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PS2: Use 4bpp indexed textures in some cases

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This commit is contained in:
UnknownShadow200 2025-06-07 13:25:34 +10:00
parent a0c9da6712
commit dbaa2e5e5d
3 changed files with 144 additions and 42 deletions
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18
src/Graphics_Dreamcast.c
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@ -624,14 +624,6 @@ static CC_INLINE void ConvertTexture_4444(cc_uint16* dst, struct Bitmap* bmp, in
}
}
static CC_INLINE int FindInPalette2(BitmapCol* palette, int pal_count, BitmapCol color) {
for (int i = 0; i < pal_count; i++)
{
if (palette[i] == color) return i;
}
return -1;
}
static CC_INLINE void ConvertTexture_Palette(cc_uint16* dst, struct Bitmap* bmp, int rowWidth, BitmapCol* palette, int pal_count) {
int width = bmp->width >> 1, height = bmp->height >> 1;
unsigned maskX, maskY;
@ -646,10 +638,10 @@ static CC_INLINE void ConvertTexture_Palette(cc_uint16* dst, struct Bitmap* bmp,
for (int x = 0; x < width; x++, src += 2, next += 2)
{
int pal_00 = FindInPalette2(palette, pal_count, src[0]);
int pal_10 = FindInPalette2(palette, pal_count, src[1]);
int pal_01 = FindInPalette2(palette, pal_count, next[0]);
int pal_11 = FindInPalette2(palette, pal_count, next[1]);
int pal_00 = FindInPalette(palette, pal_count, src[0]);
int pal_10 = FindInPalette(palette, pal_count, src[1]);
int pal_01 = FindInPalette(palette, pal_count, next[0]);
int pal_11 = FindInPalette(palette, pal_count, next[1]);
dst[X | Y] = pal_00 | (pal_01 << 4) | (pal_10 << 8) | (pal_11 << 12);
@ -737,7 +729,7 @@ void Gfx_DeleteTexture(GfxResourceID* texId) {
cc_uint32 size = TextureSize(tex);
texmem_free(tex->data, size);
if (tex->format != PVR_TXRFMT_PAL4BPP) {
if (tex->format != PVR_TXRFMT_ARGB4444) {
int index = (tex->format & PVR_TXRFMT_4BPP_PAL(63)) >> 21;
palettes_used[index] = false;
}

