/**

* Automated SDL_Surface test.

*

* Written by Edgar Simo "bobbens"

*

* Released under Public Domain.

*/

#include "SDL.h"

/*

* Pull in images for testcases.

*/

#define SCREEN_W 80

#define SCREEN_H 60

#define FACE_W img_face.width

#define FACE_H img_face.height

/*

* Prototypes.

*/

static int render_isSupported( int code );

static int render_hasDrawColor (void);

static int render_hasBlendModes (void);

static int render_hasTexColor (void);

static int render_hasTexAlpha (void);

static int render_clearScreen (void);

/* Testcases. */

static int render_testPrimitives (void);

static int render_testPrimitivesBlend (void);

static int render_testBlit (void);

static int render_testBlitColour (void);

static int render_testBlitAlpha (void);

static int render_testBlitBlendMode( SDL_TextureID tface, int mode );

static int render_testBlitBlend (void);

/**

* @brief Compares screen pixels with image pixels.

*

* @param msg Message on failure.

* @param s Image to compare against.

* @return 0 on success.

*/

{

int ret;

SDL_Surface *testsur;

/* Read pixels. */

/* Explicitly specify the rect in case the window isn't expected size... */

rect.x = 0;

rect.y = 0;

rect.w = 80;

rect.h = 60;

ret = SDL_RenderReadPixels( &rect, FORMAT, pix, 80*4 );

if (SDL_ATassert( "SDL_RenderReadPixels", ret==0) )

return 1;

/* Create surface. */

testsur = SDL_CreateRGBSurfaceFrom( pix, 80, 60, 32, 80*4,

if (SDL_ATassert( "SDL_CreateRGBSurfaceFrom", testsur!=NULL ))

return 1;

/* Compare surface. */

if (SDL_ATassert( msg, ret==0 ))

return 1;

/* Clean up. */

SDL_FreeSurface( testsur );

return 0;

}

#if 0

static int dump_screen( int index )

{

int ret;

char name[1024];

Uint8 pix[4*80*60];

SDL_Surface *testsur;

SDL_RendererInfo info;

/* Read pixels. */

ret = SDL_RenderReadPixels( NULL, FORMAT, pix, 80*4 );

if (SDL_ATassert( "SDL_RenderReadPixels", ret==0) )

return 1;

/* Create surface. */

testsur = SDL_CreateRGBSurfaceFrom( pix, 80, 60, 32, 80*4,

RMASK, GMASK, BMASK, AMASK);

if (SDL_ATassert( "SDL_CreateRGBSurfaceFrom", testsur!=NULL ))

return 1;

/* Dump surface. */

SDL_GetRendererInfo(&info);

sprintf(name, "%s-%s-%d.bmp", SDL_GetCurrentVideoDriver(), info.name, index);

SDL_SaveBMP(testsur, name);

/* Clean up. */

SDL_FreeSurface( testsur );

return 0;

}

#endif

/**

* @brief Checks to see if functionality is supported.

*/

static int render_isSupported( int code )

{

return (code == 0);

}

/**

* @brief Test to see if we can vary the draw colour.

*/

static int render_hasDrawColor (void)

{

int ret, fail;

Uint8 r, g, b, a;

fail = 0;

/* Set colour. */

ret = SDL_SetRenderDrawColor( 100, 100, 100, 100 );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawColor( &r, &g, &b, &a );

if (!render_isSupported(ret))

fail = 1;

/* Restore natural. */

ret = SDL_SetRenderDrawColor( 0, 0, 0, SDL_ALPHA_OPAQUE );

if (!render_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;

}

/**

* @brief Test to see if we can vary the blend mode.

*/

static int render_hasBlendModes (void)

{

int fail;

int ret;

int mode;

fail = 0;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_BLEND );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawBlendMode( &mode );

if (!render_isSupported(ret))

fail = 1;

ret = (mode != SDL_BLENDMODE_BLEND);

if (!render_isSupported(ret))

fail = 1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_ADD );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawBlendMode( &mode );

if (!render_isSupported(ret))

fail = 1;

ret = (mode != SDL_BLENDMODE_ADD);

if (!render_isSupported(ret))

fail = 1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_MOD );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawBlendMode( &mode );

if (!render_isSupported(ret))

fail = 1;

ret = (mode != SDL_BLENDMODE_MOD);

if (!render_isSupported(ret))

fail = 1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_MASK );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawBlendMode( &mode );

if (!render_isSupported(ret))

fail = 1;

ret = (mode != SDL_BLENDMODE_MASK);

if (!render_isSupported(ret))

fail = 1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_NONE );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetRenderDrawBlendMode( &mode );

if (!render_isSupported(ret))

fail = 1;

ret = (mode != SDL_BLENDMODE_NONE);

if (!render_isSupported(ret))

fail = 1;

return !fail;

}

/**

* @brief Loads the test face.

