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SDL/test/testautomation_render.c
Sam Lantinga 198caa54a1 Added SDL_RenderTextureTiled()
2024-07-20 18:21:19 -07:00

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/**
* Original code: automated SDL platform test written by Edgar Simo "bobbens"
* Extended and extensively updated by aschiffler at ferzkopp dot net
*/
#include <SDL3/SDL.h>
#include <SDL3/SDL_test.h>
#include "testautomation_images.h"
#include "testautomation_suites.h"
/* ================= Test Case Implementation ================== */
#define TESTRENDER_SCREEN_W 80
#define TESTRENDER_SCREEN_H 60
#define RENDER_COMPARE_FORMAT SDL_PIXELFORMAT_ARGB8888
#define RENDER_COLOR_CLEAR 0xFF000000
#define RENDER_COLOR_GREEN 0xFF00FF00
#define ALLOWABLE_ERROR_OPAQUE 0
#define ALLOWABLE_ERROR_BLENDED 0
#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 window and renderer */
static SDL_Window *window = NULL;
static SDL_Renderer *renderer = NULL;
/* Prototypes for helper functions */
static int clearScreen(void);
static void compare(SDL_Surface *reference, int allowable_error);
static void compare2x(SDL_Surface *reference, int allowable_error);
static SDL_Texture *loadTestFace(void);
static int hasDrawColor(void);
static int isSupported(int code);
/**
* Create software renderer for tests
*/
static void InitCreateRenderer(void *arg)
{
int width = 320, height = 240;
const char *renderer_name = NULL;
renderer = NULL;
window = SDL_CreateWindow("render_testCreateRenderer", width, height, 0);
SDLTest_AssertPass("SDL_CreateWindow()");
SDLTest_AssertCheck(window != NULL, "Check SDL_CreateWindow result");
if (window == NULL) {
return;
}
renderer = SDL_CreateRenderer(window, renderer_name);
SDLTest_AssertPass("SDL_CreateRenderer()");
SDLTest_AssertCheck(renderer != NULL, "Check SDL_CreateRenderer result: %s", renderer != NULL ? "success" : SDL_GetError());
if (renderer == NULL) {
SDL_DestroyWindow(window);
return;
}
}
/**
* Destroy renderer for tests
*/
static void CleanupDestroyRenderer(void *arg)
{
if (renderer) {
SDL_DestroyRenderer(renderer);
renderer = NULL;
SDLTest_AssertPass("SDL_DestroyRenderer()");
}
if (window) {
SDL_DestroyWindow(window);
window = NULL;
SDLTest_AssertPass("SDL_DestroyWindow");
}
}
/**
* Tests call to SDL_GetNumRenderDrivers
*
* \sa SDL_GetNumRenderDrivers
*/
static int render_testGetNumRenderDrivers(void *arg)
{
int n;
n = SDL_GetNumRenderDrivers();
SDLTest_AssertCheck(n >= 1, "Number of renderers >= 1, reported as %i", n);
return TEST_COMPLETED;
}
/**
* Tests the SDL primitives for rendering.
*
* \sa SDL_SetRenderDrawColor
* \sa SDL_RenderFillRect
* \sa SDL_RenderLine
*
*/
static int render_testPrimitives(void *arg)
{
int ret;
int x, y;
SDL_FRect rect;
SDL_Surface *referenceSurface = NULL;
int checkFailCount1;
int checkFailCount2;
/* Clear surface. */
clearScreen();
/* Need drawcolor or just skip test. */
SDLTest_AssertCheck(hasDrawColor(), "hasDrawColor");
/* Draw a rectangle. */
rect.x = 40.0f;
rect.y = 0.0f;
rect.w = 40.0f;
rect.h = 80.0f;
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 13, 73, 200, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, &rect))
/* Draw a rectangle. */
rect.x = 10.0f;
rect.y = 10.0f;
rect.w = 60.0f;
rect.h = 40.0f;
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 200, 0, 100, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, &rect))
/* Draw some points like so:
* X.X.X.X..
* .X.X.X.X.
* X.X.X.X.. */
checkFailCount1 = 0;
checkFailCount2 = 0;
for (y = 0; y < 3; y++) {
for (x = y % 2; x < TESTRENDER_SCREEN_W; x += 2) {
ret = SDL_SetRenderDrawColor(renderer, (Uint8)(x * y), (Uint8)(x * y / 2), (Uint8)(x * y / 3), SDL_ALPHA_OPAQUE);
if (ret != 0) {
checkFailCount1++;
}
ret = SDL_RenderPoint(renderer, (float)x, (float)y);
if (ret != 0) {
checkFailCount2++;
}
}
}
SDLTest_AssertCheck(checkFailCount1 == 0, "Validate results from calls to SDL_SetRenderDrawColor, expected: 0, got: %i", checkFailCount1);
SDLTest_AssertCheck(checkFailCount2 == 0, "Validate results from calls to SDL_RenderPoint, expected: 0, got: %i", checkFailCount2);
/* Draw some lines. */
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderLine, (renderer, 0.0f, 30.0f, TESTRENDER_SCREEN_W, 30.0f))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 55, 55, 5, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderLine, (renderer, 40.0f, 30.0f, 40.0f, 60.0f))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 5, 105, 105, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderLine, (renderer, 0.0f, 0.0f, 29.0f, 29.0f))
CHECK_FUNC(SDL_RenderLine, (renderer, 29.0f, 30.0f, 0.0f, 59.0f))
CHECK_FUNC(SDL_RenderLine, (renderer, 79.0f, 0.0f, 50.0f, 29.0f))
CHECK_FUNC(SDL_RenderLine, (renderer, 79.0f, 59.0f, 50.0f, 30.0f))
/* See if it's the same. */
referenceSurface = SDLTest_ImagePrimitives();
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
/* Clean up. */
SDL_DestroySurface(referenceSurface);
referenceSurface = NULL;
return TEST_COMPLETED;
}
/**
* Tests the SDL primitives for rendering within a viewport.
