkSTArenaAlloc<256> alloc;
SkRasterPipeline p(&alloc);
p.append_constant_color(&alloc, color);
p.append(SkRasterPipeline::to_srgb);
p.append(SkRasterPipeline::store_f32, &dst);
p.run(0,0,4,1);
if (color[0] != 0.0f) {
ERRORF(r, "expected to_srgb() to map 0.0f to 0.0f, got %f", color[0]);
}
if (color[1] != 1.0f) {
float f = color[1];
uint32_t x;
memcpy(&x, &f, 4);
ERRORF(r, "expected to_srgb() to map 1.0f to 1.0f, got %f (%08x)", color[1], x);
}
}