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-rw-r--r--src/mesa/main/mipmap.c1069
1 files changed, 521 insertions, 548 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c
index 8ca912b3a9d..1032e9bb72c 100644
--- a/src/mesa/main/mipmap.c
+++ b/src/mesa/main/mipmap.c
@@ -36,462 +36,377 @@
+static GLint
+bytes_per_pixel(GLenum datatype, GLuint comps)
+{
+ GLint b = _mesa_sizeof_packed_type(datatype);
+ assert(b >= 0);
+ return b * comps;
+}
+
+
/**
* 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(const struct gl_texture_format *format, GLint srcWidth,
+do_row(GLenum datatype, GLuint comps, GLint srcWidth,
const GLvoid *srcRowA, const GLvoid *srcRowB,
GLint dstWidth, GLvoid *dstRow)
{
const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1;
const GLuint 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/* This assertion is no longer valid with non-power-of-2 textures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);
*/
- switch (format->MesaFormat) {
- case MESA_FORMAT_RGBA:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[4] = (const GLchan (*)[4]) srcRowA;
- const GLchan (*rowB)[4] = (const GLchan (*)[4]) srcRowB;
- GLchan (*dst)[4] = (GLchan (*)[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;
- }
+ if (datatype == GL_UNSIGNED_BYTE && comps == 4) {
+ GLuint i, j, k;
+ const GLubyte(*rowA)[4] = (const GLubyte(*)[4]) srcRowA;
+ const GLubyte(*rowB)[4] = (const GLubyte(*)[4]) srcRowB;
+ GLubyte(*dst)[4] = (GLubyte(*)[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;
}
- return;
- case MESA_FORMAT_RGB:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[3] = (const GLchan (*)[3]) srcRowA;
- const GLchan (*rowB)[3] = (const GLchan (*)[3]) srcRowB;
- GLchan (*dst)[3] = (GLchan (*)[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;
- }
- }
- return;
- case MESA_FORMAT_ALPHA:
- case MESA_FORMAT_LUMINANCE:
- case MESA_FORMAT_INTENSITY:
- {
- GLuint i, j, k;
- const GLchan *rowA = (const GLchan *) srcRowA;
- const GLchan *rowB = (const GLchan *) srcRowB;
- GLchan *dst = (GLchan *) 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_BYTE && comps == 3) {
+ GLuint i, j, k;
+ const GLubyte(*rowA)[3] = (const GLubyte(*)[3]) srcRowA;
+ const GLubyte(*rowB)[3] = (const GLubyte(*)[3]) srcRowB;
+ GLubyte(*dst)[3] = (GLubyte(*)[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;
}
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[2] = (const GLchan (*)[2]) srcRowA;
- const GLchan (*rowB)[2] = (const GLchan (*)[2]) srcRowB;
- GLchan (*dst)[2] = (GLchan (*)[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_UNSIGNED_BYTE && comps == 2) {
+ GLuint i, j, k;
+ const GLubyte(*rowA)[2] = (const GLubyte(*)[2]) srcRowA;
+ const GLubyte(*rowB)[2] = (const GLubyte(*)[2]) srcRowB;
+ GLubyte(*dst)[2] = (GLubyte(*)[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]) >> 2;
+ dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2;
}
- return;
- case MESA_FORMAT_Z32:
- {
- GLuint i, j, k;
- const GLuint *rowA = (const GLuint *) srcRowA;
- const GLuint *rowB = (const GLuint *) srcRowB;
- GLfloat *dst = (GLfloat *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4;
- }
+ }
+ else if (datatype == GL_UNSIGNED_BYTE && comps == 1) {
+ GLuint i, j, k;
+ const GLubyte *rowA = (const GLubyte *) srcRowA;
+ const GLubyte *rowB = (const GLubyte *) srcRowB;
+ GLubyte *dst = (GLubyte *) 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]) >> 2;
}
- return;
- case MESA_FORMAT_Z16:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) 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;
+ const GLushort(*rowB)[4] = (const GLushort(*)[4]) srcRowB;
+ GLushort(*dst)[4] = (GLushort(*)[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;
}
- return;
- /* Begin hardware formats */
- case MESA_FORMAT_RGBA8888:
- case MESA_FORMAT_RGBA8888_REV:
- case MESA_FORMAT_ARGB8888:
- case MESA_FORMAT_ARGB8888_REV:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SRGBA8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[4] = (const GLubyte (*)[4]) srcRowA;
- const GLubyte (*rowB)[4] = (const GLubyte (*)[4]) srcRowB;
- GLubyte (*dst)[4] = (GLubyte (*)[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_UNSIGNED_SHORT && comps == 3) {
+ GLuint i, j, k;
+ const GLushort(*rowA)[3] = (const GLushort(*)[3]) srcRowA;
