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-rw-r--r--src/mesa/main/image.c560
1 files changed, 277 insertions, 283 deletions
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c
index 7c4fa88782..4cbf677072 100644
--- a/src/mesa/main/image.c
+++ b/src/mesa/main/image.c
@@ -1,4 +1,4 @@
-/* $Id: image.c,v 1.44 2000/10/28 20:41:14 brianp Exp $ */
+/* $Id: image.c,v 1.45 2000/10/29 18:12:15 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -596,73 +596,201 @@ _mesa_pack_polygon_stipple( const GLuint pattern[32], GLubyte *dest,
}
+/*
+ * Unpack bitmap data. Resulting data will be in most-significant-bit-first
+ * order with row alignment = 1 byte.
+ */
+GLvoid *
+_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
+ const struct gl_pixelstore_attrib *packing )
+{
+ GLint bytes, row, width_in_bytes;
+ GLubyte *buffer, *dst;
+
+ if (!pixels)
+ return NULL;
+
+ /* Alloc dest storage */
+ bytes = ((width + 7) / 8 * height);
+ buffer = (GLubyte *) MALLOC( bytes );
+ if (!buffer)
+ return NULL;
+
+
+ width_in_bytes = CEILING( width, 8 );
+ dst = buffer;
+ for (row = 0; row < height; row++) {
+ GLubyte *src = _mesa_image_address( packing, pixels, width, height,
+ GL_COLOR_INDEX, GL_BITMAP,
+ 0, row, 0 );
+ if (!src) {
+ FREE(buffer);
+ return NULL;
+ }
+
+ if (packing->SkipPixels == 0) {
+ MEMCPY( dst, src, width_in_bytes );
+ if (packing->LsbFirst) {
+ flip_bytes( dst, width_in_bytes );
+ }
+ }
+ else {
+ /* handling SkipPixels is a bit tricky (no pun intended!) */
+ GLint i;
+ if (packing->LsbFirst) {
+ GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
+ }
+ if (srcMask == 128) {
+ srcMask = 1;
+ s++;
+ }
+ else {
+ srcMask = srcMask << 1;
+ }
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
+ }
+ else {
+ dstMask = dstMask >> 1;
+ }
+ }
+ }
+ else {
+ GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
+ }
+ if (srcMask == 1) {
+ srcMask = 128;
+ s++;
+ }
+ else {
+ srcMask = srcMask >> 1;
+ }
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
+ }
+ else {
+ dstMask = dstMask >> 1;
+ }
+ }
+ }
+ }
+ dst += width_in_bytes;
+ }
+
+ return buffer;
+}
+
/*
- * Pack the given RGBA span into client memory at 'dest' address
- * in the given pixel format and type.
- * Optionally apply the enabled pixel transfer ops.
- * Pack into memory using the given packing params struct.
- * This is used by glReadPixels and glGetTexImage?D()
- * Input: ctx - the context
- * n - number of pixels in the span
- * rgba - the pixels
- * format - dest packing format
- * type - dest packing datatype
- * destination - destination packing address
- * packing - pixel packing parameters
- * transferOps - bitmask of IMAGE_*_BIT operations to apply
+ * Pack bitmap data.
