mirror of https://github.com/encounter/SDL.git
Add triangle prim support
Improve line support Add initial texture support
This commit is contained in:
Daniel Santos
Sam Lantinga
parent
88e64f9ae1
commit
cdf89fde91
|
|
@ -144,7 +144,7 @@ PS2_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count,
|
|||
gsKit_prim_line(gsGlobal, x1, y1, x2, y2, 1, color);
|
||||
}
|
||||
if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
|
||||
SDL_DrawPoint(dst, points[count-1].x, points[count-1].y, color);
|
||||
PS2_DrawPoints(dst, points, 1, color);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -265,34 +265,77 @@ PS2_GetOutputSize(SDL_Renderer * renderer, int *w, int *h)
|
|||
return SDL_SetError("Software renderer doesn't have an output surface");
|
||||
}
|
||||
|
||||
static int
|
||||
PixelFormatToPS2PSM(Uint32 format)
|
||||
{
|
||||
switch (format) {
|
||||
case SDL_PIXELFORMAT_ABGR1555:
|
||||
return GS_PSM_CT16S;
|
||||
case SDL_PIXELFORMAT_BGR888:
|
||||
return GS_PSM_CT24;
|
||||
case SDL_PIXELFORMAT_ABGR8888:
|
||||
return GS_PSM_CT32;
|
||||
default:
|
||||
return GS_PSM_CT32;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
PS2_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
|
||||
{
|
||||
int bpp;
|
||||
Uint32 Rmask, Gmask, Bmask, Amask;
|
||||
GSTEXTURE* ps2_tex = (GSTEXTURE*) SDL_calloc(1, sizeof(GSTEXTURE));
|
||||
|
||||
if (!SDL_PixelFormatEnumToMasks
|
||||
(texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
|
||||
return SDL_SetError("Unknown texture format");
|
||||
if(!ps2_tex)
|
||||
return SDL_OutOfMemory();
|
||||
|
||||
ps2_tex->Delayed = true;
|
||||
ps2_tex->Width = texture->w;
|
||||
ps2_tex->Height = texture->h;
|
||||
ps2_tex->PSM = PixelFormatToPS2PSM(texture->format);
|
||||
ps2_tex->Mem = memalign(128, gsKit_texture_size_ee(ps2_tex->Width, ps2_tex->Height, ps2_tex->PSM));
|
||||
|
||||
if(!ps2_tex->Mem)
|
||||
{
|
||||
SDL_free(ps2_tex);
|
||||
return SDL_OutOfMemory();
|
||||
}
|
||||
|
||||
texture->driverdata =
|
||||
SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
|
||||
Bmask, Amask);
|
||||
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);
|
||||
if(!ps2_tex->Delayed)
|
||||
{
|
||||
ps2_tex->Vram = gsKit_vram_alloc(gsGlobal, gsKit_texture_size(ps2_tex->Width, ps2_tex->Height, ps2_tex->PSM), GSKIT_ALLOC_USERBUFFER);
|
||||
if(ps2_tex->Vram == GSKIT_ALLOC_ERROR) {
|
||||
printf("VRAM Allocation Failed. Will not upload texture.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Only RLE encode textures without an alpha channel since the RLE coder
|
||||
* discards the color values of pixels with an alpha value of zero.
|
||||
*/
|
||||
if (texture->access == SDL_TEXTUREACCESS_STATIC && !Amask) {
|
||||
SDL_SetSurfaceRLE(texture->driverdata, 1);
|
||||
}
|
||||
if(ps2_tex->Clut != NULL) {
|
||||
if(ps2_tex->PSM == GS_PSM_T4)
|
||||
ps2_tex->VramClut = gsKit_vram_alloc(gsGlobal, gsKit_texture_size(8, 2, GS_PSM_CT32), GSKIT_ALLOC_USERBUFFER);
|
||||
else
|
||||
ps2_tex->VramClut = gsKit_vram_alloc(gsGlobal, gsKit_texture_size(16, 16, GS_PSM_CT32), GSKIT_ALLOC_USERBUFFER);
|
||||
|
||||
if(ps2_tex->VramClut == GSKIT_ALLOC_ERROR)
|
||||
{
|
||||
printf("VRAM CLUT Allocation Failed. Will not upload texture.\n");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
gsKit_texture_upload(gsGlobal, ps2_tex);
|
||||
free(ps2_tex->Mem);
|
||||
ps2_tex->Mem = NULL;
|
||||
if(ps2_tex->Clut != NULL) {
|
||||
free(ps2_tex->Clut);
|
||||
ps2_tex->Clut = NULL;
|
||||
}
|
||||
} else {
|
||||
gsKit_setup_tbw(ps2_tex);
|
||||
}
|
||||
|
||||
texture->driverdata = ps2_tex;
|
||||
|
||||
if (!texture->driverdata) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -326,12 +369,12 @@ static int
|
|||
PS2_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
|
||||
const SDL_Rect * rect, void **pixels, int *pitch)
