From f83f5ec8f5f1159cfd0ec2596ceab725c073266e Mon Sep 17 00:00:00 2001 From: Ian Romanick <ian.d.romanick@intel.com> Date: Fri, 19 Dec 2008 13:03:51 -0800 Subject: Add do_row_3d for mipmapping 3D textures Previously 3D textures were mipmapped using multiple passed through the 2D mipmap generation code. This had 3 disadvantages. First, the extra passes were slow. Second, this required the allocation of a temporary buffer to hold intermediate data. Third, and most important, the extra passes caused loss of additional bits due to integer division / bit-shifting. With this change, our mipmapgen conformance test passes for non-compressed texture formats. --- src/mesa/main/mipmap.c | 465 ++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 444 insertions(+), 21 deletions(-) (limited to 'src/mesa/main') diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c index 78d14b21c45..9e051ace25b 100644 --- a/src/mesa/main/mipmap.c +++ b/src/mesa/main/mipmap.c @@ -45,6 +45,67 @@ bytes_per_pixel(GLenum datatype, GLuint comps) } +/** + * \name Support macros for do_row and do_row_3d + * + * The macro madness is here for two reasons. First, it compacts the code + * slightly. Second, it makes it much easier to adjust the specifics of the + * filter to tune the rounding characteristics. + */ +/*@{*/ +#define DECLARE_ROW_POINTERS(t, e) \ + const t(*rowA)[e] = (const t(*)[e]) srcRowA; \ + const t(*rowB)[e] = (const t(*)[e]) srcRowB; \ + const t(*rowC)[e] = (const t(*)[e]) srcRowC; \ + const t(*rowD)[e] = (const t(*)[e]) srcRowD; \ + t(*dst)[e] = (t(*)[e]) dstRow + +#define DECLARE_ROW_POINTERS0(t) \ + const t *rowA = (const t *) srcRowA; \ + const t *rowB = (const t *) srcRowB; \ + const t *rowC = (const t *) srcRowC; \ + const t *rowD = (const t *) srcRowD; \ + t *dst = (t *) dstRow + +#define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ + ((unsigned) Aj + (unsigned) Ak \ + + (unsigned) Bj + (unsigned) Bk \ + + (unsigned) Cj + (unsigned) Ck \ + + (unsigned) Dj + (unsigned) Dk \ + + 4) >> 3 + +#define FILTER_3D(e) \ + do { \ + dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \ + rowB[j][e], rowB[k][e], \ + rowC[j][e], rowC[k][e], \ + rowD[j][e], rowD[k][e]); \ + } while(0) + +#define FILTER_F_3D(e) \ + do { \ + dst[i][e] = (rowA[j][e] + rowA[k][e] \ + + rowB[j][e] + rowB[k][e] \ + + rowC[j][e] + rowC[k][e] \ + + rowD[j][e] + rowD[k][e]) * 0.125F; \ + } while(0) + +#define FILTER_HF_3D(e) \ + do { \ + const GLfloat aj = _mesa_half_to_float(rowA[j][e]); \ + const GLfloat ak = _mesa_half_to_float(rowA[k][e]); \ + const GLfloat bj = _mesa_half_to_float(rowB[j][e]); \ + const GLfloat bk = _mesa_half_to_float(rowB[k][e]); \ + const GLfloat cj = _mesa_half_to_float(rowC[j][e]); \ + const GLfloat ck = _mesa_half_to_float(rowC[k][e]); \ + const GLfloat dj = _mesa_half_to_float(rowD[j][e]); \ + const GLfloat dk = _mesa_half_to_float(rowD[k][e]); \ + dst[i][e] = _mesa_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \ + * 0.125F); \ + } while(0) +/*@}*/ + + /** * 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 @@ -412,6 +473,384 @@ do_row(GLenum datatype, GLuint comps, GLint srcWidth, } +/** + * Average together four 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 pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT, + * \c GL_FLOAT, etc. + * \param comps number of components per pixel (1..4) + * \param srcWidth Width of a row in the source data + * \param srcRowA Pointer to one of the rows of source data + * \param srcRowB Pointer to one of the rows of source data + * \param srcRowC Pointer to one of the rows of source data + * \param srcRowD Pointer to one of the rows of source data + * \param dstWidth Width of a row in the destination data + * \param srcRowA Pointer to the row of destination data + */ +static void +do_row_3D(GLenum datatype, GLuint comps, GLint srcWidth, + const GLvoid *srcRowA, const GLvoid *srcRowB, + const GLvoid *srcRowC, const GLvoid *srcRowD, + GLint dstWidth, GLvoid *dstRow) +{ + const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1; + const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2; + GLuint i, j, k; + + ASSERT(comps >= 1); + ASSERT(comps <= 4); + + if ((datatype == GL_UNSIGNED_BYTE) && (comps == 4)) { + DECLARE_ROW_POINTERS(GLubyte, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + FILTER_3D(2); + FILTER_3D(3); + } + } + else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 3)) { + DECLARE_ROW_POINTERS(GLubyte, 3); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + FILTER_3D(2); + } + } + else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 2)) { + DECLARE_ROW_POINTERS(GLubyte, 2); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + } + } + else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 1)) { + DECLARE_ROW_POINTERS(GLubyte, 1); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + } + } + else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 4)) { + DECLARE_ROW_POINTERS(GLushort, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + FILTER_3D(2); + FILTER_3D(3); + } + } + else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 3)) { + DECLARE_ROW_POINTERS(GLushort, 3); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + FILTER_3D(2); + } + } + else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 2)) { + DECLARE_ROW_POINTERS(GLushort, 2); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + FILTER_3D(1); + } + } + else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 1)) { + DECLARE_ROW_POINTERS(GLushort, 1); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_3D(0); + } + } + else if ((datatype == GL_FLOAT) && (comps == 4)) { + DECLARE_ROW_POINTERS(GLfloat, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_F_3D(0); + FILTER_F_3D(1); + FILTER_F_3D(2); + FILTER_F_3D(3); + } + } + else if ((datatype == GL_FLOAT) && (comps == 3)) { + DECLARE_ROW_POINTERS(GLfloat, 3); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_F_3D(0); + FILTER_F_3D(1); + FILTER_F_3D(2); + } + } + else if ((datatype == GL_FLOAT) && (comps == 2)) { + DECLARE_ROW_POINTERS(GLfloat, 2); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_F_3D(0); + FILTER_F_3D(1); + } + } + else if ((datatype == GL_FLOAT) && (comps == 1)) { + DECLARE_ROW_POINTERS(GLfloat, 1); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_F_3D(0); + } + } + else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 4)) { + DECLARE_ROW_POINTERS(GLhalfARB, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_HF_3D(0); + FILTER_HF_3D(1); + FILTER_HF_3D(2); + FILTER_HF_3D(3); + } + } + else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 3)) { + DECLARE_ROW_POINTERS(GLhalfARB, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_HF_3D(0); + FILTER_HF_3D(1); + FILTER_HF_3D(2); + } + } + else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 2)) { + DECLARE_ROW_POINTERS(GLhalfARB, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_HF_3D(0); + FILTER_HF_3D(1); + } + } + else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 1)) { + DECLARE_ROW_POINTERS(GLhalfARB, 4); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + FILTER_HF_3D(0); + } + } + else if ((datatype == GL_UNSIGNED_INT) && (comps == 1)) { + const GLuint *rowA = (const GLuint *) srcRowA; + const GLuint *rowB = (const GLuint *) srcRowB; + const GLuint *rowC = (const GLuint *) srcRowC; + const GLuint *rowD = (const GLuint *) srcRowD; + GLfloat *dst = (GLfloat *) dstRow; + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + const uint64_t tmp = (((uint64_t) rowA[j] + (uint64_t) rowA[k]) + + ((uint64_t) rowB[j] + (uint64_t) rowB[k]) + + ((uint64_t) rowC[j] + (uint64_t) rowC[k]) + + ((uint64_t) rowD[j] + (uint64_t) rowD[k])); + dst[i] = (GLfloat)((double) tmp * 0.125); + } + } + else if ((datatype == GL_UNSIGNED_SHORT_5_6_5) && (comps == 3)) { + DECLARE_ROW_POINTERS0(GLushort); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + const GLint rowAr0 = rowA[j] & 0x1f; + const GLint rowAr1 = rowA[k] & 0x1f; + const GLint rowBr0 = rowB[j] & 0x1f; + const GLint rowBr1 = rowB[k] & 0x1f; + const GLint rowCr0 = rowC[j] & 0x1f; + const GLint rowCr1 = rowC[k] & 0x1f; + const GLint rowDr0 = rowD[j] & 0x1f; + const GLint rowDr1 = rowD[k] & 0x1f; + const GLint rowAg0 = (rowA[j] >> 5) & 0x3f; + const GLint rowAg1 = (rowA[k] >> 5) & 0x3f; + const GLint rowBg0 = (rowB[j] >> 5) & 0x3f; + const GLint rowBg1 = (rowB[k] >> 5) & 0x3f; + const GLint rowCg0 = (rowC[j] >> 5) & 0x3f; + const GLint rowCg1 = (rowC[k] >> 5) & 0x3f; + const GLint rowDg0 = (rowD[j] >> 5) & 0x3f; + const GLint rowDg1 = (rowD[k] >> 5) & 0x3f; + const GLint rowAb0 = (rowA[j] >> 11) & 0x1f; + const GLint rowAb1 = (rowA[k] >> 11) & 0x1f; + const GLint rowBb0 = (rowB[j] >> 11) & 0x1f; + const GLint rowBb1 = (rowB[k] >> 11) & 0x1f; + const GLint rowCb0 = (rowC[j] >> 11) & 0x1f; + const GLint rowCb1 = (rowC[k] >> 11) & 0x1f; + const GLint rowDb0 = (rowD[j] >> 11) & 0x1f; + const GLint rowDb1 = (rowD[k] >> 11) & 0x1f; + const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, + rowCr0, rowCr1, rowDr0, rowDr1); + const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, + rowCg0, rowCg1, rowDg0, rowDg1); + const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, + rowCb0, rowCb1, rowDb0, rowDb1); + dst[i] = (b << 11) | (g << 5) | r; + } + } + else if ((datatype == GL_UNSIGNED_SHORT_4_4_4_4) && (comps == 4)) { + DECLARE_ROW_POINTERS0(GLushort); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + const GLint rowAr0 = rowA[j] & 0xf; + const GLint rowAr1 = rowA[k] & 0xf; + const GLint rowBr0 = rowB[j] & 0xf; + const GLint rowBr1 = rowB[k] & 0xf; + const GLint rowCr0 = rowC[j] & 0xf; + const GLint rowCr1 = rowC[k] & 0xf; + const GLint rowDr0 = rowD[j] & 0xf; + const GLint rowDr1 = rowD[k] & 0xf; + const GLint rowAg0 = (rowA[j] >> 4) & 0xf; + const GLint rowAg1 = (rowA[k] >> 4) & 0xf; + const GLint rowBg0 = (rowB[j] >> 4) & 0xf; + const GLint rowBg1 = (rowB[k] >> 4) & 0xf; + const GLint rowCg0 = (rowC[j] >> 4) & 0xf; + const GLint rowCg1 = (rowC[k] >> 4) & 0xf; + const GLint rowDg0 = (rowD[j] >> 4) & 0xf; + const GLint rowDg1 = (rowD[k] >> 4) & 0xf; + const GLint rowAb0 = (rowA[j] >> 