*/
void
-_mesa_pack_rgba_span( GLcontext *ctx,
- GLuint n, CONST GLubyte srcRgba[][4],
- GLenum dstFormat, GLenum dstType,
- GLvoid *dstAddr,
- const struct gl_pixelstore_attrib *dstPacking,
- GLuint transferOps)
+_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
+ GLubyte *dest, const struct gl_pixelstore_attrib *packing )
{
- ASSERT(ctx->ImageTransferState != UPDATE_IMAGE_TRANSFER_STATE);
+ GLint row, width_in_bytes;
+ const GLubyte *src;
- /* Test for optimized case first */
- if (transferOps == 0 && dstFormat == GL_RGBA
- && dstType == GL_UNSIGNED_BYTE) {
- /* common simple case */
- MEMCPY(dstAddr, srcRgba, n * 4 * sizeof(GLubyte));
- }
- else if (transferOps == 0 && dstFormat == GL_RGB
- && dstType == GL_UNSIGNED_BYTE) {
- /* common simple case */
- GLint i;
- GLubyte *dest = (GLubyte *) dstAddr;
- for (i = 0; i < n; i++) {
- dest[0] = srcRgba[i][RCOMP];
- dest[1] = srcRgba[i][GCOMP];
- dest[2] = srcRgba[i][BCOMP];
- dest += 3;
+ if (!source)
+ return;
+
+ width_in_bytes = CEILING( width, 8 );
+ src = source;
+ for (row = 0; row < height; row++) {
+ GLubyte *dst = _mesa_image_address( packing, dest, width, height,
+ GL_COLOR_INDEX, GL_BITMAP,
+ 0, row, 0 );
+ if (!dst)
+ return;
+
+ if (packing->SkipPixels == 0) {
+ MEMCPY( dst, src, width_in_bytes );
+ if (packing->LsbFirst) {
+ flip_bytes( dst, width_in_bytes );
+ }
}
- }
- else {
- /* general solution */
- GLfloat rgba[MAX_WIDTH][4];
- const GLfloat rscale = 1.0F / 255.0F;
- const GLfloat gscale = 1.0F / 255.0F;
- const GLfloat bscale = 1.0F / 255.0F;
- const GLfloat ascale = 1.0F / 255.0F;
- GLuint i;
- assert(n <= MAX_WIDTH);
- /* convert color components to floating point */
- for (i=0;i<n;i++) {
- rgba[i][RCOMP] = srcRgba[i][RCOMP] * rscale;
- rgba[i][GCOMP] = srcRgba[i][GCOMP] * gscale;
- rgba[i][BCOMP] = srcRgba[i][BCOMP] * bscale;
- rgba[i][ACOMP] = srcRgba[i][ACOMP] * ascale;
+ else {
+ /* handling SkipPixels is a bit tricky (no pun intended!) */
+ GLint i;
+ if (packing->LsbFirst) {
+ GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
+ }
+ if (srcMask == 128) {
+ srcMask = 1;
+ s++;
+ }
+ else {
+ srcMask = srcMask << 1;
+ }
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
+ }
+ else {
+ dstMask = dstMask >> 1;
+ }
+ }
+ }
+ else {
+ GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
+ GLubyte dstMask = 128;
+ const GLubyte *s = src;
+ GLubyte *d = dst;
+ *d = 0;
+ for (i = 0; i < width; i++) {
+ if (*s & srcMask) {
+ *d |= dstMask;
+ }
+ if (srcMask == 1) {
+ srcMask = 128;
+ s++;
+ }
+ else {
+ srcMask = srcMask >> 1;
+ }
+ if (dstMask == 1) {
+ dstMask = 128;
+ d++;
+ *d = 0;
+ }
+ else {
+ dstMask = dstMask >> 1;
+ }
+ }
+ }
}
- _mesa_pack_float_rgba_span(ctx, n, (const GLfloat (*)[4]) rgba,
- dstFormat, dstType, dstAddr,
- dstPacking, transferOps);
+ src += width_in_bytes;
}
}
+
void
_mesa_pack_float_rgba_span( GLcontext *ctx,
GLuint n, CONST GLfloat rgbaIn[][4],
@@ -1549,6 +1677,66 @@ _mesa_pack_float_rgba_span( GLcontext *ctx,
+/*
+ * Pack the given RGBA span into client memory at 'dest' address
+ * in the given pixel format and type.
+ * Optionally apply the enabled pixel transfer ops.
+ * Pack into memory using the given packing params struct.
