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Finished GL_SGIS_generate_mipmap. Should be trivial to enable in DRI drivers.

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This commit is contained in:
Brian Paul
2001-05-24 14:47:56 +00:00
parent 55ed11bac5
commit 9228e17bb5
3 changed files with 351 additions and 166 deletions
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4
src/mesa/main/extensions.c
View File

@@ -1,4 +1,4 @@
/* $Id: extensions.c,v 1.59 2001/05/21 16:41:03 brianp Exp $ */
/* $Id: extensions.c,v 1.60 2001/05/24 14:47:56 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -106,7 +106,7 @@ static struct {
{ ON, "GL_NV_texgen_reflection", F(NV_texgen_reflection) },
{ OFF, "GL_SGI_color_matrix", F(SGI_color_matrix) },
{ OFF, "GL_SGI_color_table", F(SGI_color_table) },
/*{ OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },*/
{ OFF, "GL_SGIS_generate_mipmap", F(SGIS_generate_mipmap) },
{ OFF, "GL_SGIS_pixel_texture", F(SGIS_pixel_texture) },
{ OFF, "GL_SGIS_texture_border_clamp", F(ARB_texture_border_clamp) },
{ OFF, "GL_SGIS_texture_edge_clamp", F(SGIS_texture_edge_clamp) },

4
src/mesa/main/teximage.c
View File

@@ -1,4 +1,4 @@
/* $Id: teximage.c,v 1.94 2001/05/21 16:41:03 brianp Exp $ */
/* $Id: teximage.c,v 1.95 2001/05/24 14:47:56 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -328,7 +328,9 @@ _mesa_set_tex_image(struct gl_texture_object *tObj,
ASSERT(tObj);
ASSERT(texImage);
switch (target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
tObj->Image[level] = texImage;
return;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:

509
src/mesa/main/texstore.c
View File

@@ -1,4 +1,4 @@
/* $Id: texstore.c,v 1.26 2001/05/22 21:49:03 brianp Exp $ */
/* $Id: texstore.c,v 1.27 2001/05/24 14:47:56 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -625,6 +625,7 @@ _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx,
internalFormat, format, type);
assert(texImage->TexFormat);
texImage->FetchTexel = texImage->TexFormat->FetchTexel1D;
texelBytes = texImage->TexFormat->TexelBytes;
@@ -731,6 +732,7 @@ _mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level,
texImage->TexFormat = (*ctx->Driver.ChooseTextureFormat)(ctx,
internalFormat, format, type);
assert(texImage->TexFormat);
texImage->FetchTexel = texImage->TexFormat->FetchTexel3D;
texelBytes = texImage->TexFormat->TexelBytes;
@@ -923,7 +925,7 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
/* We always pass.
* The core Mesa code will have already tested the image size, etc.
* Drivers may have more stringent texture limits to enforce and will
* If a driver has more stringent texture limits to enforce it will
* have to override this function.
*/
/* choose the texture format */
@@ -940,45 +942,53 @@ _mesa_test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
/*
* 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 rows are to be twice as long as the
* dest row.
* to the same data. The source width must be equal to either the
* dest width or two times the dest width.
*/
static void
do_row(const struct gl_texture_format *format, GLint dstWidth,
const GLvoid *srcRowA, const GLvoid *srcRowB, GLvoid *dstRow)
do_row(const struct gl_texture_format *format, 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(srcWidth == dstWidth || srcWidth == 2 * dstWidth);
switch (format->MesaFormat) {
case MESA_FORMAT_RGBA:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
dst[i][2] = (rowA[j][2] + rowA[j+1][2] +
rowB[j][2] + rowB[j+1][2]) >> 2;
dst[i][3] = (rowA[j][3] + rowA[j+1][3] +
rowB[j][3] + rowB[j+1][3]) >> 2;
for (i = j = 0, k = k0; i < 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;
dst[i][2] = (rowA[j][2] + rowA[k][2] +
rowB[j][2] + rowB[k][2]) >> 2;
dst[i][3] = (rowA[j][3] + rowA[k][3] +
rowB[j][3] + rowB[k][3]) >> 2;
}
}
return;
case MESA_FORMAT_RGB:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
dst[i][2] = (rowA[j][2] + rowA[j+1][2] +
rowB[j][2] + rowB[j+1][2]) >> 2;
for (i = j = 0, k = k0; i < 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;
dst[i][2] = (rowA[j][2] + rowA[k][2] +
rowB[j][2] + rowB[k][2]) >> 2;
}
}
return;
@@ -987,37 +997,40 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
case MESA_FORMAT_INTENSITY:
case MESA_FORMAT_COLOR_INDEX:
{
GLuint i, j;
GLuint i, j, k;
const GLchan *rowA = (const GLchan *) srcRowA;
const GLchan *rowB = (const GLchan *) srcRowB;
GLchan *dst = (GLchan *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
dst[i] = (rowA[j] + rowA[j+1] + rowB[j] + rowB[j+1]) >> 2;
for (i = j = 0, k = k0; i < dstWidth;
i++, j += colStride, k += colStride) {
dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2;
}
}
return;
case MESA_FORMAT_LUMINANCE_ALPHA:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
for (i = j = 0, k = k0; i < 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_DEPTH_COMPONENT:
{
GLuint i, j;
GLuint i, j, k;
const GLfloat *rowA = (const GLfloat *) srcRowA;
const GLfloat *rowB = (const GLfloat *) srcRowB;
GLfloat *dst = (GLfloat *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
dst[i] = (rowA[j] + rowA[j+1] + rowB[j] + rowB[j+1]) * 0.25F;
for (i = j = 0, k = k0; i < dstWidth;
i++, j += colStride, k += colStride) {
dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F;
}
}
return;
@@ -1025,57 +1038,60 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
case MESA_FORMAT_RGBA8888:
case MESA_FORMAT_ARGB8888:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
dst[i][2] = (rowA[j][2] + rowA[j+1][2] +
rowB[j][2] + rowB[j+1][2]) >> 2;
dst[i][3] = (rowA[j][3] + rowA[j+1][3] +
rowB[j][3] + rowB[j+1][3]) >> 2;
for (i = j = 0, k = k0; i < 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;
dst[i][2] = (rowA[j][2] + rowA[k][2] +
rowB[j][2] + rowB[k][2]) >> 2;
dst[i][3] = (rowA[j][3] + rowA[k][3] +
rowB[j][3] + rowB[k][3]) >> 2;
}
}
return;
case MESA_FORMAT_RGB888:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
dst[i][2] = (rowA[j][2] + rowA[j+1][2] +
rowB[j][2] + rowB[j+1][2]) >> 2;
for (i = j = 0, k = k0; i < 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;
dst[i][2] = (rowA[j][2] + rowA[k][2] +
rowB[j][2] + rowB[k][2]) >> 2;
}
}
return;
case MESA_FORMAT_RGB565:
{
GLuint i, j;
GLuint i, j, k;
const GLushort *rowA = (const GLushort *) srcRowA;
const GLushort *rowB = (const GLushort *) srcRowB;
GLushort *dst = (GLushort *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
const GLint rowAr0 = rowA[j] & 0x1f;
