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render.c
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render.c
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/**
* Automated SDL_Surface test.
*
* Written by Edgar Simo "bobbens"
*
* Released under Public Domain.
*/
#include "SDL.h"
#include "../SDL_at.h"
#include "../common/common.h"
/*
* Pull in images for testcases.
*/
#include "../common/images.h"
#define SCREEN_W 80
#define SCREEN_H 60
#define FACE_W img_face.width
#define FACE_H img_face.height
static SDL_Renderer *renderer;
/*
* Prototypes.
*/
static int render_compare( const char *msg, const SurfaceImage_t *s, int allowable_error );
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_testReadWrite (void);
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_Texture * 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.
*/
static int render_compare( const char *msg, const SurfaceImage_t *s, int allowable_error )
{
int ret;
SDL_Rect rect;
Uint8 pix[4*80*60];
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(renderer, &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,
RMASK, GMASK, BMASK, AMASK);
if (SDL_ATassert( "SDL_CreateRGBSurfaceFrom", testsur!=NULL ))
return 1;
/* Compare surface. */
ret = surface_compare( testsur, s, allowable_error );
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(renderer, 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(renderer,&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(renderer, 100, 100, 100, 100 );
if (!render_isSupported(ret))
fail = 1;
ret = SDL_GetRenderDrawColor(renderer, &r, &g, &b, &a );
if (!render_isSupported(ret))
fail = 1;
/* Restore natural. */
ret = SDL_SetRenderDrawColor(renderer, 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;
SDL_BlendMode mode;
fail = 0;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND );
if (!render_isSupported(ret))
fail = 1;
ret = SDL_GetRenderDrawBlendMode(renderer, &mode );
if (!render_isSupported(ret))
fail = 1;
ret = (mode != SDL_BLENDMODE_BLEND);
if (!render_isSupported(ret))
fail = 1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_ADD );
if (!render_isSupported(ret))
fail = 1;
ret = SDL_GetRenderDrawBlendMode(renderer, &mode );
if (!render_isSupported(ret))
fail = 1;
ret = (mode != SDL_BLENDMODE_ADD);
if (!render_isSupported(ret))
fail = 1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE );
if (!render_isSupported(ret))
fail = 1;
ret = SDL_GetRenderDrawBlendMode(renderer, &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_Texture * render_loadTestFace (void)
{
SDL_Surface *face;
SDL_Texture *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(renderer, 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_Texture *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_Texture *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(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE );
/*
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
*/
/* Clear screen. */
ret = SDL_RenderFillRect(renderer, NULL );
/*
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
*/
/* Set defaults. */
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE );
/*
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
*/
ret = SDL_SetRenderDrawColor(renderer, 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(renderer, &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(renderer, 13, 73, 200, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, &rect );
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
/* Draw a rectangle. */
rect.x = 10;
rect.y = 10;
rect.w = 60;
rect.h = 40;
ret = SDL_SetRenderDrawColor(renderer, 200, 0, 100, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, &rect );
if (SDL_ATassert( "SDL_RenderFillRect", 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(renderer, x*y, x*y/2, x*y/3, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderDrawPoint(renderer, x, y );
if (SDL_ATassert( "SDL_RenderDrawPoint", ret == 0))
return -1;
}
}
/* Draw some lines. */
ret = SDL_SetRenderDrawColor(renderer, 0, 255, 0, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 0, 30, 80, 30 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
ret = SDL_SetRenderDrawColor(renderer, 55, 55, 5, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 40, 30, 40, 60 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
ret = SDL_SetRenderDrawColor(renderer, 5, 105, 105, SDL_ALPHA_OPAQUE );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 0, 0, 29, 29 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 29, 30, 0, 59 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 79, 0, 50, 29 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 79, 59, 50, 30 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
/* See if it's the same. */
if (render_compare( "Primitives output not the same.", &img_primitives, ALLOWABLE_ERROR_OPAQUE ))
