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Diffstat (limited to 'src/mesa/main/mipmap.c')
-rw-r--r--src/mesa/main/mipmap.c148
1 files changed, 145 insertions, 3 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c
index cc1fb97eed..9f3db22b75 100644
--- a/src/mesa/main/mipmap.c
+++ b/src/mesa/main/mipmap.c
@@ -551,7 +551,7 @@ make_2d_mipmap(const struct gl_texture_format *format, GLint border,
/* Compute src and dst pointers, skipping any border */
srcA = srcPtr + border * ((srcWidth + 1) * bpt);
- if (srcHeight > 1)
+ if (srcHeight > 1)
srcB = srcA + srcRowStride;
else
srcB = srcA;
@@ -796,6 +796,136 @@ 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,
+ 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 *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(format, srcWidthNB, src, src,
+ dstWidthNB, dst);
+ src += srcRowStride;
+ dst += dstRowStride;
+ }
+
+ if (border) {
+ /* copy left-most pixel from source */
+ MEMCPY(dstPtr, srcPtr, bpt);
+ /* copy right-most pixel from source */
+ MEMCPY(dstPtr + (dstWidth - 1) * bpt,
+ srcPtr + (srcWidth - 1) * bpt,
+ bpt);
+ }
+}
+
+
+/**
+ * \bugs
+ * 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(const struct gl_texture_format *format, GLint border,
+ GLint srcWidth, GLint srcHeight, const GLubyte *srcPtr,
+ GLint dstWidth, GLint dstHeight, GLint dstDepth,
+ 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 dstDepthNB = dstDepth - 2 * border;
+ const GLint srcRowStride = bpt * srcWidth;
+ const GLint dstRowStride = bpt * dstWidth;
+ 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 + srcRowStride;
+ else
+ srcB = srcA;
+ dst = dstPtr + border * ((dstWidth + 1) * bpt);
+
+ for (layer = 0; layer < dstDepthNB; layer++) {
+ for (row = 0; row < dstHeightNB; row++) {
+ do_row(format, srcWidthNB, srcA, srcB,
+ dstWidthNB, dst);
+ srcA += 2 * srcRowStride;
+ srcB += 2 * srcRowStride;
+ dst += dstRowStride;
+ }
+
+ /* This is ugly but probably won't be used much */
+ if (border > 0) {
+ /* fill in dest border */
+ /* lower-left border pixel */
+ 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(format, srcWidthNB,
+ srcPtr + bpt,
+ srcPtr + bpt,
+ dstWidthNB, dstPtr + bpt);
+ /* upper 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 */
+ 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);
+ }
+ }
+ }
+ }
+}
+
+
/**
* For GL_SGIX_generate_mipmap:
* Generate a complete set of mipmaps from texObj's base-level image.
@@ -897,13 +1027,15 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
else {
dstWidth = srcWidth; /* can't go smaller */
}
- if (srcHeight - 2 * border > 1) {
+ 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) {
+ if ((srcDepth - 2 * border > 1) &&
+ (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT)) {
dstDepth = (srcDepth - 2 * border) / 2 + 2 * border;
}
else {
@@ -1007,6 +1139,16 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
srcWidth, srcHeight, srcDepth, srcData,
dstWidth, dstHeight, dstDepth, dstData);
break;
+ case GL_TEXTURE_1D_ARRAY_EXT:
+ make_1d_stack_mipmap(convertFormat, border,
+ srcWidth, srcData,
+ dstWidth, dstHeight, dstData);
+ break;
+ case GL_TEXTURE_2D_ARRAY_EXT:
+ make_2d_stack_mipmap(convertFormat, border,
+ srcWidth, srcHeight, srcData,
+ dstWidth, dstHeight, dstDepth, dstData);
+ break;
case GL_TEXTURE_RECTANGLE_NV:
/* no mipmaps, do nothing */
break;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 12:33:48 +0000