*
* \sa SDL_SetRenderDrawColor
* \sa SDL_RenderFillRect
* \sa SDL_RenderLine
*
*/
static int render_testPrimitivesWithViewport(void *arg)
{
SDL_Rect viewport;
SDL_Surface *surface;
/* Clear surface. */
clearScreen();
viewport.x = 2;
viewport.y = 2;
viewport.w = 2;
viewport.h = 2;
CHECK_FUNC(SDL_SetRenderViewport, (renderer, &viewport));
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 255, 255, 255, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderLine, (renderer, 0.0f, 0.0f, 1.0f, 1.0f));
viewport.x = 3;
viewport.y = 3;
viewport.w = 1;
viewport.h = 1;
CHECK_FUNC(SDL_SetRenderViewport, (renderer, &viewport));
surface = SDL_RenderReadPixels(renderer, NULL);
if (surface) {
Uint8 r, g, b, a;
CHECK_FUNC(SDL_ReadSurfacePixel, (surface, 0, 0, &r, &g, &b, &a));
SDLTest_AssertCheck(r == 0xFF && g == 0xFF && b == 0xFF && a == 0xFF, "Validate diagonal line drawing with viewport, expected 0xFFFFFFFF, got 0x%.2x%.2x%.2x%.2x", r, g, b, a);
SDL_DestroySurface(surface);
} else {
SDLTest_AssertCheck(surface != NULL, "Validate result from SDL_RenderReadPixels, got NULL, %s", SDL_GetError());
}
return TEST_COMPLETED;
}
/**
* Tests some blitting routines.
*
* \sa SDL_RenderTexture
* \sa SDL_DestroyTexture
*/
static int render_testBlit(void *arg)
{
int ret;
SDL_FRect rect;
SDL_Texture *tface;
SDL_Surface *referenceSurface = NULL;
float tw, th;
float i, j, ni, nj;
int checkFailCount1;
/* Clear surface. */
clearScreen();
/* Need drawcolor or just skip test. */
SDLTest_AssertCheck(hasDrawColor(), "hasDrawColor)");
/* Create face surface. */
tface = loadTestFace();
SDLTest_AssertCheck(tface != NULL, "Verify loadTestFace() result");
if (tface == NULL) {
return TEST_ABORTED;
}
/* Constant values. */
CHECK_FUNC(SDL_GetTextureSize, (tface, &tw, &th))
rect.w = tw;
rect.h = th;
ni = TESTRENDER_SCREEN_W - tw;
nj = TESTRENDER_SCREEN_H - th;
/* Loop blit. */
checkFailCount1 = 0;
for (j = 0; j <= nj; j += 4) {
for (i = 0; i <= ni; i += 4) {
/* Blitting. */
rect.x = i;
rect.y = j;
ret = SDL_RenderTexture(renderer, tface, NULL, &rect);
if (ret != 0) {
checkFailCount1++;
}
}
}
SDLTest_AssertCheck(checkFailCount1 == 0, "Validate results from calls to SDL_RenderTexture, expected: 0, got: %i", checkFailCount1);
/* See if it's the same */
referenceSurface = SDLTest_ImageBlit();
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
/* Clean up. */
SDL_DestroyTexture(tface);
SDL_DestroySurface(referenceSurface);
referenceSurface = NULL;
return TEST_COMPLETED;
}
/**
* Tests tiled blitting routines.
*/
static int render_testBlitTiled(void *arg)
{
int ret;
SDL_FRect rect;
SDL_Texture *tface;
SDL_Surface *referenceSurface = NULL;
SDL_Surface *referenceSurface2x = NULL;
/* Create face surface. */
tface = loadTestFace();
SDLTest_AssertCheck(tface != NULL, "Verify loadTestFace() result");
if (tface == NULL) {
return TEST_ABORTED;
}
SDL_SetTextureScaleMode(tface, SDL_SCALEMODE_NEAREST); /* So 2x scaling is pixel perfect */
/* Tiled blit - 1.0 scale */
{
/* Clear surface. */
clearScreen();
/* Tiled blit. */
rect.x = 0.0f;
rect.y = 0.0f;
rect.w = (float)TESTRENDER_SCREEN_W;
rect.h = (float)TESTRENDER_SCREEN_H;
ret = SDL_RenderTextureTiled(renderer, tface, NULL, 1.0f, &rect);
SDLTest_AssertCheck(ret == 0, "Validate results from call to SDL_RenderTextureTiled, expected: 0, got: %i", ret);
/* See if it's the same */
referenceSurface = SDLTest_ImageBlitTiled();
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
}
/* Tiled blit - 2.0 scale */
{
/* Clear surface. */
clearScreen();
/* Tiled blit. */
rect.x = 0.0f;
rect.y = 0.0f;
rect.w = (float)TESTRENDER_SCREEN_W * 2;
rect.h = (float)TESTRENDER_SCREEN_H * 2;
ret = SDL_RenderTextureTiled(renderer, tface, NULL, 2.0f, &rect);
SDLTest_AssertCheck(ret == 0, "Validate results from call to SDL_RenderTextureTiled, expected: 0, got: %i", ret);
/* See if it's the same */
referenceSurface2x = SDL_CreateSurface(referenceSurface->w * 2, referenceSurface->h * 2, referenceSurface->format);
SDL_BlitSurfaceScaled(referenceSurface, NULL, referenceSurface2x, NULL, SDL_SCALEMODE_NEAREST);
SDLTest_AssertCheck(ret == 0, "Validate results from call to SDL_BlitSurfaceScaled, expected: 0, got: %i", ret);
compare2x(referenceSurface2x, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
}
/* Clean up. */
SDL_DestroyTexture(tface);
SDL_DestroySurface(referenceSurface);
SDL_DestroySurface(referenceSurface2x);
referenceSurface = NULL;
return TEST_COMPLETED;
}
/**
* Blits doing color tests.
