Commit 5ac6d000 authored by Sam Lantinga's avatar Sam Lantinga

Added notes on the next steps for SDL 1.3

Moved fill and copy routines to their own files.

--HG--
rename : src/video/SDL_blit_copy.c => src/video/SDL_copy.c
rename : src/video/SDL_blit_copy.h => src/video/SDL_copy.h
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402615
parent beba16ed
...@@ -157,6 +157,16 @@ Change textures to static/streaming. Static textures are not lockable, ...@@ -157,6 +157,16 @@ Change textures to static/streaming. Static textures are not lockable,
streaming textures are lockable and may have system memory pixels available. streaming textures are lockable and may have system memory pixels available.
SDL_compat will use a streaming video texture, and will never be HWSURFACE, SDL_compat will use a streaming video texture, and will never be HWSURFACE,
but may be PREALLOC, if system memory pixels are available. but may be PREALLOC, if system memory pixels are available.
*** DONE Thu Aug 16 14:18:42 PDT 2007
The software renderer will be abstracted so the surface management can be The software renderer will be abstracted so the surface management can be
used by any renderer that provides functions to copy surfaces to the window. used by any renderer that provides functions to copy surfaces to the window.
Blitters...
----
Copy blit and fill rect are optimized with MMX and SSE now.
Here are the pieces we still need:
- Merging SDL texture capabilities into the SDL surface system
- Generic fallback blitter architecture
- Custom fast path blitters
...@@ -24,7 +24,7 @@ ...@@ -24,7 +24,7 @@
#include "SDL_video.h" #include "SDL_video.h"
#include "SDL_sysvideo.h" #include "SDL_sysvideo.h"
#include "SDL_blit.h" #include "SDL_blit.h"
#include "SDL_blit_copy.h" #include "SDL_copy.h"
#include "SDL_RLEaccel_c.h" #include "SDL_RLEaccel_c.h"
#include "SDL_pixels_c.h" #include "SDL_pixels_c.h"
......
...@@ -23,10 +23,38 @@ ...@@ -23,10 +23,38 @@
#include "SDL_video.h" #include "SDL_video.h"
#include "SDL_blit.h" #include "SDL_blit.h"
#include "SDL_blit_copy.h" #include "SDL_copy.h"
#ifdef __SSE__
/* This assumes 16-byte aligned src and dst */
static __inline__ void
SDL_memcpySSE(Uint8 * dst, const Uint8 * src, int len)
{
int i;
__m128 values[4];
for (i = len / 64; i--;) {
_mm_prefetch(src, _MM_HINT_NTA);
values[0] = *(__m128 *) (src + 0);
values[1] = *(__m128 *) (src + 16);
values[2] = *(__m128 *) (src + 32);
values[3] = *(__m128 *) (src + 48);
_mm_stream_ps((float *) (dst + 0), values[0]);
_mm_stream_ps((float *) (dst + 16), values[1]);
_mm_stream_ps((float *) (dst + 32), values[2]);
_mm_stream_ps((float *) (dst + 48), values[3]);
src += 64;
dst += 64;
}
if (len & 63)
SDL_memcpy(dst, src, len & 63);
}
#endif /* __SSE__ */
#ifdef __MMX__ #ifdef __MMX__
/* This assumes 8-byte aligned src and dst */
static __inline__ void static __inline__ void
SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len) SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
{ {
...@@ -60,32 +88,6 @@ SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len) ...@@ -60,32 +88,6 @@ SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
} }
#endif /* __MMX__ */ #endif /* __MMX__ */
#ifdef __SSE__
static __inline__ void
SDL_memcpySSE(Uint8 * dst, const Uint8 * src, int len)
{
int i;
__m128 values[4];
for (i = len / 64; i--;) {
_mm_prefetch(src, _MM_HINT_NTA);
values[0] = *(__m128 *) (src + 0);
values[1] = *(__m128 *) (src + 16);
values[2] = *(__m128 *) (src + 32);
values[3] = *(__m128 *) (src + 48);
_mm_stream_ps((float *) (dst + 0), values[0]);
_mm_stream_ps((float *) (dst + 16), values[1]);
_mm_stream_ps((float *) (dst + 32), values[2]);
_mm_stream_ps((float *) (dst + 48), values[3]);
src += 64;
dst += 64;
}
if (len & 63)
SDL_memcpy(dst, src, len & 63);
}
#endif /* __SSE__ */
void void
SDL_BlitCopy(SDL_BlitInfo * info) SDL_BlitCopy(SDL_BlitInfo * info)
{ {
......