+ * This is used by glReadPixels and glGetTexImage?D()
+ * Input: ctx - the context
+ * n - number of pixels in the span
+ * rgba - the pixels
+ * format - dest packing format
+ * type - dest packing datatype
+ * destination - destination packing address
+ * packing - pixel packing parameters
+ * transferOps - bitmask of IMAGE_*_BIT operations to apply
+ */
+void
+_mesa_pack_rgba_span( GLcontext *ctx,
+ GLuint n, CONST GLchan srcRgba[][4],
+ GLenum dstFormat, GLenum dstType,
+ GLvoid *dstAddr,
+ const struct gl_pixelstore_attrib *dstPacking,
+ GLuint transferOps)
+{
+ ASSERT(ctx->ImageTransferState != UPDATE_IMAGE_TRANSFER_STATE);
+
+ /* Test for optimized case first */
+ if (transferOps == 0 && dstFormat == GL_RGBA && dstType == CHAN_TYPE) {
+ /* common simple case */
+ MEMCPY(dstAddr, srcRgba, n * 4 * sizeof(GLchan));
+ }
+ else if (transferOps == 0 && dstFormat == GL_RGB && dstType == CHAN_TYPE) {
+ /* common simple case */
+ GLint i;
+ GLchan *dest = (GLchan *) dstAddr;
+ for (i = 0; i < n; i++) {
+ dest[0] = srcRgba[i][RCOMP];
+ dest[1] = srcRgba[i][GCOMP];
+ dest[2] = srcRgba[i][BCOMP];
+ dest += 3;
+ }
+ }
+ else {
+ /* general solution */
+ GLfloat rgba[MAX_WIDTH][4];
+ GLuint i;
+ assert(n <= MAX_WIDTH);
+ /* convert color components to floating point */
+ for (i=0;i<n;i++) {
+ rgba[i][RCOMP] = CHAN_TO_FLOAT(srcRgba[i][RCOMP]);
+ rgba[i][GCOMP] = CHAN_TO_FLOAT(srcRgba[i][GCOMP]);
+ rgba[i][BCOMP] = CHAN_TO_FLOAT(srcRgba[i][BCOMP]);
+ rgba[i][ACOMP] = CHAN_TO_FLOAT(srcRgba[i][ACOMP]);
+ }
+ _mesa_pack_float_rgba_span(ctx, n, (const GLfloat (*)[4]) rgba,
+ dstFormat, dstType, dstAddr,
+ dstPacking, transferOps);
+ }
+}
+
+
#define SWAP2BYTE(VALUE) \
{ \
GLubyte *bytes = (GLubyte *) &(VALUE); \
@@ -2251,12 +2439,12 @@ extract_float_rgba(GLuint n, GLfloat rgba[][4],
* XXX perhaps expand this to process whole images someday.
*/
void
-_mesa_unpack_ubyte_color_span( GLcontext *ctx,
- GLuint n, GLenum dstFormat, GLubyte dest[],
- GLenum srcFormat, GLenum srcType,
- const GLvoid *source,
- const struct gl_pixelstore_attrib *srcPacking,
- GLuint transferOps )
+_mesa_unpack_chan_color_span( GLcontext *ctx,
+ GLuint n, GLenum dstFormat, GLchan dest[],
+ GLenum srcFormat, GLenum srcType,
+ const GLvoid *source,
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLuint transferOps )
{
ASSERT(dstFormat == GL_ALPHA ||
dstFormat == GL_LUMINANCE ||
@@ -2305,21 +2493,21 @@ _mesa_unpack_ubyte_color_span( GLcontext *ctx,
assert(ctx->Visual.RGBAflag);
/* Try simple cases first */
- if (transferOps == 0 && srcType == GL_UNSIGNED_BYTE) {
+ if (transferOps == 0 && srcType == CHAN_TYPE) {
if (dstFormat == GL_RGBA) {
if (srcFormat == GL_RGBA) {
- MEMCPY( dest, source, n * 4 * sizeof(GLubyte) );
+ MEMCPY( dest, source, n * 4 * sizeof(GLchan) );
return;
}
else if (srcFormat == GL_RGB) {
GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLubyte *dst = dest;
+ const GLchan *src = (const GLchan *) source;
+ GLchan *dst = dest;
for (i = 0; i < n; i++) {
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
- dst[3] = 255;
+ dst[3] = CHAN_MAX;
src += 3;
dst += 4;
}
@@ -2328,13 +2516,13 @@ _mesa_unpack_ubyte_color_span( GLcontext *ctx,
}
else if (dstFormat == GL_RGB) {
if (srcFormat == GL_RGB) {
- MEMCPY( dest, source, n * 3 * sizeof(GLubyte) );
+ MEMCPY( dest, source, n * 3 * sizeof(GLchan) );
return;
}
else if (srcFormat == GL_RGBA) {
GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLubyte *dst = dest;
+ const GLchan *src = (const GLchan *) source;
+ GLchan *dst = dest;
for (i = 0; i < n; i++) {
dst[0] = src[0];
dst[1] = src[1];
@@ -2348,7 +2536,7 @@ _mesa_unpack_ubyte_color_span( GLcontext *ctx,
else if (dstFormat == srcFormat) {
GLint comps = _mesa_components_in_format(srcFormat);
assert(comps > 0);
- MEMCPY( dest, source, n * comps * sizeof(GLubyte) );
+ MEMCPY( dest, source, n * comps * sizeof(GLchan) );
return;
}
}
@@ -2383,10 +2571,10 @@ _mesa_unpack_ubyte_color_span( GLcontext *ctx,
}
if (dstFormat == GL_COLOR_INDEX) {
- /* convert to GLubyte and return */
+ /* convert to GLchan and return */
GLuint i;
for (i = 0; i < n; i++) {
- dest[i] = (GLubyte) (indexes[i] & 0xff);
+ dest[i] = (GLchan) (indexes[i] & 0xff);
}
return;
}
@@ -2490,67 +2678,67 @@ _mesa_unpack_ubyte_color_span( GLcontext *ctx,
dstLuminanceIndex = dstIntensityIndex = -1;
break;
default:
- gl_problem(ctx, "bad dstFormat in _mesa_unpack_ubyte_span()");
+ gl_problem(ctx, "bad dstFormat in _mesa_unpack_chan_span()");
return;
}
- /* Now return the GLubyte data in the requested dstFormat */
+ /* Now return the GLchan data in the requested dstFormat */
if (dstRedIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstRedIndex] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[dstRedIndex] = FLOAT_TO_CHAN(rgba[i][RCOMP]);
dst += dstComponents;
}
}
if (dstGreenIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstGreenIndex] = FLOAT_TO_UBYTE(rgba[i][GCOMP]);
+ dst[dstGreenIndex] = FLOAT_TO_CHAN(rgba[i][GCOMP]);
dst += dstComponents;
}
}
if (dstBlueIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstBlueIndex] = FLOAT_TO_UBYTE(rgba[i][BCOMP]);
+ dst[dstBlueIndex] = FLOAT_TO_CHAN(rgba[i][BCOMP]);
dst += dstComponents;
}
}
if (dstAlphaIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
for (i = 0; i < n; i++) {
- dst[dstAlphaIndex] = FLOAT_TO_UBYTE(rgba[i][ACOMP]);
+ dst[dstAlphaIndex] = FLOAT_TO_CHAN(rgba[i][ACOMP]);
dst += dstComponents;
}
}
if (dstIntensityIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
assert(dstIntensityIndex == 0);
assert(dstComponents == 1);
for (i = 0; i < n; i++) {
/* Intensity comes from red channel */
- dst[i] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[i] = FLOAT_TO_CHAN(rgba[i][RCOMP]);
}
}
if (dstLuminanceIndex >= 0) {
- GLubyte *dst = dest;
+ GLchan *dst = dest;
GLuint i;
assert(dstLuminanceIndex == 0);
for (i = 0; i < n; i++) {
/* Luminance comes from red channel */
- dst[0] = FLOAT_TO_UBYTE(rgba[i][RCOMP]);
+ dst[0] = FLOAT_TO_CHAN(rgba[i][RCOMP]);
dst += dstComponents;
}
}
@@ -2641,10 +2829,10 @@ _mesa_unpack_float_color_span( GLcontext *ctx,
}
if (dstFormat == GL_COLOR_INDEX) {
- /* convert to GLubyte and return */
+ /* convert to GLchan and return */
GLuint i;
for (i = 0; i < n; i++) {
- dest[i] = (GLubyte) (indexes[i] & 0xff);
+ dest[i] = (GLchan) (indexes[i] & 0xff);
}
return;
}
@@ -3186,197 +3374,3 @@ _mesa_unpack_image( GLsizei width, GLsizei height, GLsizei depth,
return destBuffer;
}
}
-
-
-/*
- * Unpack bitmap data. Resulting data will be in most-significant-bit-first
- * order with row alignment = 1 byte.
