{
GLint b = _mesa_sizeof_packed_type(datatype);
assert(b >= 0);
- return b * comps;
+
+ if (_mesa_type_is_packed(datatype))
+ return b;
+ else
+ return b * 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_SUM_3D_SIGNED(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \
+ (Aj + Ak \
+ + Bj + Bk \
+ + Cj + Ck \
+ + Dj + Dk \
+ + 4) / 8
+
+#define FILTER_3D_SIGNED(e) \
+ do { \
+ dst[i][e] = FILTER_SUM_3D_SIGNED(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
}
}
+ else if (datatype == GL_BYTE && comps == 4) {
+ GLuint i, j, k;
+ const GLbyte(*rowA)[4] = (const GLbyte(*)[4]) srcRowA;
+ const GLbyte(*rowB)[4] = (const GLbyte(*)[4]) srcRowB;
+ GLbyte(*dst)[4] = (GLbyte(*)[4]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) 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 == GL_BYTE && comps == 3) {
+ GLuint i, j, k;
+ const GLbyte(*rowA)[3] = (const GLbyte(*)[3]) srcRowA;
+ const GLbyte(*rowB)[3] = (const GLbyte(*)[3]) srcRowB;
+ GLbyte(*dst)[3] = (GLbyte(*)[3]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) 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 == GL_BYTE && comps == 2) {
+ GLuint i, j, k;
+ const GLbyte(*rowA)[2] = (const GLbyte(*)[2]) srcRowA;
+ const GLbyte(*rowB)[2] = (const GLbyte(*)[2]) srcRowB;
+ GLbyte(*dst)[2] = (GLbyte(*)[2]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) 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 == GL_BYTE && comps == 1) {
+ GLuint i, j, k;
+ const GLbyte *rowA = (const GLbyte *) srcRowA;
+ const GLbyte *rowB = (const GLbyte *) srcRowB;
+ GLbyte *dst = (GLbyte *) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4;
+ }
+ }
+
else if (datatype == GL_UNSIGNED_SHORT && comps == 4) {
GLuint i, j, k;
const GLushort(*rowA)[4] = (const GLushort(*)[4]) srcRowA;
dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4;
}
}
-
else if (datatype == GL_FLOAT && comps == 4) {
GLuint i, j, k;
const GLfloat(*rowA)[4] = (const GLfloat(*)[4]) srcRowA;
const GLint rowAr0 = rowA[j] & 0x1f;
const GLint rowAr1 = rowA[k] & 0x1f;
const GLint rowBr0 = rowB[j] & 0x1f;
- const GLint rowBr1 = rowB[k] & 0xf;
+ const GLint rowBr1 = rowB[k] & 0x1f;
const GLint rowAg0 = (rowA[j] >> 5) & 0x1f;
const GLint rowAg1 = (rowA[k] >> 5) & 0x1f;
const GLint rowBg0 = (rowB[j] >> 5) & 0x1f;
}
+/**
+ * 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);
+ }
+ }
+ if ((datatype == GL_BYTE) && (comps == 4)) {
+ DECLARE_ROW_POINTERS(GLbyte, 4);
+
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ FILTER_3D_SIGNED(0);
+ FILTER_3D_SIGNED(1);
+ FILTER_3D_SIGNED(2);
+ FILTER_3D_SIGNED(3);
+ }
+ }
+ else if ((datatype == GL_BYTE) && (comps == 3)) {
+ DECLARE_ROW_POINTERS(GLbyte, 3);
+
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ FILTER_3D_SIGNED(0);
+ FILTER_3D_SIGNED(1);
+ FILTER_3D_SIGNED(2);
+ }
+ }
+ else if ((datatype == GL_BYTE) && (comps == 2)) {
+ DECLARE_ROW_POINTERS(GLbyte, 2);
+
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ FILTER_3D_SIGNED(0);
+ FILTER_3D_SIGNED(1);
+ }
+ }
+ else if ((datatype == GL_BYTE) && (comps == 1)) {
+ DECLARE_ROW_POINTERS(GLbyte, 1);
+
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ FILTER_3D_SIGNED(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
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;
(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;
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;
}
}
- _mesa_free(tmpRowA);
- _mesa_free(tmpRowB);
/* Luckily we can leverage the make_2d_mipmap() function here! */
if (border > 0) {
/**
- * \bugs
+ * \bug
* There is quite a bit of refactoring that could be done with this function
* and \c make_2d_mipmap.
*/
/**
* Down-sample a texture image to produce the next lower mipmap level.
+ * \param comps components per texel (1, 2, 3 or 4)
+ * \param srcRowStride stride between source rows, in texels
+ * \param dstRowStride stride between destination rows, in texels
*/
void
_mesa_generate_mipmap_level(GLenum target,
/**
- * For GL_SGIX_generate_mipmap:
- * Generate a complete set of mipmaps from texObj's base-level image.
+ * Automatic mipmap generation.
+ * This is the fallback/default function for ctx->Driver.GenerateMipmap().
+ * Generate a complete set of mipmaps from texObj's BaseLevel image.
* Stop at texObj's MaxLevel or when we get to the 1x1 texture.
+ * For cube maps, target will be one of
+ * GL_TEXTURE_CUBE_MAP_POSITIVE/NEGATIVE_X/Y/Z; never GL_TEXTURE_CUBE_MAP.
*/
void
_mesa_generate_mipmap(GLcontext *ctx, GLenum target,
/* Find convertFormat - the format that do_row() will process */
if (srcImage->IsCompressed) {
- /* setup for compressed textures */
+ /* setup for compressed textures - need to allocate temporary
+ * image buffers to hold uncompressed images.
+ */
GLuint row;
GLint components, size;
GLchan *dst;
&dstWidth, &dstHeight, &dstDepth);
if (!nextLevel) {
/* all done */
- if (srcImage->IsCompressed) {
- _mesa_free((void *) srcData);
- _mesa_free(dstData);
- }
- return;
+ break;
}
/* get dest gl_texture_image */
return;
}
- if (dstImage->ImageOffsets)
- _mesa_free(dstImage->ImageOffsets);
-
/* Free old image data */
if (dstImage->Data)
ctx->Driver.FreeTexImageData(ctx, dstImage);
}
} /* loop over mipmap levels */
+
+ if (srcImage->IsCompressed) {
+ /* free uncompressed image buffers */
+ _mesa_free((void *) srcData);
+ _mesa_free(dstData);
+ }
}
projects / mesa.git / blobdiff