|
||||
{
|
||||
SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
|
||||
GSTEXTURE *surface = (GSTEXTURE *) texture->driverdata;
|
||||
|
||||
*pixels =
|
||||
(void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
|
||||
rect->x * surface->format->BytesPerPixel);
|
||||
*pitch = surface->pitch;
|
||||
(void *) ((Uint8 *) surface->Mem +
|
||||
gsKit_texture_size_ee(surface->Width, surface->Height, surface->PSM));
|
||||
//*pitch = surface->pitch;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1064,13 +1107,27 @@ PS2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *verti
|
|||
}
|
||||
}
|
||||
|
||||
GSTEXTURE* tex = cmd->data.draw.texture->driverdata;
|
||||
|
||||
for (i = 0; i < count; i += 3, ptr += 3) {
|
||||
SDL_PS2_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);
|
||||
float x1 = ptr[0].dst.x;
|
||||
float y1 = ptr[0].dst.y;
|
||||
|
||||
float x2 = ptr[1].dst.x;
|
||||
float y2 = ptr[1].dst.y;
|
||||
|
||||
float x3 = ptr[2].dst.x;
|
||||
float y3 = ptr[2].dst.y;
|
||||
|
||||
Uint32 c1 = (ptr[0].color.r | (ptr[0].color.g << 8) | (ptr[0].color.b << 16) | (ptr[0].color.a << 24));
|
||||
Uint32 c2 = (ptr[1].color.r | (ptr[1].color.g << 8) | (ptr[1].color.b << 16) | (ptr[1].color.a << 24));
|
||||
Uint32 c3 = (ptr[0].color.r | (ptr[2].color.g << 8) | (ptr[2].color.b << 16) | (ptr[2].color.a << 24));
|
||||
|
||||
if (tex->Delayed == true) {
|
||||
gsKit_TexManager_bind(gsGlobal, tex);
|
||||
}
|
||||
//It still need some works to make texture render on-screen
|
||||
gsKit_prim_triangle_goraud_texture(gsGlobal, tex, x1, y1, 0, 0, x2, y2, 0, 1, x3, y3, 1, 0, 1, c1, c2, c3);
|
||||
}
|
||||
} else {
|
||||
GeometryFillData *ptr = (GeometryFillData *) verts;
|
||||
|
|
@ -1087,8 +1144,21 @@ PS2_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *verti
|
|||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < count; i += 3, ptr += 3) {
|
||||
SDL_PS2_FillTriangle(surface, &(ptr[0].dst), &(ptr[1].dst), &(ptr[2].dst), blend, ptr[0].color, ptr[1].color, ptr[2].color);
|
||||
for (i = 0; i < count; i += 3, ptr += 3) { //These for loops need to be in a separated function
|
||||
float x1 = ptr[0].dst.x;
|
||||
float y1 = ptr[0].dst.y;
|
||||
|
||||
float x2 = ptr[1].dst.x;
|
||||
float y2 = ptr[1].dst.y;
|
||||
|
||||
float x3 = ptr[2].dst.x;
|
||||
float y3 = ptr[2].dst.y;
|
||||
|
||||
Uint32 c1 = (ptr[0].color.r | (ptr[0].color.g << 8) | (ptr[0].color.b << 16) | (ptr[0].color.a << 24));
|
||||
Uint32 c2 = (ptr[1].color.r | (ptr[1].color.g << 8) | (ptr[1].color.b << 16) | (ptr[1].color.a << 24));
|
||||
Uint32 c3 = (ptr[0].color.r | (ptr[2].color.g << 8) | (ptr[2].color.b << 16) | (ptr[2].color.a << 24));
|
||||
|
||||
gsKit_prim_triangle_gouraud(gsGlobal, x1, y1, x2, y2, x3, y3, 1, c1, c2, c3);
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -36,84 +36,6 @@
|
|||
#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++) {
|
||||
PS2_trianglepoint_2_fixedpoint(&points[2 * i + 1]);
|
||||
}
|
||||
return SDL_PS2_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];
|
||||
PS2_trianglepoint_2_fixedpoint(&points_tmp[i]);
|
||||
}
|
||||
return SDL_PS2_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 PS2_trianglepoint_2_fixedpoint(SDL_Point *a) {
|
||||
a->x <<= FP_BITS;
|
||||
a->y <<= FP_BITS;
|
||||
|
|
@ -202,687 +124,6 @@ static void bounding_rect(const SDL_Point *a, const SDL_Point *b, const SDL_Poin
|
|||
} \
|
||||
} \
|
||||
|
||||
int SDL_PS2_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;
|
||||
PS2_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_PS2_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;
|
||||
PS2_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_PS2 && !SDL_RENDER_DISABLED */
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
|
|
|
|||
Loading…
Reference in New Issue