const GLint rowAr1 = rowA[j+1] & 0x1f;
const GLint rowBr0 = rowB[j] & 0x1f;
const GLint rowBr1 = rowB[j+1] & 0x1f;
const GLint rowAg0 = (rowA[j] >> 5) & 0x3f;
const GLint rowAg1 = (rowA[j+1] >> 5) & 0x3f;
const GLint rowBg0 = (rowB[j] >> 5) & 0x3f;
const GLint rowBg1 = (rowB[j+1] >> 5) & 0x3f;
const GLint rowAb0 = (rowA[j] >> 11) & 0x1f;
const GLint rowAb1 = (rowA[j+1] >> 11) & 0x1f;
const GLint rowBb0 = (rowB[j] >> 11) & 0x1f;
const GLint rowBb1 = (rowB[j+1] >> 11) & 0x1f;
for (i = j = 0, k = k0; i < 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) >> 4;
const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 4;
const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 4;
@@ -1085,27 +1101,28 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
return;
case MESA_FORMAT_ARGB4444:
{
GLuint i, j;
GLuint i, j, k;
const GLushort *rowA = (const GLushort *) srcRowA;
const GLushort *rowB = (const GLushort *) srcRowB;
GLushort *dst = (GLushort *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
const GLint rowAr0 = rowA[j] & 0xf;
const GLint rowAr1 = rowA[j+1] & 0xf;
const GLint rowBr0 = rowB[j] & 0xf;
const GLint rowBr1 = rowB[j+1] & 0xf;
const GLint rowAg0 = (rowA[j] >> 4) & 0xf;
const GLint rowAg1 = (rowA[j+1] >> 4) & 0xf;
const GLint rowBg0 = (rowB[j] >> 4) & 0xf;
const GLint rowBg1 = (rowB[j+1] >> 4) & 0xf;
const GLint rowAb0 = (rowA[j] >> 8) & 0xf;
const GLint rowAb1 = (rowA[j+1] >> 8) & 0xf;
const GLint rowBb0 = (rowB[j] >> 8) & 0xf;
const GLint rowBb1 = (rowB[j+1] >> 8) & 0xf;
const GLint rowAa0 = (rowA[j] >> 12) & 0xf;
const GLint rowAa1 = (rowA[j+1] >> 12) & 0xf;
const GLint rowBa0 = (rowB[j] >> 12) & 0xf;
const GLint rowBa1 = (rowB[j+1] >> 12) & 0xf;
for (i = j = 0, k = k0; i < 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) >> 4;
const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 4;
const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 4;
@@ -1116,27 +1133,28 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
return;
case MESA_FORMAT_ARGB1555:
{
GLuint i, j;
GLuint i, j, k;
const GLushort *rowA = (const GLushort *) srcRowA;
const GLushort *rowB = (const GLushort *) srcRowB;
GLushort *dst = (GLushort *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
const GLint rowAr0 = rowA[j] & 0x1f;
const GLint rowAr1 = rowA[j+1] & 0x1f;
const GLint rowBr0 = rowB[j] & 0x1f;
const GLint rowBr1 = rowB[j+1] & 0xf;
const GLint rowAg0 = (rowA[j] >> 5) & 0x1f;
const GLint rowAg1 = (rowA[j+1] >> 5) & 0x1f;
const GLint rowBg0 = (rowB[j] >> 5) & 0x1f;
const GLint rowBg1 = (rowB[j+1] >> 5) & 0x1f;
const GLint rowAb0 = (rowA[j] >> 10) & 0x1f;
const GLint rowAb1 = (rowA[j+1] >> 10) & 0x1f;
const GLint rowBb0 = (rowB[j] >> 10) & 0x1f;
const GLint rowBb1 = (rowB[j+1] >> 10) & 0x1f;
const GLint rowAa0 = (rowA[j] >> 15) & 0x1;
const GLint rowAa1 = (rowA[j+1] >> 15) & 0x1;
const GLint rowBa0 = (rowB[j] >> 15) & 0x1;
const GLint rowBa1 = (rowB[j+1] >> 15) & 0x1;
for (i = j = 0, k = k0; i < 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) >> 4;
const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 4;
const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 4;
@@ -1147,37 +1165,39 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
return;
case MESA_FORMAT_AL88:
{
GLuint i, j;
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; i < dstWidth; i++, j+=2) {
dst[i][0] = (rowA[j][0] + rowA[j+1][0] +
rowB[j][0] + rowB[j+1][0]) >> 2;
dst[i][1] = (rowA[j][1] + rowA[j+1][1] +
rowB[j][1] + rowB[j+1][1]) >> 2;
for (i = j = 0, k = k0; i < 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_RGB332:
{
GLuint i, j;
GLuint i, j, k;
const GLubyte *rowA = (const GLubyte *) srcRowA;
const GLubyte *rowB = (const GLubyte *) srcRowB;
GLubyte *dst = (GLubyte *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
const GLint rowAr0 = rowA[j] & 0x3;
const GLint rowAr1 = rowA[j+1] & 0x3;
const GLint rowBr0 = rowB[j] & 0x3;
const GLint rowBr1 = rowB[j+1] & 0x3;
const GLint rowAg0 = (rowA[j] >> 2) & 0x7;
const GLint rowAg1 = (rowA[j+1] >> 2) & 0x7;
const GLint rowBg0 = (rowB[j] >> 2) & 0x7;
const GLint rowBg1 = (rowB[j+1] >> 2) & 0x7;
const GLint rowAb0 = (rowA[j] >> 5) & 0x7;
const GLint rowAb1 = (rowA[j+1] >> 5) & 0x7;
const GLint rowBb0 = (rowB[j] >> 5) & 0x7;
const GLint rowBb1 = (rowB[j+1] >> 5) & 0x7;
for (i = j = 0, k = k0; i < 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) >> 4;
const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 4;
const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 4;
@@ -1190,12 +1210,13 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
case MESA_FORMAT_I8:
case MESA_FORMAT_CI8:
{
GLuint i, j;
GLuint i, j, k;
const GLubyte *rowA = (const GLubyte *) srcRowA;
const GLubyte *rowB = (const GLubyte *) srcRowB;
GLubyte *dst = (GLubyte *) dstRow;
for (i = j = 0; i < dstWidth; i++, j+=2) {
dst[i] = (rowA[j] + rowA[j+1] + rowB[j] + rowB[j+1]) >> 2;
for (i = j = 0, k = k0; i < dstWidth;
i++, j += colStride, k += colStride) {
dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2;
}
}
return;
@@ -1205,7 +1226,11 @@ do_row(const struct gl_texture_format *format, GLint dstWidth,
}
/*
* These functions generate a 1/2-size mipmap image from a source image.
* Texture borders are handled by copying or averaging the source image's
* border texels, depending on the scale-down factor.
*/
static void
make_1d_mipmap(const struct gl_texture_format *format, GLint border,
@@ -1221,7 +1246,8 @@ 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, dstWidth - 2 * border, src, src, dst);
do_row(format, srcWidth - 2 * border, src, src,
dstWidth - 2 * border, dst);
if (border) {
/* copy left-most pixel from source */
@@ -1240,11 +1266,16 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
GLint dstWidth, GLint dstHeight, GLubyte *dstPtr)
{
const GLint bpt = format->TexelBytes;
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint dstWidthNB = dstWidth - 2 * border;
const GLint dstHeightNB = dstHeight - 2 * border;
const GLint srcRowStride = bpt * srcWidth;
const GLint dstRowStride = bpt * dstWidth;
const GLubyte *srcA, *srcB;
GLubyte *dst;
GLint row;
GLint row, colStride;
colStride = (srcWidth == dstWidth) ? 1 : 2;
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
@@ -1254,8 +1285,9 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
srcB = srcA;
dst = dstPtr + border * ((dstWidth + 1) * bpt);
for (row = 0; row < dstHeight - 2 * border; row++) {
do_row(format, dstWidth - 2 * border, srcA, srcB, dst);
for (row = 0; row < dstHeightNB; row++) {
do_row(format, srcWidthNB, srcA, srcB,
dstWidthNB, dst);
srcA += 2 * srcRowStride;
srcB += 2 * srcRowStride;
dst += dstRowStride;
@@ -1276,29 +1308,38 @@ 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, dstWidth - 2 * border,
srcPtr + bpt, srcPtr + bpt, dstPtr + bpt);
do_row(format, srcWidthNB,
srcPtr + bpt,
srcPtr + bpt,
dstWidthNB, dstPtr + bpt);
/* upper border */
do_row(format, dstWidth - 2 * border,
do_row(format, srcWidthNB,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
dstWidthNB,
dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt);
/* left and right borders */
for (row = 0; row < dstHeight - 2 * border; row += 2) {
GLubyte tempPixel[32];
GLint srcOffset;
srcOffset = (srcWidth * (row * 2 + 1)) * bpt;
MEMCPY(tempPixel, srcPtr + srcOffset, bpt);
srcOffset = (srcWidth * (row * 2 + 2)) * bpt;
MEMCPY(tempPixel + bpt, srcPtr + srcOffset, bpt);
do_row(format, 1, tempPixel, tempPixel,
dstPtr + (dstWidth * row + 1) * bpt);
srcOffset = (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt;
MEMCPY(tempPixel, srcPtr + srcOffset, bpt);
srcOffset = (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt;
MEMCPY(tempPixel, srcPtr + srcOffset, bpt);
do_row(format, 1, tempPixel, tempPixel,
dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt);
if (srcHeight == dstHeight) {
/* copy border pixel from src to dst */
for (row = 1; row < srcHeight; row++) {
MEMCPY(dstPtr + dstWidth * row * bpt,
srcPtr + srcWidth * row * bpt, bpt);
MEMCPY(dstPtr + (dstWidth * row + dstWidth - 1) * bpt,
srcPtr + (srcWidth * row + srcWidth - 1) * bpt, bpt);
}
}
else {
/* average two src pixels each dest pixel */
for (row = 0; row < dstHeightNB; row += 2) {
do_row(format, 1,
srcPtr + (srcWidth * (row * 2 + 1)) * bpt,
srcPtr + (srcWidth * (row * 2 + 2)) * bpt,
1, dstPtr + (dstWidth * row + 1) * bpt);
do_row(format, 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);
}
}
}
}
@@ -1311,33 +1352,173 @@ make_3d_mipmap(const struct gl_texture_format *format, GLint border,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
GLubyte *dstPtr)
{
GLvoid *tmpRowA = MALLOC(dstWidth * format->TexelBytes);
GLvoid *tmpRowB = MALLOC(dstWidth * format->TexelBytes);
const GLubyte *srcA, *srcB, *srcC, *srcD;
const GLint bpt = format->TexelBytes;
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
const GLint srcDepthNB = srcDepth - 2 * border;
const GLint dstWidthNB = dstWidth - 2 * border;
const GLint dstHeightNB = dstHeight - 2 * border;
const GLint dstDepthNB = dstDepth - 2 * border;
GLvoid *tmpRowA, *tmpRowB;
GLint img, row;
GLint bytesPerSrcImage, bytesPerDstImage;
GLint bytesPerSrcRow, bytesPerDstRow;
GLint srcImageOffset, srcRowOffset;
if (!tmpRowA || !tmpRowB) {
if (tmpRowA)
FREE(tmpRowA);
/* Need two temporary row buffers */
tmpRowA = MALLOC(srcWidth * bpt);
if (!tmpRowA)
return;
tmpRowB = MALLOC(srcWidth * bpt);
if (!tmpRowB) {
FREE(tmpRowA);
return;
}
bytesPerSrcImage = srcWidth * srcHeight * bpt;
bytesPerDstImage = dstWidth * dstHeight * bpt;
bytesPerSrcRow = srcWidth * bpt;
bytesPerDstRow = dstWidth * bpt;
/* Offset between adjacent src images to be averaged together */
srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
/* Offset between adjacent src rows to be averaged together */
srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt;
/*
* XXX lots of work to do here yet
* Need to average together up to 8 src pixels for each dest pixel.
* Break that down into 3 operations:
* 1. take two rows from source image and average them together.
* 2. take two rows from next source image and average them together.
* 3. take the two averaged rows and average them for the final dst row.
