static GLint
bytes_per_pixel(GLenum datatype, GLuint comps)
{
- GLint b = _mesa_sizeof_packed_type(datatype);
+ GLint b;
+
+ if (datatype == GL_UNSIGNED_INT_8_24_REV_MESA ||
+ datatype == GL_UNSIGNED_INT_24_8_MESA)
+ return 4;
+
+ b = _mesa_sizeof_packed_type(datatype);
assert(b >= 0);
if (_mesa_type_is_packed(datatype))
- return b;
+ return b;
else
- return b * comps;
+ return b * comps;
}
}
}
+ else if (datatype == GL_UNSIGNED_INT_24_8_MESA && comps == 2) {
+ GLuint i, j, k;
+ const GLuint *rowA = (const GLuint *) srcRowA;
+ const GLuint *rowB = (const GLuint *) srcRowB;
+ GLuint *dst = (GLuint *) dstRow;
+ /* note: averaging stencil values seems weird, but what else? */
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ GLuint z = (((rowA[j] >> 8) + (rowA[k] >> 8) +
+ (rowB[j] >> 8) + (rowB[k] >> 8)) / 4) << 8;
+ GLuint s = ((rowA[j] & 0xff) + (rowA[k] & 0xff) +
+ (rowB[j] & 0xff) + (rowB[k] & 0xff)) / 4;
+ dst[i] = z | s;
+ }
+ }
+ else if (datatype == GL_UNSIGNED_INT_8_24_REV_MESA && comps == 2) {
+ GLuint i, j, k;
+ const GLuint *rowA = (const GLuint *) srcRowA;
+ const GLuint *rowB = (const GLuint *) srcRowB;
+ GLuint *dst = (GLuint *) dstRow;
+ for (i = j = 0, k = k0; i < (GLuint) dstWidth;
+ i++, j += colStride, k += colStride) {
+ GLuint z = ((rowA[j] & 0xffffff) + (rowA[k] & 0xffffff) +
+ (rowB[j] & 0xffffff) + (rowB[k] & 0xffffff)) / 4;
+ GLuint s = (((rowA[j] >> 24) + (rowA[k] >> 24) +
+ (rowB[j] >> 24) + (rowB[k] >> 24)) / 4) << 24;
+ dst[i] = z | s;
+ }
+ }
+
else {
_mesa_problem(NULL, "bad format in do_row()");
}
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, srcRowStep;
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
if (srcHeight > 1 && srcHeight > dstHeight) {
/* sample from two source rows */
- srcB = srcA + srcRowBytes;
+ srcB = srcA + srcRowStride;
srcRowStep = 2;
}
else {
for (row = 0; row < dstHeightNB; row++) {
do_row(datatype, comps, srcWidthNB, srcA, srcB,
dstWidthNB, dst);
- srcA += srcRowStep * srcRowBytes;
- srcB += srcRowStep * srcRowBytes;
- dst += dstRowBytes;
+ srcA += srcRowStep * srcRowStride;
+ srcB += srcRowStep * srcRowStride;
+ dst += dstRowStride;
}
/* This is ugly but probably won't be used much */
static void
make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
- const GLubyte *srcPtr, GLint srcRowStride,
+ const GLubyte **srcPtr, GLint srcRowStride,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLubyte *dstPtr, GLint dstRowStride)
+ GLubyte **dstPtr, GLint dstRowStride)
{
const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
bytesPerDstRow = dstWidth * bpt;
/* Offset between adjacent src images to be averaged together */
- srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
+ srcImageOffset = (srcDepth == dstDepth) ? 0 : 1;
/* Offset between adjacent src rows to be averaged together */
srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt;
for (img = 0; img < dstDepthNB; img++) {
/* first source image pointer, skipping border */
- const GLubyte *imgSrcA = srcPtr
- + (bytesPerSrcImage + bytesPerSrcRow + border) * bpt * border
- + img * (bytesPerSrcImage + srcImageOffset);
+ const GLubyte *imgSrcA = srcPtr[img * 2 + border]
+ + bytesPerSrcRow * border + bpt * border;
/* second source image pointer, skipping border */
- const GLubyte *imgSrcB = imgSrcA + srcImageOffset;
+ const GLubyte *imgSrcB = srcPtr[img * 2 + srcImageOffset + border]
+ + bytesPerSrcRow * border + bpt * border;
+
/* address of the dest image, skipping border */
- GLubyte *imgDst = dstPtr
- + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border
- + img * bytesPerDstImage;
+ GLubyte *imgDst = dstPtr[img + border]
+ + bytesPerDstRow * border + bpt * border;
/* setup the four source row pointers and the dest row pointer */
const GLubyte *srcImgARowA = imgSrcA;
/* Luckily we can leverage the make_2d_mipmap() function here! */
