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update sdl to https://github.com/libsdl-org/SDL 22March 2022

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This commit is contained in:
AzaezelX 2022-03-23 01:43:08 -05:00
parent ee4253c982
commit 2614274639
1225 changed files with 148950 additions and 51674 deletions
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6
Engine/lib/sdl/src/render/software/SDL_blendfillrect.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_blendfillrect.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_blendline.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_blendline.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_blendpoint.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_blendpoint.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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

10
Engine/lib/sdl/src/render/software/SDL_draw.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
@ -618,10 +618,10 @@ do { \
while (height--) { \
{ int n = (width+3)/4; \
switch (width & 3) { \
case 0: do { op; pixel++; /* fallthrough */ \
case 3: op; pixel++; /* fallthrough */ \
case 2: op; pixel++; /* fallthrough */ \
case 1: op; pixel++; /* fallthrough */ \
case 0: do { op; pixel++; SDL_FALLTHROUGH; \
case 3: op; pixel++; SDL_FALLTHROUGH; \
case 2: op; pixel++; SDL_FALLTHROUGH; \
case 1: op; pixel++; \
} while ( --n > 0 ); \
} \
} \

10
Engine/lib/sdl/src/render/software/SDL_drawline.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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);
@ -193,8 +193,8 @@ SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count,
continue;
}
/* Draw the end if it was clipped */
draw_end = (x2 != points[i].x || y2 != points[i].y);
/* Draw the end if the whole line is a single point or it was clipped */
draw_end = ((x1 == x2) && (y1 == y2)) || (x2 != points[i].x || y2 != points[i].y);
func(dst, x1, y1, x2, y2, color, draw_end);
}

2
Engine/lib/sdl/src/render/software/SDL_drawline.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_drawpoint.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
Engine/lib/sdl/src/render/software/SDL_drawpoint.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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

435
Engine/lib/sdl/src/render/software/SDL_render_sw.c
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
@ -33,6 +33,7 @@
#include "SDL_drawline.h"
#include "SDL_drawpoint.h"
#include "SDL_rotate.h"
#include "SDL_triangle.h"
/* SDL surface based renderer implementation */
@ -98,8 +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
@ -116,9 +116,8 @@ SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
texture->driverdata =
SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
Bmask, Amask);
SDL_SetSurfaceColorMod(texture->driverdata, texture->r, texture->g,
texture->b);
SDL_SetSurfaceAlphaMod(texture->driverdata, texture->a);
SDL_SetSurfaceColorMod(texture->driverdata, texture->color.r, texture->color.g, texture->color.b);
SDL_SetSurfaceAlphaMod(texture->driverdata, texture->color.a);
SDL_SetSurfaceBlendMode(texture->driverdata, texture->blendMode);
/* Only RLE encode textures without an alpha channel since the RLE coder
@ -214,18 +213,9 @@ SW_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FP
cmd->data.draw.count = count;
if (renderer->viewport.x || renderer->viewport.y) {
const int x = renderer->viewport.x;
const int y = renderer->viewport.y;
for (i = 0; i < count; i++, verts++, points++) {
verts->x = (int)(x + points->x);
verts->y = (int)(y + points->y);
}
} else {
for (i = 0; i < count; i++, verts++, points++) {
verts->x = (int)points->x;
verts->y = (int)points->y;
}
for (i = 0; i < count; i++, verts++, points++) {
verts->x = (int)points->x;
verts->y = (int)points->y;
}
return 0;
@ -243,23 +233,11 @@ SW_QueueFillRects(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRe
cmd->data.draw.count = count;
if (renderer->viewport.x || renderer->viewport.y) {
const int x = renderer->viewport.x;
const int y = renderer->viewport.y;
for (i = 0; i < count; i++, verts++, rects++) {
verts->x = (int)(x + rects->x);
verts->y = (int)(y + rects->y);
verts->w = SDL_max((int)rects->w, 1);
verts->h = SDL_max((int)rects->h, 1);
}
} else {
for (i = 0; i < count; i++, verts++, rects++) {
verts->x = (int)rects->x;
verts->y = (int)rects->y;
verts->w = SDL_max((int)rects->w, 1);
verts->h = SDL_max((int)rects->h, 1);
}
for (i = 0; i < count; i++, verts++, rects++) {
verts->x = (int)rects->x;
verts->y = (int)rects->y;
verts->w = SDL_max((int)rects->w, 1);
verts->h = SDL_max((int)rects->h, 1);
}
return 0;
@ -280,13 +258,8 @@ SW_QueueCopy(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * text
SDL_memcpy(verts, srcrect, sizeof (SDL_Rect));
verts++;
if (renderer->viewport.x || renderer->viewport.y) {
verts->x = (int)(renderer->viewport.x + dstrect->x);
verts->y = (int)(renderer->viewport.y + dstrect->y);
} else {
verts->x = (int)dstrect->x;
verts->y = (int)dstrect->y;
}
verts->x = (int)dstrect->x;
verts->y = (int)dstrect->y;
verts->w = (int)dstrect->w;
verts->h = (int)dstrect->h;
@ -300,12 +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);
@ -317,33 +292,48 @@ SW_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * te
SDL_memcpy(&verts->srcrect, srcrect, sizeof (SDL_Rect));
if (renderer->viewport.x || renderer->viewport.y) {
verts->dstrect.x = (int)(renderer->viewport.x + dstrect->x);
verts->dstrect.y = (int)(renderer->viewport.y + dstrect->y);
} else {
verts->dstrect.x = (int)dstrect->x;
verts->dstrect.y = (int)dstrect->y;
}
verts->dstrect.x = (int)dstrect->x;
verts->dstrect.y = (int)dstrect->y;
verts->dstrect.w = (int)dstrect->w;
verts->dstrect.h = (int)dstrect->h;
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;
@ -434,7 +424,7 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
retval = -1;
} else {
SDL_SetSurfaceBlendMode(src_clone, SDL_BLENDMODE_NONE);
retval = SDL_BlitScaled(src_clone, srcrect, src_scaled, &scale_rect);
retval = SDL_PrivateUpperBlitScaled(src_clone, srcrect, src_scaled, &scale_rect, texture->scaleMode);
SDL_FreeSurface(src_clone);
src_clone = src_scaled;
src_scaled = NULL;
@ -445,53 +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.
