#include "xmlpool.h"
+#define TILE_INDEX_DXT1 0
+#define TILE_INDEX_8 1
+#define TILE_INDEX_16 2
+#define TILE_INDEX_DXTn 3
+#define TILE_INDEX_32 4
+
/* On Savage4 the texure LOD-bias needs an offset of ~ 0.3 to get
* somewhere close to software rendering.
*/
#define SAVAGE4_LOD_OFFSET 10
+/* Tile info for S3TC formats counts in 4x4 blocks instead of texels.
+ * In DXT1 each block is encoded in 64 bits. In DXT3 and 5 each block is
+ * encoded in 128 bits. */
+
/* Size 1, 2 and 4 images are packed into the last subtile. Each image
* is repeated to fill a 4x4 pixel area. The figure below shows the
* layout of those 4x4 pixel areas in the 8x8 subtile.
* Yuck! 8-bit texture formats use 4x8 subtiles. See below.
*/
static const savageTileInfo tileInfo_pro[5] = {
- {64, 64, 8, 8, 8, 8, {0x12, 0x02}}, /* 4-bit */
+ {16, 16, 16, 8, 1, 2, {0x18, 0x10}}, /* DXT1 */
{64, 32, 16, 4, 4, 8, {0x30, 0x20}}, /* 8-bit */
{64, 16, 8, 2, 8, 8, {0x48, 0x08}}, /* 16-bit */
- { 0, 0, 0, 0, 0, 0, {0x00, 0x00}}, /* 24-bit */
+ {16, 8, 16, 4, 1, 2, {0x30, 0x20}}, /* DXT3, DXT5 */
{32, 16, 4, 2, 8, 8, {0x90, 0x10}}, /* 32-bit */
};
* x 1
*/
static const savageTileInfo tileInfo_s3d_s4[5] = {
- {64, 64, 16, 8, 4, 8, {0x18, 0x10}}, /* 4-bit */
+ {16, 16, 16, 8, 1, 2, {0x18, 0x10}}, /* DXT1 */
{64, 32, 16, 4, 4, 8, {0x30, 0x20}}, /* 8-bit */
{64, 16, 16, 2, 4, 8, {0x60, 0x40}}, /* 16-bit */
- { 0, 0, 0, 0, 0, 0, {0x00, 0x00}}, /* 24-bit */
+ {16, 8, 16, 4, 1, 2, {0x30, 0x20}}, /* DXT3, DXT5 */
{32, 16, 8, 2, 4, 8, {0xc0, 0x80}}, /* 32-bit */
};
SUBTILE_FUNC(16, 8)
SUBTILE_FUNC(32, 8) /* 4 bytes per pixel, 8 pixels wide */
+SUBTILE_FUNC(8, 2) /* DXT1 */
+SUBTILE_FUNC(16, 2) /* DXT3 and DXT5 */
+
/** \brief Upload a complete tile from src (srcStride) to dest
*
* \param tileInfo Pointer to tiling information
switch (subStride) {
case 2: subtileFunc = savageUploadSubtile_2x8; break;
case 4: subtileFunc = savageUploadSubtile_4x8; break;
- case 8: subtileFunc = savageUploadSubtile_8x8; break;
- case 16: subtileFunc = savageUploadSubtile_16x8; break;
+ case 8: subtileFunc = tileInfo->subHeight == 8 ?
+ savageUploadSubtile_8x8 : savageUploadSubtile_8x2; break;
+ case 16: subtileFunc = tileInfo->subHeight == 8 ?
+ savageUploadSubtile_16x8 : savageUploadSubtile_16x2; break;
case 32: subtileFunc = savageUploadSubtile_32x8; break;
default: assert(0);
}
* FIXME: Repeating inside this function would be more efficient.