if (border > 0) {
/* do front border image */
- make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, srcPtr, srcRowStride,
- dstWidth, dstHeight, dstPtr, dstRowStride);
+ make_2d_mipmap(datatype, comps, 1,
+ srcWidth, srcHeight, srcPtr[0], srcRowStride,
+ dstWidth, dstHeight, dstPtr[0], dstRowStride);
/* do back border image */
- make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight,
- srcPtr + bytesPerSrcImage * (srcDepth - 1), srcRowStride,
- dstWidth, dstHeight,
- dstPtr + bytesPerDstImage * (dstDepth - 1), dstRowStride);
+ make_2d_mipmap(datatype, comps, 1,
+ srcWidth, srcHeight, srcPtr[srcDepth - 1], srcRowStride,
+ dstWidth, dstHeight, dstPtr[dstDepth - 1], dstRowStride);
+
/* do four remaining border edges that span the image slices */
if (srcDepth == dstDepth) {
/* just copy border pixels from src to dst */
GLubyte *dst;
/* do border along [img][row=0][col=0] */
- src = srcPtr + (img + 1) * bytesPerSrcImage;
- dst = dstPtr + (img + 1) * bytesPerDstImage;
+ src = srcPtr[img * 2];
+ dst = dstPtr[img];
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;
+ src = srcPtr[img * 2] + (srcHeight - 1) * bytesPerSrcRow;
+ dst = dstPtr[img] + (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;
+ src = srcPtr[img * 2] + (srcWidth - 1) * bpt;
+ dst = dstPtr[img] + (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);
+ src = srcPtr[img * 2] + (bytesPerSrcImage - bpt);
+ dst = dstPtr[img] + (bytesPerDstImage - bpt);
memcpy(dst, src, bpt);
}
}
/* average border pixels from adjacent src image pairs */
ASSERT(srcDepthNB == 2 * dstDepthNB);
for (img = 0; img < dstDepthNB; img++) {
- const GLubyte *src;
+ const GLubyte *srcA, *srcB;
GLubyte *dst;
/* do border along [img][row=0][col=0] */
- src = srcPtr + (img * 2 + 1) * bytesPerSrcImage;
- dst = dstPtr + (img + 1) * bytesPerDstImage;
- do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
+ srcA = srcPtr[img * 2 + 0];
+ srcB = srcPtr[img * 2 + srcImageOffset];
+ dst = dstPtr[img];
+ do_row(datatype, comps, 1, srcA, srcB, 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(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
+ srcA = srcPtr[img * 2 + 0]
+ + (srcHeight - 1) * bytesPerSrcRow;
+ srcB = srcPtr[img * 2 + srcImageOffset]
+ + (srcHeight - 1) * bytesPerSrcRow;
+ dst = dstPtr[img] + (dstHeight - 1) * bytesPerDstRow;
+ do_row(datatype, comps, 1, srcA, srcB, 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(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
+ srcA = srcPtr[img * 2 + 0] + (srcWidth - 1) * bpt;
+ srcB = srcPtr[img * 2 + srcImageOffset] + (srcWidth - 1) * bpt;
+ dst = dstPtr[img] + (dstWidth - 1) * bpt;
+ do_row(datatype, comps, 1, srcA, srcB, 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(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
- }
- }
- }
-}
-
-
-static void
-make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
- GLint srcWidth, const GLubyte *srcPtr, GLuint srcRowStride,
- GLint dstWidth, GLint dstHeight,
- GLubyte *dstPtr, GLuint dstRowStride )
-{
- 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 *src;
- GLubyte *dst;
- GLint row;
-
- /* Compute src and dst pointers, skipping any border */
- src = srcPtr + border * ((srcWidth + 1) * bpt);
- dst = dstPtr + border * ((dstWidth + 1) * bpt);
-
- for (row = 0; row < dstHeightNB; row++) {
- do_row(datatype, comps, srcWidthNB, src, src,
- dstWidthNB, dst);
- src += srcRowBytes;
- dst += dstRowBytes;
- }
-
- if (border) {
- /* copy left-most pixel from source */
- assert(dstPtr);
- assert(srcPtr);
- memcpy(dstPtr, srcPtr, bpt);
- /* copy right-most pixel from source */
- memcpy(dstPtr + (dstWidth - 1) * bpt,
- srcPtr + (srcWidth - 1) * bpt,
- bpt);
- }
-}
-
-
-/**
- * \bug
- * There is quite a bit of refactoring that could be done with this function
- * and \c make_2d_mipmap.
- */
-static void
-make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
- GLint srcWidth, GLint srcHeight,
- const GLubyte *srcPtr, GLint srcRowStride,
- GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLubyte *dstPtr, GLint dstRowStride)
-{
- 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;
-
- /* Compute src and dst pointers, skipping any border */
- srcA = srcPtr + border * ((srcWidth + 1) * bpt);
- if (srcHeight > 1)
- srcB = srcA + srcRowBytes;
- else
- srcB = srcA;
- dst = dstPtr + border * ((dstWidth + 1) * bpt);
-
- for (layer = 0; layer < dstDepthNB; layer++) {
- for (row = 0; row < dstHeightNB; row++) {
- do_row(datatype, comps, srcWidthNB, srcA, srcB,
- dstWidthNB, dst);
- srcA += 2 * srcRowBytes;
- srcB += 2 * srcRowBytes;
- dst += dstRowBytes;
- }
-
- /* This is ugly but probably won't be used much */
- if (border > 0) {
- /* fill in dest border */
- /* lower-left border pixel */
- assert(dstPtr);
- assert(srcPtr);
- memcpy(dstPtr, srcPtr, bpt);
- /* lower-right border pixel */
- memcpy(dstPtr + (dstWidth - 1) * bpt,
- srcPtr + (srcWidth - 1) * bpt, bpt);
- /* upper-left border pixel */
- memcpy(dstPtr + dstWidth * (dstHeight - 1) * bpt,
- srcPtr + srcWidth * (srcHeight - 1) * bpt, bpt);
- /* upper-right border pixel */
- memcpy(dstPtr + (dstWidth * dstHeight - 1) * bpt,
- srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt);
- /* lower border */
- do_row(datatype, comps, srcWidthNB,
- srcPtr + bpt,
- srcPtr + bpt,
- dstWidthNB, dstPtr + bpt);
- /* upper border */
- do_row(datatype, comps, srcWidthNB,
- srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
- srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt,
- dstWidthNB,
- dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt);
- /* left and right borders */
- 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(datatype, comps, 1,
- srcPtr + (srcWidth * (row * 2 + 1)) * bpt,
- srcPtr + (srcWidth * (row * 2 + 2)) * bpt,
- 1, dstPtr + (dstWidth * row + 1) * bpt);
- 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);
- }
+ srcA = srcPtr[img * 2 + 0] + (bytesPerSrcImage - bpt);
+ srcB = srcPtr[img * 2 + srcImageOffset] + (bytesPerSrcImage - bpt);
+ dst = dstPtr[img] + (bytesPerDstImage - bpt);
+ do_row(datatype, comps, 1, srcA, srcB, 1, dst);
}
}
}
/**
* Down-sample a texture image to produce the next lower mipmap level.
* \param comps components per texel (1, 2, 3 or 4)
- * \param srcRowStride stride between source rows, in texels
- * \param dstRowStride stride between destination rows, in texels
+ * \param srcData array[slice] of pointers to source image slices
+ * \param dstData array[slice] of pointers to dest image slices
+ * \param srcRowStride stride between source rows, in bytes
+ * \param dstRowStride stride between destination rows, in bytes
*/
void
_mesa_generate_mipmap_level(GLenum target,
GLenum datatype, GLuint comps,
GLint border,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
- const GLubyte *srcData,
+ const GLubyte **srcData,
GLint srcRowStride,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLubyte *dstData,
+ GLubyte **dstData,
GLint dstRowStride)
{
- /*
- * We use simple 2x2 averaging to compute the next mipmap level.