@ -502,7 +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.
@ -511,7 +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
@ -519,7 +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
@ -535,7 +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);
}
}
@ -560,6 +533,104 @@ SW_RenderCopyEx(SDL_Renderer * renderer, SDL_Surface *surface, SDL_Texture * tex
return retval;
}
typedef struct GeometryFillData
{
SDL_Point dst;
SDL_Color color;
} GeometryFillData;
typedef struct GeometryCopyData
{
SDL_Point src;
SDL_Point dst;
SDL_Color color;
} GeometryCopyData;
static int
SW_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
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)
{
int i;
int count = indices ? num_indices : num_vertices;
void *verts;
int sz = texture ? sizeof (GeometryCopyData) : sizeof (GeometryFillData);
verts = (void *) SDL_AllocateRenderVertices(renderer, count * sz, 0, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
size_indices = indices ? size_indices : 0;
if (texture) {
GeometryCopyData *ptr = (GeometryCopyData *) verts;
for (i = 0; i < count; i++) {
int j;
float *xy_;
SDL_Color col_;
float *uv_;
if (size_indices == 4) {
j = ((const Uint32 *)indices)[i];
} else if (size_indices == 2) {
j = ((const Uint16 *)indices)[i];
} else if (size_indices == 1) {
j = ((const Uint8 *)indices)[i];
} else {
j = i;
}
xy_ = (float *)((char*)xy + j * xy_stride);
col_ = *(SDL_Color *)((char*)color + j * color_stride);
uv_ = (float *)((char*)uv + j * uv_stride);
ptr->src.x = (int)(uv_[0] * texture->w);
ptr->src.y = (int)(uv_[1] * texture->h);
ptr->dst.x = (int)(xy_[0] * scale_x);
ptr->dst.y = (int)(xy_[1] * scale_y);
trianglepoint_2_fixedpoint(&ptr->dst);
ptr->color = col_;
ptr++;
}
} else {
GeometryFillData *ptr = (GeometryFillData *) verts;
for (i = 0; i < count; i++) {
int j;
float *xy_;
SDL_Color col_;
if (size_indices == 4) {
j = ((const Uint32 *)indices)[i];
} else if (size_indices == 2) {
j = ((const Uint16 *)indices)[i];
} else if (size_indices == 1) {
j = ((const Uint8 *)indices)[i];
} else {
j = i;
}
xy_ = (float *)((char*)xy + j * xy_stride);
col_ = *(SDL_Color *)((char*)color + j * color_stride);
ptr->dst.x = (int)(xy_[0] * scale_x);
ptr->dst.y = (int)(xy_[1] * scale_y);
trianglepoint_2_fixedpoint(&ptr->dst);
ptr->color = col_;
ptr++;
}
}
return 0;
}
static void
PrepTextureForCopy(const SDL_RenderCommand *cmd)
{
@ -634,7 +705,7 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
}
case SDL_RENDERCMD_SETCLIPRECT: {
drawstate.cliprect = cmd->data.cliprect.enabled ? &cmd->data.cliprect.rect : NULL;
drawstate.cliprect = cmd->data.cliprect.enabled ? &cmd->data.cliprect.rect : NULL;
drawstate.surface_cliprect_dirty = SDL_TRUE;
break;
}
@ -657,9 +728,19 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const int count = (int) cmd->data.draw.count;
const SDL_Point *verts = (SDL_Point *) (((Uint8 *) vertices) + cmd->data.draw.first);
SDL_Point *verts = (SDL_Point *) (((Uint8 *) vertices) + cmd->data.draw.first);
const SDL_BlendMode blend = cmd->data.draw.blend;
SetDrawState(surface, &drawstate);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
int i;
for (i = 0; i < count; i++) {
verts[i].x += drawstate.viewport->x;
verts[i].y += drawstate.viewport->y;
}
}
if (blend == SDL_BLENDMODE_NONE) {
SDL_DrawPoints(surface, verts, count, SDL_MapRGBA(surface->format, r, g, b, a));
} else {
@ -674,9 +755,19 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const int count = (int) cmd->data.draw.count;
const SDL_Point *verts = (SDL_Point *) (((Uint8 *) vertices) + cmd->data.draw.first);
SDL_Point *verts = (SDL_Point *) (((Uint8 *) vertices) + cmd->data.draw.first);
const SDL_BlendMode blend = cmd->data.draw.blend;
SetDrawState(surface, &drawstate);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
int i;
for (i = 0; i < count; i++) {
verts[i].x += drawstate.viewport->x;
verts[i].y += drawstate.viewport->y;
}
}
if (blend == SDL_BLENDMODE_NONE) {
SDL_DrawLines(surface, verts, count, SDL_MapRGBA(surface->format, r, g, b, a));
} else {
@ -691,9 +782,19 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const int count = (int) cmd->data.draw.count;
const SDL_Rect *verts = (SDL_Rect *) (((Uint8 *) vertices) + cmd->data.draw.first);
SDL_Rect *verts = (SDL_Rect *) (((Uint8 *) vertices) + cmd->data.draw.first);
const SDL_BlendMode blend = cmd->data.draw.blend;
SetDrawState(surface, &drawstate);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
int i;
for (i = 0; i < count; i++) {
verts[i].x += drawstate.viewport->x;
verts[i].y += drawstate.viewport->y;
}
}
if (blend == SDL_BLENDMODE_NONE) {
SDL_FillRects(surface, verts, count, SDL_MapRGBA(surface->format, r, g, b, a));
} else {
@ -713,6 +814,12 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
PrepTextureForCopy(cmd);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
dstrect->x += drawstate.viewport->x;
dstrect->y += drawstate.viewport->y;
}
if ( srcrect->w == dstrect->w && srcrect->h == dstrect->h ) {
SDL_BlitSurface(src, srcrect, surface, dstrect);
} else {
@ -720,17 +827,118 @@ SW_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertic
* to avoid potentially frequent RLE encoding/decoding.
