summaryrefslogtreecommitdiff
path: root/src/mesa/main/mipmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/main/mipmap.c')
-rw-r--r--src/mesa/main/mipmap.c136
1 files changed, 65 insertions, 71 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c
index d35fa6734c..13d90e78fe 100644
--- a/src/mesa/main/mipmap.c
+++ b/src/mesa/main/mipmap.c
@@ -446,30 +446,23 @@ make_1d_mipmap(GLenum datatype, GLuint comps, GLint border,
}
-/**
- * Strides are in bytes. If zero, it'll be computed as width * bpp.
- */
static void
make_2d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight,
- GLint srcRowBytes, const GLubyte *srcPtr,
+ const GLubyte *srcPtr, GLint srcRowStride,
GLint dstWidth, GLint dstHeight,
- GLint dstRowBytes, GLubyte *dstPtr)
+ 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 srcRowBytes = bpt * srcRowStride;
+ const GLint dstRowBytes = bpt * dstRowStride;
const GLubyte *srcA, *srcB;
GLubyte *dst;
GLint row;
- if (!srcRowBytes)
- srcRowBytes = bpt * srcWidth;
-
- if (!dstRowBytes)
- dstRowBytes = bpt * dstWidth;
-
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
if (srcHeight > 1)
@@ -541,11 +534,9 @@ make_2d_mipmap(GLenum datatype, GLuint comps, GLint border,
static void
make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
- GLint srcRowBytes,
- const GLubyte *srcPtr,
+ const GLubyte *srcPtr, GLint srcRowStride,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLint dstRowBytes,
- GLubyte *dstPtr)
+ GLubyte *dstPtr, GLint dstRowStride)
{
const GLint bpt = bytes_per_pixel(datatype, comps);
const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */
@@ -556,6 +547,7 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
GLvoid *tmpRowA, *tmpRowB;
GLint img, row;
GLint bytesPerSrcImage, bytesPerDstImage;
+ GLint bytesPerSrcRow, bytesPerDstRow;
GLint srcImageOffset, srcRowOffset;
(void) srcDepthNB; /* silence warnings */
@@ -573,10 +565,8 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
bytesPerSrcImage = srcWidth * srcHeight * bpt;
bytesPerDstImage = dstWidth * dstHeight * bpt;
- if (!srcRowBytes)
- srcRowBytes = srcWidth * bpt;
- if (!dstRowBytes)
- dstRowBytes = dstWidth * bpt;
+ bytesPerSrcRow = srcWidth * bpt;
+ bytesPerDstRow = dstWidth * bpt;
/* Offset between adjacent src images to be averaged together */
srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
@@ -600,13 +590,13 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
for (img = 0; img < dstDepthNB; img++) {
/* first source image pointer, skipping border */
const GLubyte *imgSrcA = srcPtr
- + (bytesPerSrcImage + srcRowBytes + border) * bpt * border
+ + (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 + dstRowBytes + border) * bpt * border
+ + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border
+ img * bytesPerDstImage;
/* setup the four source row pointers and the dest row pointer */
@@ -627,11 +617,11 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
do_row(datatype, comps, srcWidthNB, tmpRowA, tmpRowB,
dstWidthNB, dstImgRow);
/* advance to next rows */
- srcImgARowA += srcRowBytes + srcRowOffset;
- srcImgARowB += srcRowBytes + srcRowOffset;
- srcImgBRowA += srcRowBytes + srcRowOffset;
- srcImgBRowB += srcRowBytes + srcRowOffset;
- dstImgRow += dstRowBytes;
+ srcImgARowA += bytesPerSrcRow + srcRowOffset;
+ srcImgARowB += bytesPerSrcRow + srcRowOffset;
