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-rw-r--r--sword2/driver/render.cpp109
1 files changed, 47 insertions, 62 deletions
diff --git a/sword2/driver/render.cpp b/sword2/driver/render.cpp
index eeb79188a0..5b05d4958f 100644
--- a/sword2/driver/render.cpp
+++ b/sword2/driver/render.cpp
@@ -277,36 +277,28 @@ uint8 xblocks[MAXLAYERS];
uint8 yblocks[MAXLAYERS];
uint8 restoreLayer[MAXLAYERS];
-// Each layer is composed by several sub-blocks
+// blockSurfaces stores an array of sub-blocks for each of the parallax layers.
-Surface **blockSurfaces[MAXLAYERS] = { 0, 0, 0, 0, 0 };
+typedef struct {
+ byte data[BLOCKWIDTH * BLOCKHEIGHT];
+ bool transparent;
+} BlockSurface;
+BlockSurface **blockSurfaces[MAXLAYERS] = { 0, 0, 0, 0, 0 };
-
-void Surface::clear() {
- memset(_pixels, 0, _width * _height);
- g_sword2->_system->copy_rect(_pixels, _width, 0, 0, _width, _height);
-}
-
-void Surface::blit(Surface *s, ScummVM::Rect *r) {
- ScummVM::Rect clip_rect;
-
- clip_rect.left = 0;
- clip_rect.top = 0;
- clip_rect.right = 640;
- clip_rect.bottom = 480;
-
- blit(s, r, &clip_rect);
+void UploadRect(ScummVM::Rect *r) {
+ g_system->copy_rect(lpBackBuffer + r->top * screenWide + r->left,
+ screenWide, r->left, r->top, r->right - r->left, r->bottom - r->top);
}
-void Surface::blit(Surface *s, ScummVM::Rect *r, ScummVM::Rect *clip_rect) {
+void BlitBlockSurface(BlockSurface *s, ScummVM::Rect *r, ScummVM::Rect *clip_rect) {
if (r->top > clip_rect->bottom || r->left > clip_rect->right || r->bottom <= clip_rect->top || r->right <= clip_rect->left)
return;
- byte *src = s->_pixels;
+ byte *src = s->data;
if (r->top < clip_rect->top) {
- src -= s->_width * (r->top - clip_rect->top);
+ src -= BLOCKWIDTH * (r->top - clip_rect->top);
r->top = clip_rect->top;
}
if (r->left < clip_rect->left) {
@@ -318,29 +310,27 @@ void Surface::blit(Surface *s, ScummVM::Rect *r, ScummVM::Rect *clip_rect) {
if (r->right > clip_rect->right)
r->right = clip_rect->right;
- byte *dst = _pixels + r->top * _width + r->left;
+ byte *dst = lpBackBuffer + r->top * screenWide + r->left;
int i, j;
- // FIXME: We first render the data to the back buffer, and then copy
- // it to the backend. Since the same area will probably be copied
- // several times, as each new parallax layer is rendered, this may be
- // a bit inefficient.
-
- for (i = 0; i < r->bottom - r->top; i++) {
- for (j = 0; j < r->right - r->left; j++) {
- if (src[j])
- dst[j] = src[j];
+ if (s->transparent) {
+ for (i = 0; i < r->bottom - r->top; i++) {
+ for (j = 0; j < r->right - r->left; j++) {
+ if (src[j])
+ dst[j] = src[j];
+ }
+ src += BLOCKWIDTH;
+ dst += screenWide;
+ }
+ } else {
+ for (i = 0; i < r->bottom - r->top; i++) {
+ memcpy(dst, src, r->right - r->left);
+ src += BLOCKWIDTH;
+ dst += screenWide;
}
- src += s->_width;
- dst += _width;
}
- UploadRect(r);
-}
-
-void UploadRect(ScummVM::Rect *r) {
- g_system->copy_rect(lpBackBuffer->_pixels + r->top * lpBackBuffer->_width + r->left,
- lpBackBuffer->_width, r->left, r->top, r->right - r->left, r->bottom - r->top);
+ // UploadRect(r);
}
#define SCALE_MAXWIDTH 512
@@ -445,7 +435,7 @@ void SquashImage(byte *dst, uint16 dstPitch, uint16 dstWidth, uint16 dstHeight,
dst[x] = QuickMatch((uint8) (red / count), (uint8) (green / count), (uint8) (blue / count));
}
dst += dstPitch;
- backbuf += lpBackBuffer->_width;
+ backbuf += screenWide;
}
} else {
for (y = 0; y < dstHeight; y++) {