*/
static void savageUploadTiny (const savageTileInfo *tileInfo,
+ GLuint pixWidth, GLuint pixHeight,
GLuint width, GLuint height, GLuint bpp,
GLubyte *src, GLubyte *dest) {
- GLuint size = MAX2(width, height);
+ GLuint size = MAX2(pixWidth, pixHeight);
if (width > tileInfo->subWidth) { /* assert: height <= subtile height */
GLuint wInSub = width / tileInfo->subWidth;
GLuint srcStride = width * bpp;
GLuint subStride = tileInfo->subWidth * bpp;
/* if the subtile width is 4 we have to skip every other subtile */
- GLuint subSkip = tileInfo->subWidth == 4 ?
+ GLuint subSkip = tileInfo->subWidth <= 4 ?
subStride * tileInfo->subHeight : 0;
+ GLuint skipRemainder = tileInfo->subHeight - 1;
GLuint y;
for (y = 0; y < height; ++y) {
memcpy (dest, src, srcStride);
src += srcStride;
dest += subStride;
- if ((y & 7) == 7)
+ if ((y & skipRemainder) == skipRemainder)
dest += subSkip;
}
} else { /* the last 3 mipmap levels */
{
const struct gl_texture_image *image = t->base.tObj->Image[0][level];
const savageTileInfo *tileInfo = t->tileInfo;
- GLuint width = image->Width2, height = image->Height2;
+ GLuint pixWidth = image->Width2, pixHeight = image->Height2;
GLuint bpp = t->texelBytes;
+ GLuint width, height;
/* FIXME: Need triangle (rather than pixel) fallbacks to simulate
* this using normal textured triangles.
fprintf (stderr, "Not supported texture border %d.\n",
(int) image->Border);
- if (width >= 8 && height >= tileInfo->subHeight) {
+ if (t->hwFormat == TFT_S3TC4A4Bit || t->hwFormat == TFT_S3TC4CA4Bit ||
+ t->hwFormat == TFT_S3TC4Bit) {
+ width = (pixWidth+3) / 4;
+ height = (pixHeight+3) / 4;
+ } else {
+ width = pixWidth;
+ height = pixHeight;
+ }
+
+ if (pixWidth >= 8 && pixHeight >= 8) {
GLuint *dirtyPtr = t->image[level].dirtyTiles;
GLuint dirtyMask = 1;
}
} else {
GLuint minHeight, minWidth, hRepeat, vRepeat, x, y;
- if (width > 4 || height > 4) {
+ if (t->hwFormat == TFT_S3TC4A4Bit || t->hwFormat == TFT_S3TC4CA4Bit ||
+ t->hwFormat == TFT_S3TC4Bit)
+ minWidth = minHeight = 1;
+ else
+ minWidth = minHeight = 4;
+ if (width > minWidth || height > minHeight) {
minWidth = tileInfo->subWidth;
minHeight = tileInfo->subHeight;
- } else {
- minWidth = 4;
- minHeight = 4;
}
hRepeat = width >= minWidth ? 1 : minWidth / width;
vRepeat = height >= minHeight ? 1 : minHeight / height;
for (y = 0; y < vRepeat; ++y) {
GLuint offset = y * tileInfo->subWidth*height * bpp;
for (x = 0; x < hRepeat; ++x) {
- savageUploadTiny (tileInfo, width, height, bpp, image->Data,
+ savageUploadTiny (tileInfo, pixWidth, pixHeight,
+ width, height, bpp, image->Data,
(GLubyte *)(t->bufAddr +
t->image[level].offset+offset));
offset += width * bpp;
return 64 * bpp;
}
+/** \brief Compute the destination size of a compressed texture image
+ */
+static GLuint savageCompressedTexImageSize (GLuint width, GLuint height,
+ GLuint bpp) {
+ width = (width+3) / 4;
+ height = (height+3) / 4;
+ /* full subtiles */
+ if (width >= 2 && height >= 2)
+ return width * height * bpp;
+ /* special case for the last three mipmap levels: the hardware computes
+ * the offset internally */
+ else if (width <= 1 && height <= 1)
+ return 0;
+ /* partially filled sub tiles waste memory
+ * on Savage3D and Savage4 with subtile width 4 every other subtile is