*
* \sa SDL_SetTextureColorMod
* \sa SDL_RenderTexture
* \sa SDL_DestroyTexture
*/
static int render_testBlitColor(void *arg)
{
int ret;
SDL_FRect rect;
SDL_Texture *tface;
SDL_Surface *referenceSurface = NULL;
float tw, th;
int i, j, ni, nj;
int checkFailCount1;
int checkFailCount2;
/* Clear surface. */
clearScreen();
/* Create face surface. */
tface = loadTestFace();
SDLTest_AssertCheck(tface != NULL, "Verify loadTestFace() result");
if (tface == NULL) {
return TEST_ABORTED;
}
/* Constant values. */
CHECK_FUNC(SDL_GetTextureSize, (tface, &tw, &th))
rect.w = tw;
rect.h = th;
ni = TESTRENDER_SCREEN_W - (int)tw;
nj = TESTRENDER_SCREEN_H - (int)th;
/* Test blitting with color mod. */
checkFailCount1 = 0;
checkFailCount2 = 0;
for (j = 0; j <= nj; j += 4) {
for (i = 0; i <= ni; i += 4) {
/* Set color mod. */
ret = SDL_SetTextureColorMod(tface, (Uint8)((255 / nj) * j), (Uint8)((255 / ni) * i), (Uint8)((255 / nj) * j));
if (ret != 0) {
checkFailCount1++;
}
/* Blitting. */
rect.x = (float)i;
rect.y = (float)j;
ret = SDL_RenderTexture(renderer, tface, NULL, &rect);
if (ret != 0) {
checkFailCount2++;
}
}
}
SDLTest_AssertCheck(checkFailCount1 == 0, "Validate results from calls to SDL_SetTextureColorMod, expected: 0, got: %i", checkFailCount1);
SDLTest_AssertCheck(checkFailCount2 == 0, "Validate results from calls to SDL_RenderTexture, expected: 0, got: %i", checkFailCount2);
/* See if it's the same. */
referenceSurface = SDLTest_ImageBlitColor();
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
/* Clean up. */
SDL_DestroyTexture(tface);
SDL_DestroySurface(referenceSurface);
referenceSurface = NULL;
return TEST_COMPLETED;
}
typedef enum TestRenderOperation
{
TEST_RENDER_POINT,
TEST_RENDER_LINE,
TEST_RENDER_RECT,
TEST_RENDER_COPY_XRGB,
TEST_RENDER_COPY_ARGB,
} TestRenderOperation;
/**
* Helper that tests a specific operation and blend mode, -1 for color mod, -2 for alpha mod
*/
static void testBlendModeOperation(TestRenderOperation op, int mode, SDL_PixelFormat dst_format)
{
/* Allow up to 2 delta from theoretical value to account for rounding error.
* We allow 2 rounding errors because the software renderer breaks drawing operations into alpha multiplication and a separate blend operation.
*/
const int MAXIMUM_ERROR = 2;
int ret;
SDL_Texture *src = NULL;
SDL_Texture *dst;
SDL_Surface *result;
Uint8 srcR = 10, srcG = 128, srcB = 240, srcA = 100;
Uint8 dstR = 128, dstG = 128, dstB = 128, dstA = 128;
Uint8 expectedR, expectedG, expectedB, expectedA;
Uint8 actualR, actualG, actualB, actualA;
int deltaR, deltaG, deltaB, deltaA;
const char *operation = "UNKNOWN";
const char *mode_name = "UNKNOWN";
/* Create dst surface */
dst = SDL_CreateTexture(renderer, dst_format, SDL_TEXTUREACCESS_TARGET, 3, 3);
SDLTest_AssertCheck(dst != NULL, "Verify dst surface is not NULL");
if (dst == NULL) {
return;
}
if (SDL_ISPIXELFORMAT_ALPHA(dst_format)) {
SDL_BlendMode blendMode = SDL_BLENDMODE_NONE;
ret = SDL_GetTextureBlendMode(dst, &blendMode);
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_GetTextureBlendMode(), expected: 0, got: %i", ret);
SDLTest_AssertCheck(blendMode == SDL_BLENDMODE_BLEND, "Verify alpha texture blend mode, expected %d, got %" SDL_PRIu32, SDL_BLENDMODE_BLEND, blendMode);
}
/* Set as render target */
SDL_SetRenderTarget(renderer, dst);
/* Clear surface. */
if (!SDL_ISPIXELFORMAT_ALPHA(dst_format)) {
dstA = 255;
}
ret = SDL_SetRenderDrawColor(renderer, dstR, dstG, dstB, dstA);
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetRenderDrawColor(), expected: 0, got: %i", ret);
ret = SDL_RenderClear(renderer);
SDLTest_AssertPass("Call to SDL_RenderClear()");
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_RenderClear, expected: 0, got: %i", ret);
if (op == TEST_RENDER_COPY_XRGB || op == TEST_RENDER_COPY_ARGB) {
Uint8 pixels[4];
/* Create src surface */
src = SDL_CreateTexture(renderer, op == TEST_RENDER_COPY_XRGB ? SDL_PIXELFORMAT_RGBX32 : SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, 1, 1);
SDLTest_AssertCheck(src != NULL, "Verify src surface is not NULL");
if (src == NULL) {
return;
}
/* Clear surface. */
if (op == TEST_RENDER_COPY_XRGB) {
srcA = 255;
}
pixels[0] = srcR;
pixels[1] = srcG;
pixels[2] = srcB;
pixels[3] = srcA;
SDL_UpdateTexture(src, NULL, pixels, sizeof(pixels));
/* Set blend mode. */
if (mode >= 0) {
ret = SDL_SetTextureBlendMode(src, (SDL_BlendMode)mode);
SDLTest_AssertPass("Call to SDL_SetTextureBlendMode()");
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetTextureBlendMode(..., %i), expected: 0, got: %i", mode, ret);
} else {
ret = SDL_SetTextureBlendMode(src, SDL_BLENDMODE_BLEND);
SDLTest_AssertPass("Call to SDL_SetTextureBlendMode()");
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetTextureBlendMode(..., %i), expected: 0, got: %i", mode, ret);
}
} else {
/* Set draw color */
ret = SDL_SetRenderDrawColor(renderer, srcR, srcG, srcB, srcA);
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetRenderDrawColor(), expected: 0, got: %i", ret);
/* Set blend mode. */
if (mode >= 0) {
ret = SDL_SetRenderDrawBlendMode(renderer, (SDL_BlendMode)mode);
SDLTest_AssertPass("Call to SDL_SetRenderDrawBlendMode()");
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetRenderDrawBlendMode(..., %i), expected: 0, got: %i", mode, ret);
} else {
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
SDLTest_AssertPass("Call to SDL_SetRenderDrawBlendMode()");
