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early-access version 2835

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This commit is contained in:
pineappleEA
2022-07-15 04:00:50 +02:00
parent 5c0ee5eba6
commit 0e7aef7e36
1173 changed files with 55320 additions and 18881 deletions
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6
externals/SDL/src/render/software/SDL_blendfillrect.c vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -220,7 +220,7 @@ SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect,
SDL_Rect clipped;
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_BlendFillRect(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */
@@ -291,7 +291,7 @@ SDL_BlendFillRects(SDL_Surface * dst, const SDL_Rect * rects, int count,
int status = 0;
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_BlendFillRects(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */

2
externals/SDL/src/render/software/SDL_blendfillrect.h vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

4
externals/SDL/src/render/software/SDL_blendline.c vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -809,7 +809,7 @@ SDL_BlendLine(SDL_Surface * dst, int x1, int y1, int x2, int y2,
BlendLineFunc func;
if (!dst) {
return SDL_SetError("SDL_BlendLine(): Passed NULL destination surface");
return SDL_InvalidParamError("SDL_BlendLine(): dst");
}
func = SDL_CalculateBlendLineFunc(dst->format);

2
externals/SDL/src/render/software/SDL_blendline.h vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

6
externals/SDL/src/render/software/SDL_blendpoint.c vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -218,7 +218,7 @@ SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r
Uint8 g, Uint8 b, Uint8 a)
{
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_BlendPoint(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */
@@ -287,7 +287,7 @@ SDL_BlendPoints(SDL_Surface * dst, const SDL_Point * points, int count,
int status = 0;
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_BlendPoints(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */

2
externals/SDL/src/render/software/SDL_blendpoint.h vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

2
externals/SDL/src/render/software/SDL_draw.h vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

6
externals/SDL/src/render/software/SDL_drawline.c vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -144,7 +144,7 @@ SDL_DrawLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color)
DrawLineFunc func;
if (!dst) {
return SDL_SetError("SDL_DrawLine(): Passed NULL destination surface");
return SDL_InvalidParamError("SDL_DrawLine(): dst");
}
func = SDL_CalculateDrawLineFunc(dst->format);
@@ -173,7 +173,7 @@ SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count,
DrawLineFunc func;
if (!dst) {
return SDL_SetError("SDL_DrawLines(): Passed NULL destination surface");
return SDL_InvalidParamError("SDL_DrawLines(): dst");
}
func = SDL_CalculateDrawLineFunc(dst->format);

2
externals/SDL/src/render/software/SDL_drawline.h vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

6
externals/SDL/src/render/software/SDL_drawpoint.c vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -30,7 +30,7 @@ int
SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color)
{
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_DrawPoint(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */
@@ -71,7 +71,7 @@ SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count,
int x, y;
if (!dst) {
return SDL_SetError("Passed NULL destination surface");
return SDL_InvalidParamError("SDL_DrawPoints(): dst");
}
/* This function doesn't work on surfaces < 8 bpp */

2
externals/SDL/src/render/software/SDL_drawpoint.h vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

