#include "colormac.h"
#include "enums.h"
#include "image.h"
+#include "imports.h"
#include "pack.h"
#include "pixeltransfer.h"
#include "imports.h"
_mesa_problem(NULL, "bad srcType in extract float data");
break;
}
+#undef PROCESS
}
-/*
- * Unpack a row of color image data from a client buffer according to
- * the pixel unpacking parameters.
- * Return GLchan values in the specified dest image format.
- * This is used by glDrawPixels and glTexImage?D().
- * \param ctx - the context
- * n - number of pixels in the span
- * dstFormat - format of destination color array
- * dest - the destination color array
- * srcFormat - source image format
- * srcType - source image data type
- * source - source image pointer
- * srcPacking - pixel unpacking parameters
- * transferOps - bitmask of IMAGE_*_BIT values of operations to apply
- *
- * XXX perhaps expand this to process whole images someday.
+static INLINE GLuint
+clamp_byte_to_uint(GLbyte b)
+{
+ return b < 0 ? 0 : b;
+}
+
+
+static INLINE GLuint
+clamp_short_to_uint(GLshort s)
+{
+ return s < 0 ? 0 : s;
+}
+
+
+static INLINE GLuint
+clamp_int_to_uint(GLint i)
+{
+ return i < 0 ? 0 : i;
+}
+
+
+static INLINE GLuint
+clamp_float_to_uint(GLfloat f)
+{
+ return f < 0.0F ? 0 : IROUND(f);
+}
+
+
+static INLINE GLuint
+clamp_half_to_uint(GLhalfARB h)
+{
+ GLfloat f = _mesa_half_to_float(h);
+ return f < 0.0F ? 0 : IROUND(f);
+}
+
+
+/**
+ * \sa extract_float_rgba()
*/
-void
-_mesa_unpack_color_span_chan( struct gl_context *ctx,
- GLuint n, GLenum dstFormat, GLchan dest[],
- GLenum srcFormat, GLenum srcType,
- const GLvoid *source,
- const struct gl_pixelstore_attrib *srcPacking,
- GLbitfield transferOps )
+static void
+extract_uint_rgba(GLuint n, GLuint rgba[][4],
+ GLenum srcFormat, GLenum srcType, const GLvoid *src,
+ GLboolean swapBytes)
{
- ASSERT(dstFormat == GL_ALPHA ||
- dstFormat == GL_LUMINANCE ||
- dstFormat == GL_LUMINANCE_ALPHA ||
- dstFormat == GL_INTENSITY ||
- dstFormat == GL_RED ||
- dstFormat == GL_RG ||
- dstFormat == GL_RGB ||
- dstFormat == GL_RGBA ||
- dstFormat == GL_COLOR_INDEX);
+ GLint redIndex, greenIndex, blueIndex, alphaIndex;
+ GLint stride;
+ GLint rComp, bComp, gComp, aComp;
+ GLboolean intFormat;
ASSERT(srcFormat == GL_RED ||
srcFormat == GL_GREEN ||
srcFormat == GL_RGBA ||
srcFormat == GL_BGRA ||
srcFormat == GL_ABGR_EXT ||
- srcFormat == GL_COLOR_INDEX);
+ srcFormat == GL_DU8DV8_ATI ||
+ srcFormat == GL_DUDV_ATI ||
+ srcFormat == GL_RED_INTEGER_EXT ||
+ srcFormat == GL_GREEN_INTEGER_EXT ||
+ srcFormat == GL_BLUE_INTEGER_EXT ||
+ srcFormat == GL_ALPHA_INTEGER_EXT ||
+ srcFormat == GL_RGB_INTEGER_EXT ||
+ srcFormat == GL_RGBA_INTEGER_EXT ||
+ srcFormat == GL_BGR_INTEGER_EXT ||
+ srcFormat == GL_BGRA_INTEGER_EXT ||
+ srcFormat == GL_LUMINANCE_INTEGER_EXT ||
+ srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
- ASSERT(srcType == GL_BITMAP ||
- srcType == GL_UNSIGNED_BYTE ||
+ ASSERT(srcType == GL_UNSIGNED_BYTE ||
srcType == GL_BYTE ||
srcType == GL_UNSIGNED_SHORT ||
srcType == GL_SHORT ||
srcType == GL_UNSIGNED_INT_10_10_10_2 ||
srcType == GL_UNSIGNED_INT_2_10_10_10_REV);
- /* Try simple cases first */
- if (transferOps == 0) {
- if (srcType == CHAN_TYPE) {
- if (dstFormat == GL_RGBA) {
- if (srcFormat == GL_RGBA) {
- memcpy( dest, source, n * 4 * sizeof(GLchan) );
- return;
- }
- else if (srcFormat == GL_RGB) {
- GLuint i;
- 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] = CHAN_MAX;
- src += 3;
- dst += 4;
- }
- return;
- }
- }
- else if (dstFormat == GL_RGB) {
- if (srcFormat == GL_RGB) {