+ const GLushort(*rowB)[3] = (const GLushort(*)[3]) srcRowB;
+ GLushort(*dst)[3] = (GLushort(*)[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;
}
- return;
- case MESA_FORMAT_RGB888:
- case MESA_FORMAT_BGR888:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SRGB8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[3] = (const GLubyte (*)[3]) srcRowA;
- const GLubyte (*rowB)[3] = (const GLubyte (*)[3]) srcRowB;
- GLubyte (*dst)[3] = (GLubyte (*)[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_UNSIGNED_SHORT && comps == 2) {
+ GLuint i, j, k;
+ const GLushort(*rowA)[2] = (const GLushort(*)[2]) srcRowA;
+ const GLushort(*rowB)[2] = (const GLushort(*)[2]) srcRowB;
+ GLushort(*dst)[2] = (GLushort(*)[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;
}
- return;
- case MESA_FORMAT_RGB565:
- case MESA_FORMAT_RGB565_REV:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- dst[i] = (blue << 11) | (green << 5) | red;
- }
+ }
+ else if (datatype == GL_UNSIGNED_SHORT && comps == 1) {
+ GLuint i, j, k;
+ const GLushort *rowA = (const GLushort *) srcRowA;
+ const GLushort *rowB = (const GLushort *) srcRowB;
+ GLushort *dst = (GLushort *) 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;
}
- return;
- case MESA_FORMAT_ARGB4444:
- case MESA_FORMAT_ARGB4444_REV:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- 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 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
- dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red;
- }
+ }
+
+ else if (datatype == GL_FLOAT && comps == 4) {
+ GLuint i, j, k;
+ const GLfloat(*rowA)[4] = (const GLfloat(*)[4]) srcRowA;
+ const GLfloat(*rowB)[4] = (const GLfloat(*)[4]) srcRowB;
+ GLfloat(*dst)[4] = (GLfloat(*)[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]) * 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;
}
- return;
- case MESA_FORMAT_ARGB1555:
- case MESA_FORMAT_ARGB1555_REV: /* XXX broken? */
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- 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] & 0xf;
- 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
- dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red;
- }
+ }
+ else if (datatype == GL_FLOAT && comps == 3) {
+ GLuint i, j, k;
+ const GLfloat(*rowA)[3] = (const GLfloat(*)[3]) srcRowA;
+ const GLfloat(*rowB)[3] = (const GLfloat(*)[3]) srcRowB;
+ GLfloat(*dst)[3] = (GLfloat(*)[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]) * 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;
}
- return;
- case MESA_FORMAT_AL88:
- case MESA_FORMAT_AL88_REV:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SLA8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[2] = (const GLubyte (*)[2]) srcRowA;
- const GLubyte (*rowB)[2] = (const GLubyte (*)[2]) srcRowB;
- GLubyte (*dst)[2] = (GLubyte (*)[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]) >> 2;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) >> 2;
- }
+ }
+ else if (datatype == GL_FLOAT && comps == 2) {
+ GLuint i, j, k;
+ const GLfloat(*rowA)[2] = (const GLfloat(*)[2]) srcRowA;
+ const GLfloat(*rowB)[2] = (const GLfloat(*)[2]) srcRowB;
+ GLfloat(*dst)[2] = (GLfloat(*)[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]) * 0.25F;
+ dst[i][1] = (rowA[j][1] + rowA[k][1] +
+ rowB[j][1] + rowB[k][1]) * 0.25F;
}
- return;
- case MESA_FORMAT_RGB332:
- {
- GLuint i, j, k;
- const GLubyte *rowA = (const GLubyte *) srcRowA;
- const GLubyte *rowB = (const GLubyte *) srcRowB;
- GLubyte *dst = (GLubyte *) dstRow;
- 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- dst[i] = (blue << 5) | (green << 2) | red;
- }
+ }
+ else if (datatype == GL_FLOAT && comps == 1) {
+ GLuint i, j, k;
+ const GLfloat *rowA = (const GLfloat *) srcRowA;
+ const GLfloat *rowB = (const GLfloat *) srcRowB;
+ GLfloat *dst = (GLfloat *) 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]) * 0.25F;
}
- return;
- case MESA_FORMAT_A8:
- case MESA_FORMAT_L8:
- case MESA_FORMAT_I8:
- case MESA_FORMAT_CI8:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SL8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte *rowA = (const GLubyte *) srcRowA;
- const GLubyte *rowB = (const GLubyte *) srcRowB;
- GLubyte *dst = (GLubyte *) 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]) >> 2;
+ }
+
+ else if (datatype == GL_HALF_FLOAT_ARB && comps == 4) {