*/
for (img = 0; img < dstDepth - 2 * border; img++) {
/*
printf("mip3d %d x %d x %d -> %d x %d x %d\n",
srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth);
*/
for (row = 0; row < dstHeight - 2 * border; row++) {
do_row(format, dstWidth - 2 * border, srcA, srcB, tmpRowA);
do_row(format, dstWidth - 2 * border, srcC, srcD, tmpRowB);
for (img = 0; img < dstDepthNB; img++) {
/* first source image pointer, skipping border */
const GLubyte *imgSrcA = srcPtr
+ (bytesPerSrcImage + bytesPerSrcRow + 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
+ img * bytesPerDstImage;
/* setup the four source row pointers and the dest row pointer */
const GLubyte *srcImgARowA = imgSrcA;
const GLubyte *srcImgARowB = imgSrcA + srcRowOffset;
const GLubyte *srcImgBRowA = imgSrcB;
const GLubyte *srcImgBRowB = imgSrcB + srcRowOffset;
GLubyte *dstImgRow = imgDst;
for (row = 0; row < dstHeightNB; row++) {
/* Average together two rows from first src image */
do_row(format, srcWidthNB, srcImgARowA, srcImgARowB,
srcWidthNB, tmpRowA);
/* Average together two rows from second src image */
do_row(format, srcWidthNB, srcImgBRowA, srcImgBRowB,
srcWidthNB, tmpRowB);
/* Average together the temp rows to make the final row */
do_row(format, srcWidthNB, tmpRowA, tmpRowB,
dstWidthNB, dstImgRow);
/* advance to next rows */
srcImgARowA += bytesPerSrcRow + srcRowOffset;
srcImgARowB += bytesPerSrcRow + srcRowOffset;
srcImgBRowA += bytesPerSrcRow + srcRowOffset;
srcImgBRowB += bytesPerSrcRow + srcRowOffset;
dstImgRow += bytesPerDstRow;
}
}
FREE(tmpRowA);
FREE(tmpRowB);
/* 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,
dstWidth, dstHeight, dstPtr);
/* do back border image */
make_2d_mipmap(format, 1, srcWidth, srcHeight,
srcPtr + bytesPerSrcImage * (srcDepth - 1),
dstWidth, dstHeight,
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 */
for (img = 0; img < dstDepthNB; img++) {
const GLubyte *src;
GLubyte *dst;
/* do border along [img][row=0][col=0] */
src = srcPtr + (img + 1) * bytesPerSrcImage;
dst = dstPtr + (img + 1) * bytesPerDstImage;
MEMCPY(dst, src, bpt);
/* do border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
+ (srcHeight - 1) * bytesPerSrcRow;
dst = dstPtr + (img + 1) * bytesPerDstImage
+ (dstHeight - 1) * bytesPerDstRow;
MEMCPY(dst, src, bpt);
/* 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;
MEMCPY(dst, src, bpt);
/* 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);
MEMCPY(dst, src, bpt);
}
}
else {
/* average border pixels from adjacent src image pairs */
ASSERT(srcDepthNB == 2 * dstDepthNB);
for (img = 0; img < dstDepthNB; img++) {
const GLubyte *src;
GLubyte *dst;
/* 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 border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
+ (srcHeight - 1) * bytesPerSrcRow;
dst = dstPtr + (img + 1) * bytesPerDstImage
+ (dstHeight - 1) * bytesPerDstRow;
do_row(format, 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 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);
}
}
}
}
@@ -1387,8 +1568,8 @@ _mesa_generate_mipmap(GLcontext *ctx,
}
for (level = texObj->BaseLevel; level < texObj->MaxLevel
&& level < ctx->Const.MaxTextureLevels; level++) {
/* generate level+1 from level */
&& level < ctx->Const.MaxTextureLevels - 1; level++) {
/* generate image[level+1] from image[level] */
const struct gl_texture_image *srcImage;
struct gl_texture_image *dstImage;
GLint srcWidth, srcHeight, srcDepth;
@@ -1455,6 +1636,8 @@ _mesa_generate_mipmap(GLcontext *ctx,
dstImage->DriverData = NULL;
dstImage->TexFormat = srcImage->TexFormat;
dstImage->FetchTexel = srcImage->FetchTexel;
ASSERT(dstImage->TexFormat);
ASSERT(dstImage->FetchTexel);
ASSERT(dstWidth * dstHeight * dstDepth * bytesPerTexel > 0);