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(renderer, 255, 255, 255, 0 );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, NULL );
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
rect.x = 10;
rect.y = 25;
rect.w = 40;
rect.h = 25;
ret = SDL_SetRenderDrawColor(renderer, 240, 10, 10, 75 );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_ADD );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, &rect );
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
rect.x = 30;
rect.y = 40;
rect.w = 45;
rect.h = 15;
ret = SDL_SetRenderDrawColor(renderer, 10, 240, 10, 100 );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, &rect );
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
rect.x = 25;
rect.y = 25;
rect.w = 25;
rect.h = 25;
ret = SDL_SetRenderDrawColor(renderer, 10, 10, 240, 125 );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderFillRect(renderer, &rect );
if (SDL_ATassert( "SDL_RenderFillRect", ret == 0))
return -1;
/* Draw blended lines, lines for everyone. */
for (i=0; i<SCREEN_W; i+=2) {
ret = SDL_SetRenderDrawColor(renderer, 60+2*i, 240-2*i, 50, 3*i );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer,(((i/2)%3)==0) ? SDL_BLENDMODE_BLEND :
(((i/2)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_NONE );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 0, 0, i, 59 );
if (SDL_ATassert( "SDL_RenderDrawLine", ret == 0))
return -1;
}
for (i=0; i<SCREEN_H; i+=2) {
ret = SDL_SetRenderDrawColor(renderer, 60+2*i, 240-2*i, 50, 3*i );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer,(((i/2)%3)==0) ? SDL_BLENDMODE_BLEND :
(((i/2)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_NONE );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderDrawLine(renderer, 0, 0, 79, i );
if (SDL_ATassert( "SDL_RenderDrawLine", 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(renderer, j*4, i*3, j*4, i*3 );
if (SDL_ATassert( "SDL_SetRenderDrawColor", ret == 0))
return -1;
ret = SDL_SetRenderDrawBlendMode(renderer, ((((i+j)/3)%3)==0) ? SDL_BLENDMODE_BLEND :
((((i+j)/3)%3)==1) ? SDL_BLENDMODE_ADD : SDL_BLENDMODE_NONE );
if (SDL_ATassert( "SDL_SetRenderDrawBlendMode", ret == 0))
return -1;
ret = SDL_RenderDrawPoint(renderer, i, j );
if (SDL_ATassert( "SDL_RenderDrawPoint", ret == 0))
return -1;
}
}
/* See if it's the same. */
if (render_compare( "Blended primitives output not the same.", &img_blend, ALLOWABLE_ERROR_BLENDED ))
return -1;
return 0;
}
/**
* @brief Tests some blitting routines.
*/
static int render_testBlit (void)
{
int ret;
SDL_Rect rect;
SDL_Texture *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(renderer, 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.", &img_blit, ALLOWABLE_ERROR_OPAQUE ))
return -1;
return 0;
}
/**
* @brief Blits doing colour tests.
*/
static int render_testBlitColour (void)
{
int ret;
SDL_Rect rect;
SDL_Texture *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(renderer, 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).",
&img_blitColour, ALLOWABLE_ERROR_OPAQUE ))
return -1;
return 0;
}
/**
* @brief Tests blitting with alpha.
*/
static int render_testBlitAlpha (void)
{
int ret;
SDL_Rect rect;
SDL_Texture *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(renderer, 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).",
&img_blitAlpha, ALLOWABLE_ERROR_BLENDED ))
return -1;
return 0;
}
/**
* @brief Tests a blend mode.
*/
static int render_testBlitBlendMode( SDL_Texture * 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(renderer, 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_Texture *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).",
&img_blendNone, ALLOWABLE_ERROR_OPAQUE ))
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).",
&img_blendBlend, ALLOWABLE_ERROR_BLENDED ))
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).",
&img_blendAdd, ALLOWABLE_ERROR_BLENDED ))
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_NONE;
else if (mode==1) mode = SDL_BLENDMODE_BLEND;
else if (mode==2) mode = SDL_BLENDMODE_ADD;
else if (mode==3) mode = SDL_BLENDMODE_NONE;
ret = SDL_SetTextureBlendMode( tface, mode );
if (SDL_ATassert( "SDL_SetTextureBlendMode", ret == 0))
return -1;
/* Blitting. */
rect.x = i;
rect.y = j;
ret = SDL_RenderCopy(renderer, 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_*).",
&img_blendAll, ALLOWABLE_ERROR_BLENDED ))
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)
{
#endif /* TEST_STANDALONE */
int failed;
int i, j, nd, nr;
int ret;
const char *driver, *str;
char msg[256];
SDL_Window *w;
SDL_RendererInfo info;
/* Initializes the SDL subsystems. */
ret = SDL_Init(0);
if (ret != 0)
return -1;
/* Get number of drivers. */
nd = SDL_GetNumVideoDrivers();
if (nd < 0)
goto err;
SDL_ATprintVerbose( 1, "%d Video Drivers found\n", nd );
/* Now run on the video mode. */
ret = SDL_InitSubSystem( SDL_INIT_VIDEO );
if (ret != 0)
goto err;
/*
* Surface on video mode tests.
*/
/* Run for all video modes. */
failed = 0;
for (i=0; i<nd; i++) {