142
externals/SDL/src/render/software/SDL_render_sw.c vendored
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@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -99,8 +99,7 @@ SW_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
return 0;
}
SDL_SetError("Software renderer doesn't have an output surface");
return -1;
return SDL_SetError("Software renderer doesn't have an output surface");
}
static int
@@ -274,12 +273,14 @@ typedef struct CopyExData
double angle;
SDL_FPoint center;
SDL_RendererFlip flip;
float scale_x;
float scale_y;
} CopyExData;
static int
SW_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip, float scale_x, float scale_y)
{
CopyExData *verts = (CopyExData *) SDL_AllocateRenderVertices(renderer, sizeof (CopyExData), 0, &cmd->data.draw.first);
@@ -298,21 +299,41 @@ SW_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * te
verts->angle = angle;
SDL_memcpy(&verts->center, center, sizeof (SDL_FPoint));
verts->flip = flip;
verts->scale_x = scale_x;
verts->scale_y = scale_y;
return 0;
}
static int
Blit_to_Screen(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *surface, SDL_Rect *dstrect,
float scale_x, float scale_y, SDL_ScaleMode scaleMode)
{
int retval;
/* Renderer scaling, if needed */
if (scale_x != 1.0f || scale_y != 1.0f) {
SDL_Rect r;
r.x = (int)((float) dstrect->x * scale_x);
r.y = (int)((float) dstrect->y * scale_y);
r.w = (int)((float) dstrect->w * scale_x);
r.h = (int)((float) dstrect->h * scale_y);
retval = SDL_PrivateUpperBlitScaled(src, srcrect, surface, &r, scaleMode);
} else {
retval = SDL_BlitSurface(src, srcrect, surface, dstrect);
}
return retval;
}
static int
SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * final_rect,
const double angle, const SDL_FPoint * center, const SDL_RendererFlip flip)
const double angle, const SDL_FPoint * center, const SDL_RendererFlip flip, float scale_x, float scale_y)
{
SDL_Surface *src = (SDL_Surface *) texture->driverdata;
SDL_Rect tmp_rect;
SDL_Surface *src_clone, *src_rotated, *src_scaled;
SDL_Surface *mask = NULL, *mask_rotated = NULL;
int retval = 0, dstwidth, dstheight, abscenterx, abscentery;
double cangle, sangle, px, py, p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y;
int retval = 0;
SDL_BlendMode blendmode;
Uint8 alphaMod, rMod, gMod, bMod;
int applyModulation = SDL_FALSE;
@@ -414,53 +435,32 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
SDL_SetSurfaceBlendMode(src_clone, blendmode);
if (!retval) {
SDLgfx_rotozoomSurfaceSizeTrig(tmp_rect.w, tmp_rect.h, angle, &dstwidth, &dstheight, &cangle, &sangle);
src_rotated = SDLgfx_rotateSurface(src_clone, angle, dstwidth/2, dstheight/2, (texture->scaleMode == SDL_ScaleModeNearest) ? 0 : 1, flip & SDL_FLIP_HORIZONTAL, flip & SDL_FLIP_VERTICAL, dstwidth, dstheight, cangle, sangle);
SDL_Rect rect_dest;
double cangle, sangle;
SDLgfx_rotozoomSurfaceSizeTrig(tmp_rect.w, tmp_rect.h, angle, center,
&rect_dest, &cangle, &sangle);
src_rotated = SDLgfx_rotateSurface(src_clone, angle,
(texture->scaleMode == SDL_ScaleModeNearest) ? 0 : 1, flip & SDL_FLIP_HORIZONTAL, flip & SDL_FLIP_VERTICAL,
&rect_dest, cangle, sangle, center);
if (src_rotated == NULL) {
retval = -1;
}
if (!retval && mask != NULL) {
/* The mask needed for the NONE blend mode gets rotated with the same parameters. */
mask_rotated = SDLgfx_rotateSurface(mask, angle, dstwidth/2, dstheight/2, SDL_FALSE, 0, 0, dstwidth, dstheight, cangle, sangle);
mask_rotated = SDLgfx_rotateSurface(mask, angle,
SDL_FALSE, 0, 0,
&rect_dest, cangle, sangle, center);
if (mask_rotated == NULL) {
retval = -1;
}
}
if (!retval) {
/* Find out where the new origin is by rotating the four final_rect points around the center and then taking the extremes */
abscenterx = final_rect->x + (int)center->x;
abscentery = final_rect->y + (int)center->y;
/* Compensate the angle inversion to match the behaviour of the other backends */
sangle = -sangle;
/* Top Left */
px = final_rect->x - abscenterx;
py = final_rect->y - abscentery;
p1x = px * cangle - py * sangle + abscenterx;
p1y = px * sangle + py * cangle + abscentery;
/* Top Right */
px = final_rect->x + final_rect->w - abscenterx;
py = final_rect->y - abscentery;
p2x = px * cangle - py * sangle + abscenterx;
p2y = px * sangle + py * cangle + abscentery;
/* Bottom Left */
px = final_rect->x - abscenterx;
py = final_rect->y + final_rect->h - abscentery;
p3x = px * cangle - py * sangle + abscenterx;
p3y = px * sangle + py * cangle + abscentery;
/* Bottom Right */
px = final_rect->x + final_rect->w - abscenterx;
py = final_rect->y + final_rect->h - abscentery;
p4x = px * cangle - py * sangle + abscenterx;
p4y = px * sangle + py * cangle + abscentery;
tmp_rect.x = (int)MIN(MIN(p1x, p2x), MIN(p3x, p4x));
tmp_rect.y = (int)MIN(MIN(p1y, p2y), MIN(p3y, p4y));
tmp_rect.w = dstwidth;