- */
-GLvoid *
-_mesa_unpack_bitmap( GLint width, GLint height, const GLubyte *pixels,
- const struct gl_pixelstore_attrib *packing )
-{
- GLint bytes, row, width_in_bytes;
- GLubyte *buffer, *dst;
-
- if (!pixels)
- return NULL;
-
- /* Alloc dest storage */
- bytes = ((width + 7) / 8 * height);
- buffer = (GLubyte *) MALLOC( bytes );
- if (!buffer)
- return NULL;
-
-
- width_in_bytes = CEILING( width, 8 );
- dst = buffer;
- for (row = 0; row < height; row++) {
- GLubyte *src = _mesa_image_address( packing, pixels, width, height,
- GL_COLOR_INDEX, GL_BITMAP,
- 0, row, 0 );
- if (!src) {
- FREE(buffer);
- return NULL;
- }
-
- if (packing->SkipPixels == 0) {
- MEMCPY( dst, src, width_in_bytes );
- if (packing->LsbFirst) {
- flip_bytes( dst, width_in_bytes );
- }
- }
- else {
- /* handling SkipPixels is a bit tricky (no pun intended!) */
- GLint i;
- if (packing->LsbFirst) {
- GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 128) {
- srcMask = 1;
- s++;
- }
- else {
- srcMask = srcMask << 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- else {
- GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 1) {
- srcMask = 128;
- s++;
- }
- else {
- srcMask = srcMask >> 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- }
- dst += width_in_bytes;
- }
-
- return buffer;
-}
-
-
-/*
- * Pack bitmap data.
- */
-void
-_mesa_pack_bitmap( GLint width, GLint height, const GLubyte *source,
- GLubyte *dest, const struct gl_pixelstore_attrib *packing )
-{
- GLint row, width_in_bytes;
- const GLubyte *src;
-
- if (!source)
- return;
-
- width_in_bytes = CEILING( width, 8 );
- src = source;
- for (row = 0; row < height; row++) {
- GLubyte *dst = _mesa_image_address( packing, dest, width, height,
- GL_COLOR_INDEX, GL_BITMAP,
- 0, row, 0 );
- if (!dst)
- return;
-
- if (packing->SkipPixels == 0) {
- MEMCPY( dst, src, width_in_bytes );
- if (packing->LsbFirst) {
- flip_bytes( dst, width_in_bytes );
- }
- }
- else {
- /* handling SkipPixels is a bit tricky (no pun intended!) */
- GLint i;
- if (packing->LsbFirst) {
- GLubyte srcMask = 1 << (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- const GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 128) {
- srcMask = 1;
- s++;
- }
- else {
- srcMask = srcMask << 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- else {
- GLubyte srcMask = 128 >> (packing->SkipPixels & 0x7);
- GLubyte dstMask = 128;
- const GLubyte *s = src;
- GLubyte *d = dst;
- *d = 0;
- for (i = 0; i < width; i++) {
- if (*s & srcMask) {
- *d |= dstMask;
- }
- if (srcMask == 1) {
- srcMask = 128;
- s++;
- }
- else {
- srcMask = srcMask >> 1;
- }
- if (dstMask == 1) {
- dstMask = 128;
- d++;
- *d = 0;
- }
- else {
- dstMask = dstMask >> 1;
- }
- }
- }
- }
- src += width_in_bytes;
- }
-}
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