*/
SDL_SetSurfaceRLE(surface, 0);
SDL_BlitScaled(src, srcrect, surface, dstrect);
/* 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;
}
case SDL_RENDERCMD_COPY_EX: {
const CopyExData *copydata = (CopyExData *) (((Uint8 *) vertices) + cmd->data.draw.first);
CopyExData *copydata = (CopyExData *) (((Uint8 *) vertices) + cmd->data.draw.first);
SetDrawState(surface, &drawstate);
PrepTextureForCopy(cmd);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
copydata->dstrect.x += drawstate.viewport->x;
copydata->dstrect.y += drawstate.viewport->y;
}
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;
}
case SDL_RENDERCMD_GEOMETRY: {
int i;
SDL_Rect *verts = (SDL_Rect *) (((Uint8 *) vertices) + cmd->data.draw.first);
const int count = (int) cmd->data.draw.count;
SDL_Texture *texture = cmd->data.draw.texture;
const SDL_BlendMode blend = cmd->data.draw.blend;
SetDrawState(surface, &drawstate);
if (texture) {
SDL_Surface *src = (SDL_Surface *) texture->driverdata;
GeometryCopyData *ptr = (GeometryCopyData *) verts;
PrepTextureForCopy(cmd);
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
SDL_Point vp;
vp.x = drawstate.viewport->x;
vp.y = drawstate.viewport->y;
trianglepoint_2_fixedpoint(&vp);
for (i = 0; i < count; i++) {
ptr[i].dst.x += vp.x;
ptr[i].dst.y += vp.y;
}
}
for (i = 0; i < count; i += 3, ptr += 3) {
SDL_SW_BlitTriangle(
src,
&(ptr[0].src), &(ptr[1].src), &(ptr[2].src),
surface,
&(ptr[0].dst), &(ptr[1].dst), &(ptr[2].dst),
ptr[0].color, ptr[1].color, ptr[2].color);
}
} else {
GeometryFillData *ptr = (GeometryFillData *) verts;
/* Apply viewport */
if (drawstate.viewport->x || drawstate.viewport->y) {
SDL_Point vp;
vp.x = drawstate.viewport->x;
vp.y = drawstate.viewport->y;
trianglepoint_2_fixedpoint(&vp);
for (i = 0; i < count; i++) {
ptr[i].dst.x += vp.x;
ptr[i].dst.y += vp.y;
}
}
for (i = 0; i < count; i += 3, ptr += 3) {
SDL_SW_FillTriangle(surface, &(ptr[0].dst), &(ptr[1].dst), &(ptr[2].dst), blend, ptr[0].color, ptr[1].color, ptr[2].color);
}
}
break;
}
@ -809,7 +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;
}
@ -843,6 +1051,7 @@ SW_CreateRendererForSurface(SDL_Surface * surface)
renderer->QueueFillRects = SW_QueueFillRects;
renderer->QueueCopy = SW_QueueCopy;
renderer->QueueCopyEx = SW_QueueCopyEx;
renderer->QueueGeometry = SW_QueueGeometry;
renderer->RunCommandQueue = SW_RunCommandQueue;
renderer->RenderReadPixels = SW_RenderReadPixels;
renderer->RenderPresent = SW_RenderPresent;
@ -859,9 +1068,29 @@ SW_CreateRendererForSurface(SDL_Surface * surface)
static SDL_Renderer *
SW_CreateRenderer(SDL_Window * window, Uint32 flags)
{
const char *hint;
SDL_Surface *surface;
SDL_bool no_hint_set;
/* Set the vsync hint based on our flags, if it's not already set */
hint = SDL_GetHint(SDL_HINT_RENDER_VSYNC);
if (!hint || !*hint) {
no_hint_set = SDL_TRUE;
} else {
no_hint_set = SDL_FALSE;
}
if (no_hint_set) {
SDL_SetHint(SDL_HINT_RENDER_VSYNC, (flags & SDL_RENDERER_PRESENTVSYNC) ? "1" : "0");
}
surface = SDL_GetWindowSurface(window);
/* Reset the vsync hint if we set it above */
if (no_hint_set) {
SDL_SetHint(SDL_HINT_RENDER_VSYNC, "");
}
if (!surface) {
return NULL;
}
@ -872,7 +1101,7 @@ SDL_RenderDriver SW_RenderDriver = {
SW_CreateRenderer,
{
"software",
SDL_RENDERER_SOFTWARE | SDL_RENDERER_TARGETTEXTURE,
SDL_RENDERER_SOFTWARE | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE,
8,
{
SDL_PIXELFORMAT_ARGB8888,

2
Engine/lib/sdl/src/render/software/SDL_render_sw_c.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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

234
Engine/lib/sdl/src/render/software/SDL_rotate.c
View file

@ -82,7 +82,7 @@ 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 +91,18 @@ _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 +117,61 @@ _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;
}
}