tmp_rect.h = dstheight;
tmp_rect.x = final_rect->x + rect_dest.x;
tmp_rect.y = final_rect->y + rect_dest.y;
tmp_rect.w = rect_dest.w;
tmp_rect.h = rect_dest.h;
/* The NONE blend mode needs some special care with non-opaque surfaces.
* Other blend modes or opaque surfaces can be blitted directly.
@@ -471,7 +471,8 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
SDL_SetSurfaceAlphaMod(src_rotated, alphaMod);
SDL_SetSurfaceColorMod(src_rotated, rMod, gMod, bMod);
}
retval = SDL_BlitSurface(src_rotated, NULL, surface, &tmp_rect);
/* Renderer scaling, if needed */
retval = Blit_to_Screen(src_rotated, NULL, surface, &tmp_rect, scale_x, scale_y, texture->scaleMode);
} else {
/* The NONE blend mode requires three steps to get the pixels onto the destination surface.
* First, the area where the rotated pixels will be blitted to get set to zero.
@@ -480,7 +481,8 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
*/
SDL_Rect mask_rect = tmp_rect;
SDL_SetSurfaceBlendMode(mask_rotated, SDL_BLENDMODE_NONE);
retval = SDL_BlitSurface(mask_rotated, NULL, surface, &mask_rect);
/* Renderer scaling, if needed */
retval = Blit_to_Screen(mask_rotated, NULL, surface, &mask_rect, scale_x, scale_y, texture->scaleMode);
if (!retval) {
/* The next step copies the alpha value. This is done with the BLEND blend mode and
* by modulating the source colors with 0. Since the destination is all zeros, this
@@ -488,7 +490,8 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
*/
SDL_SetSurfaceColorMod(src_rotated, 0, 0, 0);
mask_rect = tmp_rect;
retval = SDL_BlitSurface(src_rotated, NULL, surface, &mask_rect);
/* Renderer scaling, if needed */
retval = Blit_to_Screen(src_rotated, NULL, surface, &mask_rect, scale_x, scale_y, texture->scaleMode);
if (!retval) {
/* The last step gets the color values in place. The ADD blend mode simply adds them to
* the destination (where the color values are all zero). However, because the ADD blend
@@ -504,7 +507,8 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
retval = -1;
} else {
SDL_SetSurfaceBlendMode(src_rotated_rgb, SDL_BLENDMODE_ADD);
retval = SDL_BlitSurface(src_rotated_rgb, NULL, surface, &tmp_rect);
/* Renderer scaling, if needed */
retval = Blit_to_Screen(src_rotated_rgb, NULL, surface, &tmp_rect, scale_x, scale_y, texture->scaleMode);
SDL_FreeSurface(src_rotated_rgb);
}
}
@@ -545,7 +549,7 @@ typedef struct GeometryCopyData
static int
SW_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const float *xy, int xy_stride, const int *color, int color_stride, const float *uv, int uv_stride,
const float *xy, int xy_stride, const SDL_Color *color, int color_stride, const float *uv, int uv_stride,
int num_vertices, const void *indices, int num_indices, int size_indices,
float scale_x, float scale_y)
{
@@ -823,7 +827,42 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
* to avoid potentially frequent RLE encoding/decoding.
*/
SDL_SetSurfaceRLE(surface, 0);
SDL_PrivateUpperBlitScaled(src, srcrect, surface, dstrect, texture->scaleMode);
/* Prevent to do scaling + clipping on viewport boundaries as it may lose proportion */
if (dstrect->x < 0 || dstrect->y < 0 || dstrect->x + dstrect->w > surface->w || dstrect->y + dstrect->h > surface->h) {
SDL_Surface *tmp = SDL_CreateRGBSurfaceWithFormat(0, dstrect->w, dstrect->h, 0, src->format->format);
/* Scale to an intermediate surface, then blit */
if (tmp) {
SDL_Rect r;
SDL_BlendMode blendmode;
Uint8 alphaMod, rMod, gMod, bMod;
SDL_GetSurfaceBlendMode(src, &blendmode);
SDL_GetSurfaceAlphaMod(src, &alphaMod);
SDL_GetSurfaceColorMod(src, &rMod, &gMod, &bMod);
r.x = 0;
r.y = 0;
r.w = dstrect->w;
r.h = dstrect->h;
SDL_SetSurfaceBlendMode(src, SDL_BLENDMODE_NONE);
SDL_SetSurfaceColorMod(src, 255, 255, 255);
SDL_SetSurfaceAlphaMod(src, 255);
SDL_PrivateUpperBlitScaled(src, srcrect, tmp, &r, texture->scaleMode);
SDL_SetSurfaceColorMod(tmp, rMod, gMod, bMod);
SDL_SetSurfaceAlphaMod(tmp, alphaMod);
SDL_SetSurfaceBlendMode(tmp, blendmode);
SDL_BlitSurface(tmp, NULL, surface, dstrect);
SDL_FreeSurface(tmp);
/* No need to set back r/g/b/a/blendmode to 'src' since it's done in PrepTextureForCopy() */
}
} else{
SDL_PrivateUpperBlitScaled(src, srcrect, surface, dstrect, texture->scaleMode);
}
}
break;
}
@@ -840,7 +879,8 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
}
SW_RenderCopyEx(renderer, surface, cmd->data.draw.texture, &copydata->srcrect,
&copydata->dstrect, copydata->angle, &copydata->center, copydata->flip);
&copydata->dstrect, copydata->angle, &copydata->center, copydata->flip,
copydata->scale_x, copydata->scale_y);
break;
}
@@ -977,7 +1017,7 @@ SW_CreateRendererForSurface(SDL_Surface * surface)
SW_RenderData *data;
if (!surface) {
SDL_SetError("Can't create renderer for NULL surface");
SDL_InvalidParamError("surface");
return NULL;
}