@@ -606,7 +596,7 @@ int32 RestoreBackgroundLayer(_parallax *p, int16 l)
if (blockSurfaces[l]) {
for (i = 0; i < xblocks[l] * yblocks[l]; i++)
if (blockSurfaces[l][i])
- delete blockSurfaces[l][i];
+ free(blockSurfaces[l][i]);
free(blockSurfaces[l]);
blockSurfaces[l] = NULL;
@@ -920,8 +910,6 @@ int32 RenderParallax(_parallax *p, int16 l) {
int16 i, j;
ScummVM::Rect r;
- debug(9, "RenderParallax %d", l);
-
if (locationWide == screenWide)
x = 0;
else
@@ -937,9 +925,9 @@ int32 RenderParallax(_parallax *p, int16 l) {
// Leave enough space for the top and bottom menues
clip_rect.left = 0;
- clip_rect.right = 640;
- clip_rect.top = 40;
- clip_rect.bottom = 440;
+ clip_rect.right = screenWide;
+ clip_rect.top = MENUDEEP;
+ clip_rect.bottom = screenDeep - MENUDEEP;
for (j = 0; j < yblocks[l]; j++) {
for (i = 0; i < xblocks[l]; i++) {
@@ -948,7 +936,7 @@ int32 RenderParallax(_parallax *p, int16 l) {
r.right = r.left + BLOCKWIDTH;
r.top = j * BLOCKHEIGHT - y + 40;
r.bottom = r.top + BLOCKHEIGHT;
- lpBackBuffer->blit(blockSurfaces[l][i + j * xblocks[l]], &r, &clip_rect);
+ BlitBlockSurface(blockSurfaces[l][i + j * xblocks[l]], &r, &clip_rect);
}
}
}
@@ -956,7 +944,7 @@ int32 RenderParallax(_parallax *p, int16 l) {
parallaxScrollx = scrollx - x;
parallaxScrolly = scrolly - y;
- return(RD_OK);
+ return RD_OK;
}
@@ -1078,7 +1066,6 @@ int32 CopyScreenBuffer(void) {
int32 InitialiseBackgroundLayer(_parallax *p) {
uint8 *memchunk;
- uint32 *quaddata;
uint8 zeros;
uint16 count;
uint16 i, j, k;
@@ -1105,7 +1092,7 @@ int32 InitialiseBackgroundLayer(_parallax *p) {
xblocks[layer] = (p->w + BLOCKWIDTH - 1) >> BLOCKWBITS;
yblocks[layer] = (p->h + BLOCKHEIGHT - 1) >> BLOCKHBITS;
- blockSurfaces[layer] = (Surface **) calloc(xblocks[layer] * yblocks[layer], sizeof(Surface *));
+ blockSurfaces[layer] = (BlockSurface **) calloc(xblocks[layer] * yblocks[layer], sizeof(BlockSurface *));
if (!blockSurfaces[layer])
return RDERR_OUTOFMEMORY;
@@ -1160,36 +1147,34 @@ int32 InitialiseBackgroundLayer(_parallax *p) {
for (i = 0; i < xblocks[layer] * yblocks[layer]; i++) {
bool block_has_data = false;
+ bool block_is_transparent = false;
data = memchunk + (p->w * BLOCKHEIGHT * (i / xblocks[layer])) + BLOCKWIDTH * (i % xblocks[layer]);
- quaddata = (uint32 *) data;
-
for (j = 0; j < BLOCKHEIGHT; j++) {
- for (k = 0; k < BLOCKWIDTH / 4; k++) {
- if (*quaddata) {
+ for (k = 0; k < BLOCKWIDTH; k++) {
+ if (data[j * p->w + k])
block_has_data = true;
- goto bailout;
- }
- quaddata++;
+ else
+ block_is_transparent = true;
}
- quaddata += ((p->w - BLOCKWIDTH) / 4);
}
-bailout:
-
// Only assign a surface to the block if it contains data.
if (block_has_data) {
- blockSurfaces[layer][i] = new Surface(BLOCKWIDTH, BLOCKHEIGHT);
+ blockSurfaces[layer][i] = (BlockSurface *) malloc(sizeof(BlockSurface));
// Copy the data into the surfaces.
- dst = blockSurfaces[layer][i]->_pixels;
+ dst = blockSurfaces[layer][i]->data;
for (j = 0; j < BLOCKHEIGHT; j++) {
memcpy(dst, data, BLOCKWIDTH);
data += p->w;
dst += BLOCKWIDTH;
}
+
+ blockSurfaces[layer][i]->transparent = block_is_transparent;
+
} else
blockSurfaces[layer][i] = NULL;
}
@@ -1209,7 +1194,7 @@ int32 CloseBackgroundLayer(void) {
if (blockSurfaces[j]) {
for (i = 0; i < xblocks[j] * yblocks[j]; i++)
if (blockSurfaces[j][i])
- delete blockSurfaces[j][i];
+ free(blockSurfaces[j][i]);
free(blockSurfaces[j]);
blockSurfaces[j] = NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-17 06:51:30 +0000