+ GLuint i, j, k, comp;
+ const GLhalfARB(*rowA)[4] = (const GLhalfARB(*)[4]) srcRowA;
+ const GLhalfARB(*rowB)[4] = (const GLhalfARB(*)[4]) srcRowB;
+ GLhalfARB(*dst)[4] = (GLhalfARB(*)[4]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ for (comp = 0; comp < 4; comp++) {
+ GLfloat aj, ak, bj, bk;
+ aj = _mesa_half_to_float(rowA[j][comp]);
+ ak = _mesa_half_to_float(rowA[k][comp]);
+ bj = _mesa_half_to_float(rowB[j][comp]);
+ bk = _mesa_half_to_float(rowB[k][comp]);
+ dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
- return;
- case MESA_FORMAT_RGBA_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[4] = (const GLfloat (*)[4]) srcRowA;
- const GLfloat (*rowB)[4] = (const GLfloat (*)[4]) srcRowB;
- GLfloat (*dst)[4] = (GLfloat (*)[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]) * 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 == GL_HALF_FLOAT_ARB && comps == 3) {
+ GLuint i, j, k, comp;
+ const GLhalfARB(*rowA)[3] = (const GLhalfARB(*)[3]) srcRowA;
+ const GLhalfARB(*rowB)[3] = (const GLhalfARB(*)[3]) srcRowB;
+ GLhalfARB(*dst)[3] = (GLhalfARB(*)[3]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ for (comp = 0; comp < 3; comp++) {
+ GLfloat aj, ak, bj, bk;
+ aj = _mesa_half_to_float(rowA[j][comp]);
+ ak = _mesa_half_to_float(rowA[k][comp]);
+ bj = _mesa_half_to_float(rowB[j][comp]);
+ bk = _mesa_half_to_float(rowB[k][comp]);
+ dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
- return;
- case MESA_FORMAT_RGBA_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[4] = (const GLhalfARB (*)[4]) srcRowA;
- const GLhalfARB (*rowB)[4] = (const GLhalfARB (*)[4]) srcRowB;
- GLhalfARB (*dst)[4] = (GLhalfARB (*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 4; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
+ }
+ else if (datatype == GL_HALF_FLOAT_ARB && comps == 2) {
+ GLuint i, j, k, comp;
+ const GLhalfARB(*rowA)[2] = (const GLhalfARB(*)[2]) srcRowA;
+ const GLhalfARB(*rowB)[2] = (const GLhalfARB(*)[2]) srcRowB;
+ GLhalfARB(*dst)[2] = (GLhalfARB(*)[2]) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ for (comp = 0; comp < 2; comp++) {
+ GLfloat aj, ak, bj, bk;
+ aj = _mesa_half_to_float(rowA[j][comp]);
+ ak = _mesa_half_to_float(rowA[k][comp]);
+ bj = _mesa_half_to_float(rowB[j][comp]);
+ bk = _mesa_half_to_float(rowB[k][comp]);
+ dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
- return;
- case MESA_FORMAT_RGB_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[3] = (const GLfloat (*)[3]) srcRowA;
- const GLfloat (*rowB)[3] = (const GLfloat (*)[3]) srcRowB;
- GLfloat (*dst)[3] = (GLfloat (*)[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]) * 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 == GL_HALF_FLOAT_ARB && comps == 1) {
+ GLuint i, j, k;
+ const GLhalfARB *rowA = (const GLhalfARB *) srcRowA;
+ const GLhalfARB *rowB = (const GLhalfARB *) srcRowB;
+ GLhalfARB *dst = (GLhalfARB *) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ GLfloat aj, ak, bj, bk;
+ aj = _mesa_half_to_float(rowA[j]);
+ ak = _mesa_half_to_float(rowA[k]);
+ bj = _mesa_half_to_float(rowB[j]);
+ bk = _mesa_half_to_float(rowB[k]);
+ dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
}
- return;
- case MESA_FORMAT_RGB_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[3] = (const GLhalfARB (*)[3]) srcRowA;
- const GLhalfARB (*rowB)[3] = (const GLhalfARB (*)[3]) srcRowB;
- GLhalfARB (*dst)[3] = (GLhalfARB (*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 3; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
+ }
+
+ else if (datatype == GL_UNSIGNED_INT && comps == 1) {
+ GLuint i, j, k;
+ const GLuint *rowA = (const GLuint *) srcRowA;
+ const GLuint *rowB = (const GLuint *) srcRowB;
+ GLfloat *dst = (GLfloat *) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ dst[i] = (GLfloat)(rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4);
}
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[2] = (const GLfloat (*)[2]) srcRowA;
- const GLfloat (*rowB)[2] = (const GLfloat (*)[2]) srcRowB;
- GLfloat (*dst)[2] = (GLfloat (*)[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]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- }
+ }
+
+ else if (datatype == GL_UNSIGNED_SHORT_5_6_5 && comps == 3) {
+ GLuint i, j, k;
+ const GLushort *rowA = (const GLushort *) srcRowA;