2
externals/SDL/src/render/software/SDL_render_sw_c.h vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages

235
externals/SDL/src/render/software/SDL_rotate.c vendored
View File

@@ -61,11 +61,6 @@ typedef struct tColorY {
Uint8 y;
} tColorY;
/* !
\brief Returns maximum of two numbers a and b.
*/
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
/* !
\brief Number of guard rows added to destination surfaces.
@@ -82,7 +77,7 @@ to a situation where the program can segfault.
\brief Returns colorkey info for a surface
*/
static Uint32
_colorkey(SDL_Surface *src)
get_colorkey(SDL_Surface *src)
{
Uint32 key = 0;
if (SDL_HasColorKey(src)) {
@@ -91,6 +86,18 @@ _colorkey(SDL_Surface *src)
return key;
}
/* rotate (sx, sy) by (angle, center) into (dx, dy) */
static void
rotate(double sx, double sy, double sinangle, double cosangle, const SDL_FPoint *center, double *dx, double *dy) {
sx -= center->x;
sy -= center->y;
*dx = cosangle * sx - sinangle * sy;
*dy = sinangle * sx + cosangle * sy;
*dx += center->x;
*dy += center->y;
}
/* !
\brief Internal target surface sizing function for rotations with trig result return.
@@ -105,49 +112,61 @@ _colorkey(SDL_Surface *src)
*/
void
SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle,
int *dstwidth, int *dstheight,
double *cangle, double *sangle)
SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, const SDL_FPoint *center,
SDL_Rect *rect_dest, double *cangle, double *sangle)
{
/* The trig code below gets the wrong size (due to FP inaccuracy?) when angle is a multiple of 90 degrees */
int angle90 = (int)(angle/90);
if(angle90 == angle/90) { /* if the angle is a multiple of 90 degrees */
angle90 %= 4;
if(angle90 < 0) angle90 += 4; /* 0:0 deg, 1:90 deg, 2:180 deg, 3:270 deg */
if(angle90 & 1) {
*dstwidth = height;
*dstheight = width;
*cangle = 0;
*sangle = angle90 == 1 ? -1 : 1; /* reversed because our rotations are clockwise */
} else {
*dstwidth = width;
*dstheight = height;
*cangle = angle90 == 0 ? 1 : -1;
*sangle = 0;
}
} else {
double x, y, cx, cy, sx, sy;
double radangle;
int dstwidthhalf, dstheighthalf;
/*
* Determine destination width and height by rotating a centered source box
*/
radangle = angle * (M_PI / -180.0); /* reverse the angle because our rotations are clockwise */
*sangle = SDL_sin(radangle);
*cangle = SDL_cos(radangle);
x = (double)(width / 2);
y = (double)(height / 2);
cx = *cangle * x;
cy = *cangle * y;
sx = *sangle * x;
sy = *sangle * y;
int minx, maxx, miny, maxy;
double radangle;
double x0, x1, x2, x3;
double y0, y1, y2, y3;
double sinangle;
double cosangle;
dstwidthhalf = MAX((int)
SDL_ceil(MAX(MAX(MAX(SDL_fabs(cx + sy), SDL_fabs(cx - sy)), SDL_fabs(-cx + sy)), SDL_fabs(-cx - sy))), 1);
dstheighthalf = MAX((int)
SDL_ceil(MAX(MAX(MAX(SDL_fabs(sx + cy), SDL_fabs(sx - cy)), SDL_fabs(-sx + cy)), SDL_fabs(-sx - cy))), 1);
*dstwidth = 2 * dstwidthhalf;
*dstheight = 2 * dstheighthalf;
radangle = angle * (M_PI / 180.0);
sinangle = SDL_sin(radangle);
cosangle = SDL_cos(radangle);
/*
* Determine destination width and height by rotating a source box, at pixel center
*/
rotate(0.5, 0.5, sinangle, cosangle, center, &x0, &y0);
rotate(width - 0.5, 0.5, sinangle, cosangle, center, &x1, &y1);
rotate(0.5, height - 0.5, sinangle, cosangle, center, &x2, &y2);
rotate(width - 0.5, height - 0.5, sinangle, cosangle, center, &x3, &y3);
minx = (int)SDL_floor( SDL_min( SDL_min(x0, x1), SDL_min(x2, x3) ) );
maxx = (int)SDL_ceil( SDL_max( SDL_max(x0, x1), SDL_max(x2, x3) ) );
miny = (int)SDL_floor( SDL_min( SDL_min(y0, y1), SDL_min(y2, y3) ) );
maxy = (int)SDL_ceil( SDL_max( SDL_max(y0, y1), SDL_max(y2, y3) ) );
rect_dest->w = maxx - minx;
rect_dest->h = maxy - miny;
rect_dest->x = minx;
rect_dest->y = miny;
/* reverse the angle because our rotations are clockwise */
*sangle = -sinangle;
*cangle = cosangle;
{
/* The trig code below gets the wrong size (due to FP inaccuracy?) when angle is a multiple of 90 degrees */
int angle90 = (int)(angle/90);
if(angle90 == angle/90) { /* if the angle is a multiple of 90 degrees */
angle90 %= 4;
if(angle90 < 0) angle90 += 4; /* 0:0 deg, 1:90 deg, 2:180 deg, 3:270 deg */
if(angle90 & 1) {
rect_dest->w = height;
rect_dest->h = width;
*cangle = 0;
*sangle = angle90 == 1 ? -1 : 1; /* reversed because our rotations are clockwise */
} else {
rect_dest->w = width;
rect_dest->h = height;
*cangle = angle90 == 0 ? 1 : -1;
*sangle = 0;
}
}
}
}
@@ -220,48 +239,56 @@ Assumes dst surface was allocated with the correct dimensions.
\param src Source surface.
\param dst Destination surface.
\param cx Horizontal center coordinate.
\param cy Vertical center coordinate.
\param isin Integer version of sine of angle.
\param icos Integer version of cosine of angle.