SDLTest_AssertCheck(ret == 0, "Verify result from SDL_SetRenderDrawBlendMode(..., %i), expected: 0, got: %i", mode, ret);
}
}
/* Test blend mode. */
#define FLOAT(X) ((float)X / 255.0f)
switch (mode) {
case -1:
mode_name = "color modulation";
ret = SDL_SetTextureColorMod(src, srcR, srcG, srcB);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_SetTextureColorMod, expected: 0, got: %i", ret);
expectedR = (Uint8)SDL_roundf(SDL_clamp((FLOAT(srcR) * FLOAT(srcR)) * FLOAT(srcA) + FLOAT(dstR) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp((FLOAT(srcG) * FLOAT(srcG)) * FLOAT(srcA) + FLOAT(dstG) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp((FLOAT(srcB) * FLOAT(srcB)) * FLOAT(srcA) + FLOAT(dstB) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedA = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcA) + FLOAT(dstA) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
break;
case -2:
mode_name = "alpha modulation";
ret = SDL_SetTextureAlphaMod(src, srcA);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_SetTextureAlphaMod, expected: 0, got: %i", ret);
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) * (FLOAT(srcA) * FLOAT(srcA)) + FLOAT(dstR) * (1.0f - (FLOAT(srcA) * FLOAT(srcA))), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) * (FLOAT(srcA) * FLOAT(srcA)) + FLOAT(dstG) * (1.0f - (FLOAT(srcA) * FLOAT(srcA))), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) * (FLOAT(srcA) * FLOAT(srcA)) + FLOAT(dstB) * (1.0f - (FLOAT(srcA) * FLOAT(srcA))), 0.0f, 1.0f) * 255.0f);
expectedA = (Uint8)SDL_roundf(SDL_clamp((FLOAT(srcA) * FLOAT(srcA)) + FLOAT(dstA) * (1.0f - (FLOAT(srcA) * FLOAT(srcA))), 0.0f, 1.0f) * 255.0f);
break;
case SDL_BLENDMODE_NONE:
mode_name = "SDL_BLENDMODE_NONE";
expectedR = srcR;
expectedG = srcG;
expectedB = srcB;
expectedA = SDL_ISPIXELFORMAT_ALPHA(dst_format) ? srcA : 255;
break;
case SDL_BLENDMODE_BLEND:
mode_name = "SDL_BLENDMODE_BLEND";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) * FLOAT(srcA) + FLOAT(dstR) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) * FLOAT(srcA) + FLOAT(dstG) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) * FLOAT(srcA) + FLOAT(dstB) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedA = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcA) + FLOAT(dstA) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
break;
case SDL_BLENDMODE_BLEND_PREMULTIPLIED:
mode_name = "SDL_BLENDMODE_BLEND_PREMULTIPLIED";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) + FLOAT(dstR) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) + FLOAT(dstG) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) + FLOAT(dstB) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedA = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcA) + FLOAT(dstA) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
break;
case SDL_BLENDMODE_ADD:
mode_name = "SDL_BLENDMODE_ADD";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) * FLOAT(srcA) + FLOAT(dstR), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) * FLOAT(srcA) + FLOAT(dstG), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) * FLOAT(srcA) + FLOAT(dstB), 0.0f, 1.0f) * 255.0f);
expectedA = dstA;
break;
case SDL_BLENDMODE_ADD_PREMULTIPLIED:
mode_name = "SDL_BLENDMODE_ADD_PREMULTIPLIED";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) + FLOAT(dstR), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) + FLOAT(dstG), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) + FLOAT(dstB), 0.0f, 1.0f) * 255.0f);
expectedA = dstA;
break;
case SDL_BLENDMODE_MOD:
mode_name = "SDL_BLENDMODE_MOD";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) * FLOAT(dstR), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) * FLOAT(dstG), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) * FLOAT(dstB), 0.0f, 1.0f) * 255.0f);
expectedA = dstA;
break;
case SDL_BLENDMODE_MUL:
mode_name = "SDL_BLENDMODE_MUL";
expectedR = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcR) * FLOAT(dstR) + FLOAT(dstR) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedG = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcG) * FLOAT(dstG) + FLOAT(dstG) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedB = (Uint8)SDL_roundf(SDL_clamp(FLOAT(srcB) * FLOAT(dstB) + FLOAT(dstB) * (1.0f - FLOAT(srcA)), 0.0f, 1.0f) * 255.0f);
expectedA = dstA;
break;
default:
SDLTest_LogError("Invalid blending mode: %d", mode);
return;
}
switch (op) {
case TEST_RENDER_POINT:
operation = "render point";
ret = SDL_RenderPoint(renderer, 0.0f, 0.0f);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_RenderPoint, expected: 0, got: %i", ret);
break;
case TEST_RENDER_LINE:
operation = "render line";
ret = SDL_RenderLine(renderer, 0.0f, 0.0f, 2.0f, 2.0f);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_RenderLine, expected: 0, got: %i", ret);
break;
case TEST_RENDER_RECT:
operation = "render rect";
ret = SDL_RenderFillRect(renderer, NULL);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_RenderFillRect, expected: 0, got: %i", ret);
break;
case TEST_RENDER_COPY_XRGB:
case TEST_RENDER_COPY_ARGB:
operation = (op == TEST_RENDER_COPY_XRGB) ? "render XRGB" : "render ARGB";
ret = SDL_RenderTexture(renderer, src, NULL, NULL);
SDLTest_AssertCheck(ret == 0, "Validate results from calls to SDL_RenderTexture, expected: 0, got: %i", ret);
break;
default:
SDLTest_LogError("Invalid blending operation: %d", op);
return;
}
result = SDL_RenderReadPixels(renderer, NULL);