+ const GLushort *rowB = (const GLushort *) srcRowB;
+ GLushort *dst = (GLushort *) dstRow;
+ 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
+ const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
+ const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
+ dst[i] = (blue << 11) | (green << 5) | red;
}
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[2] = (const GLhalfARB (*)[2]) srcRowA;
- const GLhalfARB (*rowB)[2] = (const GLhalfARB (*)[2]) srcRowB;
- GLhalfARB (*dst)[2] = (GLhalfARB (*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 2; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
+ }
+ else if (datatype == GL_UNSIGNED_SHORT_4_4_4_4 && comps == 4) {
+ GLuint i, j, k;
+ const GLushort *rowA = (const GLushort *) srcRowA;
+ const GLushort *rowB = (const GLushort *) srcRowB;
+ GLushort *dst = (GLushort *) dstRow;
+ 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 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
+ const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
+ const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
+ const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
+ dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red;
}
- return;
- case MESA_FORMAT_ALPHA_FLOAT32:
- case MESA_FORMAT_LUMINANCE_FLOAT32:
- case MESA_FORMAT_INTENSITY_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat *rowA = (const GLfloat *) srcRowA;
- const GLfloat *rowB = (const GLfloat *) srcRowB;
- GLfloat *dst = (GLfloat *) 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]) * 0.25F;
- }
+ }
+ else if (datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV && comps == 4) {
+ GLuint i, j, k;
+ const GLushort *rowA = (const GLushort *) srcRowA;
+ const GLushort *rowB = (const GLushort *) srcRowB;
+ GLushort *dst = (GLushort *) dstRow;
+ 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] & 0xf;
+ 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
+ const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
+ const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
+ const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
+ dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red;
}
- return;
- case MESA_FORMAT_ALPHA_FLOAT16:
- case MESA_FORMAT_LUMINANCE_FLOAT16:
- case MESA_FORMAT_INTENSITY_FLOAT16:
- {
- GLuint i, j, k;
- const GLhalfARB *rowA = (const GLhalfARB *) srcRowA;
- const GLhalfARB *rowB = (const GLhalfARB *) srcRowB;
- GLhalfARB *dst = (GLhalfARB *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j]);
- ak = _mesa_half_to_float(rowA[k]);
- bj = _mesa_half_to_float(rowB[j]);
- bk = _mesa_half_to_float(rowB[k]);
- dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
+ }
+ else if (datatype == GL_UNSIGNED_BYTE_3_3_2 && comps == 3) {
+ GLuint i, j, k;
+ const GLubyte *rowA = (const GLubyte *) srcRowA;
+ const GLubyte *rowB = (const GLubyte *) srcRowB;
+ GLubyte *dst = (GLubyte *) dstRow;
+ 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 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 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 red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
+ const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
+ const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
+ dst[i] = (blue << 5) | (green << 2) | red;
}
- return;
-
- default:
+ }
+ else {
_mesa_problem(NULL, "bad format in do_row()");
}
}
@@ -504,11 +419,11 @@ do_row(const struct gl_texture_format *format, GLint srcWidth,
*/
static void
-make_1d_mipmap(const struct gl_texture_format *format, GLint border,
+make_1d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, const GLubyte *srcPtr,
GLint dstWidth, GLubyte *dstPtr)
{
- const GLint bpt = format->TexelBytes;
+ const GLint bpt = bytes_per_pixel(datatype, comps);
const GLubyte *src;
GLubyte *dst;
@@ -517,7 +432,7 @@ make_1d_mipmap(const struct gl_texture_format *format, GLint border,
dst = dstPtr + border * bpt;
/* we just duplicate the input row, kind of hack, saves code */
- do_row(format, srcWidth - 2 * border, src, src,
+ do_row(datatype, comps, srcWidth - 2 * border, src, src,
dstWidth - 2 * border, dst);
if (border) {
@@ -531,23 +446,30 @@ make_1d_mipmap(const struct gl_texture_format *format, GLint border,
}
+/**
+ * Strides are in bytes. If zero, it'll be computed as width * bpp.
+ */
static void
-make_2d_mipmap(const struct gl_texture_format *format, GLint border,
+make_2d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight,
- const GLubyte *srcPtr, GLint srcRowStride,
+ GLint srcRowStride, const GLubyte *srcPtr,
GLint dstWidth, GLint dstHeight,
- GLubyte *dstPtr, GLint dstRowStride)
+ GLint dstRowStride, GLubyte *dstPtr)
{
- const GLint bpt = format->TexelBytes;
+ const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint dstWidthNB = dstWidth - 2 * border;
const GLint dstHeightNB = dstHeight - 2 * border;
- const GLint srcRowBytes = bpt * srcRowStride;
- const GLint dstRowBytes = bpt * dstRowStride;
const GLubyte *srcA, *srcB;
GLubyte *dst;
GLint row;
+ if (!srcRowStride)
+ srcRowStride = bpt * srcWidth;
+
+ if (!dstRowStride)
+ dstRowStride = bpt * dstWidth;
+
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
if (srcHeight > 1)
@@ -557,7 +479,7 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
dst = dstPtr + border * ((dstWidth + 1) * bpt);
for (row = 0; row < dstHeightNB; row++) {
- do_row(format, srcWidthNB, srcA, srcB,
+ do_row(datatype, comps, srcWidthNB, srcA, srcB,
dstWidthNB, dst);
srcA += 2 * srcRowBytes;
srcB += 2 * srcRowBytes;
@@ -579,12 +501,12 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
MEMCPY(dstPtr + (dstWidth * dstHeight - 1) * bpt,
srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt);
/* lower border */
- do_row(format, srcWidthNB,
+ do_row(datatype, comps, srcWidthNB,
srcPtr + bpt,
srcPtr + bpt,
dstWidthNB, dstPtr + bpt);
/* upper border */
- do_row(format, srcWidthNB,
+ do_row(datatype, comps, srcWidthNB,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
dstWidthNB,
@@ -602,11 +524,11 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
else {
/* average two src pixels each dest pixel */
for (row = 0; row < dstHeightNB; row += 2) {
- do_row(format, 1,
+ do_row(datatype, comps, 1,
srcPtr + (srcWidth * (row * 2 + 1)) * bpt,
srcPtr + (srcWidth * (row * 2 + 2)) * bpt,
1, dstPtr + (dstWidth * row + 1) * bpt);
- do_row(format, 1,
+ do_row(datatype, comps, 1,
srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt,
srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt,
1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt);
@@ -617,13 +539,15 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
static void
-make_3d_mipmap(const struct gl_texture_format *format, GLint border,
+make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
- const GLubyte *srcPtr, GLint srcRowStride,
+ GLint srcRowStride,
+ const GLubyte *srcPtr,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLubyte *dstPtr, GLint dstRowStride)
+ GLint dstRowStride,
+ GLubyte *dstPtr)
{
- const GLint bpt = format->TexelBytes;
+ const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint srcDepthNB = srcDepth - 2 * border;
const GLint dstWidthNB = dstWidth - 2 * border;
@@ -632,7 +556,6 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
GLvoid *tmpRowA, *tmpRowB;
GLint img, row;
GLint bytesPerSrcImage, bytesPerDstImage;
- GLint bytesPerSrcRow, bytesPerDstRow;
GLint srcImageOffset, srcRowOffset;
(void) srcDepthNB; /* silence warnings */
@@ -650,8 +573,10 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
bytesPerSrcImage = srcWidth * srcHeight * bpt;
bytesPerDstImage = dstWidth * dstHeight * bpt;
- bytesPerSrcRow = srcWidth * bpt;
- bytesPerDstRow = dstWidth * bpt;
+ if (!srcRowStride)
+ srcRowStride = srcWidth * bpt;
+ if (!dstRowStride)
+ dstRowStride = dstWidth * bpt;
/* Offset between adjacent src images to be averaged together */
srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
@@ -675,13 +600,13 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
for (img = 0; img < dstDepthNB; img++) {
/* first source image pointer, skipping border */
const GLubyte *imgSrcA = srcPtr
- + (bytesPerSrcImage + bytesPerSrcRow + border) * bpt * border
+ + (bytesPerSrcImage + srcRowStride + border) * bpt * border
+ img * (bytesPerSrcImage + srcImageOffset);
/* second source image pointer, skipping border */
const GLubyte *imgSrcB = imgSrcA + srcImageOffset;
/* address of the dest image, skipping border */
GLubyte *imgDst = dstPtr
- + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border
+ + (bytesPerDstImage + dstRowStride + border) * bpt * border
+ img * bytesPerDstImage;
/* setup the four source row pointers and the dest row pointer */
@@ -693,20 +618,20 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
for (row = 0; row < dstHeightNB; row++) {
/* Average together two rows from first src image */
- do_row(format, srcWidthNB, srcImgARowA, srcImgARowB,
+ do_row(datatype, comps, srcWidthNB, srcImgARowA, srcImgARowB,
srcWidthNB, tmpRowA);
/* Average together two rows from second src image */
- do_row(format, srcWidthNB, srcImgBRowA, srcImgBRowB,
+ do_row(datatype, comps, srcWidthNB, srcImgBRowA, srcImgBRowB,
srcWidthNB, tmpRowB);
/* Average together the temp rows to make the final row */
- do_row(format, srcWidthNB, tmpRowA, tmpRowB,
+ do_row(datatype, comps, srcWidthNB, tmpRowA, tmpRowB,
dstWidthNB, dstImgRow);
/* advance to next rows */
- srcImgARowA += bytesPerSrcRow + srcRowOffset;
- srcImgARowB += bytesPerSrcRow + srcRowOffset;
- srcImgBRowA += bytesPerSrcRow + srcRowOffset;
- srcImgBRowB += bytesPerSrcRow + srcRowOffset;
- dstImgRow += bytesPerDstRow;
+ srcImgARowA += srcRowStride + srcRowOffset;
+ srcImgARowB += srcRowStride + srcRowOffset;
+ srcImgBRowA += srcRowStride + srcRowOffset;
+ srcImgBRowB += srcRowStride + srcRowOffset;
+ dstImgRow += dstRowStride;
}
}
@@ -716,13 +641,15 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
/* Luckily we can leverage the make_2d_mipmap() function here! */
if (border > 0) {
/* do front border image */
- make_2d_mipmap(format, 1, srcWidth, srcHeight, srcPtr, srcRowStride,
- dstWidth, dstHeight, dstPtr, dstRowStride);
+ make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, 0, srcPtr,
+ dstWidth, dstHeight, 0, dstPtr);
/* do back border image */
- make_2d_mipmap(format, 1, srcWidth, srcHeight,
- srcPtr + bytesPerSrcImage * (srcDepth - 1), srcRowStride,
+ make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight,
+ 0,
+ srcPtr + bytesPerSrcImage * (srcDepth - 1),
dstWidth, dstHeight,
- dstPtr + bytesPerDstImage * (dstDepth - 1), dstRowStride);
+ 0,
+ dstPtr + bytesPerDstImage * (dstDepth - 1));
/* do four remaining border edges that span the image slices */
if (srcDepth == dstDepth) {
/* just copy border pixels from src to dst */
@@ -737,9 +664,9 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
/* do border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
- + (srcHeight - 1) * bytesPerSrcRow;
+ + (srcHeight - 1) * srcRowStride;
dst = dstPtr + (img + 1) * bytesPerDstImage
- + (dstHeight - 1) * bytesPerDstRow;
+ + (dstHeight - 1) * dstRowStride;
MEMCPY(dst, src, bpt);
/* do border along [img][row=0][col=dstWidth-1] */
@@ -767,28 +694,28 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
/* do border along [img][row=0][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage;
dst = dstPtr + (img + 1) * bytesPerDstImage;
- do_row(format, 1, src, src + srcImageOffset, 1, dst);
+ do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
/* do border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
- + (srcHeight - 1) * bytesPerSrcRow;
+ + (srcHeight - 1) * srcRowStride;
dst = dstPtr + (img + 1) * bytesPerDstImage
- + (dstHeight - 1) * bytesPerDstRow;
- do_row(format, 1, src, src + srcImageOffset, 1, dst);
+ + (dstHeight - 1) * dstRowStride;
+ do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
/* do border along [img][row=0][col=dstWidth-1] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
+ (srcWidth - 1) * bpt;
dst = dstPtr + (img + 1) * bytesPerDstImage
+ (dstWidth - 1) * bpt;
- do_row(format, 1, src, src + srcImageOffset, 1, dst);
+ do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
/* do border along [img][row=dstHeight-1][col=dstWidth-1] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
+ (bytesPerSrcImage - bpt);
dst = dstPtr + (img + 1) * bytesPerDstImage
+ (bytesPerDstImage - bpt);
- do_row(format, 1, src, src + srcImageOffset, 1, dst);
+ do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
}
}
}
@@ -796,12 +723,11 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
static void
-make_1d_stack_mipmap(const struct gl_texture_format *format, GLint border,
- GLint srcWidth, const GLubyte *srcPtr, GLuint srcRowStride,
- GLint dstWidth, GLint dstHeight,
- GLubyte *dstPtr, GLuint dstRowStride )
+make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
+ GLint srcWidth, const GLubyte *srcPtr,
+ GLint dstWidth, GLint dstHeight, GLubyte *dstPtr)
{
- const GLint bpt = format->TexelBytes;
+ const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint dstWidthNB = dstWidth - 2 * border;
const GLint dstHeightNB = dstHeight - 2 * border;
@@ -816,7 +742,7 @@ make_1d_stack_mipmap(const struct gl_texture_format *format, GLint border,
dst = dstPtr + border * ((dstWidth + 1) * bpt);
for (row = 0; row < dstHeightNB; row++) {
- do_row(format, srcWidthNB, src, src,
+ do_row(datatype, comps, srcWidthNB, src, src,
dstWidthNB, dst);
src += srcRowBytes;
dst += dstRowBytes;
@@ -839,24 +765,30 @@ make_1d_stack_mipmap(const struct gl_texture_format *format, GLint border,
* and \c make_2d_mipmap.