\param flipx Flag indicating horizontal mirroring should be applied.
\param flipy Flag indicating vertical mirroring should be applied.
\param smooth Flag indicating anti-aliasing should be used.
\param dst_rect destination coordinates
\param center true center.
*/
static void
_transformSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos, int flipx, int flipy, int smooth)
transformSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int isin, int icos,
int flipx, int flipy, int smooth,
const SDL_Rect *rect_dest,
const SDL_FPoint *center)
{
int x, y, t1, t2, dx, dy, xd, yd, sdx, sdy, ax, ay, ex, ey, sw, sh;
int sw, sh;
int cx, cy;
tColorRGBA c00, c01, c10, c11, cswap;
tColorRGBA *pc, *sp;
int gap;
const int fp_half = (1<<15);
/*
* Variable setup
*/
xd = ((src->w - dst->w) << 15);
yd = ((src->h - dst->h) << 15);
ax = (cx << 16) - (icos * cx);
ay = (cy << 16) - (isin * cx);
sw = src->w - 1;
sh = src->h - 1;
pc = (tColorRGBA*) dst->pixels;
gap = dst->pitch - dst->w * 4;
cx = (int)(center->x * 65536.0);
cy = (int)(center->y * 65536.0);
/*
* Switch between interpolating and non-interpolating code
*/
if (smooth) {
int y;
for (y = 0; y < dst->h; y++) {
dy = cy - y;
sdx = (ax + (isin * dy)) + xd;
sdy = (ay - (icos * dy)) + yd;
int x;
double src_x = (rect_dest->x + 0 + 0.5 - center->x);
double src_y = (rect_dest->y + y + 0.5 - center->y);
int sdx = (int)((icos * src_x - isin * src_y) + cx - fp_half);
int sdy = (int)((isin * src_x + icos * src_y) + cy - fp_half);
for (x = 0; x < dst->w; x++) {
dx = (sdx >> 16);
dy = (sdy >> 16);
int dx = (sdx >> 16);
int dy = (sdy >> 16);
if (flipx) dx = sw - dx;
if (flipy) dy = sh - dy;
if ((dx > -1) && (dy > -1) && (dx < (src->w-1)) && (dy < (src->h-1))) {
int ex, ey;
int t1, t2;
sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy) + dx;
c00 = *sp;
sp += 1;
@@ -303,13 +330,16 @@ _transformSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int
pc = (tColorRGBA *) ((Uint8 *) pc + gap);
}
} else {
int y;
for (y = 0; y < dst->h; y++) {
dy = cy - y;
sdx = (ax + (isin * dy)) + xd;
sdy = (ay - (icos * dy)) + yd;
int x;
double src_x = (rect_dest->x + 0 + 0.5 - center->x);
double src_y = (rect_dest->y + y + 0.5 - center->y);
int sdx = (int)((icos * src_x - isin * src_y) + cx - fp_half);
int sdy = (int)((isin * src_x + icos * src_y) + cy - fp_half);
for (x = 0; x < dst->w; x++) {
dx = (sdx >> 16);
dy = (sdy >> 16);
int dx = (sdx >> 16);
int dy = (sdy >> 16);
if ((unsigned)dx < (unsigned)src->w && (unsigned)dy < (unsigned)src->h) {
if(flipx) dx = sw - dx;
if(flipy) dy = sh - dy;
@@ -335,46 +365,54 @@ Assumes dst surface was allocated with the correct dimensions.
\param src Source surface.
\param dst Destination surface.
\param cx Horizontal center coordinate.
\param cy Vertical center coordinate.
\param isin Integer version of sine of angle.
\param icos Integer version of cosine of angle.
\param flipx Flag indicating horizontal mirroring should be applied.
\param flipy Flag indicating vertical mirroring should be applied.
\param dst_rect destination coordinates
\param center true center.
*/
static void
transformSurfaceY(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos, int flipx, int flipy)
transformSurfaceY(SDL_Surface * src, SDL_Surface * dst, int isin, int icos, int flipx, int flipy,
const SDL_Rect *rect_dest,
const SDL_FPoint *center)
{
int x, y, dx, dy, xd, yd, sdx, sdy, ax, ay;
int sw, sh;
int cx, cy;
tColorY *pc;
int gap;
const int fp_half = (1<<15);
int y;
/*
* Variable setup
*/
xd = ((src->w - dst->w) << 15);
yd = ((src->h - dst->h) << 15);
ax = (cx << 16) - (icos * cx);
ay = (cy << 16) - (isin * cx);
sw = src->w - 1;
sh = src->h - 1;
pc = (tColorY*) dst->pixels;
gap = dst->pitch - dst->w;
cx = (int)(center->x * 65536.0);
cy = (int)(center->y * 65536.0);
/*
* Clear surface to colorkey
*/
SDL_memset(pc, (int)(_colorkey(src) & 0xff), dst->pitch * dst->h);
SDL_memset(pc, (int)(get_colorkey(src) & 0xff), dst->pitch * dst->h);
/*
* Iterate through destination surface
*/
for (y = 0; y < dst->h; y++) {
dy = cy - y;
sdx = (ax + (isin * dy)) + xd;
sdy = (ay - (icos * dy)) + yd;
int x;
double src_x = (rect_dest->x + 0 + 0.5 - center->x);
double src_y = (rect_dest->y + y + 0.5 - center->y);
int sdx = (int)((icos * src_x - isin * src_y) + cx - fp_half);
int sdy = (int)((isin * src_x + icos * src_y) + cy - fp_half);
for (x = 0; x < dst->w; x++) {
dx = (sdx >> 16);
dy = (sdy >> 16);
int dx = (sdx >> 16);
int dy = (sdy >> 16);
if ((unsigned)dx < (unsigned)src->w && (unsigned)dy < (unsigned)src->h) {
if (flipx) dx = (src->w-1)-dx;
if (flipy) dy = (src->h-1)-dy;
if (flipx) dx = sw - dx;
if (flipy) dy = sh- dy;
*pc = *((tColorY *)src->pixels + src->pitch * dy + dx);
}
sdx += icos;