147
src/Graphics_PS2.c
View File

@ -15,6 +15,8 @@
#include <draw3d.h>
#include <malloc.h>
#define MAX_PALETTE_ENTRIES 2048
typedef struct Matrix VU0_MATRIX __attribute__((aligned(16)));
typedef struct Vec4 VU0_VECTOR __attribute__((aligned(16)));
typedef struct { int x, y, z, w; } VU0_IVECTOR __attribute__((aligned(16)));
@ -127,7 +129,7 @@ static void InitDrawingEnv(void) {
q = dma_beg + 1;
}
static int tex_offset;
static unsigned clut_offset, tex_offset;
void Gfx_Create(void) {
primitive_type = 0; // PRIM_POINT, which isn't used here
@ -138,6 +140,8 @@ void Gfx_Create(void) {
stateDirty = true;
formatDirty = true;
InitDrawingEnv();
clut_offset = graph_vram_allocate(MAX_PALETTE_ENTRIES, 1, GS_PSM_32, GRAPH_ALIGN_BLOCK);
tex_offset = graph_vram_allocate(256, 256, GS_PSM_32, GRAPH_ALIGN_BLOCK);
// TODO maybe Min not actually needed?
@ -162,6 +166,81 @@ static CC_INLINE void DMAFlushBuffer(void) {
dma_channel_send_chain(DMA_CHANNEL_GIF, dma_beg, q - dma_beg, 0, 0);
}
void Gfx_TransferPixels(void* src, int src_width, int src_height,
int format, unsigned dst_addr, unsigned dst_stride) {
packet_t *packet = packet_init(200, PACKET_NORMAL);
qword_t *Q = packet->data;
Q = draw_texture_transfer(Q, src, src_width, src_height, format, dst_addr, dst_stride);
Q = draw_texture_flush(Q);
dma_channel_send_chain(DMA_CHANNEL_GIF, packet->data, Q - packet->data, 0,0);
dma_wait_fast();
packet_free(packet);
}
/*########################################################################################################################*
*---------------------------------------------------------Palettees--------------------------------------------------------*
*#########################################################################################################################*/
#define MAX_PALETTES (MAX_PALETTE_ENTRIES / 64)
#define MAX_PAL_ENTRIES 8 // Could be 16, but 8 for balance between texture load speed and VRAM usage
static cc_uint8 palettes_used[MAX_PALETTES];
static CC_INLINE int FindInPalette(BitmapCol* palette, int pal_count, BitmapCol color) {
for (int i = 0; i < pal_count; i++)
{
if (palette[i] == color) return i;
}
return -1;
}
static int CalcPalette(BitmapCol* palette, struct Bitmap* bmp, int rowWidth) {
int width = bmp->width, height = bmp->height;
BitmapCol* row = bmp->scan0;
int pal_count = 0;
for (int y = 0; y < height; y++, row += rowWidth)
{
for (int x = 0; x < width; x++)
{
BitmapCol color = row[x];
int idx = FindInPalette(palette, pal_count, color);
if (idx >= 0) continue;
// Too many distinct colours
if (pal_count >= MAX_PAL_ENTRIES) return 0;
palette[pal_count] = color;
pal_count++;
}
}
return pal_count;
}
#define PaletteAddr(index) (clut_offset + (index) * 64)
static void ApplyPalette(BitmapCol* palette, int pal_count, int pal_index) {
palettes_used[pal_index] = true;
dma_wait_fast();
// psm8, w=16 h=16
Gfx_TransferPixels(palette, 8, 2, GS_PSM_32, PaletteAddr(pal_index), 64);
}
static int FindFreePalette(cc_uint8 flags) {
if (flags & TEXTURE_FLAG_DYNAMIC) return -1;
for (int i = 0; i < MAX_PALETTES; i++)
{
if (!palettes_used[i]) return i;
}
return -1;
}
/*########################################################################################################################*
*---------------------------------------------------------Textures--------------------------------------------------------*
@ -174,6 +253,23 @@ typedef struct CCTexture_ {
BitmapCol pixels[]; // aligned to 64 bytes (only need 16?)
} CCTexture;
static void ConvertTexture_Palette(cc_uint8* dst, struct Bitmap* bmp, int rowWidth, BitmapCol* palette, int pal_count) {
int width = bmp->width >> 1, height = bmp->height;
for (int y = 0; y < height; y++)
{
BitmapCol* src = bmp->scan0 + y * rowWidth;
for (int x = 0; x < width; x++, src += 2)
{
int pal_0 = FindInPalette(palette, pal_count, src[0]);