/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#include "SDL_video.h"
#include "SDL_blit.h"
#ifdef __SSE__
/* *INDENT-OFF* */
#ifdef _MSC_VER
#define SSE_BEGIN \
__m128 c128; \
c128.m128_u32[0] = color; \
c128.m128_u32[1] = color; \
c128.m128_u32[2] = color; \
c128.m128_u32[3] = color;
#else
#define SSE_BEGIN \
DECLARE_ALIGNED(Uint32, cccc[4], 16); \
cccc[0] = color; \
cccc[1] = color; \
cccc[2] = color; \
cccc[3] = color; \
__m128 c128 = *(__m128 *)cccc;
#endif
#define SSE_WORK \
for (i = n / 64; i--;) { \
_mm_stream_ps((float *)(p+0), c128); \
_mm_stream_ps((float *)(p+16), c128); \
_mm_stream_ps((float *)(p+32), c128); \
_mm_stream_ps((float *)(p+48), c128); \
p += 64; \
}
#define SSE_END
#define DEFINE_SSE_FILLRECT(bpp, type) \
static void \
SDL_FillRect##bpp##SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
{ \
SSE_BEGIN; \
\
while (h--) { \
int i, n = w * bpp; \
Uint8 *p = pixels; \
\
if (n > 15) { \
int adjust = 16 - ((uintptr_t)p & 15); \
if (adjust < 16) { \
n -= adjust; \
adjust /= bpp; \
while(adjust--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
SSE_WORK; \
} \
if (n & 63) { \
int remainder = (n & 63); \
remainder /= bpp; \
while(remainder--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
pixels += pitch; \
} \
\
SSE_END; \
}
DEFINE_SSE_FILLRECT(1, Uint8)
DEFINE_SSE_FILLRECT(2, Uint16)
DEFINE_SSE_FILLRECT(4, Uint32)
/* *INDENT-ON* */
#endif /* __SSE__ */
#ifdef __MMX__
/* *INDENT-OFF* */
#define MMX_BEGIN \
__m64 c64 = _mm_set_pi32(color, color)
#define MMX_WORK \
for (i = n / 64; i--;) { \
_mm_stream_pi((__m64 *)(p+0), c64); \
_mm_stream_pi((__m64 *)(p+8), c64); \
_mm_stream_pi((__m64 *)(p+16), c64); \
_mm_stream_pi((__m64 *)(p+24), c64); \
_mm_stream_pi((__m64 *)(p+32), c64); \
_mm_stream_pi((__m64 *)(p+40), c64); \
_mm_stream_pi((__m64 *)(p+48), c64); \
_mm_stream_pi((__m64 *)(p+56), c64); \
p += 64; \
}
#define MMX_END \
_mm_empty()
#define DEFINE_MMX_FILLRECT(bpp, type) \
static void \
SDL_FillRect##bpp##MMX(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
{ \
MMX_BEGIN; \
\
while (h--) { \
int i, n = w * bpp; \
Uint8 *p = pixels; \
\
if (n > 7) { \
int adjust = 8 - ((uintptr_t)p & 7); \
if (adjust < 8) { \
n -= adjust; \
adjust /= bpp; \
while(adjust--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
MMX_WORK; \
} \
if (n & 63) { \
int remainder = (n & 63); \
remainder /= bpp; \
while(remainder--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
pixels += pitch; \
} \
\
MMX_END; \
}
DEFINE_MMX_FILLRECT(1, Uint8)
DEFINE_MMX_FILLRECT(2, Uint16)
DEFINE_MMX_FILLRECT(4, Uint32)
/* *INDENT-ON* */
#endif /* __MMX__ */
static void
SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
int n = w;
Uint8 *p = pixels;
if (n > 3) {
switch ((uintptr_t) p & 3) {
case 1:
*p++ = (Uint8) color;
--n;
case 2:
*p++ = (Uint8) color;
--n;
case 3:
*p++ = (Uint8) color;
--n;
}
SDL_memset4(p, color, (n >> 2));
}
if (n & 3) {
p += (n & ~3);
switch (n & 3) {
case 3:
*p++ = (Uint8) color;
case 2:
*p++ = (Uint8) color;
case 1:
*p++ = (Uint8) color;
}
}
pixels += pitch;
}
}
static void
SDL_FillRect2(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
int n = w;
Uint16 *p = (Uint16 *) pixels;
if (n > 1) {
if ((uintptr_t) p & 2) {
*p++ = (Uint16) color;
--n;
}
SDL_memset4(p, color, (n >> 1));
}
if (n & 1) {
p[n - 1] = (Uint16) color;
}
pixels += pitch;
}
}
static void
SDL_FillRect3(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
Uint8 r = (Uint8) ((color >> 16) & 0xFF);
Uint8 g = (Uint8) ((color >> 8) & 0xFF);
Uint8 b = (Uint8) (color & 0xFF);
while (h--) {
int n = w;
Uint8 *p = pixels;
while (n--) {
*p++ = r;
*p++ = g;
*p++ = b;
}
pixels += pitch;
}
}
static void
SDL_FillRect4(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
SDL_memset4(pixels, color, w);
pixels += pitch;
}
}
/*
* This function performs a fast fill of the given rectangle with 'color'
*/
int
SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
{
Uint8 *pixels;
/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
SDL_SetError("SDL_FillRect(): Unsupported surface format");
return (-1);
}
/* If 'dstrect' == NULL, then fill the whole surface */
if (dstrect) {
/* Perform clipping */
if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
return (0);
}
} else {
dstrect = &dst->clip_rect;
}
/* Perform software fill */
if (!dst->pixels) {
SDL_SetError("SDL_FillRect(): You must lock the surface");
return (-1);
}
pixels =
(Uint8 *) dst->pixels + dstrect->y * dst->pitch +
dstrect->x * dst->format->BytesPerPixel;
switch (dst->format->BytesPerPixel) {
case 1:
{
color |= (color << 8);
color |= (color << 16);
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect1SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect1MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect1(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 2:
{
color |= (color << 16);
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect2SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect2MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect2(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 3:
/* 24-bit RGB is a slow path, at least for now. */
{
SDL_FillRect3(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 4:
{
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect4SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect4MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect4(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
}
SDL_UnlockSurface(dst);
/* We're done! */
return (0);
}
/* vi: set ts=4 sw=4 expandtab: */
...@@ -509,342 +509,6 @@ SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect, ...@@ -509,342 +509,6 @@ SDL_UpperBlit(SDL_Surface * src, SDL_Rect * srcrect,
return 0; return 0;
} }
#ifdef __SSE__
/* *INDENT-OFF* */
#ifdef _MSC_VER
#define SSE_BEGIN \
__m128 c128; \
c128.m128_u32[0] = color; \
c128.m128_u32[1] = color; \
c128.m128_u32[2] = color; \
c128.m128_u32[3] = color;
#else
#define SSE_BEGIN \
DECLARE_ALIGNED(Uint32, cccc[4], 16); \
cccc[0] = color; \
cccc[1] = color; \
cccc[2] = color; \
cccc[3] = color; \
__m128 c128 = *(__m128 *)cccc;
#endif
#define SSE_WORK \
for (i = n / 64; i--;) { \
_mm_stream_ps((float *)(p+0), c128); \
_mm_stream_ps((float *)(p+16), c128); \
_mm_stream_ps((float *)(p+32), c128); \
_mm_stream_ps((float *)(p+48), c128); \
p += 64; \
}
#define SSE_END
#define DEFINE_SSE_FILLRECT(bpp, type) \
static void \
SDL_FillRect##bpp##SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
{ \
SSE_BEGIN; \
\
while (h--) { \
int i, n = w * bpp; \
Uint8 *p = pixels; \
\
if (n > 15) { \
int adjust = 16 - ((uintptr_t)p & 15); \
if (adjust < 16) { \
n -= adjust; \
adjust /= bpp; \
while(adjust--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
SSE_WORK; \
} \
if (n & 63) { \
int remainder = (n & 63); \
remainder /= bpp; \
while(remainder--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
pixels += pitch; \
} \
\
SSE_END; \
}
DEFINE_SSE_FILLRECT(1, Uint8)
DEFINE_SSE_FILLRECT(2, Uint16)
DEFINE_SSE_FILLRECT(4, Uint32)
/* *INDENT-ON* */
#endif /* __SSE__ */
#ifdef __MMX__
/* *INDENT-OFF* */
#define MMX_BEGIN \
__m64 c64 = _mm_set_pi32(color, color)
#define MMX_WORK \
for (i = n / 64; i--;) { \
_mm_stream_pi((__m64 *)(p+0), c64); \
_mm_stream_pi((__m64 *)(p+8), c64); \
_mm_stream_pi((__m64 *)(p+16), c64); \
_mm_stream_pi((__m64 *)(p+24), c64); \
_mm_stream_pi((__m64 *)(p+32), c64); \
_mm_stream_pi((__m64 *)(p+40), c64); \
_mm_stream_pi((__m64 *)(p+48), c64); \
_mm_stream_pi((__m64 *)(p+56), c64); \
p += 64; \
}
#define MMX_END \
_mm_empty()
#define DEFINE_MMX_FILLRECT(bpp, type) \
static void \