@@ -390,7 +428,7 @@ transformSurfaceY(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin
\brief Rotates and zooms a surface with different horizontal and vertival scaling factors and optional anti-aliasing.
Rotates a 32-bit or 8-bit 'src' surface to newly created 'dst' surface.
'angle' is the rotation in degrees, 'centerx' and 'centery' the rotation center. If 'smooth' is set
'angle' is the rotation in degrees, 'center' the rotation center. If 'smooth' is set
then the destination 32-bit surface is anti-aliased. 8-bit surfaces must have a colorkey. 32-bit
surfaces must have a 8888 layout with red, green, blue and alpha masks (any ordering goes).
The blend mode of the 'src' surface has some effects on generation of the 'dst' surface: The NONE
@@ -400,21 +438,21 @@ When using the NONE and MOD modes, color and alpha modulation must be applied be
\param src The surface to rotozoom.
\param angle The angle to rotate in degrees.
\param centerx The horizontal coordinate of the center of rotation
\param zoomy The vertical coordinate of the center of rotation
\param smooth Antialiasing flag; set to SMOOTHING_ON to enable.
\param flipx Set to 1 to flip the image horizontally
\param flipy Set to 1 to flip the image vertically
\param dstwidth The destination surface width
\param dstheight The destination surface height
\param rect_dest The destination rect bounding box
\param cangle The angle cosine
\param sangle The angle sine
\param center The true coordinate of the center of rotation
\return The new rotated surface.
*/
SDL_Surface *
SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery, int smooth, int flipx, int flipy, int dstwidth, int dstheight, double cangle, double sangle)
SDLgfx_rotateSurface(SDL_Surface * src, double angle, int smooth, int flipx, int flipy,
const SDL_Rect *rect_dest, double cangle, double sangle, const SDL_FPoint *center)
{
SDL_Surface *rz_dst;
int is8bit, angle90;
@@ -433,7 +471,6 @@ SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery,
colorKeyAvailable = SDL_TRUE;
}
}
/* This function requires a 32-bit surface or 8-bit surface with a colorkey */
is8bit = src->format->BitsPerPixel == 8 && colorKeyAvailable;
if (!(is8bit || (src->format->BitsPerPixel == 32 && src->format->Amask)))
@@ -447,16 +484,18 @@ SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery,
rz_dst = NULL;
if (is8bit) {
/* Target surface is 8 bit */
rz_dst = SDL_CreateRGBSurface(0, dstwidth, dstheight + GUARD_ROWS, 8, 0, 0, 0, 0);
rz_dst = SDL_CreateRGBSurfaceWithFormat(0, rect_dest->w, rect_dest->h + GUARD_ROWS, 8, src->format->format);
if (rz_dst != NULL) {
for (i = 0; i < src->format->palette->ncolors; i++) {
rz_dst->format->palette->colors[i] = src->format->palette->colors[i];
if (src->format->palette) {
for (i = 0; i < src->format->palette->ncolors; i++) {
rz_dst->format->palette->colors[i] = src->format->palette->colors[i];
}
rz_dst->format->palette->ncolors = src->format->palette->ncolors;
}
rz_dst->format->palette->ncolors = src->format->palette->ncolors;
}
} else {
/* Target surface is 32 bit with source RGBA ordering */
rz_dst = SDL_CreateRGBSurface(0, dstwidth, dstheight + GUARD_ROWS, 32,
rz_dst = SDL_CreateRGBSurface(0, rect_dest->w, rect_dest->h + GUARD_ROWS, 32,
src->format->Rmask, src->format->Gmask,
src->format->Bmask, src->format->Amask);
}
@@ -466,7 +505,7 @@ SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery,
return NULL;
/* Adjust for guard rows */
rz_dst->h = dstheight;
rz_dst->h = rect_dest->h;
SDL_GetSurfaceBlendMode(src, &blendmode);
@@ -497,7 +536,7 @@ SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery,
}
/* check if the rotation is a multiple of 90 degrees so we can take a fast path and also somewhat reduce
* the off-by-one problem in _transformSurfaceRGBA that expresses itself when the rotation is near
* the off-by-one problem in transformSurfaceRGBA that expresses itself when the rotation is near
* multiples of 90 degrees.
*/
angle90 = (int)(angle/90);
@@ -513,16 +552,16 @@ SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery,
if(angle90 >= 0) {
transformSurfaceY90(src, rz_dst, angle90, flipx, flipy);
} else {
transformSurfaceY(src, rz_dst, centerx, centery, (int)sangleinv, (int)cangleinv,
flipx, flipy);
transformSurfaceY(src, rz_dst, (int)sangleinv, (int)cangleinv,
flipx, flipy, rect_dest, center);
}
} else {
/* Call the 32-bit transformation routine to do the rotation */
if (angle90 >= 0) {
transformSurfaceRGBA90(src, rz_dst, angle90, flipx, flipy);
} else {
_transformSurfaceRGBA(src, rz_dst, centerx, centery, (int)sangleinv, (int)cangleinv,
flipx, flipy, smooth);
transformSurfaceRGBA(src, rz_dst, (int)sangleinv, (int)cangleinv,
flipx, flipy, smooth, rect_dest, center);
}
}