}
}
@ -184,7 +208,7 @@ computeSourceIncrements90(SDL_Surface * src, int bpp, int angle, int flipx, int
if (signy < 0) sp += (src->h-1)*src->pitch; \
\
for (dy = 0; dy < dst->h; sp += sincy, dp += dincy, dy++) { \
if (sincx == sizeof(pixelType)) { /* if advancing src and dest equally, use memcpy */ \
if (sincx == sizeof(pixelType)) { /* if advancing src and dest equally, use SDL_memcpy */ \
SDL_memcpy(dp, sp, dst->w*sizeof(pixelType)); \
sp += dst->w*sizeof(pixelType); \
dp += dst->w*sizeof(pixelType); \
@ -220,48 +244,56 @@ 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 +335,16 @@ _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 +370,54 @@ 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 +433,7 @@ 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 +443,21 @@ 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;
@ -433,13 +476,12 @@ 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)))
return NULL;
/* Calculate target factors from sin/cos and zoom */
/* Calculate target factors from sine/cosine and zoom */
sangleinv = sangle*65536.0;
cangleinv = cangle*65536.0;
@ -447,16 +489,18 @@ 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 +510,7 @@ 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 +541,7 @@ 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 +557,16 @@ 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);
}
}

8
Engine/lib/sdl/src/render/software/SDL_rotate.h
View file

@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 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
@ -26,7 +26,9 @@
#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_ */

888
Engine/lib/sdl/src/render/software/SDL_triangle.c Normal file
View file

@ -0,0 +1,888 @@
/*
Simple DirectMedia Layer
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
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_RENDER_SW && !SDL_RENDER_DISABLED
#include "SDL_surface.h"
#include "SDL_triangle.h"
#include "../../video/SDL_blit.h"
/* fixed points bits precision
* Set to 1, so that it can start rendering wth middle of a pixel precision.
* It doesn't need to be increased.
* But, if increased too much, it overflows (srcx, srcy) coordinates used for filling with texture.
* (which could be turned to int64).
*/
#define FP_BITS 1
#define COLOR_EQ(c1, c2) ((c1).r == (c2).r && (c1).g == (c2).g && (c1).b == (c2).b && (c1).a == (c2).a)
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,
int d2d1_y, int d1d2_x, int d0d2_y, int d2d0_x, int d1d0_y, int d0d1_x,
int s2s0_x, int s2s1_x, int s2s0_y, int s2s1_y, int w0_row, int w1_row, int w2_row,
SDL_Color c0, SDL_Color c1, SDL_Color c2, int is_uniform);
#if 0
int SDL_BlitTriangle(SDL_Surface *src, const SDL_Point srcpoints[3], SDL_Surface *dst, const SDL_Point dstpoints[3])
{
int i;
SDL_Point points[6];
if (src == NULL || dst == NULL) {
return -1;
}
for (i = 0; i < 3; i++) {
if (srcpoints[i].x < 0 || srcpoints[i].y < 0 || srcpoints[i].x >= src->w || srcpoints[i].y >= src->h) {
return SDL_SetError("Values of 'srcpoints' out of bounds");
}
}
points[0] = srcpoints[0];
points[1] = dstpoints[0];
points[2] = srcpoints[1];
points[3] = dstpoints[1];
points[4] = srcpoints[2];
points[5] = dstpoints[2];
for (i = 0; i < 3; i++) {
trianglepoint_2_fixedpoint(&points[2 * i + 1]);
}
return SDL_SW_BlitTriangle(src, dst, points);
}
int SDL_FillTriangle(SDL_Surface *dst, const SDL_Point points[3], Uint32 color)
{
int i;
SDL_Point points_tmp[3];
if (dst == NULL) {
return -1;
}
for (i = 0; i < 3; i++) {
points_tmp[i] = points[i];
trianglepoint_2_fixedpoint(&points_tmp[i]);
}
return SDL_SW_FillTriangle(dst, points_tmp, SDL_BLENDMODE_NONE, color);
}
#endif
/* cross product AB x AC */
static int cross_product(const SDL_Point *a, const SDL_Point *b, int c_x, int c_y)
{
return (b->x - a->x) * (c_y - a->y) - (b->y - a->y) * (c_x - a->x);