SDL_ReadSurfacePixel(result, 0, 0, &actualR, &actualG, &actualB, &actualA);
deltaR = SDL_abs((int)actualR - expectedR);
deltaG = SDL_abs((int)actualG - expectedG);
deltaB = SDL_abs((int)actualB - expectedB);
deltaA = SDL_abs((int)actualA - expectedA);
SDLTest_AssertCheck(
deltaR <= MAXIMUM_ERROR &&
deltaG <= MAXIMUM_ERROR &&
deltaB <= MAXIMUM_ERROR &&
deltaA <= MAXIMUM_ERROR,
"Checking %s %s operation results, expected %d,%d,%d,%d, got %d,%d,%d,%d",
operation, mode_name,
expectedR, expectedG, expectedB, expectedA, actualR, actualG, actualB, actualA);
/* Clean up */
SDL_DestroySurface(result);
SDL_DestroyTexture(src);
SDL_DestroyTexture(dst);
}
static void testBlendMode(int mode)
{
const TestRenderOperation operations[] = {
TEST_RENDER_POINT,
TEST_RENDER_LINE,
TEST_RENDER_RECT,
TEST_RENDER_COPY_XRGB,
TEST_RENDER_COPY_ARGB
};
const SDL_PixelFormat dst_formats[] = {
SDL_PIXELFORMAT_XRGB8888, SDL_PIXELFORMAT_ARGB8888
};
int i, j;
for (i = 0; i < SDL_arraysize(operations); ++i) {
for (j = 0; j < SDL_arraysize(dst_formats); ++j) {
TestRenderOperation op = operations[i];
if (mode < 0) {
if (op != TEST_RENDER_COPY_XRGB && op != TEST_RENDER_COPY_ARGB) {
/* Unsupported mode for this operation */
continue;
}
}
testBlendModeOperation(op, mode, dst_formats[j]);
}
}
}
/**
* Tests render operations with blend modes
*/
static int render_testBlendModes(void *arg)
{
testBlendMode(-1);
testBlendMode(-2);
testBlendMode(SDL_BLENDMODE_NONE);
testBlendMode(SDL_BLENDMODE_BLEND);
testBlendMode(SDL_BLENDMODE_BLEND_PREMULTIPLIED);
testBlendMode(SDL_BLENDMODE_ADD);
testBlendMode(SDL_BLENDMODE_ADD_PREMULTIPLIED);
testBlendMode(SDL_BLENDMODE_MOD);
testBlendMode(SDL_BLENDMODE_MUL);
return TEST_COMPLETED;
}
/**
* Test viewport
*/
static int render_testViewport(void *arg)
{
SDL_Surface *referenceSurface;
SDL_Rect viewport;
viewport.x = TESTRENDER_SCREEN_W / 3;
viewport.y = TESTRENDER_SCREEN_H / 3;
viewport.w = TESTRENDER_SCREEN_W / 2;
viewport.h = TESTRENDER_SCREEN_H / 2;
/* Create expected result */
referenceSurface = SDL_CreateSurface(TESTRENDER_SCREEN_W, TESTRENDER_SCREEN_H, RENDER_COMPARE_FORMAT);
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_CLEAR))
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, &viewport, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the viewport and do a fill operation */
CHECK_FUNC(SDL_SetRenderViewport, (renderer, &viewport))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, NULL))
CHECK_FUNC(SDL_SetRenderViewport, (renderer, NULL))
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/*
* Verify that clear ignores the viewport
*/
/* Create expected result */
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the viewport and do a clear operation */
CHECK_FUNC(SDL_SetRenderViewport, (renderer, &viewport))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderClear, (renderer))
CHECK_FUNC(SDL_SetRenderViewport, (renderer, NULL))
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
SDL_DestroySurface(referenceSurface);
return TEST_COMPLETED;
}
/**
* Test clip rect
*/
static int render_testClipRect(void *arg)
{
SDL_Surface *referenceSurface;
SDL_Rect cliprect;
cliprect.x = TESTRENDER_SCREEN_W / 3;
cliprect.y = TESTRENDER_SCREEN_H / 3;
cliprect.w = TESTRENDER_SCREEN_W / 2;
cliprect.h = TESTRENDER_SCREEN_H / 2;
/* Create expected result */
referenceSurface = SDL_CreateSurface(TESTRENDER_SCREEN_W, TESTRENDER_SCREEN_H, RENDER_COMPARE_FORMAT);
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_CLEAR))
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, &cliprect, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the cliprect and do a fill operation */
CHECK_FUNC(SDL_SetRenderClipRect, (renderer, &cliprect))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, NULL))
CHECK_FUNC(SDL_SetRenderClipRect, (renderer, NULL))
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/*
* Verify that clear ignores the cliprect
*/
/* Create expected result */
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the cliprect and do a clear operation */
CHECK_FUNC(SDL_SetRenderClipRect, (renderer, &cliprect))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderClear, (renderer))
CHECK_FUNC(SDL_SetRenderClipRect, (renderer, NULL))
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
SDL_DestroySurface(referenceSurface);
return TEST_COMPLETED;
}
/**
* Test logical size
*/
static int render_testLogicalSize(void *arg)
{
SDL_Surface *referenceSurface;
SDL_Rect viewport;
SDL_FRect rect;
int w, h;
int set_w, set_h;
SDL_RendererLogicalPresentation set_presentation_mode;
SDL_ScaleMode set_scale_mode;
SDL_FRect set_rect;
const int factor = 2;
viewport.x = ((TESTRENDER_SCREEN_W / 4) / factor) * factor;
viewport.y = ((TESTRENDER_SCREEN_H / 4) / factor) * factor;
viewport.w = ((TESTRENDER_SCREEN_W / 2) / factor) * factor;
viewport.h = ((TESTRENDER_SCREEN_H / 2) / factor) * factor;
/* Create expected result */
referenceSurface = SDL_CreateSurface(TESTRENDER_SCREEN_W, TESTRENDER_SCREEN_H, RENDER_COMPARE_FORMAT);
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_CLEAR))
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, &viewport, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the logical size and do a fill operation */
CHECK_FUNC(SDL_GetCurrentRenderOutputSize, (renderer, &w, &h))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer, w / factor, h / factor,
SDL_LOGICAL_PRESENTATION_LETTERBOX,
SDL_SCALEMODE_NEAREST))