+ * skipped if width < 8 so we can assume a uniform subtile width of 8 */
+ else if (width >= 2)
+ return width * 2 * bpp;
+ else if (height >= 2)
+ return 2 * height * bpp;
+ else
+ return 4 * bpp;
+}
+
/** \brief Compute the number of (partial) tiles of a texture image
*/
static GLuint savageTexImageTiles (GLuint width, GLuint height,
return !force16bpt ? &_mesa_texformat_argb8888 :
&_mesa_texformat_argb4444;
#endif
+
+ case GL_RGB_S3TC:
+ case GL_RGB4_S3TC:
+ case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ return &_mesa_texformat_rgb_dxt1;
+ case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+ return &_mesa_texformat_rgba_dxt1;
+
+ case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+ return &_mesa_texformat_rgba_dxt3;
+
+ case GL_RGBA_S3TC:
+ case GL_RGBA4_S3TC:
+ if (!isSavage4)
+ /* Not the best choice but Savage3D/MX/IX don't support DXT3 or DXT5. */
+ return &_mesa_texformat_rgba_dxt1;
+ /* fall through */
+ case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+ return &_mesa_texformat_rgba_dxt5;
+
/*
case GL_COLOR_INDEX:
case GL_COLOR_INDEX1_EXT:
{
savageTexObjPtr t = (savageTexObjPtr) tObj->DriverData;
struct gl_texture_image *image = tObj->Image[0][tObj->BaseLevel];
- GLuint offset, i, textureFormat, size;
+ GLuint offset, i, textureFormat, tileIndex, size;
GLint firstLevel, lastLevel;
assert(t);
switch (image->TexFormat->MesaFormat) {
case MESA_FORMAT_ARGB8888:
textureFormat = TFT_ARGB8888;
- t->texelBytes = 4;
+ t->texelBytes = tileIndex = 4;
break;
case MESA_FORMAT_ARGB1555:
textureFormat = TFT_ARGB1555;
- t->texelBytes = 2;
+ t->texelBytes = tileIndex = 2;
break;
case MESA_FORMAT_ARGB4444:
textureFormat = TFT_ARGB4444;
- t->texelBytes = 2;
+ t->texelBytes = tileIndex = 2;
break;
case MESA_FORMAT_RGB565:
textureFormat = TFT_RGB565;
- t->texelBytes = 2;
+ t->texelBytes = tileIndex = 2;
break;
case MESA_FORMAT_L8:
textureFormat = TFT_L8;
- t->texelBytes = 1;
+ t->texelBytes = tileIndex = 1;
break;
case MESA_FORMAT_I8:
textureFormat = TFT_I8;
- t->texelBytes = 1;
+ t->texelBytes = tileIndex = 1;
break;
case MESA_FORMAT_A8:
textureFormat = TFT_A8;
- t->texelBytes = 1;
+ t->texelBytes = tileIndex = 1;
+ break;
+ case MESA_FORMAT_RGB_DXT1:
+ textureFormat = TFT_S3TC4Bit;
+ tileIndex = TILE_INDEX_DXT1;
+ t->texelBytes = 8;
+ break;
+ case MESA_FORMAT_RGBA_DXT1:
+ textureFormat = TFT_S3TC4Bit;
+ tileIndex = TILE_INDEX_DXT1;
+ t->texelBytes = 8;
+ break;
+ case MESA_FORMAT_RGBA_DXT3:
+ textureFormat = TFT_S3TC4A4Bit;
+ tileIndex = TILE_INDEX_DXTn;
+ t->texelBytes = 16;
+ break;
+ case MESA_FORMAT_RGBA_DXT5:
+ textureFormat = TFT_S3TC4CA4Bit;
+ tileIndex = TILE_INDEX_DXTn;
+ t->texelBytes = 16;
break;
default:
_mesa_problem(imesa->glCtx, "Bad texture format in %s", __FUNCTION__);
}
t->hwFormat = textureFormat;
- /* Select tiling format depending on the chipset and bytes per texel */
+ /* Select tiling format depending on the chipset and texture format */
if (imesa->savageScreen->chipset <= S3_SAVAGE4)
- t->tileInfo = &tileInfo_s3d_s4[t->texelBytes];
+ t->tileInfo = &tileInfo_s3d_s4[tileIndex];
else
- t->tileInfo = &tileInfo_pro[t->texelBytes];
+ t->tileInfo = &tileInfo_pro[tileIndex];
/* Compute which mipmap levels we really want to send to the hardware.
