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In the process of adding rectangle drawing
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@slouken
slouken committed Dec 18, 2009
1 parent 5ba59be commit 1492eda
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Showing 4 changed files with 543 additions and 39 deletions.
37 changes: 33 additions & 4 deletions include/SDL_surface.h
View file
Expand Up @@ -416,7 +416,7 @@ extern DECLSPEC int SDLCALL SDL_DrawPoints
*
* \return 0 on success, or -1 on error.
*/
extern DECLSPEC int SDLCALL SDL_BlendPoint
extern DECLSPEC int SDLCALL SDL_BlendDrawPoint
(SDL_Surface * dst, int x, int y,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
extern DECLSPEC int SDLCALL SDL_BlendPoints
Expand Down Expand Up @@ -448,6 +448,35 @@ extern DECLSPEC int SDLCALL SDL_BlendLines
(SDL_Surface * dst, const SDL_Point * points, int count,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);

/**
* Draws the given rectangle with \c color.
*
* If \c rect is NULL, the whole surface will be outlined with \c color.
*
* The color should be a pixel of the format used by the surface, and
* can be generated by the SDL_MapRGB() function.
*
* \return 0 on success, or -1 on error.
*/
extern DECLSPEC int SDLCALL SDL_DrawRect
(SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
extern DECLSPEC int SDLCALL SDL_DrawRects
(SDL_Surface * dst, const SDL_Rect ** rects, int count, Uint32 color);

/**
* Blends the given rectangle with \c color.
*
* If \c rect is NULL, the whole surface will have a blended outline of \c color.
*
* \return 0 on success, or -1 on error.
*/
extern DECLSPEC int SDLCALL SDL_BlendRect
(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
extern DECLSPEC int SDLCALL SDL_BlendRects
(SDL_Surface * dst, const SDL_Rect ** rects, int count,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);

/**
* Performs a fast fill of the given rectangle with \c color.
*
Expand All @@ -466,14 +495,14 @@ extern DECLSPEC int SDLCALL SDL_FillRects
/**
* Blends an RGBA value into the given rectangle.
*
* If \c rect is NULL, the whole surface will be filled with \c color.
* If \c rect is NULL, the whole surface will be blended with \c color.
*
* \return This function returns 0 on success, or -1 on error.
*/
extern DECLSPEC int SDLCALL SDL_BlendRect
extern DECLSPEC int SDLCALL SDL_BlendFillRect
(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
extern DECLSPEC int SDLCALL SDL_BlendRects
extern DECLSPEC int SDLCALL SDL_BlendFillRects
(SDL_Surface * dst, const SDL_Rect ** rects, int count,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);

Expand Down
70 changes: 40 additions & 30 deletions src/video/SDL_blendrect.c → src/video/SDL_blendfillrect.c
View file
Expand Up @@ -25,8 +25,8 @@
#include "SDL_draw.h"

static int
SDL_BlendRect_RGB555(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_RGB555(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
unsigned inva = 0xff - a;

Expand All @@ -48,8 +48,8 @@ SDL_BlendRect_RGB555(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

static int
SDL_BlendRect_RGB565(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_RGB565(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
unsigned inva = 0xff - a;

Expand All @@ -71,8 +71,8 @@ SDL_BlendRect_RGB565(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

static int
SDL_BlendRect_RGB888(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_RGB888(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
unsigned inva = 0xff - a;

Expand All @@ -94,8 +94,8 @@ SDL_BlendRect_RGB888(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

static int
SDL_BlendRect_ARGB8888(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_ARGB8888(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
unsigned inva = 0xff - a;

Expand All @@ -117,8 +117,8 @@ SDL_BlendRect_ARGB8888(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

static int
SDL_BlendRect_RGB(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_RGB(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
SDL_PixelFormat *fmt = dst->format;
unsigned inva = 0xff - a;
Expand Down Expand Up @@ -163,8 +163,8 @@ SDL_BlendRect_RGB(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

static int
SDL_BlendRect_RGBA(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect_RGBA(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
SDL_PixelFormat *fmt = dst->format;
unsigned inva = 0xff - a;
Expand Down Expand Up @@ -193,8 +193,8 @@ SDL_BlendRect_RGBA(SDL_Surface * dst, const SDL_Rect * rect, int blendMode,
}

int
SDL_BlendRect(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
SDL_Rect clipped;

Expand All @@ -203,9 +203,14 @@ SDL_BlendRect(SDL_Surface * dst, const SDL_Rect * rect,
return -1;
}

if (blendMode < SDL_BLENDMODE_BLEND) {
Uint32 color = SDL_MapRGBA(dst->format, r, g, b, a);
return SDL_FillRect(dst, rect, color);
}

/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
SDL_SetError("SDL_BlendRect(): Unsupported surface format");
SDL_SetError("SDL_BlendFillRect(): Unsupported surface format");
return -1;
}