- memcpy( dest, source, n * 3 * sizeof(GLchan) );
- return;
- }
- else if (srcFormat == GL_RGBA) {
- GLuint i;
- 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];
- src += 4;
- dst += 3;
- }
- return;
- }
- }
- else if (dstFormat == srcFormat) {
- GLint comps = _mesa_components_in_format(srcFormat);
- assert(comps > 0);
- memcpy( dest, source, n * comps * sizeof(GLchan) );
- return;
- }
- }
- /*
- * Common situation, loading 8bit RGBA/RGB source images
- * into 16/32 bit destination. (OSMesa16/32)
- */
- else if (srcType == GL_UNSIGNED_BYTE) {
- if (dstFormat == GL_RGBA) {
- if (srcFormat == GL_RGB) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLchan *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = UBYTE_TO_CHAN(src[0]);
- dst[1] = UBYTE_TO_CHAN(src[1]);
- dst[2] = UBYTE_TO_CHAN(src[2]);
- dst[3] = CHAN_MAX;
- src += 3;
- dst += 4;
- }
- return;
- }
- else if (srcFormat == GL_RGBA) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLchan *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = UBYTE_TO_CHAN(src[0]);
- dst[1] = UBYTE_TO_CHAN(src[1]);
- dst[2] = UBYTE_TO_CHAN(src[2]);
- dst[3] = UBYTE_TO_CHAN(src[3]);
- src += 4;
- dst += 4;
- }
- return;
- }
- }
- else if (dstFormat == GL_RGB) {
- if (srcFormat == GL_RGB) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLchan *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = UBYTE_TO_CHAN(src[0]);
- dst[1] = UBYTE_TO_CHAN(src[1]);
- dst[2] = UBYTE_TO_CHAN(src[2]);
- src += 3;
- dst += 3;
- }
- return;
- }
- else if (srcFormat == GL_RGBA) {
- GLuint i;
- const GLubyte *src = (const GLubyte *) source;
- GLchan *dst = dest;
- for (i = 0; i < n; i++) {
- dst[0] = UBYTE_TO_CHAN(src[0]);
- dst[1] = UBYTE_TO_CHAN(src[1]);
- dst[2] = UBYTE_TO_CHAN(src[2]);
- src += 4;
- dst += 3;
- }
- return;
- }
- }
- }
- }
-
-
- /* general solution begins here */
- {
- GLint dstComponents;
- GLint dstRedIndex, dstGreenIndex, dstBlueIndex, dstAlphaIndex;
- GLint dstLuminanceIndex, dstIntensityIndex;
- GLfloat rgba[MAX_WIDTH][4];
-
- dstComponents = _mesa_components_in_format( dstFormat );
- /* source & dest image formats should have been error checked by now */
- assert(dstComponents > 0);
-
- /*
- * Extract image data and convert to RGBA floats
- */
- assert(n <= MAX_WIDTH);
- if (srcFormat == GL_COLOR_INDEX) {
- GLuint indexes[MAX_WIDTH];
- extract_uint_indexes(n, indexes, srcFormat, srcType, source,
- srcPacking);
-
- if (dstFormat == GL_COLOR_INDEX) {
- GLuint i;
- _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
- /* convert to GLchan and return */
- for (i = 0; i < n; i++) {
- dest[i] = (GLchan) (indexes[i] & 0xff);
- }
- return;
- }
- else {
- /* Convert indexes to RGBA */
- if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
- _mesa_shift_and_offset_ci(ctx, n, indexes);
- }
- _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
- }
-
- /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
- * with color indexes.
- */
- transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
- }
- else {
- /* non-color index data */
- extract_float_rgba(n, rgba, srcFormat, srcType, source,
- srcPacking->SwapBytes);
- }
-
- /* Need to clamp if returning GLubytes or GLushorts */
-#if CHAN_TYPE != GL_FLOAT
- transferOps |= IMAGE_CLAMP_BIT;
-#endif
-
- if (transferOps) {
- _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
- }
+ rComp = gComp = bComp = aComp = -1;
- /* Now determine which color channels we need to produce.
- * And determine the dest index (offset) within each color tuple.