*/

static SDL_TextureID render_loadTestFace (void)

{

SDL_Surface *face;

SDL_TextureID tface;

/* Create face surface. */

face = SDL_CreateRGBSurfaceFrom( (void*)img_face.pixel_data,

img_face.width, img_face.height, 32, img_face.width*4,

#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)

0xff000000, /* Red bit mask. */

0x00ff0000, /* Green bit mask. */

0x0000ff00, /* Blue bit mask. */

0x000000ff /* Alpha bit mask. */

#else

0x000000ff, /* Red bit mask. */

0x0000ff00, /* Green bit mask. */

0x00ff0000, /* Blue bit mask. */

0xff000000 /* Alpha bit mask. */

#endif

);

if (face == NULL)

return 0;

tface = SDL_CreateTextureFromSurface( 0, face );

SDL_FreeSurface(face);

return tface;

}

/**

* @brief Test to see if can set texture colour mode.

*/

static int render_hasTexColor (void)

{

int fail;

int ret;

SDL_TextureID tface;

Uint8 r, g, b;

/* Get test face. */

tface = render_loadTestFace();

if (tface == 0)

return 0;

/* See if supported. */

fail = 0;

ret = SDL_SetTextureColorMod( tface, 100, 100, 100 );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetTextureColorMod( tface, &r, &g, &b );

if (!render_isSupported(ret))

fail = 1;

/* Clean up. */

SDL_DestroyTexture( tface );

if (fail)

return 0;

else if ((r != 100) || (g != 100) || (b != 100))

return 0;

return 1;

}

/**

* @brief Test to see if we can vary the alpha of the texture.

*/

static int render_hasTexAlpha (void)

{

int fail;

int ret;

SDL_TextureID tface;

Uint8 a;

/* Get test face. */

tface = render_loadTestFace();

if (tface == 0)

return 0;

/* See if supported. */

fail = 0;

ret = SDL_SetTextureAlphaMod( tface, 100 );

if (!render_isSupported(ret))

fail = 1;

ret = SDL_GetTextureAlphaMod( tface, &a );

if (!render_isSupported(ret))

fail = 1;

/* Clean up. */

SDL_DestroyTexture( tface );

if (fail)

return 0;

else if (a != 100)

return 0;

return 1;

}

/**

* @brief Clears the screen.

*

* @note We don't test for errors, but they shouldn't happen.

*/

static int render_clearScreen (void)

{

int ret;

/* Set colour. */

ret = SDL_SetRenderDrawColor( 0, 0, 0, SDL_ALPHA_OPAQUE );

/*

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

*/

/* Clear screen. */

return -1;

*/

/* Set defaults. */

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_NONE );

/*

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

*/

ret = SDL_SetRenderDrawColor( 255, 255, 255, SDL_ALPHA_OPAQUE );

/*

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

*/

return 0;

}

/**

* @brief Test reading and writing framebuffer

*/

static int render_testReadWrite (void)

{

int ret;

SDL_Rect rect;

/* Write pixels. */

rect.x = 0;

rect.y = 0;

rect.w = 80;

rect.h = 60;

ret = SDL_RenderWritePixels( &rect, SDL_PIXELFORMAT_RGB24, img_primitives.pixel_data, img_primitives.width*img_primitives.bytes_per_pixel );

if (SDL_ATassert( "SDL_RenderWritePixels", ret==0) )

return 1;

/* See if it's the same. */

if (render_compare( "Read/write output not the same.", &img_primitives, ALLOWABLE_ERROR_OPAQUE ))

return -1;

return 0;

}

/**

* @brief Tests the SDL primitives for rendering.

*/

static int render_testPrimitives (void)

{

int ret;

int x, y;

SDL_Rect rect;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need drawcolour or just skip test. */

if (!render_hasDrawColor())

return 0;

/* Draw a rectangle. */

rect.x = 40;

rect.y = 0;

rect.w = 40;

rect.h = 80;

ret = SDL_SetRenderDrawColor( 13, 73, 200, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

/* Draw a rectangle. */

rect.x = 10;

rect.y = 10;

rect.w = 60;

rect.h = 40;

ret = SDL_SetRenderDrawColor( 200, 0, 100, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

/* Draw some points like so:

* X.X.X.X..