Expand All @@ -230,22 +235,22 @@ SDL_BlendRect(SDL_Surface * dst, const SDL_Rect * rect,
case 15:
switch (dst->format->Rmask) {
case 0x7C00:
return SDL_BlendRect_RGB555(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_RGB555(dst, rect, blendMode, r, g, b, a);
}
break;
case 16:
switch (dst->format->Rmask) {
case 0xF800:
return SDL_BlendRect_RGB565(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_RGB565(dst, rect, blendMode, r, g, b, a);
}
break;
case 32:
switch (dst->format->Rmask) {
case 0x00FF0000:
if (!dst->format->Amask) {
return SDL_BlendRect_RGB888(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_RGB888(dst, rect, blendMode, r, g, b, a);
} else {
return SDL_BlendRect_ARGB8888(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_ARGB8888(dst, rect, blendMode, r, g, b, a);
}
break;
}
Expand All @@ -255,15 +260,15 @@ SDL_BlendRect(SDL_Surface * dst, const SDL_Rect * rect,
}

if (!dst->format->Amask) {
return SDL_BlendRect_RGB(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_RGB(dst, rect, blendMode, r, g, b, a);
} else {
return SDL_BlendRect_RGBA(dst, rect, blendMode, r, g, b, a);
return SDL_BlendFillRect_RGBA(dst, rect, blendMode, r, g, b, a);
}
}

int
SDL_BlendRects(SDL_Surface * dst, const SDL_Rect ** rects, int count,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
SDL_BlendFillRects(SDL_Surface * dst, const SDL_Rect ** rects, int count,
int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
SDL_Rect clipped;
int i;
Expand All @@ -276,9 +281,14 @@ SDL_BlendRects(SDL_Surface * dst, const SDL_Rect ** rects, int count,
return -1;
}

if (blendMode < SDL_BLENDMODE_BLEND) {
Uint32 color = SDL_MapRGBA(dst->format, r, g, b, a);
return SDL_FillRects(dst, rects, color);
}

/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
SDL_SetError("SDL_BlendRects(): Unsupported surface format");
SDL_SetError("SDL_BlendFillRects(): Unsupported surface format");
return -1;
}

Expand All @@ -293,22 +303,22 @@ SDL_BlendRects(SDL_Surface * dst, const SDL_Rect ** rects, int count,
case 15:
switch (dst->format->Rmask) {
case 0x7C00:
func = SDL_BlendRect_RGB555;
func = SDL_BlendFillRect_RGB555;
}
break;
case 16:
switch (dst->format->Rmask) {
case 0xF800:
func = SDL_BlendRect_RGB565;
func = SDL_BlendFillRect_RGB565;
}
break;
case 32:
switch (dst->format->Rmask) {
case 0x00FF0000:
if (!dst->format->Amask) {
func = SDL_BlendRect_RGB888;
func = SDL_BlendFillRect_RGB888;
} else {
func = SDL_BlendRect_ARGB8888;
func = SDL_BlendFillRect_ARGB8888;
}
break;
}
Expand All @@ -319,9 +329,9 @@ SDL_BlendRects(SDL_Surface * dst, const SDL_Rect ** rects, int count,

if (!func) {
if (!dst->format->Amask) {
func = SDL_BlendRect_RGB;
func = SDL_BlendFillRect_RGB;
} else {
func = SDL_BlendRect_RGBA;
func = SDL_BlendFillRect_RGBA;
}
}

Expand Down
43 changes: 38 additions & 5 deletions src/video/SDL_draw.h
View file
Expand Up @@ -341,7 +341,44 @@ do { \
#define DRAWLINE(x0, y0, x1, y1, op) BRESENHAM(x0, y0, x1, y1, op)

/*
* Define blend fill macro
* Define draw rect macro
*/
#define DRAWRECT(type, op) \
do { \
int width = rect->w; \
int height = rect->h; \
int pitch = (dst->pitch / dst->format->BytesPerPixel); \
int skip = pitch - width; \
type *pixel; \
pixel = (type *)dst->pixels + rect->y * pitch + rect->x; \
{ int n = (width+3)/4; \
switch (width & 3) { \
case 0: do { op; pixel++; \
case 3: op; pixel++; \
case 2: op; pixel++; \
case 1: op; pixel++; \
} while ( --n > 0 ); \
} \
} \
pixel += skip; \
width -= 1; \
height -= 2; \
while (height--) { \
op; pixel += width; op; pixel += skip; \
} \
{ int n = (width+3)/4; \
switch (width & 3) { \
case 0: do { op; pixel++; \
case 3: op; pixel++; \
case 2: op; pixel++; \
case 1: op; pixel++; \
} while ( --n > 0 ); \
} \
} \
} while (0)

/*
* Define fill rect macro
*/

#define FILLRECT(type, op) \
Expand All @@ -365,8 +402,4 @@ do { \
} \
} while (0)

/*
* Define blend line macro
*/

/* vi: set ts=4 sw=4 expandtab: */

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