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mesa: added texstore function for signed 16-bit formats

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This commit is contained in:
Brian Paul 2010-05-09 18:32:32 -06:00
parent 6274bb865f
commit 279056f803
1 changed files with 74 additions and 4 deletions
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78
src/mesa/main/texstore.c
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@ -2224,6 +2224,76 @@ _mesa_texstore_al1616(TEXSTORE_PARAMS)
}
static GLboolean
_mesa_texstore_signed_rgba_16(TEXSTORE_PARAMS)
{
const GLuint texelBytes = _mesa_get_format_bytes(dstFormat);
const GLenum baseFormat = _mesa_get_format_base_format(dstFormat);
ASSERT(dstFormat == MESA_FORMAT_SIGNED_R_16 ||
dstFormat == MESA_FORMAT_SIGNED_RG_16 ||
dstFormat == MESA_FORMAT_SIGNED_RGB_16 ||
dstFormat == MESA_FORMAT_SIGNED_RGBA_16);
if (!ctx->_ImageTransferState &&
!srcPacking->SwapBytes &&
baseInternalFormat == GL_RGBA &&
dstFormat == MESA_FORMAT_SIGNED_RGBA_16 &&
srcFormat == GL_RGBA &&
srcType == GL_SHORT) {
/* simple memcpy path */
memcpy_texture(ctx, dims,
dstFormat, dstAddr, dstXoffset, dstYoffset, dstZoffset,
dstRowStride,
dstImageOffsets,
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
}
else {
/* general path */
const GLfloat *tempImage = make_temp_float_image(ctx, dims,
baseInternalFormat,
baseFormat,
srcWidth, srcHeight, srcDepth,
srcFormat, srcType, srcAddr,
srcPacking);
const GLfloat *src = tempImage;
const GLuint comps = _mesa_get_format_bytes(dstFormat) / 2;
GLint img, row, col;
if (!tempImage)
return GL_FALSE;
_mesa_adjust_image_for_convolution(ctx, dims, &srcWidth, &srcHeight);
/* Note: tempImage is always float[4] / RGBA. We convert to 1, 2,
* 3 or 4 components/pixel here.
*/
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = (GLubyte *) dstAddr
+ dstImageOffsets[dstZoffset + img] * texelBytes
+ dstYoffset * dstRowStride
+ dstXoffset * texelBytes;
for (row = 0; row < srcHeight; row++) {
GLshort *dstRowS = (GLshort *) dstRow;
for (col = 0; col < srcWidth; col++) {
GLuint c;
for (c = 0; c < comps; c++) {
GLshort p;
UNCLAMPED_FLOAT_TO_SHORT(p, src[col * 4 + c]);
dstRowS[col * comps + c] = p;
}
}
dstRow += dstRowStride;
src += 4 * srcWidth;
}
}
free((void *) tempImage);
}
return GL_TRUE;
}
static GLboolean
_mesa_texstore_rgb332(TEXSTORE_PARAMS)
{
@ -3347,10 +3417,10 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_SIGNED_RGBA8888, _mesa_texstore_signed_rgba8888 },
{ MESA_FORMAT_SIGNED_RGBA8888_REV, _mesa_texstore_signed_rgba8888 },
{ MESA_FORMAT_SIGNED_R_16, NULL/*_mesa_texstore_signed_r16*/ },
{ MESA_FORMAT_SIGNED_RG_16, NULL/*_mesa_texstore_signed_rg16*/ },
{ MESA_FORMAT_SIGNED_RGB_16, NULL/*_mesa_texstore_signed_rgb16*/ },
{ MESA_FORMAT_SIGNED_RGBA_16, NULL/*_mesa_texstore_signed_rgba16*/ },
{ MESA_FORMAT_SIGNED_R_16, _mesa_texstore_signed_rgba_16 },
{ MESA_FORMAT_SIGNED_RG_16, _mesa_texstore_signed_rgba_16 },
{ MESA_FORMAT_SIGNED_RGB_16, _mesa_texstore_signed_rgba_16 },
{ MESA_FORMAT_SIGNED_RGBA_16, _mesa_texstore_signed_rgba_16 }
};