}
/* check for top left rules */
static int is_top_left(const SDL_Point *a, const SDL_Point *b, int is_clockwise)
{
if (is_clockwise) {
if (a->y == b->y && a->x < b->x) {
return 1;
}
if (b->y < a->y) {
return 1;
}
} else {
if (a->y == b->y && b->x < a->x) {
return 1;
}
if (a->y < b->y) {
return 1;
}
}
return 0;
}
void trianglepoint_2_fixedpoint(SDL_Point *a) {
a->x <<= FP_BITS;
a->y <<= FP_BITS;
}
/* 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));
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));
/* points are in fixed point, shift back */
r->x = min_x >> FP_BITS;
r->y = min_y >> FP_BITS;
r->w = (max_x - min_x) >> FP_BITS;
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,
* but optimized using constant step increments
*
*/
#define TRIANGLE_BEGIN_LOOP \
{ \
int x, y; \
for (y = 0; y < dstrect.h; y++) { \
/* y start */ \
int w0 = w0_row; \
int w1 = w1_row; \
int w2 = w2_row; \
for (x = 0; x < dstrect.w; x++) { \
/* In triangle */ \
if (w0 + bias_w0 >= 0 && w1 + bias_w1 >= 0 && w2 + bias_w2 >= 0) { \
Uint8 *dptr = (Uint8 *) dst_ptr + x * dstbpp; \
/* Use 64 bits precision to prevent overflow when interpolating color / texture with wide triangles */
#define TRIANGLE_GET_TEXTCOORD \
int srcx = (int)(((Sint64)w0 * s2s0_x + (Sint64)w1 * s2s1_x + s2_x_area.x) / area); \
int srcy = (int)(((Sint64)w0 * s2s0_y + (Sint64)w1 * s2s1_y + s2_x_area.y) / area); \
#define TRIANGLE_GET_MAPPED_COLOR \
int r = (int)(((Sint64)w0 * c0.r + (Sint64)w1 * c1.r + (Sint64)w2 * c2.r) / area); \
int g = (int)(((Sint64)w0 * c0.g + (Sint64)w1 * c1.g + (Sint64)w2 * c2.g) / area); \
int b = (int)(((Sint64)w0 * c0.b + (Sint64)w1 * c1.b + (Sint64)w2 * c2.b) / area); \
int a = (int)(((Sint64)w0 * c0.a + (Sint64)w1 * c1.a + (Sint64)w2 * c2.a) / area); \
int color = SDL_MapRGBA(format, r, g, b, a); \
#define TRIANGLE_GET_COLOR \
int r = (int)(((Sint64)w0 * c0.r + (Sint64)w1 * c1.r + (Sint64)w2 * c2.r) / area); \
int g = (int)(((Sint64)w0 * c0.g + (Sint64)w1 * c1.g + (Sint64)w2 * c2.g) / area); \
int b = (int)(((Sint64)w0 * c0.b + (Sint64)w1 * c1.b + (Sint64)w2 * c2.b) / area); \
int a = (int)(((Sint64)w0 * c0.a + (Sint64)w1 * c1.a + (Sint64)w2 * c2.a) / area); \
#define TRIANGLE_END_LOOP \
} \
/* x += 1 */ \
w0 += d2d1_y; \
w1 += d0d2_y; \
w2 += d1d0_y; \
} \
/* y += 1 */ \
w0_row += d1d2_x; \
w1_row += d2d0_x; \
w2_row += d0d1_x; \
dst_ptr += dst_pitch; \
} \
} \
int SDL_SW_FillTriangle(SDL_Surface *dst, SDL_Point *d0, SDL_Point *d1, SDL_Point *d2, SDL_BlendMode blend, SDL_Color c0, SDL_Color c1, SDL_Color c2)
{
int ret = 0;
int dst_locked = 0;
SDL_Rect dstrect;
int dstbpp;
Uint8 *dst_ptr;
int dst_pitch;
int area, is_clockwise;
int d2d1_y, d1d2_x, d0d2_y, d2d0_x, d1d0_y, d0d1_x;
int w0_row, w1_row, w2_row;
int bias_w0, bias_w1, bias_w2;
int is_uniform;
SDL_Surface *tmp = NULL;
if (dst == NULL) {
return -1;
}
area = cross_product(d0, d1, d2->x, d2->y);
is_uniform = COLOR_EQ(c0, c1) && COLOR_EQ(c1, c2);
/* Flat triangle */
if (area == 0) {
return 0;
}
/* Lock the destination, if needed */
if (SDL_MUSTLOCK(dst)) {
if (SDL_LockSurface(dst) < 0) {
ret = -1;
goto end;
} else {
dst_locked = 1;
}
}
bounding_rect_fixedpoint(d0, d1, d2, &dstrect);
{
/* Clip triangle rect with surface rect */
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = dst->w;
rect.h = dst->h;
SDL_IntersectRect(&dstrect, &rect, &dstrect);
}
{
/* Clip triangle with surface clip rect */
SDL_Rect rect;
SDL_GetClipRect(dst, &rect);
SDL_IntersectRect(&dstrect, &rect, &dstrect);
}
if (blend != SDL_BLENDMODE_NONE) {
int format = dst->format->format;
/* need an alpha format */
if (! dst->format->Amask) {
format = SDL_PIXELFORMAT_ARGB8888;
}
/* Use an intermediate surface */
tmp = SDL_CreateRGBSurfaceWithFormat(0, dstrect.w, dstrect.h, 0, format);
if (tmp == NULL) {
ret = -1;
goto end;
}
if (blend == SDL_BLENDMODE_MOD) {