12
externals/SDL/src/render/software/SDL_rotate.h vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -22,11 +22,9 @@
#ifndef SDL_rotate_h_
#define SDL_rotate_h_
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
extern SDL_Surface *SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery, int smooth, int flipx, int flipy, int dstwidth, int dstheight, double cangle, double sangle);
extern void SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, int *dstwidth, int *dstheight, double *cangle, double *sangle);
extern SDL_Surface *SDLgfx_rotateSurface(SDL_Surface * src, double angle, int smooth, int flipx, int flipy,
const SDL_Rect *rect_dest, double cangle, double sangle, const SDL_FPoint *center);
extern void SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, const SDL_FPoint *center,
SDL_Rect *rect_dest, double *cangle, double *sangle);
#endif /* SDL_rotate_h_ */

102
externals/SDL/src/render/software/SDL_triangle.c vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -119,8 +119,8 @@ void trianglepoint_2_fixedpoint(SDL_Point *a) {
a->y <<= FP_BITS;
}
/* bounding rect of three points */
static void bounding_rect(const SDL_Point *a, const SDL_Point *b, const SDL_Point *c, SDL_Rect *r)
/* bounding rect of three points (in fixed point) */
static void bounding_rect_fixedpoint(const SDL_Point *a, const SDL_Point *b, const SDL_Point *c, SDL_Rect *r)
{
int min_x = SDL_min(a->x, SDL_min(b->x, c->x));
int max_x = SDL_max(a->x, SDL_max(b->x, c->x));
@@ -133,6 +133,20 @@ static void bounding_rect(const SDL_Point *a, const SDL_Point *b, const SDL_Poin
r->h = (max_y - min_y) >> FP_BITS;
}
/* bounding rect of three points */
static void bounding_rect(const SDL_Point *a, const SDL_Point *b, const SDL_Point *c, SDL_Rect *r)
{
int min_x = SDL_min(a->x, SDL_min(b->x, c->x));
int max_x = SDL_max(a->x, SDL_max(b->x, c->x));
int min_y = SDL_min(a->y, SDL_min(b->y, c->y));
int max_y = SDL_max(a->y, SDL_max(b->y, c->y));
r->x = min_x;
r->y = min_y;
r->w = (max_x - min_x);
r->h = (max_y - min_y);
}
/* Triangle rendering, using Barycentric coordinates (w0, w1, w2)
*
* The cross product isn't computed from scratch at each iteration,
@@ -232,7 +246,7 @@ int SDL_SW_FillTriangle(SDL_Surface *dst, SDL_Point *d0, SDL_Point *d1, SDL_Poin
}
}
bounding_rect(d0, d1, d2, &dstrect);
bounding_rect_fixedpoint(d0, d1, d2, &dstrect);
{
/* Clip triangle rect with surface rect */
@@ -438,7 +452,6 @@ int SDL_SW_BlitTriangle(
SDL_BlendMode blend;
SDL_Rect srcrect;
SDL_Rect dstrect;
SDL_Point s2_x_area;
@@ -495,11 +508,29 @@ int SDL_SW_BlitTriangle(
is_uniform = COLOR_EQ(c0, c1) && COLOR_EQ(c1, c2);
bounding_rect(s0, s1, s2, &srcrect);
bounding_rect(d0, d1, d2, &dstrect);
bounding_rect_fixedpoint(d0, d1, d2, &dstrect);
SDL_GetSurfaceBlendMode(src, &blend);
/* TRIANGLE_GET_TEXTCOORD interpolates up to the max values included, so reduce by 1 */
{
SDL_Rect srcrect;
int maxx, maxy;
bounding_rect(s0, s1, s2, &srcrect);
maxx = srcrect.x + srcrect.w;
maxy = srcrect.y + srcrect.h;
if (srcrect.w > 0) {
if (s0->x == maxx) s0->x--;
if (s1->x == maxx) s1->x--;
if (s2->x == maxx) s2->x--;
}
if (srcrect.h > 0) {
if (s0->y == maxy) s0->y--;
if (s1->y == maxy) s1->y--;