*/
t->image[i].offset = offset;
image = tObj->Image[0][i];
- size = savageTexImageSize (image->Width2, image->Height2,
- t->texelBytes);
+ if (t->texelBytes >= 8)
+ size = savageCompressedTexImageSize (image->Width2, image->Height2,
+ t->texelBytes);
+ else
+ size = savageTexImageSize (image->Width2, image->Height2,
+ t->texelBytes);
offset += size;
}
/* the last three mipmap levels don't add to the offset. They are packed
* into 64 pixels. */
if (size == 0)
- t->base.totalSize += 64 * t->texelBytes;
+ t->base.totalSize += (t->texelBytes >= 8 ? 4 : 64) * t->texelBytes;
/* 2k-aligned (really needed?) */
t->base.totalSize = (t->base.totalSize + 2047UL) & ~2047UL;
}
SAVAGE_CONTEXT(ctx)->new_state |= SAVAGE_NEW_TEXTURE;
}
+static void
+savageCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
+ GLint internalFormat,
+ GLint width, GLint height, GLint border,
+ GLsizei imageSize, const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage )
+{
+ savageTexObjPtr t = (savageTexObjPtr) texObj->DriverData;
+ if (t) {
+ savageTexImageChanged (t);
+ } else {
+ t = savageAllocTexObj(texObj);
+ if (!t) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCompressedTexImage2D");
+ return;
+ }
+ }
+ _mesa_store_compressed_teximage2d( ctx, target, level, internalFormat,
+ width, height, border, imageSize,
+ data, texObj, texImage );
+ t->base.dirty_images[0] |= (1 << level);
+ SAVAGE_CONTEXT(ctx)->new_state |= SAVAGE_NEW_TEXTURE;
+}
+
+static void
+savageCompressedTexSubImage2D( GLcontext *ctx,
+ GLenum target,
+ GLint level,
+ GLint xoffset, GLint yoffset,
+ GLsizei width, GLsizei height,
+ GLenum format, GLsizei imageSize,
+ const GLvoid *data,
+ struct gl_texture_object *texObj,
+ struct gl_texture_image *texImage )
+{
+ savageTexObjPtr t = (savageTexObjPtr) texObj->DriverData;
+ assert( t ); /* this _should_ be true */
+ if (t) {
+ savageTexImageChanged (t);
+ savageMarkDirtyTiles(t, level, texImage->Width2, texImage->Height2,
+ xoffset, yoffset, width, height);
+ } else {
+ t = savageAllocTexObj(texObj);
+ if (!t) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage2D");
+ return;
+ }
+ t->base.dirty_images[0] |= (1 << level);
+ }
+ _mesa_store_compressed_texsubimage2d(ctx, target, level, xoffset, yoffset,
+ width, height, format, imageSize,
+ data, texObj, texImage);
+ t->dirtySubImages |= (1 << level);
+ SAVAGE_CONTEXT(ctx)->new_state |= SAVAGE_NEW_TEXTURE;
+}
+
static void savageTexParameter( GLcontext *ctx, GLenum target,
struct gl_texture_object *tObj,
GLenum pname, const GLfloat *params )
functions->TexSubImage1D = savageTexSubImage1D;
functions->TexImage2D = savageTexImage2D;
functions->TexSubImage2D = savageTexSubImage2D;
+ functions->CompressedTexImage2D = savageCompressedTexImage2D;
+ functions->CompressedTexSubImage2D = savageCompressedTexSubImage2D;
functions->BindTexture = savageBindTexture;
functions->NewTextureObject = savageNewTextureObject;
functions->DeleteTexture = savageDeleteTexture;
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