CHECK_FUNC(SDL_GetRenderLogicalPresentation, (renderer, &set_w, &set_h, &set_presentation_mode, &set_scale_mode))
SDLTest_AssertCheck(
set_w == (w / factor) &&
set_h == (h / factor) &&
set_presentation_mode == SDL_LOGICAL_PRESENTATION_LETTERBOX &&
set_scale_mode == SDL_SCALEMODE_NEAREST,
"Validate result from SDL_GetRenderLogicalPresentation, got %d, %d, %d, %d", set_w, set_h, set_presentation_mode, set_scale_mode);
CHECK_FUNC(SDL_GetRenderLogicalPresentationRect, (renderer, &set_rect))
SDLTest_AssertCheck(
set_rect.x == 0.0f &&
set_rect.y == 0.0f &&
set_rect.w == 320.0f &&
set_rect.h == 240.0f,
"Validate result from SDL_GetRenderLogicalPresentationRect, got {%g, %g, %gx%g}", set_rect.x, set_rect.y, set_rect.w, set_rect.h);
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
rect.x = (float)viewport.x / factor;
rect.y = (float)viewport.y / factor;
rect.w = (float)viewport.w / factor;
rect.h = (float)viewport.h / factor;
CHECK_FUNC(SDL_RenderFillRect, (renderer, &rect))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer, 0, 0,
SDL_LOGICAL_PRESENTATION_DISABLED,
SDL_SCALEMODE_NEAREST))
CHECK_FUNC(SDL_GetRenderLogicalPresentation, (renderer, &set_w, &set_h, &set_presentation_mode, &set_scale_mode))
SDLTest_AssertCheck(
set_w == 0 &&
set_h == 0 &&
set_presentation_mode == SDL_LOGICAL_PRESENTATION_DISABLED &&
set_scale_mode == SDL_SCALEMODE_NEAREST,
"Validate result from SDL_GetRenderLogicalPresentation, got %d, %d, %d, %d", set_w, set_h, set_presentation_mode, set_scale_mode);
CHECK_FUNC(SDL_GetRenderLogicalPresentationRect, (renderer, &set_rect))
SDLTest_AssertCheck(
set_rect.x == 0.0f &&
set_rect.y == 0.0f &&
set_rect.w == 320.0f &&
set_rect.h == 240.0f,
"Validate result from SDL_GetRenderLogicalPresentationRect, got {%g, %g, %gx%g}", set_rect.x, set_rect.y, set_rect.w, set_rect.h);
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Clear surface. */
clearScreen();
/* Set the logical size and viewport and do a fill operation */
CHECK_FUNC(SDL_GetCurrentRenderOutputSize, (renderer, &w, &h))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer, w / factor, h / factor,
SDL_LOGICAL_PRESENTATION_LETTERBOX,
SDL_SCALEMODE_NEAREST))
viewport.x = (TESTRENDER_SCREEN_W / 4) / factor;
viewport.y = (TESTRENDER_SCREEN_H / 4) / factor;
viewport.w = (TESTRENDER_SCREEN_W / 2) / factor;
viewport.h = (TESTRENDER_SCREEN_H / 2) / factor;
CHECK_FUNC(SDL_SetRenderViewport, (renderer, &viewport))
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, NULL))
CHECK_FUNC(SDL_SetRenderViewport, (renderer, NULL))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer, 0, 0,
SDL_LOGICAL_PRESENTATION_DISABLED,
SDL_SCALEMODE_NEAREST))
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/*
* Test a logical size that isn't the same aspect ratio as the window
*/
viewport.x = (TESTRENDER_SCREEN_W / 4);
viewport.y = 0;
viewport.w = TESTRENDER_SCREEN_W;
viewport.h = TESTRENDER_SCREEN_H;
/* Create expected result */
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, NULL, RENDER_COLOR_CLEAR))
CHECK_FUNC(SDL_FillSurfaceRect, (referenceSurface, &viewport, RENDER_COLOR_GREEN))
/* Clear surface. */
clearScreen();
/* Set the logical size and do a fill operation */
CHECK_FUNC(SDL_GetCurrentRenderOutputSize, (renderer, &w, &h))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer,
w - 2 * (TESTRENDER_SCREEN_W / 4),
h,
SDL_LOGICAL_PRESENTATION_LETTERBOX,
SDL_SCALEMODE_LINEAR))
CHECK_FUNC(SDL_GetRenderLogicalPresentation, (renderer, &set_w, &set_h, &set_presentation_mode, &set_scale_mode))
SDLTest_AssertCheck(
set_w == w - 2 * (TESTRENDER_SCREEN_W / 4) &&
set_h == h &&
set_presentation_mode == SDL_LOGICAL_PRESENTATION_LETTERBOX &&
set_scale_mode == SDL_SCALEMODE_LINEAR,
"Validate result from SDL_GetRenderLogicalPresentation, got %d, %d, %d, %d", set_w, set_h, set_presentation_mode, set_scale_mode);
CHECK_FUNC(SDL_GetRenderLogicalPresentationRect, (renderer, &set_rect))
SDLTest_AssertCheck(
set_rect.x == 20.0f &&
set_rect.y == 0.0f &&
set_rect.w == 280.0f &&
set_rect.h == 240.0f,
"Validate result from SDL_GetRenderLogicalPresentationRect, got {%g, %g, %gx%g}", set_rect.x, set_rect.y, set_rect.w, set_rect.h);
CHECK_FUNC(SDL_SetRenderDrawColor, (renderer, 0, 255, 0, SDL_ALPHA_OPAQUE))
CHECK_FUNC(SDL_RenderFillRect, (renderer, NULL))
CHECK_FUNC(SDL_SetRenderLogicalPresentation, (renderer, 0, 0,
SDL_LOGICAL_PRESENTATION_DISABLED,
SDL_SCALEMODE_NEAREST))
CHECK_FUNC(SDL_GetRenderLogicalPresentation, (renderer, &set_w, &set_h, &set_presentation_mode, &set_scale_mode))
SDLTest_AssertCheck(
set_w == 0 &&
set_h == 0 &&
set_presentation_mode == SDL_LOGICAL_PRESENTATION_DISABLED &&
set_scale_mode == SDL_SCALEMODE_NEAREST,
"Validate result from SDL_GetRenderLogicalPresentation, got %d, %d, %d, %d", set_w, set_h, set_presentation_mode, set_scale_mode);
CHECK_FUNC(SDL_GetRenderLogicalPresentationRect, (renderer, &set_rect))
SDLTest_AssertCheck(
set_rect.x == 0.0f &&
set_rect.y == 0.0f &&
set_rect.w == 320.0f &&
set_rect.h == 240.0f,
"Validate result from SDL_GetRenderLogicalPresentationRect, got {%g, %g, %gx%g}", set_rect.x, set_rect.y, set_rect.w, set_rect.h);
/* Check to see if final image matches. */
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Clear surface. */
clearScreen();
/* Make current */
SDL_RenderPresent(renderer);
SDL_DestroySurface(referenceSurface);
return TEST_COMPLETED;
}
/* Helper functions */
/**
* Checks to see if functionality is supported. Helper function.