+ srcImgBRowA += bytesPerSrcRow + srcRowOffset;
+ srcImgBRowB += bytesPerSrcRow + srcRowOffset;
+ dstImgRow += bytesPerDstRow;
}
}
@@ -641,15 +631,13 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
/* 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, 0, srcPtr,
- dstWidth, dstHeight, 0, dstPtr);
+ make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, srcPtr, srcRowStride,
+ dstWidth, dstHeight, dstPtr, dstRowStride);
/* do back border image */
make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight,
- 0,
- srcPtr + bytesPerSrcImage * (srcDepth - 1),
+ srcPtr + bytesPerSrcImage * (srcDepth - 1), srcRowStride,
dstWidth, dstHeight,
- 0,
- dstPtr + bytesPerDstImage * (dstDepth - 1));
+ dstPtr + bytesPerDstImage * (dstDepth - 1), dstRowStride);
/* do four remaining border edges that span the image slices */
if (srcDepth == dstDepth) {
/* just copy border pixels from src to dst */
@@ -664,9 +652,9 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
/* do border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
- + (srcHeight - 1) * srcRowBytes;
+ + (srcHeight - 1) * bytesPerSrcRow;
dst = dstPtr + (img + 1) * bytesPerDstImage
- + (dstHeight - 1) * dstRowBytes;
+ + (dstHeight - 1) * bytesPerDstRow;
MEMCPY(dst, src, bpt);
/* do border along [img][row=0][col=dstWidth-1] */
@@ -698,9 +686,9 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
/* do border along [img][row=dstHeight-1][col=0] */
src = srcPtr + (img * 2 + 1) * bytesPerSrcImage
- + (srcHeight - 1) * srcRowBytes;
+ + (srcHeight - 1) * bytesPerSrcRow;
dst = dstPtr + (img + 1) * bytesPerDstImage
- + (dstHeight - 1) * dstRowBytes;
+ + (dstHeight - 1) * bytesPerDstRow;
do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst);
/* do border along [img][row=0][col=dstWidth-1] */
@@ -724,15 +712,16 @@ make_3d_mipmap(GLenum datatype, GLuint comps, GLint border,
static void
make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
- GLint srcWidth, const GLubyte *srcPtr,
- GLint dstWidth, GLint dstHeight, GLubyte *dstPtr)
+ 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 * srcRowBytes;
- const GLint dstRowBytes = bpt * dstRowBytes;
+ const GLint srcRowBytes = bpt * srcRowStride;
+ const GLint dstRowBytes = bpt * dstRowStride;
const GLubyte *src;
GLubyte *dst;
GLint row;
@@ -767,28 +756,22 @@ make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
static void
make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border,
GLint srcWidth, GLint srcHeight,
- GLint srcRowBytes,
- const GLubyte *srcPtr,
+ const GLubyte *srcPtr, GLint srcRowStride,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLint dstRowBytes,
- GLubyte *dstPtr)
+ 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;
- if (!srcRowBytes)
- srcRowBytes = bpt * srcWidth;
-
- if (!dstRowBytes)
- dstRowBytes = bpt * dstWidth;
-
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
if (srcHeight > 1)
@@ -867,12 +850,15 @@ _mesa_generate_mipmap_level(GLenum target,
GLenum datatype, GLuint comps,
GLint border,
GLint srcWidth, GLint srcHeight, GLint srcDepth,
- GLint srcRowBytes,
const GLubyte *srcData,
+ GLint srcRowStride,
GLint dstWidth, GLint dstHeight, GLint dstDepth,
- GLint dstRowBytes,
- GLubyte *dstData)
+ GLubyte *dstData,
+ GLint dstRowStride)
{
+ /*
+ * We use simple 2x2 averaging to compute the next mipmap level.