if (s2->y == maxy) s2->y--;
}
}
if (is_uniform) {
// SDL_GetSurfaceColorMod(src, &r, &g, &b);
has_modulation = c0.r != 255 || c0.g != 255 || c0.b != 255 || c0.a != 255;;
@@ -687,6 +718,21 @@ end:
}
#define FORMAT_ALPHA 0
#define FORMAT_NO_ALPHA -1
#define FORMAT_2101010 1
#define FORMAT_HAS_ALPHA(format) format == 0
#define FORMAT_HAS_NO_ALPHA(format) format < 0
static int SDL_INLINE detect_format(SDL_PixelFormat *pf) {
if (pf->format == SDL_PIXELFORMAT_ARGB2101010) {
return FORMAT_2101010;
} else if (pf->Amask) {
return FORMAT_ALPHA;
} else {
return FORMAT_NO_ALPHA;
}
}
static void
SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
SDL_Point s2_x_area, SDL_Rect dstrect, int area, int bias_w0, int bias_w1, int bias_w2,
@@ -707,25 +753,32 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
SDL_PixelFormat *dst_fmt = info->dst_fmt;
int srcbpp = src_fmt->BytesPerPixel;
int dstbpp = dst_fmt->BytesPerPixel;
int srcfmt_val;
int dstfmt_val;
Uint32 rgbmask = ~src_fmt->Amask;
Uint32 ckey = info->colorkey & rgbmask;
Uint8 *dst_ptr = info->dst;
int dst_pitch = info->dst_pitch;;
srcfmt_val = detect_format(src_fmt);
dstfmt_val = detect_format(dst_fmt);
TRIANGLE_BEGIN_LOOP
{
Uint8 *src;
Uint8 *dst = dptr;
TRIANGLE_GET_TEXTCOORD
src = (info->src + (srcy * info->src_pitch) + (srcx * srcbpp));
if (src_fmt->Amask) {
DISEMBLE_RGBA(src, srcbpp, src_fmt, srcpixel, srcR, srcG,
srcB, srcA);
} else {
DISEMBLE_RGB(src, srcbpp, src_fmt, srcpixel, srcR, srcG,
srcB);
if (FORMAT_HAS_ALPHA(srcfmt_val)) {
DISEMBLE_RGBA(src, srcbpp, src_fmt, srcpixel, srcR, srcG, srcB, srcA);
} else if (FORMAT_HAS_NO_ALPHA(srcfmt_val)) {
DISEMBLE_RGB(src, srcbpp, src_fmt, srcpixel, srcR, srcG, srcB);
srcA = 0xFF;
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
srcpixel = *((Uint32 *)(src));
RGBA_FROM_ARGB2101010(srcpixel, srcR, srcG, srcB, srcA);
}
if (flags & SDL_COPY_COLORKEY) {
/* srcpixel isn't set for 24 bpp */
@@ -737,13 +790,15 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
continue;
}
}
if (dst_fmt->Amask) {
DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG,
dstB, dstA);
} else {
DISEMBLE_RGB(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG,
dstB);
if (FORMAT_HAS_ALPHA(dstfmt_val)) {
DISEMBLE_RGBA(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB, dstA);
} else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) {
DISEMBLE_RGB(dst, dstbpp, dst_fmt, dstpixel, dstR, dstG, dstB);
dstA = 0xFF;
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
dstpixel = *((Uint32 *)(dst));
RGBA_FROM_ARGB2101010(dstpixel, dstR, dstG, dstB, dstA);
}
if (! is_uniform) {
@@ -814,10 +869,15 @@ SDL_BlitTriangle_Slow(SDL_BlitInfo *info,
dstA = 255;
break;
}
if (dst_fmt->Amask) {
if (FORMAT_HAS_ALPHA(dstfmt_val)) {
ASSEMBLE_RGBA(dst, dstbpp, dst_fmt, dstR, dstG, dstB, dstA);
} else {
} else if (FORMAT_HAS_NO_ALPHA(dstfmt_val)) {
ASSEMBLE_RGB(dst, dstbpp, dst_fmt, dstR, dstG, dstB);
} else {
/* SDL_PIXELFORMAT_ARGB2101010 */
Uint32 pixel;
ARGB2101010_FROM_RGBA(pixel, dstR, dstG, dstB, dstA);
*(Uint32 *)dst = pixel;
}
}
TRIANGLE_END_LOOP

2
externals/SDL/src/render/software/SDL_triangle.h vendored
View File

@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages