diff options
Diffstat (limited to 'src/gallium')
-rw-r--r-- | src/gallium/auxiliary/util/u_gen_mipmap.c | 609 |
1 files changed, 607 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c index f0b822929e..8ca06281ab 100644 --- a/src/gallium/auxiliary/util/u_gen_mipmap.c +++ b/src/gallium/auxiliary/util/u_gen_mipmap.c @@ -34,6 +34,7 @@ #include "pipe/p_context.h" +#include "pipe/p_debug.h" #include "pipe/p_defines.h" #include "pipe/p_inlines.h" #include "pipe/p_util.h" @@ -48,6 +49,612 @@ #include "tgsi/util/tgsi_parse.h" + +enum dtype +{ + UBYTE, + UBYTE_3_3_2, + USHORT, + USHORT_4_4_4_4, + USHORT_5_6_5, + USHORT_1_5_5_5_REV, + UINT, + FLOAT, + HALF_FLOAT +}; + + +typedef ushort half_float; + + +#if 0 +extern half_float +float_to_half(float f); + +extern float +half_to_float(half_float h); +#endif + + +/** + * Average together two rows of a source image to produce a single new + * row in the dest image. It's legal for the two source rows to point + * to the same data. The source width must be equal to either the + * dest width or two times the dest width. + * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc. + * \param comps number of components per pixel (1..4) + */ +static void +do_row(enum dtype datatype, uint comps, int srcWidth, + const void *srcRowA, const void *srcRowB, + int dstWidth, void *dstRow) +{ + const uint k0 = (srcWidth == dstWidth) ? 0 : 1; + const uint colStride = (srcWidth == dstWidth) ? 1 : 2; + + assert(comps >= 1); + assert(comps <= 4); + + /* This assertion is no longer valid with non-power-of-2 textures + assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth); + */ + + if (datatype == UBYTE && comps == 4) { + uint i, j, k; + const ubyte(*rowA)[4] = (const ubyte(*)[4]) srcRowA; + const ubyte(*rowB)[4] = (const ubyte(*)[4]) srcRowB; + ubyte(*dst)[4] = (ubyte(*)[4]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; + dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; + dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; + } + } + else if (datatype == UBYTE && comps == 3) { + uint i, j, k; + const ubyte(*rowA)[3] = (const ubyte(*)[3]) srcRowA; + const ubyte(*rowB)[3] = (const ubyte(*)[3]) srcRowB; + ubyte(*dst)[3] = (ubyte(*)[3]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; + dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; + } + } + else if (datatype == UBYTE && comps == 2) { + uint i, j, k; + const ubyte(*rowA)[2] = (const ubyte(*)[2]) srcRowA; + const ubyte(*rowB)[2] = (const ubyte(*)[2]) srcRowB; + ubyte(*dst)[2] = (ubyte(*)[2]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) >> 2; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2; + } + } + else if (datatype == UBYTE && comps == 1) { + uint i, j, k; + const ubyte *rowA = (const ubyte *) srcRowA; + const ubyte *rowB = (const ubyte *) srcRowB; + ubyte *dst = (ubyte *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2; + } + } + + else if (datatype == USHORT && comps == 4) { + uint i, j, k; + const ushort(*rowA)[4] = (const ushort(*)[4]) srcRowA; + const ushort(*rowB)[4] = (const ushort(*)[4]) srcRowB; + ushort(*dst)[4] = (ushort(*)[4]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; + dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; + dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; + } + } + else if (datatype == USHORT && comps == 3) { + uint i, j, k; + const ushort(*rowA)[3] = (const ushort(*)[3]) srcRowA; + const ushort(*rowB)[3] = (const ushort(*)[3]) srcRowB; + ushort(*dst)[3] = (ushort(*)[3]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; + dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; + } + } + else if (datatype == USHORT && comps == 2) { + uint i, j, k; + const ushort(*rowA)[2] = (const ushort(*)[2]) srcRowA; + const ushort(*rowB)[2] = (const ushort(*)[2]) srcRowB; + ushort(*dst)[2] = (ushort(*)[2]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; + dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; + } + } + else if (datatype == USHORT && comps == 1) { + uint i, j, k; + const ushort *rowA = (const ushort *) srcRowA; + const ushort *rowB = (const ushort *) srcRowB; + ushort *dst = (ushort *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; + } + } + + else if (datatype == FLOAT && comps == 4) { + uint i, j, k; + const float(*rowA)[4] = (const float(*)[4]) srcRowA; + const float(*rowB)[4] = (const float(*)[4]) srcRowB; + float(*dst)[4] = (float(*)[4]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + + rowB[j][0] + rowB[k][0]) * 0.25F; + dst[i][1] = (rowA[j][1] + rowA[k][1] + + rowB[j][1] + rowB[k][1]) * 0.25F; + dst[i][2] = (rowA[j][2] + rowA[k][2] + + rowB[j][2] + rowB[k][2]) * 0.25F; + dst[i][3] = (rowA[j][3] + rowA[k][3] + + rowB[j][3] + rowB[k][3]) * 0.25F; + } + } + else if (datatype == FLOAT && comps == 3) { + uint i, j, k; + const float(*rowA)[3] = (const float(*)[3]) srcRowA; + const float(*rowB)[3] = (const float(*)[3]) srcRowB; + float(*dst)[3] = (float(*)[3]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + + rowB[j][0] + rowB[k][0]) * 0.25F; + dst[i][1] = (rowA[j][1] + rowA[k][1] + + rowB[j][1] + rowB[k][1]) * 0.25F; + dst[i][2] = (rowA[j][2] + rowA[k][2] + + rowB[j][2] + rowB[k][2]) * 0.25F; + } + } + else if (datatype == FLOAT && comps == 2) { + uint i, j, k; + const float(*rowA)[2] = (const float(*)[2]) srcRowA; + const float(*rowB)[2] = (const float(*)[2]) srcRowB; + float(*dst)[2] = (float(*)[2]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i][0] = (rowA[j][0] + rowA[k][0] + + rowB[j][0] + rowB[k][0]) * 0.25F; + dst[i][1] = (rowA[j][1] + rowA[k][1] + + rowB[j][1] + rowB[k][1]) * 0.25F; + } + } + else if (datatype == FLOAT && comps == 1) { + uint i, j, k; + const float *rowA = (const float *) srcRowA; + const float *rowB = (const float *) srcRowB; + float *dst = (float *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F; + } + } + +#if 0 + else if (datatype == HALF_FLOAT && comps == 4) { + uint i, j, k, comp; + const half_float(*rowA)[4] = (const half_float(*)[4]) srcRowA; + const half_float(*rowB)[4] = (const half_float(*)[4]) srcRowB; + half_float(*dst)[4] = (half_float(*)[4]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + for (comp = 0; comp < 4; comp++) { + float aj, ak, bj, bk; + aj = half_to_float(rowA[j][comp]); + ak = half_to_float(rowA[k][comp]); + bj = half_to_float(rowB[j][comp]); + bk = half_to_float(rowB[k][comp]); + dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F); + } + } + } + else if (datatype == HALF_FLOAT && comps == 3) { + uint i, j, k, comp; + const half_float(*rowA)[3] = (const half_float(*)[3]) srcRowA; + const half_float(*rowB)[3] = (const half_float(*)[3]) srcRowB; + half_float(*dst)[3] = (half_float(*)[3]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + for (comp = 0; comp < 3; comp++) { + float aj, ak, bj, bk; + aj = half_to_float(rowA[j][comp]); + ak = half_to_float(rowA[k][comp]); + bj = half_to_float(rowB[j][comp]); + bk = half_to_float(rowB[k][comp]); + dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F); + } + } + } + else if (datatype == HALF_FLOAT && comps == 2) { + uint i, j, k, comp; + const half_float(*rowA)[2] = (const half_float(*)[2]) srcRowA; + const half_float(*rowB)[2] = (const half_float(*)[2]) srcRowB; + half_float(*dst)[2] = (half_float(*)[2]) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + for (comp = 0; comp < 2; comp++) { + float aj, ak, bj, bk; + aj = half_to_float(rowA[j][comp]); + ak = half_to_float(rowA[k][comp]); + bj = half_to_float(rowB[j][comp]); + bk = half_to_float(rowB[k][comp]); + dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F); + } + } + } + else if (datatype == HALF_FLOAT && comps == 1) { + uint i, j, k; + const half_float *rowA = (const half_float *) srcRowA; + const half_float *rowB = (const half_float *) srcRowB; + half_float *dst = (half_float *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + float aj, ak, bj, bk; + aj = half_to_float(rowA[j]); + ak = half_to_float(rowA[k]); + bj = half_to_float(rowB[j]); + bk = half_to_float(rowB[k]); + dst[i] = float_to_half((aj + ak + bj + bk) * 0.25F); + } + } +#endif + + else if (datatype == UINT && comps == 1) { + uint i, j, k; + const uint *rowA = (const uint *) srcRowA; + const uint *rowB = (const uint *) srcRowB; + float *dst = (float *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + dst[i] = rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4; + } + } + + else if (datatype == USHORT_5_6_5 && comps == 3) { + uint i, j, k; + const ushort *rowA = (const ushort *) srcRowA; + const ushort *rowB = (const ushort *) srcRowB; + ushort *dst = (ushort *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + const int rowAr0 = rowA[j] & 0x1f; + const int rowAr1 = rowA[k] & 0x1f; + const int rowBr0 = rowB[j] & 0x1f; + const int rowBr1 = rowB[k] & 0x1f; + const int rowAg0 = (rowA[j] >> 5) & 0x3f; + const int rowAg1 = (rowA[k] >> 5) & 0x3f; + const int rowBg0 = (rowB[j] >> 5) & 0x3f; + const int rowBg1 = (rowB[k] >> 5) & 0x3f; + const int rowAb0 = (rowA[j] >> 11) & 0x1f; + const int rowAb1 = (rowA[k] >> 11) & 0x1f; + const int rowBb0 = (rowB[j] >> 11) & 0x1f; + const int rowBb1 = (rowB[k] >> 11) & 0x1f; + const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; + const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; + const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; + dst[i] = (blue << 11) | (green << 5) | red; + } + } + else if (datatype == USHORT_4_4_4_4 && comps == 4) { + uint i, j, k; + const ushort *rowA = (const ushort *) srcRowA; + const ushort *rowB = (const ushort *) srcRowB; + ushort *dst = (ushort *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + const int rowAr0 = rowA[j] & 0xf; + const int rowAr1 = rowA[k] & 0xf; + const int rowBr0 = rowB[j] & 0xf; + const int rowBr1 = rowB[k] & 0xf; + const int rowAg0 = (rowA[j] >> 4) & 0xf; + const int rowAg1 = (rowA[k] >> 4) & 0xf; + const int rowBg0 = (rowB[j] >> 4) & 0xf; + const int rowBg1 = (rowB[k] >> 4) & 0xf; + const int rowAb0 = (rowA[j] >> 8) & 0xf; + const int rowAb1 = (rowA[k] >> 8) & 0xf; + const int rowBb0 = (rowB[j] >> 8) & 0xf; + const int rowBb1 = (rowB[k] >> 8) & 0xf; + const int rowAa0 = (rowA[j] >> 12) & 0xf; + const int rowAa1 = (rowA[k] >> 12) & 0xf; + const int rowBa0 = (rowB[j] >> 12) & 0xf; + const int rowBa1 = (rowB[k] >> 12) & 0xf; + const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; + const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; + const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; + const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; + dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red; + } + } + else if (datatype == USHORT_1_5_5_5_REV && comps == 4) { + uint i, j, k; + const ushort *rowA = (const ushort *) srcRowA; + const ushort *rowB = (const ushort *) srcRowB; + ushort *dst = (ushort *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + const int rowAr0 = rowA[j] & 0x1f; + const int rowAr1 = rowA[k] & 0x1f; + const int rowBr0 = rowB[j] & 0x1f; + const int rowBr1 = rowB[k] & 0xf; + const int rowAg0 = (rowA[j] >> 5) & 0x1f; + const int rowAg1 = (rowA[k] >> 5) & 0x1f; + const int rowBg0 = (rowB[j] >> 5) & 0x1f; + const int rowBg1 = (rowB[k] >> 5) & 0x1f; + const int rowAb0 = (rowA[j] >> 10) & 0x1f; + const int rowAb1 = (rowA[k] >> 10) & 0x1f; + const int rowBb0 = (rowB[j] >> 10) & 0x1f; + const int rowBb1 = (rowB[k] >> 10) & 0x1f; + const int rowAa0 = (rowA[j] >> 15) & 0x1; + const int rowAa1 = (rowA[k] >> 15) & 0x1; + const int rowBa0 = (rowB[j] >> 15) & 0x1; + const int rowBa1 = (rowB[k] >> 15) & 0x1; + const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; + const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; + const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; + const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; + dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red; + } + } + else if (datatype == UBYTE_3_3_2 && comps == 3) { + uint i, j, k; + const ubyte *rowA = (const ubyte *) srcRowA; + const ubyte *rowB = (const ubyte *) srcRowB; + ubyte *dst = (ubyte *) dstRow; + for (i = j = 0, k = k0; i < (uint) dstWidth; + i++, j += colStride, k += colStride) { + const int rowAr0 = rowA[j] & 0x3; + const int rowAr1 = rowA[k] & 0x3; + const int rowBr0 = rowB[j] & 0x3; + const int rowBr1 = rowB[k] & 0x3; + const int rowAg0 = (rowA[j] >> 2) & 0x7; + const int rowAg1 = (rowA[k] >> 2) & 0x7; + const int rowBg0 = (rowB[j] >> 2) & 0x7; + const int rowBg1 = (rowB[k] >> 2) & 0x7; + const int rowAb0 = (rowA[j] >> 5) & 0x7; + const int rowAb1 = (rowA[k] >> 5) & 0x7; + const int rowBb0 = (rowB[j] >> 5) & 0x7; + const int rowBb1 = (rowB[k] >> 5) & 0x7; + const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; + const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; + const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; + dst[i] = (blue << 5) | (green << 2) | red; + } + } + else { + debug_printf("bad format in do_row()"); + } +} + + +static void +format_to_type_comps(enum pipe_format pformat, + enum dtype *datatype, uint *comps) +{ + switch (pformat) { + case PIPE_FORMAT_A8R8G8B8_UNORM: + case PIPE_FORMAT_B8G8R8A8_UNORM: + *datatype = UBYTE; + *comps = 4; + return; + case PIPE_FORMAT_A1R5G5B5_UNORM: + *datatype = USHORT_1_5_5_5_REV; + *comps = 4; + return; + case PIPE_FORMAT_A4R4G4B4_UNORM: + *datatype = USHORT_4_4_4_4; + *comps = 4; + return; + case PIPE_FORMAT_R5G6B5_UNORM: + *datatype = USHORT_5_6_5; + *comps = 3; + return; + case PIPE_FORMAT_U_L8: + case PIPE_FORMAT_U_A8: + case PIPE_FORMAT_U_I8: + *datatype = UBYTE; + *comps = 1; + return; + case PIPE_FORMAT_U_A8_L8: + *datatype = UBYTE; + *comps = 2; + return; + default: + assert(0); + } +} + + +static void +reduce_1d(enum pipe_format pformat, + int srcWidth, const ubyte *srcPtr, + int dstWidth, ubyte *dstPtr) +{ + enum dtype datatype; + uint comps; + + format_to_type_comps(pformat, &datatype, &comps); + + /* we just duplicate the input row, kind of hack, saves code */ + do_row(datatype, comps, + srcWidth, srcPtr, srcPtr, + dstWidth, dstPtr); +} + + +/** + * Strides are in bytes. If zero, it'll be computed as width * bpp. + */ +static void +reduce_2d(enum pipe_format pformat, + int srcWidth, int srcHeight, + int srcRowStride, const ubyte *srcPtr, + int dstWidth, int dstHeight, + int dstRowStride, ubyte *dstPtr) +{ + enum dtype datatype; + uint comps; + const int bpt = pf_get_size(pformat); + const ubyte *srcA, *srcB; + ubyte *dst; + int