*/
static int
isSupported(int code)
{
return code == 0;
}
/**
* Test to see if we can vary the draw color. Helper function.
*
* \sa SDL_SetRenderDrawColor
* \sa SDL_GetRenderDrawColor
*/
static int
hasDrawColor(void)
{
int ret, fail;
Uint8 r, g, b, a;
fail = 0;
/* Set color. */
ret = SDL_SetRenderDrawColor(renderer, 100, 100, 100, 100);
if (!isSupported(ret)) {
fail = 1;
}
ret = SDL_GetRenderDrawColor(renderer, &r, &g, &b, &a);
if (!isSupported(ret)) {
fail = 1;
}
/* Restore natural. */
ret = SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
if (!isSupported(ret)) {
fail = 1;
}
/* Something failed, consider not available. */
if (fail) {
return 0;
}
/* Not set properly, consider failed. */
else if ((r != 100) || (g != 100) || (b != 100) || (a != 100)) {
return 0;
}
return 1;
}
/**
* Loads the test image 'Face' as texture. Helper function.
*
* \sa SDL_CreateTextureFromSurface
*/
static SDL_Texture *
loadTestFace(void)
{
SDL_Surface *face;
SDL_Texture *tface;
face = SDLTest_ImageFace();
if (!face) {
return NULL;
}
tface = SDL_CreateTextureFromSurface(renderer, face);
if (!tface) {
SDLTest_LogError("SDL_CreateTextureFromSurface() failed with error: %s", SDL_GetError());
}
SDL_DestroySurface(face);
return tface;
}
/**
* Compares screen pixels with image pixels. Helper function.
*
* \param referenceSurface Image to compare against.
* \param allowable_error allowed difference from the reference image
*
* \sa SDL_RenderReadPixels
* \sa SDL_CreateSurfaceFrom
* \sa SDL_DestroySurface
*/
static void compare(SDL_Surface *referenceSurface, int allowable_error)
{
int ret;
SDL_Rect rect;
SDL_Surface *surface, *testSurface;
/* Explicitly specify the rect in case the window isn't the expected size... */
rect.x = 0;
rect.y = 0;
rect.w = TESTRENDER_SCREEN_W;
rect.h = TESTRENDER_SCREEN_H;
surface = SDL_RenderReadPixels(renderer, &rect);
if (!surface) {
SDLTest_AssertCheck(surface != NULL, "Validate result from SDL_RenderReadPixels, got NULL, %s", SDL_GetError());
return;
}
testSurface = SDL_ConvertSurface(surface, RENDER_COMPARE_FORMAT);
SDL_DestroySurface(surface);
if (!testSurface) {
SDLTest_AssertCheck(testSurface != NULL, "Validate result from SDL_ConvertSurface, got NULL, %s", SDL_GetError());
return;
}
/* Compare surface. */
ret = SDLTest_CompareSurfaces(testSurface, referenceSurface, allowable_error);
SDLTest_AssertCheck(ret == 0, "Validate result from SDLTest_CompareSurfaces, expected: 0, got: %i", ret);
/* Clean up. */
SDL_DestroySurface(testSurface);
}
static void compare2x(SDL_Surface *referenceSurface, int allowable_error)
{
int ret;
SDL_Rect rect;
SDL_Surface *surface, *testSurface;
/* Explicitly specify the rect in case the window isn't the expected size... */
rect.x = 0;
rect.y = 0;
rect.w = TESTRENDER_SCREEN_W * 2;
rect.h = TESTRENDER_SCREEN_H * 2;
surface = SDL_RenderReadPixels(renderer, &rect);
if (!surface) {
SDLTest_AssertCheck(surface != NULL, "Validate result from SDL_RenderReadPixels, got NULL, %s", SDL_GetError());
return;
}
testSurface = SDL_ConvertSurface(surface, RENDER_COMPARE_FORMAT);
SDL_DestroySurface(surface);
if (!testSurface) {
SDLTest_AssertCheck(testSurface != NULL, "Validate result from SDL_ConvertSurface, got NULL, %s", SDL_GetError());
return;
}
/* Compare surface. */
ret = SDLTest_CompareSurfaces(testSurface, referenceSurface, allowable_error);
SDLTest_AssertCheck(ret == 0, "Validate result from SDLTest_CompareSurfaces, expected: 0, got: %i", ret);
/* Clean up. */
SDL_DestroySurface(testSurface);
}
/**
* Clears the screen. Helper function.