int pal_1 = FindInPalette(palette, pal_count, src[1]);
*dst++ = pal_0 | (pal_1 << 4);
}
}
}
GfxResourceID Gfx_AllocTexture(struct Bitmap* bmp, int rowWidth, cc_uint8 flags, cc_bool mipmaps) {
int size = bmp->width * bmp->height * 4;
CCTexture* tex = (CCTexture*)memalign(16, 64 + size);
@ -182,11 +278,27 @@ GfxResourceID Gfx_AllocTexture(struct Bitmap* bmp, int rowWidth, cc_uint8 flags,
tex->height = bmp->height;
tex->log2_width = draw_log2(bmp->width);
tex->log2_height = draw_log2(bmp->height);
tex->format = GS_PSM_32;
tex->pal_index = 0;
BitmapCol palette[MAX_PAL_ENTRIES] __attribute__((aligned(16)));
int pal_count = 0;
int pal_index = FindFreePalette(flags);
if (pal_index >= 0) {
pal_count = CalcPalette(palette, bmp, rowWidth);
if (pal_count > 0) ApplyPalette(palette, pal_count, pal_index);
}
//Platform_Log2("%i, %i", &pal_index, &pal_count);
if (pal_count > 0) {
tex->format = GS_PSM_4;
tex->pal_index = pal_index;
ConvertTexture_Palette((cc_uint8*)tex->pixels, bmp, rowWidth, palette, pal_count);
} else {
tex->format = GS_PSM_32;
CopyTextureData(tex->pixels, bmp->width * BITMAPCOLOR_SIZE,
bmp, rowWidth * BITMAPCOLOR_SIZE);
}
return tex;
}
@ -194,9 +306,15 @@ static void UpdateTextureBuffer(int context, CCTexture* tex, unsigned buf_addr,
PACK_GIFTAG(q, GIF_SET_TAG(1,0,0,0, GIF_FLG_PACKED, 1), GIF_REG_AD);
q++;
unsigned clut_addr = tex->format == GS_PSM_32 ? 0 : PaletteAddr(tex->pal_index) >> 6;
unsigned clut_entry = 0;
//unsigned clut_addr = tex->format == GS_PSM_32 ? 0 : clut_addr >> 6;
//unsigned clut_entry = tex->format == GS_PSM_32 ? 0 : tex->pal_index;
unsigned clut_mode = tex->format == GS_PSM_32 ? CLUT_NO_LOAD : CLUT_LOAD;
PACK_GIFTAG(q, GS_SET_TEX0(buf_addr >> 6, buf_stride >> 6, tex->format,
tex->log2_width, tex->log2_height, TEXTURE_COMPONENTS_RGBA, TEXTURE_FUNCTION_MODULATE,
0, 0, CLUT_STORAGE_MODE1, 0, CLUT_NO_LOAD), GS_REG_TEX0 + context);
clut_addr, GS_PSM_32, CLUT_STORAGE_MODE1, clut_entry, clut_mode), GS_REG_TEX0 + context);
q++;
}
@ -213,17 +331,8 @@ void Gfx_BindTexture(GfxResourceID texId) {
DMAFlushBuffer();
dma_wait_fast();
packet_t *packet = packet_init(200, PACKET_NORMAL);
qword_t *Q = packet->data;
Q = draw_texture_transfer(Q, tex->pixels, tex->width, tex->height, tex->buffer, dst_addr, dst_stride);
Q = draw_texture_flush(Q);
dma_channel_send_chain(DMA_CHANNEL_GIF, packet->data, Q - packet->data, 0,0);
dma_wait_fast();
packet_free(packet);
Gfx_TransferPixels(tex->pixels, tex->width, tex->height,
tex->format, dst_addr, dst_stride);
// TODO terrible perf
q = dma_beg + 1;
@ -231,8 +340,14 @@ void Gfx_BindTexture(GfxResourceID texId) {
}
void Gfx_DeleteTexture(GfxResourceID* texId) {
GfxResourceID data = *texId;
if (data) Mem_Free(data);
CCTexture* tex = (CCTexture*)(*texId);
if (!tex) return;
if (tex->format != GS_PSM_32) {
palettes_used[tex->pal_index] = false;
}
Mem_Free(tex);
*texId = NULL;
}

13
src/Window_PS2.c
View File

@ -328,21 +328,16 @@ void Window_AllocFramebuffer(struct Bitmap* bmp, int width, int height) {
packet_free(packet);
}
extern void Gfx_TransferPixels(void* src, int src_width, int src_height,
int format, unsigned dst_addr, unsigned dst_stride);
void Window_DrawFramebuffer(Rect2D r, struct Bitmap* bmp) {
// FlushCache bios call https://psi-rockin.github.io/ps2tek/
// mode=0: Flush data cache (invalidate+writeback dirty contents to memory)
FlushCache(0);
packet_t* packet = packet_init(200, PACKET_NORMAL);
qword_t* q = packet->data;
q = draw_texture_transfer(q, bmp->scan0, bmp->width, bmp->height, GS_PSM_32,
Gfx_TransferPixels(bmp->scan0, bmp->width, bmp->height, GS_PSM_32,
fb_colors[0].address, fb_colors[0].width);
q = draw_texture_flush(q);
dma_channel_send_chain(DMA_CHANNEL_GIF, packet->data, q - packet->data, 0, 0);
dma_wait_fast();
packet_free(packet);
}
void Window_FreeFramebuffer(struct Bitmap* bmp) {