*/
static void
-make_2d_stack_mipmap(const struct gl_texture_format *format, GLint border,
+make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight,
- const GLubyte *srcPtr, GLint srcRowStride,
+ GLint srcRowStride,
+ const GLubyte *srcPtr,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLubyte *dstPtr, GLint dstRowStride)
+ GLint dstRowStride,
+ GLubyte *dstPtr)
{
- const GLint bpt = format->TexelBytes;
+ const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint dstWidthNB = dstWidth - 2 * border;
const GLint dstHeightNB = dstHeight - 2 * border;
const GLint dstDepthNB = dstDepth - 2 * border;
- const GLint srcRowBytes = bpt * srcRowStride;
- const GLint dstRowBytes = bpt * dstRowStride;
const GLubyte *srcA, *srcB;
GLubyte *dst;
GLint layer;
GLint row;
+ if (!srcRowStride)
+ srcRowStride = bpt * srcWidth;
+
+ if (!dstRowStride)
+ dstRowStride = bpt * dstWidth;
+
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
if (srcHeight > 1)
@@ -867,7 +799,7 @@ make_2d_stack_mipmap(const struct gl_texture_format *format, GLint border,
for (layer = 0; layer < dstDepthNB; layer++) {
for (row = 0; row < dstHeightNB; row++) {
- do_row(format, srcWidthNB, srcA, srcB,
+ do_row(datatype, comps, srcWidthNB, srcA, srcB,
dstWidthNB, dst);
srcA += 2 * srcRowBytes;
srcB += 2 * srcRowBytes;
@@ -889,12 +821,12 @@ make_2d_stack_mipmap(const struct gl_texture_format *format, GLint border,
MEMCPY(dstPtr + (dstWidth * dstHeight - 1) * bpt,
srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt);
/* lower border */
- do_row(format, srcWidthNB,
+ do_row(datatype, comps, srcWidthNB,
srcPtr + bpt,
srcPtr + bpt,
dstWidthNB, dstPtr + bpt);
/* upper border */
- do_row(format, srcWidthNB,
+ do_row(datatype, comps, srcWidthNB,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
dstWidthNB,
@@ -912,11 +844,11 @@ make_2d_stack_mipmap(const struct gl_texture_format *format, GLint border,
else {
/* average two src pixels each dest pixel */
for (row = 0; row < dstHeightNB; row += 2) {
- do_row(format, 1,
+ do_row(datatype, comps, 1,
srcPtr + (srcWidth * (row * 2 + 1)) * bpt,
srcPtr + (srcWidth * (row * 2 + 2)) * bpt,
1, dstPtr + (dstWidth * row + 1) * bpt);
- do_row(format, 1,
+ do_row(datatype, comps, 1,
srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt,
srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt,
1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt);
@@ -928,6 +860,106 @@ make_2d_stack_mipmap(const struct gl_texture_format *format, GLint border,
/**
+ * Down-sample a texture image to produce the next lower mipmap level.
+ */
+void
+_mesa_generate_mipmap_level(GLenum target,
+ GLenum datatype, GLuint comps,
+ GLint border,
+ GLint srcWidth, GLint srcHeight, GLint srcDepth,
+ GLint srcRowStride,
+ const GLubyte *srcData,
+ GLint dstWidth, GLint dstHeight, GLint dstDepth,
+ GLint dstRowStride,
+ GLubyte *dstData)
+{
+ switch (target) {
+ case GL_TEXTURE_1D:
+ make_1d_mipmap(datatype, comps, border,
+ srcWidth, srcData,
+ dstWidth, dstData);
+ break;
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+ make_2d_mipmap(datatype, comps, border,
+ srcWidth, srcHeight, srcRowStride, srcData,
+ dstWidth, dstHeight, dstRowStride, dstData);
+ break;
+ case GL_TEXTURE_3D:
+ make_3d_mipmap(datatype, comps, border,
+ srcWidth, srcHeight, srcDepth, srcRowStride, srcData,
+ dstWidth, dstHeight, dstDepth, dstRowStride, dstData);
+ break;
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ make_1d_stack_mipmap(datatype, comps, border,
+ srcWidth, srcData,
+ dstWidth, dstHeight, dstData);
+ break;
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ make_2d_stack_mipmap(datatype, comps, border,
+ srcWidth, srcHeight, srcRowStride, srcData,
+ dstWidth, dstHeight, dstDepth, dstRowStride, dstData);
+ break;
+ case GL_TEXTURE_RECTANGLE_NV:
+ /* no mipmaps, do nothing */
+ break;
+ default:
+ _mesa_problem(NULL, "bad target in _mesa_generate_mipmap_level");
+ }
+}
+
+
+/**
+ * compute next (level+1) image size
+ * \return GL_FALSE if no smaller size can be generated (eg. src is 1x1x1 size)
+ */
+static GLboolean
+next_mipmap_level_size(GLenum target, GLint border,
+ GLint srcWidth, GLint srcHeight, GLint srcDepth,
+ GLint *dstWidth, GLint *dstHeight, GLint *dstDepth)
+{
+ if (srcWidth - 2 * border > 1) {
+ *dstWidth = (srcWidth - 2 * border) / 2 + 2 * border;
+ }
+ else {
+ *dstWidth = srcWidth; /* can't go smaller */
+ }
+
+ if ((srcHeight - 2 * border > 1) &&
+ (target != GL_TEXTURE_1D_ARRAY_EXT)) {
+ *dstHeight = (srcHeight - 2 * border) / 2 + 2 * border;
+ }
+ else {
+ *dstHeight = srcHeight; /* can't go smaller */
+ }
+
+ if ((srcDepth - 2 * border > 1) &&
+ (target != GL_TEXTURE_2D_ARRAY_EXT)) {
+ *dstDepth = (srcDepth - 2 * border) / 2 + 2 * border;
+ }
+ else {
+ *dstDepth = srcDepth; /* can't go smaller */
+ }
+
+ if (*dstWidth == srcWidth &&
+ *dstHeight == srcHeight &&
+ *dstDepth == srcDepth) {
+ return GL_FALSE;
+ }
+ else {
+ return GL_TRUE;
+ }
+}
+
+
+
+
+/**
* For GL_SGIX_generate_mipmap:
* Generate a complete set of mipmaps from texObj's base-level image.