Uint32 c = SDL_MapRGBA(tmp->format, 255, 255, 255, 255);
SDL_FillRect(tmp, NULL, c);
}
SDL_SetSurfaceBlendMode(tmp, blend);
dstbpp = tmp->format->BytesPerPixel;
dst_ptr = tmp->pixels;
dst_pitch = tmp->pitch;
} else {
/* Write directly to destination surface */
dstbpp = dst->format->BytesPerPixel;
dst_ptr = (Uint8 *)dst->pixels + dstrect.x * dstbpp + dstrect.y * dst->pitch;
dst_pitch = dst->pitch;
}
is_clockwise = area > 0;
area = SDL_abs(area);
d2d1_y = (d1->y - d2->y) << FP_BITS;
d0d2_y = (d2->y - d0->y) << FP_BITS;
d1d0_y = (d0->y - d1->y) << FP_BITS;
d1d2_x = (d2->x - d1->x) << FP_BITS;
d2d0_x = (d0->x - d2->x) << FP_BITS;
d0d1_x = (d1->x - d0->x) << FP_BITS;
/* Starting point for rendering, at the middle of a pixel */
{
SDL_Point p;
p.x = dstrect.x;
p.y = dstrect.y;
trianglepoint_2_fixedpoint(&p);
p.x += (1 << FP_BITS) / 2;
p.y += (1 << FP_BITS) / 2;
w0_row = cross_product(d1, d2, p.x, p.y);
w1_row = cross_product(d2, d0, p.x, p.y);
w2_row = cross_product(d0, d1, p.x, p.y);
}
/* Handle anti-clockwise triangles */
if (! is_clockwise) {
d2d1_y *= -1;
d0d2_y *= -1;
d1d0_y *= -1;
d1d2_x *= -1;
d2d0_x *= -1;
d0d1_x *= -1;
w0_row *= -1;
w1_row *= -1;
w2_row *= -1;
}
/* Add a bias to respect top-left rasterization rule */
bias_w0 = (is_top_left(d1, d2, is_clockwise) ? 0 : -1);
bias_w1 = (is_top_left(d2, d0, is_clockwise) ? 0 : -1);
bias_w2 = (is_top_left(d0, d1, is_clockwise) ? 0 : -1);
if (is_uniform) {
Uint32 color;
if (tmp) {
if (dst->format->Amask) {
color = SDL_MapRGBA(tmp->format, c0.r, c0.g, c0.b, c0.a);
} else {
//color = SDL_MapRGB(tmp->format, c0.r, c0.g, c0.b);
color = SDL_MapRGBA(tmp->format, c0.r, c0.g, c0.b, c0.a);
}
} else {
color = SDL_MapRGBA(dst->format, c0.r, c0.g, c0.b, c0.a);
}
if (dstbpp == 4) {
TRIANGLE_BEGIN_LOOP
{
*(Uint32 *)dptr = color;
}
TRIANGLE_END_LOOP
} else if (dstbpp == 3) {
TRIANGLE_BEGIN_LOOP
{
Uint8 *s = (Uint8*)&color;
dptr[0] = s[0];
dptr[1] = s[1];
dptr[2] = s[2];
}
TRIANGLE_END_LOOP
} else if (dstbpp == 2) {
TRIANGLE_BEGIN_LOOP
{
*(Uint16 *)dptr = color;
}
TRIANGLE_END_LOOP
} else if (dstbpp == 1) {
TRIANGLE_BEGIN_LOOP
{
*dptr = color;
}
TRIANGLE_END_LOOP
}
} else {
SDL_PixelFormat *format = dst->format;
if (tmp) {
format = tmp->format;
}
if (dstbpp == 4) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_MAPPED_COLOR
*(Uint32 *)dptr = color;
}
TRIANGLE_END_LOOP
} else if (dstbpp == 3) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_MAPPED_COLOR
Uint8 *s = (Uint8*)&color;
dptr[0] = s[0];
dptr[1] = s[1];
dptr[2] = s[2];
}
TRIANGLE_END_LOOP
} else if (dstbpp == 2) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_MAPPED_COLOR
*(Uint16 *)dptr = color;
}
TRIANGLE_END_LOOP
} else if (dstbpp == 1) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_MAPPED_COLOR
*dptr = color;
}
TRIANGLE_END_LOOP
}
}
if (tmp) {
SDL_BlitSurface(tmp, NULL, dst, &dstrect);
SDL_FreeSurface(tmp);
}
end:
if (dst_locked) {
SDL_UnlockSurface(dst);
}
return ret;
}
int SDL_SW_BlitTriangle(
SDL_Surface *src,
SDL_Point *s0, SDL_Point *s1, SDL_Point *s2,
SDL_Surface *dst,
SDL_Point *d0, SDL_Point *d1, SDL_Point *d2,
SDL_Color c0, SDL_Color c1, SDL_Color c2)
{
int ret = 0;
int src_locked = 0;
int dst_locked = 0;
SDL_BlendMode blend;
SDL_Rect dstrect;
SDL_Point s2_x_area;
int dstbpp;
Uint8 *dst_ptr;
int dst_pitch;
int *src_ptr;
int src_pitch;
int area, is_clockwise;
int d2d1_y, d1d2_x, d0d2_y, d2d0_x, d1d0_y, d0d1_x;
int s2s0_x, s2s1_x, s2s0_y, s2s1_y;
int w0_row, w1_row, w2_row;
int bias_w0, bias_w1, bias_w2;
int is_uniform;
int has_modulation;
if (src == NULL || dst == NULL) {
return -1;
}
area = cross_product(d0, d1, d2->x, d2->y);
/* Flat triangle */
if (area == 0) {
return 0;
}
/* Lock the destination, if needed */
if (SDL_MUSTLOCK(dst)) {
if (SDL_LockSurface(dst) < 0) {
ret = -1;
goto end;
} else {
dst_locked = 1;
}
}