- */
+ int i;
+
switch (target) {
case GL_TEXTURE_1D:
make_1d_mipmap(datatype, comps, border,
- srcWidth, srcData,
- dstWidth, dstData);
+ srcWidth, srcData[0],
+ dstWidth, dstData[0]);
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_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, srcData, srcRowStride,
- dstWidth, dstHeight, dstData, dstRowStride);
+ srcWidth, srcHeight, srcData[0], srcRowStride,
+ dstWidth, dstHeight, dstData[0], dstRowStride);
break;
case GL_TEXTURE_3D:
make_3d_mipmap(datatype, comps, border,
dstData, dstRowStride);
break;
case GL_TEXTURE_1D_ARRAY_EXT:
- make_1d_stack_mipmap(datatype, comps, border,
- srcWidth, srcData, srcRowStride,
- dstWidth, dstHeight,
- dstData, dstRowStride);
+ assert(srcHeight == 1);
+ assert(dstHeight == 1);
+ for (i = 0; i < dstDepth; i++) {
+ make_1d_mipmap(datatype, comps, border,
+ srcWidth, srcData[i],
+ dstWidth, dstData[i]);
+ }
break;
case GL_TEXTURE_2D_ARRAY_EXT:
- make_2d_stack_mipmap(datatype, comps, border,
- srcWidth, srcHeight,
- srcData, srcRowStride,
- dstWidth, dstHeight,
- dstDepth, dstData, dstRowStride);
+ for (i = 0; i < dstDepth; i++) {
+ make_2d_mipmap(datatype, comps, border,
+ srcWidth, srcHeight, srcData[i], srcRowStride,
+ dstWidth, dstHeight, dstData[i], dstRowStride);
+ }
break;
case GL_TEXTURE_RECTANGLE_NV:
+ case GL_TEXTURE_EXTERNAL_OES:
/* no mipmaps, do nothing */
break;
default:
- _mesa_problem(NULL, "bad dimensions in _mesa_generate_mipmaps");
+ _mesa_problem(NULL, "bad tex target in _mesa_generate_mipmaps");
return;
}
}
for (level = texObj->BaseLevel; level < maxLevel; level++) {
/* generate image[level+1] from image[level] */
- const struct gl_texture_image *srcImage;
- struct gl_texture_image *dstImage;
+ struct gl_texture_image *srcImage, *dstImage;
+ GLint srcRowStride, dstRowStride;
GLint srcWidth, srcHeight, srcDepth;
GLint dstWidth, dstHeight, dstDepth;
GLint border;
+ GLint slice;
GLboolean nextLevel;
+ GLubyte **srcMaps, **dstMaps;
+ GLboolean success = GL_TRUE;
/* get src image parameters */
srcImage = _mesa_select_tex_image(ctx, texObj, target, level);
}
/* Free old image data */
- if (dstImage->Data)
- ctx->Driver.FreeTexImageData(ctx, dstImage);
+ ctx->Driver.FreeTextureImageBuffer(ctx, dstImage);
- /* initialize new image */
_mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
dstDepth, border, srcImage->InternalFormat,
srcImage->TexFormat);
- dstImage->DriverData = NULL;
- dstImage->FetchTexelc = srcImage->FetchTexelc;
- dstImage->FetchTexelf = srcImage->FetchTexelf;
- /* Alloc new teximage data buffer */
- {
- GLuint size = _mesa_format_image_size(dstImage->TexFormat,
- dstWidth, dstHeight, dstDepth);
- dstImage->Data = _mesa_alloc_texmemory(size);
- if (!dstImage->Data) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
- return;
- }
+ /* Alloc storage for new texture image */
+ if (!ctx->Driver.AllocTextureImageBuffer(ctx, dstImage,
+ dstImage->TexFormat,
+ dstWidth, dstHeight,
+ dstDepth)) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
+ return;
}
ASSERT(dstImage->TexFormat);
- ASSERT(dstImage->FetchTexelc);
- ASSERT(dstImage->FetchTexelf);
- _mesa_generate_mipmap_level(target, datatype, comps, border,
- srcWidth, srcHeight, srcDepth,
- srcImage->Data, srcImage->RowStride,
- dstWidth, dstHeight, dstDepth,
- dstImage->Data, dstImage->RowStride);
+ if (target == GL_TEXTURE_1D_ARRAY) {
+ srcDepth = srcHeight;
+ dstDepth = dstHeight;
+ srcHeight = 1;
+ dstHeight = 1;
+ }
+
+ /* Map src texture image slices */
+ srcMaps = (GLubyte **) calloc(srcDepth, sizeof(GLubyte *));
+ if (srcMaps) {
+ for (slice = 0; slice < srcDepth; slice++) {
+ ctx->Driver.MapTextureImage(ctx, srcImage, slice,
+ 0, 0, srcWidth, srcHeight,
+ GL_MAP_READ_BIT,
+ &srcMaps[slice], &srcRowStride);
+ if (!srcMaps[slice]) {
+ success = GL_FALSE;
+ break;
+ }
+ }
+ }
+ else {
+ success = GL_FALSE;
+ }
+
+ /* Map dst texture image slices */
+ dstMaps = (GLubyte **) calloc(dstDepth, sizeof(GLubyte *));
+ if (dstMaps) {
+ for (slice = 0; slice < dstDepth; slice++) {
+ ctx->Driver.MapTextureImage(ctx, dstImage, slice,
+ 0, 0, dstWidth, dstHeight,
+ GL_MAP_WRITE_BIT,
+ &dstMaps[slice], &dstRowStride);
+ if (!dstMaps[slice]) {
+ success = GL_FALSE;
+ break;
+ }
+ }
+ }
+ else {
+ success = GL_FALSE;
+ }
+
+ if (success) {
+ /* generate one mipmap level (for 1D/2D/3D/array/etc texture) */
+ _mesa_generate_mipmap_level(target, datatype, comps, border,
+ srcWidth, srcHeight, srcDepth,
+ (const GLubyte **) srcMaps, srcRowStride,
+ dstWidth, dstHeight, dstDepth,
+ dstMaps, dstRowStride);
+ }
+
+ /* Unmap src image slices */
+ if (srcMaps) {
+ for (slice = 0; slice < srcDepth; slice++) {
+ if (srcMaps[slice]) {
+ ctx->Driver.UnmapTextureImage(ctx, srcImage, slice);
+ }
+ }
+ free(srcMaps);
+ }
+
+ /* Unmap dst image slices */
+ if (dstMaps) {
+ for (slice = 0; slice < dstDepth; slice++) {
+ if (dstMaps[slice]) {
+ ctx->Driver.UnmapTextureImage(ctx, dstImage, slice);
+ }
+ }
+ free(dstMaps);
+ }
+ if (!success) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "mipmap generation");
+ break;
+ }
} /* loop over mipmap levels */
}
+
static void
generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj,
- const struct gl_texture_image *srcImage,
+ struct gl_texture_image *srcImage,
GLuint maxLevel)
{
GLint level;
gl_format temp_format;
- GLenum datatype;
- GLuint comps;
- GLuint row;
GLint components;
- GLuint temp_src_stride, temp_dst_stride; /* in bytes */
- GLchan *temp_src = NULL, *temp_dst = NULL;
+ GLuint temp_src_stride; /* in bytes */
+ GLubyte *temp_src = NULL, *temp_dst = NULL;
+ GLenum temp_datatype;
+ GLenum temp_base_format;
- /* Choose the format we will do _mesa_generate_mipmap_level() in,
- * and uncompress the firstImage into a temporary of that format.
- */
+ /* only two types of compressed textures at this time */
assert(texObj->Target == GL_TEXTURE_2D ||
texObj->Target == GL_TEXTURE_CUBE_MAP_ARB);
- if (srcImage->_BaseFormat == GL_RGB) {
- temp_format = MESA_FORMAT_RGB888;
- components = 3;
- } else if (srcImage->_BaseFormat == GL_RED) {
- temp_format = MESA_FORMAT_R8;
- components = 1;
- } else if (srcImage->_BaseFormat == GL_RG) {
- temp_format = MESA_FORMAT_RG88;
- components = 2;
- } else if (srcImage->_BaseFormat == GL_RGBA) {
- temp_format = MESA_FORMAT_RGBA8888;
- components = 4;
- } else if (srcImage->_BaseFormat == GL_LUMINANCE) {
- temp_format = MESA_FORMAT_L8;
- components = 1;
- } else if (srcImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
- temp_format = MESA_FORMAT_AL88;
- components = 2;
- } else {
- _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps");
- return;
+ /*
+ * Choose a format for the temporary, uncompressed base image.
+ * Then, get number of components, choose temporary image datatype,
+ * and get base format.
+ */
+ temp_format = _mesa_get_uncompressed_format(srcImage->TexFormat);
+
+ components = _mesa_format_num_components(temp_format);
+
+ /* Revisit this if we get compressed formats with >8 bits per component */
+ if (_mesa_get_format_datatype(srcImage->TexFormat)
+ == GL_SIGNED_NORMALIZED) {
+ temp_datatype = GL_BYTE;
+ }
+ else {
+ temp_datatype = GL_UNSIGNED_BYTE;
}
- /* allocate storage for uncompressed GL_RGB or GL_RGBA images */
- temp_src_stride = _mesa_format_row_stride(temp_format, srcImage->Width);
+ temp_base_format = _mesa_get_format_base_format(temp_format);
+
+
+ /* allocate storage for the temporary, uncompressed image */
/* 20 extra bytes, just be safe when calling last FetchTexel */
+ temp_src_stride = _mesa_format_row_stride(temp_format, srcImage->Width);
temp_src = (GLubyte *) malloc(temp_src_stride * srcImage->Height + 20);
if (!temp_src) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
}
/* decompress base image to the temporary */
- for (row = 0; row < srcImage->Height; row++) {
- GLuint col;
- GLchan *dst = (GLchan *) temp_src + temp_src_stride * row;
- for (col = 0; col < srcImage->Width; col++) {
- srcImage->FetchTexelc(srcImage, col, row, 0, dst);
- dst += components;
- }
+ {
+ /* save pixel packing mode */
+ struct gl_pixelstore_attrib save = ctx->Pack;
+ /* use default/tight packing parameters */
+ ctx->Pack = ctx->DefaultPacking;
+
+ /* Get the uncompressed image */
+ assert(srcImage->Level == texObj->BaseLevel);
+ ctx->Driver.GetTexImage(ctx,
+ temp_base_format, temp_datatype,
+ temp_src, srcImage);
+ /* restore packing mode */
+ ctx->Pack = save;
}
- _mesa_format_to_type_and_comps(temp_format, &datatype, &comps);
for (level = texObj->BaseLevel; level < maxLevel; level++) {
/* generate image[level+1] from image[level] */
GLint dstWidth, dstHeight, dstDepth;
GLint border;
GLboolean nextLevel;
+ GLuint temp_dst_stride; /* in bytes */
/* get src image parameters */
srcImage = _mesa_select_tex_image(ctx, texObj, target, level);
dstImage = _mesa_get_tex_image(ctx, texObj, target, level + 1);
if (!dstImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
+ free(temp_dst);
return;
}
- _mesa_generate_mipmap_level(target, datatype, comps, border,
+ /* Free old image data */
+ ctx->Driver.FreeTextureImageBuffer(ctx, dstImage);
+
+ _mesa_generate_mipmap_level(target, temp_datatype, components, border,
srcWidth, srcHeight, srcDepth,
- temp_src, temp_src_stride / components,
+ (const GLubyte **) &temp_src,
+ temp_src_stride,
dstWidth, dstHeight, dstDepth,
- temp_dst, temp_dst_stride / components);
+ &temp_dst, temp_dst_stride);
/* initialize new image */
_mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
dstDepth, border, srcImage->InternalFormat,
srcImage->TexFormat);
+ /* Free old dest texture image buffer */
+ ctx->Driver.FreeTextureImageBuffer(ctx, dstImage);
+
ctx->Driver.TexImage2D(ctx, target, level + 1,
srcImage->InternalFormat,
dstWidth, dstHeight, border,
- _mesa_get_format_base_format(temp_format),
- GL_UNSIGNED_BYTE,
+ temp_base_format, temp_datatype,
temp_dst, &ctx->DefaultPacking, texObj, dstImage);
/* swap src and dest pointers */
{
- GLchan *temp = temp_src;
+ GLubyte *temp = temp_src;
temp_src = temp_dst;
temp_dst = temp;
-
temp_src_stride = temp_dst_stride;
}
} /* loop over mipmap levels */
- free((void *) temp_src);
+ free(temp_src);
free(temp_dst);
}
_mesa_generate_mipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
- const struct gl_texture_image *srcImage;
+ struct gl_texture_image *srcImage;
GLint maxLevel;
ASSERT(texObj);
generate_mipmap_uncompressed(ctx, target, texObj, srcImage, maxLevel);
}
}
-
-
-/**
- * Helper function for drivers which need to rescale texture images to
- * certain aspect ratios.