*
* \sa SDL_SetRenderDrawColor
* \sa SDL_RenderClear
* \sa SDL_RenderPresent
* \sa SDL_SetRenderDrawBlendMode
*/
static int
clearScreen(void)
{
int ret;
/* Make current */
SDL_RenderPresent(renderer);
/* Set color. */
ret = SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
SDLTest_AssertCheck(ret == 0, "Validate result from SDL_SetRenderDrawColor, expected: 0, got: %i", ret);
/* Clear screen. */
ret = SDL_RenderClear(renderer);
SDLTest_AssertCheck(ret == 0, "Validate result from SDL_RenderClear, expected: 0, got: %i", ret);
/* Set defaults. */
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
SDLTest_AssertCheck(ret == 0, "Validate result from SDL_SetRenderDrawBlendMode, expected: 0, got: %i", ret);
ret = SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
SDLTest_AssertCheck(ret == 0, "Validate result from SDL_SetRenderDrawColor, expected: 0, got: %i", ret);
return 0;
}
/**
* Tests geometry UV wrapping
*/
static int render_testUVWrapping(void *arg)
{
SDL_Vertex vertices[6];
SDL_Vertex *verts = vertices;
SDL_FColor color = { 1.0f, 1.0f, 1.0f, 1.0f };
float tw, th;
SDL_FRect rect;
float min_U = -0.5f;
float max_U = 1.5f;
float min_V = -0.5f;
float max_V = 1.5f;
SDL_Texture *tface;
SDL_Surface *referenceSurface = NULL;
/* Clear surface. */
clearScreen();
/* Create face surface. */
tface = loadTestFace();
SDLTest_AssertCheck(tface != NULL, "Verify loadTestFace() result");
if (tface == NULL) {
return TEST_ABORTED;
}
CHECK_FUNC(SDL_GetTextureSize, (tface, &tw, &th))
rect.w = tw * 2;
rect.h = th * 2;
rect.x = (TESTRENDER_SCREEN_W - rect.w) / 2;
rect.y = (TESTRENDER_SCREEN_H - rect.h) / 2;
/*
* 0--1
* | /|
* |/ |
* 3--2
*
* Draw sprite2 as triangles that can be recombined as rect by software renderer
*/
/* 0 */
verts->position.x = rect.x;
verts->position.y = rect.y;
verts->color = color;
verts->tex_coord.x = min_U;
verts->tex_coord.y = min_V;
verts++;
/* 1 */
verts->position.x = rect.x + rect.w;
verts->position.y = rect.y;
verts->color = color;
verts->tex_coord.x = max_U;
verts->tex_coord.y = min_V;
verts++;
/* 2 */
verts->position.x = rect.x + rect.w;
verts->position.y = rect.y + rect.h;
verts->color = color;
verts->tex_coord.x = max_U;
verts->tex_coord.y = max_V;
verts++;
/* 0 */
verts->position.x = rect.x;
verts->position.y = rect.y;
verts->color = color;
verts->tex_coord.x = min_U;
verts->tex_coord.y = min_V;
verts++;
/* 2 */
verts->position.x = rect.x + rect.w;
verts->position.y = rect.y + rect.h;
verts->color = color;
verts->tex_coord.x = max_U;
verts->tex_coord.y = max_V;
verts++;
/* 3 */
verts->position.x = rect.x;
verts->position.y = rect.y + rect.h;
verts->color = color;
verts->tex_coord.x = min_U;
verts->tex_coord.y = max_V;
verts++;
/* Blit sprites as triangles onto the screen */
SDL_RenderGeometry(renderer, tface, vertices, 6, NULL, 0);
/* See if it's the same */
referenceSurface = SDLTest_ImageWrappingSprite();
compare(referenceSurface, ALLOWABLE_ERROR_OPAQUE);
/* Make current */
SDL_RenderPresent(renderer);
/* Clean up. */
SDL_DestroyTexture(tface);
SDL_DestroySurface(referenceSurface);
referenceSurface = NULL;
return TEST_COMPLETED;
}
/* ================= Test References ================== */
/* Render test cases */
static const SDLTest_TestCaseReference renderTestGetNumRenderDrivers = {
(SDLTest_TestCaseFp)render_testGetNumRenderDrivers, "render_testGetNumRenderDrivers", "Tests call to SDL_GetNumRenderDrivers", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestPrimitives = {
(SDLTest_TestCaseFp)render_testPrimitives, "render_testPrimitives", "Tests rendering primitives", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestPrimitivesWithViewport = {
(SDLTest_TestCaseFp)render_testPrimitivesWithViewport, "render_testPrimitivesWithViewport", "Tests rendering primitives within a viewport", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestBlit = {
(SDLTest_TestCaseFp)render_testBlit, "render_testBlit", "Tests blitting", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestBlitTiled = {
(SDLTest_TestCaseFp)render_testBlitTiled, "render_testBlitTiled", "Tests tiled blitting", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestBlitColor = {
(SDLTest_TestCaseFp)render_testBlitColor, "render_testBlitColor", "Tests blitting with color", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestBlendModes = {
(SDLTest_TestCaseFp)render_testBlendModes, "render_testBlendModes", "Tests rendering blend modes", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestViewport = {
(SDLTest_TestCaseFp)render_testViewport, "render_testViewport", "Tests viewport", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestClipRect = {
(SDLTest_TestCaseFp)render_testClipRect, "render_testClipRect", "Tests clip rect", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestLogicalSize = {
(SDLTest_TestCaseFp)render_testLogicalSize, "render_testLogicalSize", "Tests logical size", TEST_ENABLED
};
static const SDLTest_TestCaseReference renderTestUVWrapping = {
(SDLTest_TestCaseFp)render_testUVWrapping, "render_testUVWrapping", "Tests geometry UV wrapping", TEST_ENABLED
};
/* Sequence of Render test cases */
static const SDLTest_TestCaseReference *renderTests[] = {
&renderTestGetNumRenderDrivers,
&renderTestPrimitives,
&renderTestPrimitivesWithViewport,
&renderTestBlit,
&renderTestBlitTiled,
&renderTestBlitColor,
&renderTestBlendModes,
&renderTestViewport,
&renderTestClipRect,
&renderTestLogicalSize,
&renderTestUVWrapping,
NULL
};
/* Render test suite (global) */
SDLTest_TestSuiteReference renderTestSuite = {
"Render",
InitCreateRenderer,
renderTests,
CleanupDestroyRenderer
};
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