row; + + format_to_type_comps(pformat, &datatype, &comps); + + if (!srcRowStride) + srcRowStride = bpt * srcWidth; + + if (!dstRowStride) + dstRowStride = bpt * dstWidth; + + /* Compute src and dst pointers */ + srcA = srcPtr; + if (srcHeight > 1) + srcB = srcA + srcRowStride; + else + srcB = srcA; + dst = dstPtr; + + for (row = 0; row < dstHeight; row++) { + do_row(datatype, comps, + srcWidth, srcA, srcB, + dstWidth, dst); + srcA += 2 * srcRowStride; + srcB += 2 * srcRowStride; + dst += dstRowStride; + } +} + + +static void +make_1d_mipmap(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_winsys *winsys = pipe->winsys; + const uint zslice = 0; + uint dstLevel; + + for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { + const uint srcLevel = dstLevel - 1; + struct pipe_surface *srcSurf, *dstSurf; + void *srcMap, *dstMap; + + srcSurf = screen->get_tex_surface(screen, pt, face, srcLevel, zslice); + dstSurf = screen->get_tex_surface(screen, pt, face, dstLevel, zslice); + + srcMap = ((ubyte *) winsys->buffer_map(winsys, srcSurf->buffer, + PIPE_BUFFER_USAGE_CPU_READ) + + srcSurf->offset); + dstMap = ((ubyte *) winsys->buffer_map(winsys, dstSurf->buffer, + PIPE_BUFFER_USAGE_CPU_WRITE) + + dstSurf->offset); + + reduce_1d(pt->format, + srcSurf->width, srcMap, + dstSurf->width, dstMap); + + winsys->buffer_unmap(winsys, srcSurf->buffer); + winsys->buffer_unmap(winsys, dstSurf->buffer); + + pipe_surface_reference(&srcSurf, NULL); + pipe_surface_reference(&dstSurf, NULL); + } +} + + +static void +make_2d_mipmap(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel) +{ + struct pipe_context *pipe = ctx->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_winsys *winsys = pipe->winsys; + const uint zslice = 0; + uint dstLevel; + const int bpt = pf_get_size(pt->format); + + for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { + const uint srcLevel = dstLevel - 1; + struct pipe_surface *srcSurf, *dstSurf; + ubyte *srcMap, *dstMap; + + srcSurf = screen->get_tex_surface(screen, pt, face, srcLevel, zslice); + dstSurf = screen->get_tex_surface(screen, pt, face, dstLevel, zslice); + + srcMap = ((ubyte *) winsys->buffer_map(winsys, srcSurf->buffer, + PIPE_BUFFER_USAGE_CPU_READ) + + srcSurf->offset); + dstMap = ((ubyte *) winsys->buffer_map(winsys, dstSurf->buffer, + PIPE_BUFFER_USAGE_CPU_WRITE) + + dstSurf->offset); + + reduce_2d(pt->format, + srcSurf->width, srcSurf->height, + srcSurf->pitch * bpt, srcMap, + dstSurf->width, dstSurf->height, + dstSurf->pitch * bpt, dstMap); + + winsys->buffer_unmap(winsys, srcSurf->buffer); + winsys->buffer_unmap(winsys, dstSurf->buffer); + + pipe_surface_reference(&srcSurf, NULL); + pipe_surface_reference(&dstSurf, NULL); + } +} + + +static void +make_3d_mipmap(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel) +{ +} + + +static void +fallback_gen_mipmap(struct gen_mipmap_state *ctx, + struct pipe_texture *pt, + uint face, uint baseLevel, uint lastLevel) +{ + switch (pt->target) { + case PIPE_TEXTURE_1D: + make_1d_mipmap(ctx, pt, face, baseLevel, lastLevel); + break; + case PIPE_TEXTURE_2D: + case PIPE_TEXTURE_CUBE: + make_2d_mipmap(ctx, pt, face, baseLevel, lastLevel); + break; + case PIPE_TEXTURE_3D: + make_3d_mipmap(ctx, pt, face, baseLevel, lastLevel); + break; + default: + assert(0); + } +} + + /** * Make simple fragment shader: * TEX OUT[0], IN[0], SAMP[0], 2D; @@ -415,9 +1022,7 @@ util_gen_mipmap(struct gen_mipmap_state *ctx, /* check if we can render in the texture's format */ if (!screen->is_format_supported(screen, pt->format, PIPE_SURFACE)) { -#if 0 fallback_gen_mipmap(ctx, pt, face, baseLevel, lastLevel); -#endif return; } |