- * Nearest filtering only (for broken hardware that can't support
- * all aspect ratios). This can be made a lot faster, but I don't
- * really care enough...
- */
-void
-_mesa_rescale_teximage2d(GLuint bytesPerPixel,
- GLuint srcStrideInPixels,
- GLuint dstRowStride,
- GLint srcWidth, GLint srcHeight,
- GLint dstWidth, GLint dstHeight,
- const GLvoid *srcImage, GLvoid *dstImage)
-{
- GLint row, col;
-
-#define INNER_LOOP( TYPE, HOP, WOP ) \
- for ( row = 0 ; row < dstHeight ; row++ ) { \
- GLint srcRow = row HOP hScale; \
- for ( col = 0 ; col < dstWidth ; col++ ) { \
- GLint srcCol = col WOP wScale; \
- dst[col] = src[srcRow * srcStrideInPixels + srcCol]; \
- } \
- dst = (TYPE *) ((GLubyte *) dst + dstRowStride); \
- } \
-
-#define RESCALE_IMAGE( TYPE ) \
-do { \
- const TYPE *src = (const TYPE *)srcImage; \
- TYPE *dst = (TYPE *)dstImage; \
- \
- if ( srcHeight < dstHeight ) { \
- const GLint hScale = dstHeight / srcHeight; \
- if ( srcWidth < dstWidth ) { \
- const GLint wScale = dstWidth / srcWidth; \
- INNER_LOOP( TYPE, /, / ); \
- } \
- else { \
- const GLint wScale = srcWidth / dstWidth; \
- INNER_LOOP( TYPE, /, * ); \
- } \
- } \
- else { \
- const GLint hScale = srcHeight / dstHeight; \
- if ( srcWidth < dstWidth ) { \
- const GLint wScale = dstWidth / srcWidth; \
- INNER_LOOP( TYPE, *, / ); \
- } \
- else { \
- const GLint wScale = srcWidth / dstWidth; \
- INNER_LOOP( TYPE, *, * ); \
- } \
- } \
-} while (0)
-
- switch ( bytesPerPixel ) {
- case 4:
- RESCALE_IMAGE( GLuint );
- break;
-
- case 2:
- RESCALE_IMAGE( GLushort );
- break;
-
- case 1:
- RESCALE_IMAGE( GLubyte );
- break;
- default:
- _mesa_problem(NULL,"unexpected bytes/pixel in _mesa_rescale_teximage2d");
- }
-}
-
-
-/**
- * Upscale an image by replication, not (typical) stretching.
- * We use this when the image width or height is less than a
- * certain size (4, 8) and we need to upscale an image.
- */
-void
-_mesa_upscale_teximage2d(GLsizei inWidth, GLsizei inHeight,
- GLsizei outWidth, GLsizei outHeight,
- GLint comps, const GLchan *src, GLint srcRowStride,
- GLchan *dest )
-{
- GLint i, j, k;
-
- ASSERT(outWidth >= inWidth);
- ASSERT(outHeight >= inHeight);
-#if 0
- ASSERT(inWidth == 1 || inWidth == 2 || inHeight == 1 || inHeight == 2);
- ASSERT((outWidth & 3) == 0);
- ASSERT((outHeight & 3) == 0);
-#endif
-
- for (i = 0; i < outHeight; i++) {
- const GLint ii = i % inHeight;
- for (j = 0; j < outWidth; j++) {
- const GLint jj = j % inWidth;
- for (k = 0; k < comps; k++) {
- dest[(i * outWidth + j) * comps + k]
- = src[ii * srcRowStride + jj * comps + k];
- }
- }
- }
-}
-
projects / mesa.git / blobdiff