* Stop at texObj's MaxLevel or when we get to the 1x1 texture.
@@ -941,6 +973,8 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
const GLubyte *srcData = NULL;
GLubyte *dstData = NULL;
GLint level, maxLevels;
+ GLenum datatype;
+ GLuint comps;
ASSERT(texObj);
/* XXX choose cube map face here??? */
@@ -1004,6 +1038,8 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
convertFormat = srcImage->TexFormat;
}
+ _mesa_format_to_type_and_comps(convertFormat, &datatype, &comps);
+
for (level = texObj->BaseLevel; level < texObj->MaxLevel
&& level < maxLevels - 1; level++) {
/* generate image[level+1] from image[level] */
@@ -1012,6 +1048,7 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
GLint srcWidth, srcHeight, srcDepth;
GLint dstWidth, dstHeight, dstDepth;
GLint border, bytesPerTexel;
+ GLboolean nextLevel;
/* get src image parameters */
srcImage = _mesa_select_tex_image(ctx, texObj, target, level);
@@ -1021,31 +1058,10 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
srcDepth = srcImage->Depth;
border = srcImage->Border;
- /* compute next (level+1) image size */
- if (srcWidth - 2 * border > 1) {
- dstWidth = (srcWidth - 2 * border) / 2 + 2 * border;
- }
- else {
- dstWidth = srcWidth; /* can't go smaller */
- }
- if ((srcHeight - 2 * border > 1) &&
- (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT)) {
- dstHeight = (srcHeight - 2 * border) / 2 + 2 * border;
- }
- else {
- dstHeight = srcHeight; /* can't go smaller */
- }
- if ((srcDepth - 2 * border > 1) &&
- (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT)) {
- dstDepth = (srcDepth - 2 * border) / 2 + 2 * border;
- }
- else {
- dstDepth = srcDepth; /* can't go smaller */
- }
-
- if (dstWidth == srcWidth &&
- dstHeight == srcHeight &&
- dstDepth == srcDepth) {
+ nextLevel = next_mipmap_level_size(target, border,
+ srcWidth, srcHeight, srcDepth,
+ &dstWidth, &dstHeight, &dstDepth);
+ if (!nextLevel) {
/* all done */
if (srcImage->IsCompressed) {
_mesa_free((void *) srcData);
@@ -1115,53 +1131,10 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
dstData = (GLubyte *) dstImage->Data;
}
- /*
- * We use simple 2x2 averaging to compute the next mipmap level.
- */
- switch (target) {
- case GL_TEXTURE_1D:
- make_1d_mipmap(convertFormat, border,
- srcWidth, srcData,
- dstWidth, dstData);
- break;
- case GL_TEXTURE_2D:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- make_2d_mipmap(convertFormat, border,
- srcWidth, srcHeight, srcData, srcImage->RowStride,
- dstWidth, dstHeight, dstData, dstImage->RowStride);
- break;
- case GL_TEXTURE_3D:
- make_3d_mipmap(convertFormat, border,
- srcWidth, srcHeight, srcDepth,
- srcData, srcImage->RowStride,
- dstWidth, dstHeight, dstDepth,
- dstData, dstImage->RowStride);
- break;
- case GL_TEXTURE_1D_ARRAY_EXT:
- make_1d_stack_mipmap(convertFormat, border,
- srcWidth, srcData, srcImage->RowStride,
- dstWidth, dstHeight,
- dstData, dstImage->RowStride);
- break;
- case GL_TEXTURE_2D_ARRAY_EXT:
- make_2d_stack_mipmap(convertFormat, border,
- srcWidth, srcHeight,
- srcData, srcImage->RowStride,
- dstWidth, dstHeight,
- dstDepth, dstData, dstImage->RowStride);
- break;
- case GL_TEXTURE_RECTANGLE_NV:
- /* no mipmaps, do nothing */
- break;
- default:
- _mesa_problem(ctx, "bad dimensions in _mesa_generate_mipmaps");
- return;
- }
+ /* Note, 0 indicates default row strides */
+ _mesa_generate_mipmap_level(target, datatype, comps, border,
+ srcWidth, srcHeight, srcDepth, 0, srcData,
+ dstWidth, dstHeight, dstDepth, 0, dstData);
if (dstImage->IsCompressed) {
GLubyte *temp;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 17:52:06 +0000