SDL_FillRect##bpp##MMX(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
{ \
MMX_BEGIN; \
\
while (h--) { \
int i, n = w * bpp; \
Uint8 *p = pixels; \
\
if (n > 7) { \
int adjust = 8 - ((uintptr_t)p & 7); \
if (adjust < 8) { \
n -= adjust; \
adjust /= bpp; \
while(adjust--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
MMX_WORK; \
} \
if (n & 63) { \
int remainder = (n & 63); \
remainder /= bpp; \
while(remainder--) { \
*((type *)p) = (type)color; \
p += bpp; \
} \
} \
pixels += pitch; \
} \
\
MMX_END; \
}
DEFINE_MMX_FILLRECT(1, Uint8)
DEFINE_MMX_FILLRECT(2, Uint16)
DEFINE_MMX_FILLRECT(4, Uint32)
/* *INDENT-ON* */
#endif /* __MMX__ */
static void
SDL_FillRect1(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
int n = w;
Uint8 *p = pixels;
if (n > 3) {
switch ((uintptr_t) p & 3) {
case 1:
*p++ = (Uint8) color;
--n;
case 2:
*p++ = (Uint8) color;
--n;
case 3:
*p++ = (Uint8) color;
--n;
}
SDL_memset4(p, color, (n >> 2));
}
if (n & 3) {
p += (n & ~3);
switch (n & 3) {
case 3:
*p++ = (Uint8) color;
case 2:
*p++ = (Uint8) color;
case 1:
*p++ = (Uint8) color;
}
}
pixels += pitch;
}
}
static void
SDL_FillRect2(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
int n = w;
Uint16 *p = (Uint16 *) pixels;
if (n > 1) {
if ((uintptr_t) p & 2) {
*p++ = (Uint16) color;
--n;
}
SDL_memset4(p, color, (n >> 1));
}
if (n & 1) {
p[n - 1] = (Uint16) color;
}
pixels += pitch;
}
}
static void
SDL_FillRect3(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
Uint8 r = (Uint8) (color & 0xFF);
Uint8 g = (Uint8) ((color >> 8) & 0xFF);
Uint8 b = (Uint8) ((color >> 16) & 0xFF);
while (h--) {
int n = w;
Uint8 *p = pixels;
while (n--) {
*p++ = r;
*p++ = g;
*p++ = b;
}
pixels += pitch;
}
}
static void
SDL_FillRect4(Uint8 * pixels, int pitch, Uint32 color, int w, int h)
{
while (h--) {
SDL_memset4(pixels, color, w);
pixels += pitch;
}
}
/*
* This function performs a fast fill of the given rectangle with 'color'
*/
int
SDL_FillRect(SDL_Surface * dst, SDL_Rect * dstrect, Uint32 color)
{
Uint8 *pixels;
/* This function doesn't work on surfaces < 8 bpp */
if (dst->format->BitsPerPixel < 8) {
SDL_SetError("Fill rect on unsupported surface format");
return (-1);
}
/* If 'dstrect' == NULL, then fill the whole surface */
if (dstrect) {
/* Perform clipping */
if (!SDL_IntersectRect(dstrect, &dst->clip_rect, dstrect)) {
return (0);
}
} else {
dstrect = &dst->clip_rect;
}
/* Perform software fill */
if (SDL_LockSurface(dst) != 0) {
return (-1);
}
pixels =
(Uint8 *) dst->pixels + dstrect->y * dst->pitch +
dstrect->x * dst->format->BytesPerPixel;
switch (dst->format->BytesPerPixel) {
case 1:
{
color |= (color << 8);
color |= (color << 16);
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect1SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect1MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect1(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 2:
{
color |= (color << 16);
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect2SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect2MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect2(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 3:
/* 24-bit RGB is a slow path, at least for now. */
{
SDL_FillRect3(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
case 4:
{
#ifdef __SSE__
if (SDL_HasSSE()) {
SDL_FillRect4SSE(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
#ifdef __MMX__
if (SDL_HasMMX()) {
SDL_FillRect4MMX(pixels, dst->pitch, color, dstrect->w,
dstrect->h);
break;
}
#endif
SDL_FillRect4(pixels, dst->pitch, color, dstrect->w, dstrect->h);
break;
}
}
SDL_UnlockSurface(dst);
/* We're done! */
return (0);
}
/* /*
* Lock a surface to directly access the pixels * Lock a surface to directly access the pixels
*/ */
......
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