/* Lock the source, if needed */
if (SDL_MUSTLOCK(src)) {
if (SDL_LockSurface(src) < 0) {
ret = -1;
goto end;
} else {
src_locked = 1;
}
}
is_uniform = COLOR_EQ(c0, c1) && COLOR_EQ(c1, c2);
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;;
} else {
has_modulation = SDL_TRUE;
}
{
/* Clip triangle rect with surface rect */
SDL_Rect rect;
rect.x = 0;
rect.y = 0;
rect.w = dst->w;
rect.h = dst->h;
SDL_IntersectRect(&dstrect, &rect, &dstrect);
}
{
/* Clip triangle with surface clip rect */
SDL_Rect rect;
SDL_GetClipRect(dst, &rect);
SDL_IntersectRect(&dstrect, &rect, &dstrect);
}
/* Set destination pointer */
dstbpp = dst->format->BytesPerPixel;
dst_ptr = (Uint8 *)dst->pixels + dstrect.x * dstbpp + dstrect.y * dst->pitch;
dst_pitch = dst->pitch;
/* Set source pointer */
src_ptr = src->pixels;
src_pitch = src->pitch;
is_clockwise = area > 0;
area = SDL_abs(area);
d2d1_y = (d1->y - d2->y) << FP_BITS;
d0d2_y = (d2->y - d0->y) << FP_BITS;
d1d0_y = (d0->y - d1->y) << FP_BITS;
d1d2_x = (d2->x - d1->x) << FP_BITS;
d2d0_x = (d0->x - d2->x) << FP_BITS;
d0d1_x = (d1->x - d0->x) << FP_BITS;
s2s0_x = s0->x - s2->x;
s2s1_x = s1->x - s2->x;
s2s0_y = s0->y - s2->y;
s2s1_y = s1->y - s2->y;
/* Starting point for rendering, at the middle of a pixel */
{
SDL_Point p;
p.x = dstrect.x;
p.y = dstrect.y;
trianglepoint_2_fixedpoint(&p);
p.x += (1 << FP_BITS) / 2;
p.y += (1 << FP_BITS) / 2;
w0_row = cross_product(d1, d2, p.x, p.y);
w1_row = cross_product(d2, d0, p.x, p.y);
w2_row = cross_product(d0, d1, p.x, p.y);
}
/* Handle anti-clockwise triangles */
if (! is_clockwise) {
d2d1_y *= -1;
d0d2_y *= -1;
d1d0_y *= -1;
d1d2_x *= -1;
d2d0_x *= -1;
d0d1_x *= -1;
w0_row *= -1;
w1_row *= -1;
w2_row *= -1;
}
/* Add a bias to respect top-left rasterization rule */
bias_w0 = (is_top_left(d1, d2, is_clockwise) ? 0 : -1);
bias_w1 = (is_top_left(d2, d0, is_clockwise) ? 0 : -1);
bias_w2 = (is_top_left(d0, d1, is_clockwise) ? 0 : -1);
/* precompute constant 's2->x * area' used in TRIANGLE_GET_TEXTCOORD */
s2_x_area.x = s2->x * area;
s2_x_area.y = s2->y * area;
if (blend != SDL_BLENDMODE_NONE || src->format->format != dst->format->format || has_modulation || ! is_uniform) {
/* Use SDL_BlitTriangle_Slow */
SDL_BlitInfo *info = &src->map->info;
SDL_BlitInfo tmp_info;
SDL_zero(tmp_info);
tmp_info.src_fmt = src->format;
tmp_info.dst_fmt = dst->format;
tmp_info.flags = info->flags;
/*
tmp_info.r = info->r;
tmp_info.g = info->g;
tmp_info.b = info->b;
tmp_info.a = info->a;
*/
tmp_info.r = c0.r;
tmp_info.g = c0.g;
tmp_info.b = c0.b;
tmp_info.a = c0.a;
tmp_info.flags &= ~(SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA);
if (c0.r != 255 || c1.r != 255 || c2.r != 255 ||
c0.g != 255 || c1.g != 255 || c2.g != 255 ||
c0.b != 255 || c1.b != 255 || c2.b != 255) {
tmp_info.flags |= SDL_COPY_MODULATE_COLOR;
}
if (c0.a != 255 || c1.a != 255 || c2.a != 255) {
tmp_info.flags |= SDL_COPY_MODULATE_ALPHA;
}
tmp_info.colorkey = info->colorkey;
/* src */
tmp_info.src = (Uint8 *) src_ptr;
tmp_info.src_pitch = src_pitch;
/* dst */
tmp_info.dst = (Uint8 *) dst_ptr;
tmp_info.dst_pitch = dst_pitch;
SDL_BlitTriangle_Slow(&tmp_info, s2_x_area, dstrect, area, bias_w0, bias_w1, bias_w2,
d2d1_y, d1d2_x, d0d2_y, d2d0_x, d1d0_y, d0d1_x,
s2s0_x, s2s1_x, s2s0_y, s2s1_y, w0_row, w1_row, w2_row,
c0, c1, c2, is_uniform);
goto end;
}
if (dstbpp == 4) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_TEXTCOORD
Uint32 *sptr = (Uint32 *)((Uint8 *) src_ptr + srcy * src_pitch);
*(Uint32 *)dptr = sptr[srcx];
}
TRIANGLE_END_LOOP
} else if (dstbpp == 3) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_TEXTCOORD
Uint8 *sptr = (Uint8 *)((Uint8 *) src_ptr + srcy * src_pitch);
dptr[0] = sptr[3 * srcx];
dptr[1] = sptr[3 * srcx + 1];
dptr[2] = sptr[3 * srcx + 2];
}
TRIANGLE_END_LOOP
} else if (dstbpp == 2) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_TEXTCOORD