* .X.X.X.X.

* X.X.X.X.. */

for (y=0; y<3; y++) {

x = y % 2;

for (; x<80; x+=2) {

ret = SDL_SetRenderDrawColor( x*y, x*y/2, x*y/3, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_RenderPoint( x, y );

if (SDL_ATassert( "SDL_RenderPoint", ret == 0))

return -1;

}

}

/* Draw some lines. */

ret = SDL_SetRenderDrawColor( 0, 255, 0, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_RenderLine( 0, 30, 80, 30 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

ret = SDL_SetRenderDrawColor( 55, 55, 5, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_RenderLine( 40, 30, 40, 60 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

ret = SDL_SetRenderDrawColor( 5, 105, 105, SDL_ALPHA_OPAQUE );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_RenderLine( 0, 0, 29, 29 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

ret = SDL_RenderLine( 29, 30, 0, 59 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

ret = SDL_RenderLine( 79, 0, 50, 29 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

ret = SDL_RenderLine( 79, 59, 50, 30 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

/* See if it's the same. */

return -1;

return 0;

}

/**

* @brief Tests the SDL primitives with alpha for rendering.

*/

static int render_testPrimitivesBlend (void)

{

int ret;

int i, j;

SDL_Rect rect;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need drawcolour and blendmode or just skip test. */

if (!render_hasDrawColor() || !render_hasBlendModes())

return 0;

/* Create some rectangles for each blend mode. */

ret = SDL_SetRenderDrawColor( 255, 255, 255, 0 );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_NONE );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderRect( NULL );

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

rect.x = 10;

rect.y = 25;

rect.w = 40;

rect.h = 25;

ret = SDL_SetRenderDrawColor( 240, 10, 10, 75 );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_ADD );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderRect( &rect );

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

rect.x = 30;

rect.y = 40;

rect.w = 45;

rect.h = 15;

ret = SDL_SetRenderDrawColor( 10, 240, 10, 100 );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_BLEND );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderRect( &rect );

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

rect.x = 25;

rect.y = 25;

rect.w = 25;

rect.h = 25;

ret = SDL_SetRenderDrawColor( 10, 10, 240, 125 );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode( SDL_BLENDMODE_MOD );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderRect( &rect );

if (SDL_ATassert( "SDL_RenderRect", ret == 0))

return -1;

/* Draw blended lines, lines for everyone. */

for (i=0; i<SCREEN_W; i+=2) {

ret = SDL_SetRenderDrawColor( 60+2*i, 240-2*i, 50, 3*i );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode((((i/2)%3)==0) ? SDL_BLENDMODE_BLEND :

(((i/2)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_MOD );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderLine( 0, 0, i, 59 );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

}

for (i=0; i<SCREEN_H; i+=2) {

ret = SDL_SetRenderDrawColor( 60+2*i, 240-2*i, 50, 3*i );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode((((i/2)%3)==0) ? SDL_BLENDMODE_BLEND :

(((i/2)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_MOD );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderLine( 0, 0, 79, i );

if (SDL_ATassert( "SDL_RenderLine", ret == 0))

return -1;

}

/* Draw points. */

for (j=0; j<SCREEN_H; j+=3) {

for (i=0; i<SCREEN_W; i+=3) {

ret = SDL_SetRenderDrawColor( j*4, i*3, j*4, i*3 );

if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))

return -1;

ret = SDL_SetRenderDrawBlendMode( ((((i+j)/3)%3)==0) ? SDL_BLENDMODE_BLEND :

((((i+j)/3)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_MOD );

if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))

return -1;

ret = SDL_RenderPoint( i, j );

if (SDL_ATassert( "SDL_RenderPoint", ret == 0))

return -1;

}

}

/* See if it's the same. */

return -1;

return 0;

}

/**

* @brief Tests some blitting routines.

*/

static int render_testBlit (void)

{

int ret;

SDL_Rect rect;

SDL_TextureID tface;

int i, j, ni, nj;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need drawcolour or just skip test. */

if (!render_hasDrawColor())

return 0;

/* Create face surface. */

tface = render_loadTestFace();

if (SDL_ATassert( "render_loadTestFace()", tface != 0))

return -1;

/* Constant values. */

rect.w = img_face.width;

rect.h = img_face.height;

ni = SCREEN_W - img_face.width;

nj = SCREEN_H - img_face.height;

/* Loop blit. */

for (j=0; j <= nj; j+=4) {

for (i=0; i <= ni; i+=4) {

/* Blitting. */

rect.x = i;

rect.y = j;

ret = SDL_RenderCopy( tface, NULL, &rect );

if (SDL_ATassert( "SDL_RenderCopy", ret == 0))

return -1;

}

}

/* Clean up. */

SDL_DestroyTexture( tface );

/* See if it's the same. */

return -1;

return 0;

}

/**

* @brief Blits doing colour tests.

*/

static int render_testBlitColour (void)

{

int ret;

SDL_Rect rect;

SDL_TextureID tface;

int i, j, ni, nj;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need drawcolour or just skip test. */

if (!render_hasTexColor())

return 0;

/* Create face surface. */

tface = render_loadTestFace();

if (SDL_ATassert( "render_loadTestFace()", tface != 0))

return -1;

/* Constant values. */

rect.w = img_face.width;

rect.h = img_face.height;

ni = SCREEN_W - img_face.width;

nj = SCREEN_H - img_face.height;

/* Test blitting with colour mod. */

for (j=0; j <= nj; j+=4) {

for (i=0; i <= ni; i+=4) {

/* Set colour mod. */

ret = SDL_SetTextureColorMod( tface, (255/nj)*j, (255/ni)*i, (255/nj)*j );

if (SDL_ATassert( "SDL_SetTextureColorMod", ret == 0))

return -1;

/* Blitting. */

rect.x = i;

rect.y = j;

ret = SDL_RenderCopy( tface, NULL, &rect );

if (SDL_ATassert( "SDL_RenderCopy", ret == 0))

return -1;

}

}

/* Clean up. */

SDL_DestroyTexture( tface );

/* See if it's the same. */

if (render_compare( "Blit output not the same (using SDL_SetTextureColorMod).",

return -1;

return 0;

}

/**

* @brief Tests blitting with alpha.

*/

static int render_testBlitAlpha (void)

{

int ret;

SDL_Rect rect;

SDL_TextureID tface;

int i, j, ni, nj;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need alpha or just skip test. */

if (!render_hasTexAlpha())

return 0;

/* Create face surface. */

tface = render_loadTestFace();

if (SDL_ATassert( "render_loadTestFace()", tface != 0))

return -1;

/* Constant values. */

rect.w = img_face.width;

rect.h = img_face.height;

ni = SCREEN_W - img_face.width;

nj = SCREEN_H - img_face.height;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Test blitting with alpha mod. */

for (j=0; j <= nj; j+=4) {

for (i=0; i <= ni; i+=4) {

/* Set alpha mod. */

ret = SDL_SetTextureAlphaMod( tface, (255/ni)*i );

if (SDL_ATassert( "SDL_SetTextureAlphaMod", ret == 0))

return -1;

/* Blitting. */

rect.x = i;

rect.y = j;

ret = SDL_RenderCopy( tface, NULL, &rect );

if (SDL_ATassert( "SDL_RenderCopy", ret == 0))

return -1;

}

}

/* Clean up. */

SDL_DestroyTexture( tface );

/* See if it's the same. */

if (render_compare( "Blit output not the same (using SDL_SetSurfaceAlphaMod).",

return -1;

return 0;

}

/**

* @brief Tests a blend mode.

*/

static int render_testBlitBlendMode( SDL_TextureID tface, int mode )

{

int ret;

int i, j, ni, nj;

SDL_Rect rect;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Steps to take. */

ni = SCREEN_W - FACE_W;

nj = SCREEN_H - FACE_H;

/* Constant values. */

rect.w = FACE_W;

rect.h = FACE_H;

/* Test blend mode. */

for (j=0; j <= nj; j+=4) {

for (i=0; i <= ni; i+=4) {

/* Set blend mode. */

ret = SDL_SetTextureBlendMode( tface, mode );

if (SDL_ATassert( "SDL_SetTextureBlendMode", ret == 0))

return -1;

/* Blitting. */

rect.x = i;

rect.y = j;

ret = SDL_RenderCopy( tface, NULL, &rect );

if (SDL_ATassert( "SDL_RenderCopy", ret == 0))

return -1;

}

}

return 0;

}

/**

* @brief Tests some more blitting routines.

