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Added SDL_FlipSurface() to flip a surface vertically or horizontally

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Fixes https://github.com/libsdl-org/SDL/issues/8857
This commit is contained in:
Sam Lantinga 2024-01-20 06:31:37 -08:00
parent 2cd583ee13
commit 308906ba25
13 changed files with 184 additions and 21 deletions
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63
test/testautomation_surface.c
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@ -22,6 +22,15 @@
#include "testautomation_suites.h"
#include "testautomation_images.h"
#define CHECK_FUNC(FUNC, PARAMS) \
{ \
int result = FUNC PARAMS; \
if (result != 0) { \
SDLTest_AssertCheck(result == 0, "Validate result from %s, expected: 0, got: %i, %s", #FUNC, result, SDL_GetError()); \
} \
}
/* ================= Test Case Implementation ================== */
/* Shared test surface */
@ -791,6 +800,54 @@ static int surface_testOverflow(void *arg)
return TEST_COMPLETED;
}
static int surface_testFlip(void *arg)
{
SDL_Surface *surface;
Uint8 *pixels;
int offset;
const char *expectedError;
surface = SDL_CreateSurface(3, 3, SDL_PIXELFORMAT_RGB24);
SDLTest_AssertCheck(surface != NULL, "SDL_CreateSurface()");
SDL_ClearError();
expectedError = "Parameter 'surface' is invalid";
SDL_FlipSurface(NULL, SDL_FLIP_HORIZONTAL);
SDLTest_AssertCheck(SDL_strcmp(SDL_GetError(), expectedError) == 0,
"Expected \"%s\", got \"%s\"", expectedError, SDL_GetError());
SDL_ClearError();
expectedError = "Parameter 'flip' is invalid";
SDL_FlipSurface(surface, SDL_FLIP_NONE);
SDLTest_AssertCheck(SDL_strcmp(SDL_GetError(), expectedError) == 0,
"Expected \"%s\", got \"%s\"", expectedError, SDL_GetError());
pixels = (Uint8 *)surface->pixels;
*pixels = 0xFF;
offset = 0;
SDLTest_AssertPass("Call to SDL_FlipSurface(surface, SDL_FLIP_VERTICAL)");
CHECK_FUNC(SDL_FlipSurface, (surface, SDL_FLIP_VERTICAL));
SDLTest_AssertCheck(pixels[offset] == 0x00,
"Expected pixels[%d] == 0x00 got 0x%.2X", offset, pixels[offset]);
offset = 2 * surface->pitch;
SDLTest_AssertCheck(pixels[offset] == 0xFF,
"Expected pixels[%d] == 0xFF got 0x%.2X", offset, pixels[offset]);
SDLTest_AssertPass("Call to SDL_FlipSurface(surface, SDL_FLIP_HORIZONTAL)");
CHECK_FUNC(SDL_FlipSurface, (surface, SDL_FLIP_HORIZONTAL));
SDLTest_AssertCheck(pixels[offset] == 0x00,
"Expected pixels[%d] == 0x00 got 0x%.2X", offset, pixels[offset]);
offset += (surface->w - 1) * surface->format->BytesPerPixel;
SDLTest_AssertCheck(pixels[offset] == 0xFF,
"Expected pixels[%d] == 0xFF got 0x%.2X", offset, pixels[offset]);
SDL_DestroySurface(surface);
return TEST_COMPLETED;
}
/* ================= Test References ================== */
/* Surface test cases */
@ -849,11 +906,15 @@ static const SDLTest_TestCaseReference surfaceTestOverflow = {
surface_testOverflow, "surface_testOverflow", "Test overflow detection.", TEST_ENABLED
};
static const SDLTest_TestCaseReference surfaceTestFlip = {
surface_testFlip, "surface_testFlip", "Test surface flipping.", TEST_ENABLED
};
/* Sequence of Surface test cases */
static const SDLTest_TestCaseReference *surfaceTests[] = {
&surfaceTest1, &surfaceTest2, &surfaceTest3, &surfaceTest4, &surfaceTest5,
&surfaceTest6, &surfaceTest7, &surfaceTest8, &surfaceTest9, &surfaceTest10,
&surfaceTest11, &surfaceTest12, &surfaceTestOverflow, NULL
&surfaceTest11, &surfaceTest12, &surfaceTestOverflow, &surfaceTestFlip, NULL
};
/* Surface test suite (global) */