Uint16 *sptr = (Uint16 *)((Uint8 *) src_ptr + srcy * src_pitch);
*(Uint16 *)dptr = sptr[srcx];
}
TRIANGLE_END_LOOP
} else if (dstbpp == 1) {
TRIANGLE_BEGIN_LOOP
{
TRIANGLE_GET_TEXTCOORD
Uint8 *sptr = (Uint8 *)((Uint8 *) src_ptr + srcy * src_pitch);
*dptr = sptr[srcx];
}
TRIANGLE_END_LOOP
}
end:
if (dst_locked) {
SDL_UnlockSurface(dst);
}
if (src_locked) {
SDL_UnlockSurface(src);
}
return ret;
}
#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,
int d2d1_y, int d1d2_x, int d0d2_y, int d2d0_x, int d1d0_y, int d0d1_x,
int s2s0_x, int s2s1_x, int s2s0_y, int s2s1_y, int w0_row, int w1_row, int w2_row,
SDL_Color c0, SDL_Color c1, SDL_Color c2, int is_uniform)
{
const int flags = info->flags;
Uint32 modulateR = info->r;
Uint32 modulateG = info->g;
Uint32 modulateB = info->b;
Uint32 modulateA = info->a;
Uint32 srcpixel;
Uint32 srcR, srcG, srcB, srcA;
Uint32 dstpixel;
Uint32 dstR, dstG, dstB, dstA;
SDL_PixelFormat *src_fmt = info->src_fmt;
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 (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 */
if (srcbpp == 3) {
srcpixel = (srcR << src_fmt->Rshift) |
(srcG << src_fmt->Gshift) | (srcB << src_fmt->Bshift);
}
if ((srcpixel & rgbmask) == ckey) {
continue;
}
}
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) {
TRIANGLE_GET_COLOR
modulateR = r;
modulateG = g;
modulateB = b;
modulateA = a;
}
if (flags & SDL_COPY_MODULATE_COLOR) {
srcR = (srcR * modulateR) / 255;
srcG = (srcG * modulateG) / 255;
srcB = (srcB * modulateB) / 255;
}
if (flags & SDL_COPY_MODULATE_ALPHA) {
srcA = (srcA * modulateA) / 255;
}
if (flags & (SDL_COPY_BLEND | SDL_COPY_ADD)) {
/* This goes away if we ever use premultiplied alpha */
if (srcA < 255) {
srcR = (srcR * srcA) / 255;
srcG = (srcG * srcA) / 255;
srcB = (srcB * srcA) / 255;
}
}
switch (flags & (SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD | SDL_COPY_MUL)) {
case 0:
dstR = srcR;
dstG = srcG;
dstB = srcB;
dstA = srcA;
break;
case SDL_COPY_BLEND:
dstR = srcR + ((255 - srcA) * dstR) / 255;
dstG = srcG + ((255 - srcA) * dstG) / 255;
dstB = srcB + ((255 - srcA) * dstB) / 255;
dstA = srcA + ((255 - srcA) * dstA) / 255;
break;
case SDL_COPY_ADD:
dstR = srcR + dstR;
if (dstR > 255)
dstR = 255;
dstG = srcG + dstG;
if (dstG > 255)
dstG = 255;
dstB = srcB + dstB;
if (dstB > 255)
dstB = 255;
break;
case SDL_COPY_MOD:
dstR = (srcR * dstR) / 255;
dstG = (srcG * dstG) / 255;
dstB = (srcB * dstB) / 255;
break;
case SDL_COPY_MUL:
dstR = ((srcR * dstR) + (dstR * (255 - srcA))) / 255;
if (dstR > 255)
dstR = 255;
dstG = ((srcG * dstG) + (dstG * (255 - srcA))) / 255;
if (dstG > 255)
dstG = 255;
dstB = ((srcB * dstB) + (dstB * (255 - srcA))) / 255;
if (dstB > 255)
dstB = 255;
dstA = ((srcA * dstA) + (dstA * (255 - srcA))) / 255;
if (dstA > 255)
dstA = 255;
break;
}
if (FORMAT_HAS_ALPHA(dstfmt_val)) {
ASSEMBLE_RGBA(dst, dstbpp, dst_fmt, dstR, dstG, dstB, dstA);
} 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
}
#endif /* SDL_VIDEO_RENDER_SW && !SDL_RENDER_DISABLED */
/* vi: set ts=4 sw=4 expandtab: */

42
Engine/lib/sdl/src/render/software/SDL_triangle.h Normal file
View file

@ -0,0 +1,42 @@
/*
Simple DirectMedia Layer
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
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef SDL_triangle_h_
#define SDL_triangle_h_
#include "../../SDL_internal.h"
extern int SDL_SW_FillTriangle(SDL_Surface *dst,
SDL_Point *d0, SDL_Point *d1, SDL_Point *d2,
SDL_BlendMode blend, SDL_Color c0, SDL_Color c1, SDL_Color c2);
extern int SDL_SW_BlitTriangle(
SDL_Surface *src,
SDL_Point *s0, SDL_Point *s1, SDL_Point *s2,
SDL_Surface *dst,
SDL_Point *d0, SDL_Point *d1, SDL_Point *d2,
SDL_Color c0, SDL_Color c1, SDL_Color c2);
extern void trianglepoint_2_fixedpoint(SDL_Point *a);
#endif /* SDL_triangle_h_ */
/* vi: set ts=4 sw=4 expandtab: */