diff options
Diffstat (limited to 'src/mesa/main/mipmap.c')
| -rw-r--r-- | src/mesa/main/mipmap.c | 1069 |
1 files changed, 521 insertions, 548 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c index 8ca912b3a9..1032e9bb72 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= 4); + /* This assertion is no longer valid with non-power-of-2 textures assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth); */ - switch (format-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; |