+ */
switch (target) {
case GL_TEXTURE_1D:
make_1d_mipmap(datatype, comps, border,
@@ -887,29 +873,35 @@ _mesa_generate_mipmap_level(GLenum target,
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
make_2d_mipmap(datatype, comps, border,
- srcWidth, srcHeight, srcRowBytes, srcData,
- dstWidth, dstHeight, dstRowBytes, dstData);
+ srcWidth, srcHeight, srcData, srcRowStride,
+ dstWidth, dstHeight, dstData, dstRowStride);
break;
case GL_TEXTURE_3D:
make_3d_mipmap(datatype, comps, border,
- srcWidth, srcHeight, srcDepth, srcRowBytes, srcData,
- dstWidth, dstHeight, dstDepth, dstRowBytes, dstData);
+ srcWidth, srcHeight, srcDepth,
+ srcData, srcRowStride,
+ dstWidth, dstHeight, dstDepth,
+ dstData, dstRowStride);
break;
case GL_TEXTURE_1D_ARRAY_EXT:
make_1d_stack_mipmap(datatype, comps, border,
- srcWidth, srcData,
- dstWidth, dstHeight, dstData);
+ srcWidth, srcData, srcRowStride,
+ dstWidth, dstHeight,
+ dstData, dstRowStride);
break;
case GL_TEXTURE_2D_ARRAY_EXT:
make_2d_stack_mipmap(datatype, comps, border,
- srcWidth, srcHeight, srcRowBytes, srcData,
- dstWidth, dstHeight, dstDepth, dstRowBytes, dstData);
+ srcWidth, srcHeight,
+ srcData, srcRowStride,
+ dstWidth, dstHeight,
+ dstDepth, dstData, dstRowStride);
break;
case GL_TEXTURE_RECTANGLE_NV:
/* no mipmaps, do nothing */
break;
default:
- _mesa_problem(NULL, "bad target in _mesa_generate_mipmap_level");
+ _mesa_problem(NULL, "bad dimensions in _mesa_generate_mipmaps");
+ return;
}
}
@@ -1131,23 +1123,25 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
dstData = (GLubyte *) dstImage->Data;
}
- /* Note, 0 indicates default row strides */
_mesa_generate_mipmap_level(target, datatype, comps, border,
- srcWidth, srcHeight, srcDepth, 0, srcData,
- dstWidth, dstHeight, dstDepth, 0, dstData);
+ srcWidth, srcHeight, srcDepth,
+ srcData, srcImage->RowStride,
+ dstWidth, dstHeight, dstDepth,
+ dstData, dstImage->RowStride);
+
if (dstImage->IsCompressed) {
GLubyte *temp;
/* compress image from dstData into dstImage->Data */
const GLenum srcFormat = convertFormat->BaseFormat;
- GLint dstRowBytes
+ GLint dstRowStride
= _mesa_compressed_row_stride(dstImage->TexFormat->MesaFormat, dstWidth);
ASSERT(srcFormat == GL_RGB || srcFormat == GL_RGBA);
dstImage->TexFormat->StoreImage(ctx, 2, dstImage->_BaseFormat,
dstImage->TexFormat,
dstImage->Data,
0, 0, 0, /* dstX/Y/Zoffset */
- dstRowBytes, 0, /* strides */
+ dstRowStride, 0, /* strides */
dstWidth, dstHeight, 1, /* size */
srcFormat, CHAN_TYPE,
dstData, /* src data, actually */
@@ -1172,7 +1166,7 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
void
_mesa_rescale_teximage2d(GLuint bytesPerPixel,
GLuint srcStrideInPixels,
- GLuint dstRowBytes,
+ GLuint dstRowStride,
GLint srcWidth, GLint srcHeight,
GLint dstWidth, GLint dstHeight,
const GLvoid *srcImage, GLvoid *dstImage)
@@ -1186,7 +1180,7 @@ _mesa_rescale_teximage2d(GLuint bytesPerPixel,
GLint srcCol = col WOP wScale; \
dst[col] = src[srcRow * srcStrideInPixels + srcCol]; \
} \
- dst = (TYPE *) ((GLubyte *) dst + dstRowBytes); \
+ dst = (TYPE *) ((GLubyte *) dst + dstRowStride); \
} \
#define RESCALE_IMAGE( TYPE ) \
@@ -1244,7 +1238,7 @@ do { \
void
_mesa_upscale_teximage2d(GLsizei inWidth, GLsizei inHeight,
GLsizei outWidth, GLsizei outHeight,
- GLint comps, const GLchan *src, GLint srcRowBytes,
+ GLint comps, const GLchan *src, GLint srcRowStride,
GLchan *dest )
{
GLint i, j, k;
@@ -1263,7 +1257,7 @@ _mesa_upscale_teximage2d(GLsizei inWidth, GLsizei inHeight,
const GLint jj = j % inWidth;
for (k = 0; k < comps; k++) {
dest[(i * outWidth + j) * comps + k]
- = src[ii * srcRowBytes + jj * comps + k];
+ = src[ii * srcRowStride + jj * comps + k];
}
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 01:17:10 +0000