8) & 0xf; + const GLint rowAb1 = (rowA[k] >> 8) & 0xf; + const GLint rowBb0 = (rowB[j] >> 8) & 0xf; + const GLint rowBb1 = (rowB[k] >> 8) & 0xf; + const GLint rowCb0 = (rowC[j] >> 8) & 0xf; + const GLint rowCb1 = (rowC[k] >> 8) & 0xf; + const GLint rowDb0 = (rowD[j] >> 8) & 0xf; + const GLint rowDb1 = (rowD[k] >> 8) & 0xf; + const GLint rowAa0 = (rowA[j] >> 12) & 0xf; + const GLint rowAa1 = (rowA[k] >> 12) & 0xf; + const GLint rowBa0 = (rowB[j] >> 12) & 0xf; + const GLint rowBa1 = (rowB[k] >> 12) & 0xf; + const GLint rowCa0 = (rowC[j] >> 12) & 0xf; + const GLint rowCa1 = (rowC[k] >> 12) & 0xf; + const GLint rowDa0 = (rowD[j] >> 12) & 0xf; + const GLint rowDa1 = (rowD[k] >> 12) & 0xf; + const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, + rowCr0, rowCr1, rowDr0, rowDr1); + const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, + rowCg0, rowCg1, rowDg0, rowDg1); + const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, + rowCb0, rowCb1, rowDb0, rowDb1); + const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, + rowCa0, rowCa1, rowDa0, rowDa1); + + dst[i] = (a << 12) | (b << 8) | (g << 4) | r; + } + } + else if ((datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV) && (comps == 4)) { + DECLARE_ROW_POINTERS0(GLushort); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + const GLint rowAr0 = rowA[j] & 0x1f; + const GLint rowAr1 = rowA[k] & 0x1f; + const GLint rowBr0 = rowB[j] & 0x1f; + const GLint rowBr1 = rowB[k] & 0x1f; + const GLint rowCr0 = rowC[j] & 0x1f; + const GLint rowCr1 = rowC[k] & 0x1f; + const GLint rowDr0 = rowD[j] & 0x1f; + const GLint rowDr1 = rowD[k] & 0x1f; + const GLint rowAg0 = (rowA[j] >> 5) & 0x1f; + const GLint rowAg1 = (rowA[k] >> 5) & 0x1f; + const GLint rowBg0 = (rowB[j] >> 5) & 0x1f; + const GLint rowBg1 = (rowB[k] >> 5) & 0x1f; + const GLint rowCg0 = (rowC[j] >> 5) & 0x1f; + const GLint rowCg1 = (rowC[k] >> 5) & 0x1f; + const GLint rowDg0 = (rowD[j] >> 5) & 0x1f; + const GLint rowDg1 = (rowD[k] >> 5) & 0x1f; + const GLint rowAb0 = (rowA[j] >> 10) & 0x1f; + const GLint rowAb1 = (rowA[k] >> 10) & 0x1f; + const GLint rowBb0 = (rowB[j] >> 10) & 0x1f; + const GLint rowBb1 = (rowB[k] >> 10) & 0x1f; + const GLint rowCb0 = (rowC[j] >> 10) & 0x1f; + const GLint rowCb1 = (rowC[k] >> 10) & 0x1f; + const GLint rowDb0 = (rowD[j] >> 10) & 0x1f; + const GLint rowDb1 = (rowD[k] >> 10) & 0x1f; + const GLint rowAa0 = (rowA[j] >> 15) & 0x1; + const GLint rowAa1 = (rowA[k] >> 15) & 0x1; + const GLint rowBa0 = (rowB[j] >> 15) & 0x1; + const GLint rowBa1 = (rowB[k] >> 15) & 0x1; + const GLint rowCa0 = (rowC[j] >> 15) & 0x1; + const GLint rowCa1 = (rowC[k] >> 15) & 0x1; + const GLint rowDa0 = (rowD[j] >> 15) & 0x1; + const GLint rowDa1 = (rowD[k] >> 15) & 0x1; + const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, + rowCr0, rowCr1, rowDr0, rowDr1); + const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, + rowCg0, rowCg1, rowDg0, rowDg1); + const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, + rowCb0, rowCb1, rowDb0, rowDb1); + const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, + rowCa0, rowCa1, rowDa0, rowDa1); + + dst[i] = (a << 15) | (b << 10) | (g << 5) | r; + } + } + else if ((datatype == GL_UNSIGNED_BYTE_3_3_2) && (comps == 3)) { + DECLARE_ROW_POINTERS0(GLushort); + + for (i = j = 0, k = k0; i < (GLuint) dstWidth; + i++, j += colStride, k += colStride) { + const GLint rowAr0 = rowA[j] & 0x3; + const GLint rowAr1 = rowA[k] & 0x3; + const GLint rowBr0 = rowB[j] & 0x3; + const GLint rowBr1 = rowB[k] & 0x3; + const GLint rowCr0 = rowC[j] & 0x3; + const GLint rowCr1 = rowC[k] & 0x3; + const GLint rowDr0 = rowD[j] & 0x3; + const GLint rowDr1 = rowD[k] & 0x3; + const GLint rowAg0 = (rowA[j] >> 2) & 0x7; + const GLint rowAg1 = (rowA[k] >> 2) & 0x7; + const GLint rowBg0 = (rowB[j] >> 2) & 0x7; + const GLint rowBg1 = (rowB[k] >> 2) & 0x7; + const GLint rowCg0 = (rowC[j] >> 2) & 0x7; + const GLint rowCg1 = (rowC[k] >> 2) & 0x7; + const GLint rowDg0 = (rowD[j] >> 2) & 0x7; + const GLint rowDg1 = (rowD[k] >> 2) & 0x7; + const GLint rowAb0 = (rowA[j] >> 5) & 0x7; + const GLint rowAb1 = (rowA[k] >> 5) & 0x7; + const GLint rowBb0 = (rowB[j] >> 5) & 0x7; + const GLint rowBb1 = (rowB[k] >> 5) & 0x7; + const GLint rowCb0 = (rowC[j] >> 5) & 0x7; + const GLint rowCb1 = (rowC[k] >> 5) & 0x7; + const GLint rowDb0 = (rowD[j] >> 5) & 0x7; + const GLint rowDb1 = (rowD[k] >> 5) & 0x7; + const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, + rowCr0, rowCr1, rowDr0, rowDr1); + const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, + rowCg0, rowCg1, rowDg0, rowDg1); + const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, + rowCb0, rowCb1, rowDb0, rowDb1); + dst[i] = (b << 5) | (g << 2) | r; + } + } + else { + _mesa_problem(NULL, "bad format in do_row()"); + } +} + + /* * These functions generate a 1/2-size mipmap image from a source image. * Texture borders are handled by copying or averaging the source image's @@ -544,7 +983,6 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, const GLint dstWidthNB = dstWidth - 2 * border; const GLint dstHeightNB = dstHeight - 2 * border; const GLint dstDepthNB = dstDepth - 2 * border; - GLvoid *tmpRowA, *tmpRowB; GLint img, row; GLint bytesPerSrcImage, bytesPerDstImage; GLint bytesPerSrcRow, bytesPerDstRow; @@ -552,15 +990,6 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, (void) srcDepthNB; /* silence warnings */ - /* Need two temporary row buffers */ - tmpRowA = _mesa_malloc(srcWidth * bpt); - if (!tmpRowA) - return; - tmpRowB = _mesa_malloc(srcWidth * bpt); - if (!tmpRowB) { - _mesa_free(tmpRowA); - return; - } bytesPerSrcImage = srcWidth * srcHeight * bpt; bytesPerDstImage = dstWidth * dstHeight * bpt; @@ -607,15 +1036,11 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, GLubyte *dstImgRow = imgDst; for (row = 0; row < dstHeightNB; row++) { - /* Average together two rows from first src image */ - do_row(datatype, comps, srcWidthNB, srcImgARowA, srcImgARowB, - srcWidthNB, tmpRowA); - /* Average together two rows from second src image */ - do_row(datatype, comps, srcWidthNB, srcImgBRowA, srcImgBRowB, - srcWidthNB, tmpRowB); - /* Average together the temp rows to make the final row */ - do_row(datatype, comps, srcWidthNB, tmpRowA, tmpRowB, - dstWidthNB, dstImgRow); + do_row_3D(datatype, comps, srcWidthNB, + srcImgARowA, srcImgARowB, + srcImgBRowA, srcImgBRowB, + dstWidthNB, dstImgRow); + /* advance to next rows */ srcImgARowA += bytesPerSrcRow + srcRowOffset; srcImgARowB += bytesPerSrcRow + srcRowOffset; @@ -625,8 +1050,6 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, } } - _mesa_free(tmpRowA); - _mesa_free(tmpRowB); /* Luckily we can leverage the make_2d_mipmap() function here! */ if (border > 0) { -- cgit v1.2.3