*/

static int render_testBlitBlend (void)

{

int ret;

SDL_Rect rect;

SDL_TextureID tface;

int i, j, ni, nj;

int mode;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Need drawcolour and blendmode or just skip test. */

if (!render_hasBlendModes() || !render_hasTexColor() || !render_hasTexAlpha())

return 0;

/* Create face surface. */

tface = render_loadTestFace();

if (SDL_ATassert( "render_loadTestFace()", tface != 0))

return -1;

/* Steps to take. */

ni = SCREEN_W - FACE_W;

nj = SCREEN_H - FACE_H;

/* Constant values. */

rect.w = img_face.width;

rect.h = img_face.height;

/* Set alpha mod. */

ret = SDL_SetTextureAlphaMod( tface, 100 );

if (SDL_ATassert( "SDL_SetTextureAlphaMod", ret == 0))

return -1;

/* Test None. */

if (render_testBlitBlendMode( tface, SDL_BLENDMODE_NONE ))

return -1;

/* See if it's the same. */

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_NONE).",

return -1;

/* Test Mask. */

if (render_testBlitBlendMode( tface, SDL_BLENDMODE_MASK ))

return -1;

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_MASK).",

return -1;

/* Test Blend. */

if (render_testBlitBlendMode( tface, SDL_BLENDMODE_BLEND ))

return -1;

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_BLEND).",

return -1;

/* Test Add. */

if (render_testBlitBlendMode( tface, SDL_BLENDMODE_ADD ))

return -1;

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_ADD).",

return -1;

/* Test Mod. */

if (render_testBlitBlendMode( tface, SDL_BLENDMODE_MOD ))

return -1;

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_MOD).",

return -1;

/* Clear surface. */

if (render_clearScreen())

return -1;

/* Loop blit. */

for (j=0; j <= nj; j+=4) {

for (i=0; i <= ni; i+=4) {

/* Set colour mod. */

ret = SDL_SetTextureColorMod( tface, (255/nj)*j, (255/ni)*i, (255/nj)*j );

if (SDL_ATassert( "SDL_SetTextureColorMod", ret == 0))

return -1;

/* Set alpha mod. */

ret = SDL_SetTextureAlphaMod( tface, (100/ni)*i );

if (SDL_ATassert( "SDL_SetTextureAlphaMod", ret == 0))

return -1;

/* Crazy blending mode magic. */

mode = (i/4*j/4) % 4;

if (mode==0) mode = SDL_BLENDMODE_MASK;

else if (mode==1) mode = SDL_BLENDMODE_BLEND;

else if (mode==2) mode = SDL_BLENDMODE_ADD;

else if (mode==3) mode = SDL_BLENDMODE_MOD;

ret = SDL_SetTextureBlendMode( tface, mode );

if (SDL_ATassert( "SDL_SetTextureBlendMode", ret == 0))

return -1;

/* Blitting. */

rect.x = i;

rect.y = j;

ret = SDL_RenderCopy( tface, NULL, &rect );

if (SDL_ATassert( "SDL_RenderCopy", ret == 0))

return -1;

}

}

/* Clean up. */

SDL_DestroyTexture( tface );

/* Check to see if matches. */

if (render_compare( "Blit blending output not the same (using SDL_BLENDMODE_*).",

return -1;

return 0;

}

/**

* @brief Runs all the tests on the surface.

*

* @return 0 on success.

*/

int render_runTests (void)

{

int ret;

/* No error. */

ret = 0;

/* Test functionality first. */

if (render_hasDrawColor())

SDL_ATprintVerbose( 1, " Draw Color supported\n" );

if (render_hasBlendModes())

SDL_ATprintVerbose( 1, " Blend Modes supported\n" );

if (render_hasTexColor())

SDL_ATprintVerbose( 1, " Texture Color Mod supported\n" );

if (render_hasTexAlpha())

SDL_ATprintVerbose( 1, " Texture Alpha Mod supported\n" );

/* Software surface blitting. */

ret = render_testReadWrite();

if (ret)

return -1;

ret = render_testPrimitives();

if (ret)

return -1;

ret = render_testPrimitivesBlend();

if (ret)

return -1;

ret = render_testBlit();

if (ret)

return -1;

ret = render_testBlitColour();

if (ret)

return -1;

ret = render_testBlitAlpha();

if (ret)

return -1;

ret = render_testBlitBlend();

return ret;

}

/**

* @brief Entry point.

*

* This testsuite is tricky, we're creating a testsuite per driver, the thing

* is we do quite a of stuff outside of the actual testcase which *could*

* give issues. Don't like that very much, but no way around without creating

* superfluous testsuites.

*/

#ifdef TEST_STANDALONE

int main( int argc, const char *argv[] )

{

(void) argc;

(void) argv;

#else /* TEST_STANDALONE */

int test_render (void)

{