- */
- switch (dstFormat) {
- case GL_ALPHA:
- dstAlphaIndex = 0;
- dstRedIndex = dstGreenIndex = dstBlueIndex = -1;
- dstLuminanceIndex = dstIntensityIndex = -1;
+ switch (srcFormat) {
+ case GL_RED:
+ case GL_RED_INTEGER_EXT:
+ redIndex = 0;
+ greenIndex = blueIndex = alphaIndex = -1;
+ stride = 1;
+ break;
+ case GL_GREEN:
+ case GL_GREEN_INTEGER_EXT:
+ greenIndex = 0;
+ redIndex = blueIndex = alphaIndex = -1;
+ stride = 1;
+ break;
+ case GL_BLUE:
+ case GL_BLUE_INTEGER_EXT:
+ blueIndex = 0;
+ redIndex = greenIndex = alphaIndex = -1;
+ stride = 1;
+ break;
+ case GL_ALPHA:
+ case GL_ALPHA_INTEGER_EXT:
+ redIndex = greenIndex = blueIndex = -1;
+ alphaIndex = 0;
+ stride = 1;
+ break;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_INTEGER_EXT:
+ redIndex = greenIndex = blueIndex = 0;
+ alphaIndex = -1;
+ stride = 1;
+ break;
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+ redIndex = greenIndex = blueIndex = 0;
+ alphaIndex = 1;
+ stride = 2;
+ break;
+ case GL_INTENSITY:
+ redIndex = greenIndex = blueIndex = alphaIndex = 0;
+ stride = 1;
+ break;
+ case GL_RG:
+ case GL_RG_INTEGER:
+ redIndex = 0;
+ greenIndex = 1;
+ blueIndex = -1;
+ alphaIndex = -1;
+ rComp = 0;
+ gComp = 1;
+ bComp = 2;
+ aComp = 3;
+ stride = 2;
+ break;
+ case GL_RGB:
+ case GL_RGB_INTEGER:
+ redIndex = 0;
+ greenIndex = 1;
+ blueIndex = 2;
+ alphaIndex = -1;
+ rComp = 0;
+ gComp = 1;
+ bComp = 2;
+ aComp = 3;
+ stride = 3;
+ break;
+ case GL_BGR:
+ redIndex = 2;
+ greenIndex = 1;
+ blueIndex = 0;
+ alphaIndex = -1;
+ rComp = 2;
+ gComp = 1;
+ bComp = 0;
+ aComp = 3;
+ stride = 3;
+ break;
+ case GL_RGBA:
+ case GL_RGBA_INTEGER:
+ redIndex = 0;
+ greenIndex = 1;
+ blueIndex = 2;
+ alphaIndex = 3;
+ rComp = 0;
+ gComp = 1;
+ bComp = 2;
+ aComp = 3;
+ stride = 4;
+ break;
+ case GL_BGRA:
+ redIndex = 2;
+ greenIndex = 1;
+ blueIndex = 0;
+ alphaIndex = 3;
+ rComp = 2;
+ gComp = 1;
+ bComp = 0;
+ aComp = 3;
+ stride = 4;
+ break;
+ case GL_ABGR_EXT:
+ redIndex = 3;
+ greenIndex = 2;
+ blueIndex = 1;
+ alphaIndex = 0;
+ rComp = 3;
+ gComp = 2;
+ bComp = 1;
+ aComp = 0;
+ stride = 4;
+ break;
+ default:
+ _mesa_problem(NULL, "bad srcFormat %s in extract float data",
+ _mesa_lookup_enum_by_nr(srcFormat));
+ return;
+ }
+
+ intFormat = _mesa_is_integer_format(srcFormat);
+
+#define PROCESS(INDEX, CHANNEL, DEFAULT, TYPE, CONVERSION) \
+ if ((INDEX) < 0) { \
+ GLuint i; \
+ for (i = 0; i < n; i++) { \
+ rgba[i][CHANNEL] = DEFAULT; \
+ } \
+ } \
+ else if (swapBytes) { \
+ const TYPE *s = (const TYPE *) src; \
+ GLuint i; \
+ for (i = 0; i < n; i++) { \
+ TYPE value = s[INDEX]; \
+ if (sizeof(TYPE) == 2) { \
+ SWAP2BYTE(value); \
+ } \
+ else if (sizeof(TYPE) == 4) { \
+ SWAP4BYTE(value); \
+ } \
+ rgba[i][CHANNEL] = CONVERSION(value); \
+ s += stride; \
+ } \
+ } \
+ else { \
+ const TYPE *s = (const TYPE *) src; \
+ GLuint i; \
+ for (i = 0; i < n; i++) { \
+ rgba[i][CHANNEL] = CONVERSION(s[INDEX]); \
+ s += stride; \
+ } \
+ }
+
+ switch (srcType) {
+ case GL_UNSIGNED_BYTE:
+ PROCESS(redIndex, RCOMP, 0, GLubyte, (GLuint));
+ PROCESS(greenIndex, GCOMP, 0, GLubyte, (GLuint));
+ PROCESS(blueIndex, BCOMP, 0, GLubyte, (GLuint));
+ PROCESS(alphaIndex, ACOMP, 1, GLubyte, (GLuint));
+ break;
+ case GL_BYTE:
+ PROCESS(redIndex, RCOMP, 0, GLbyte, clamp_byte_to_uint);
+ PROCESS(greenIndex, GCOMP, 0, GLbyte, clamp_byte_to_uint);
+ PROCESS(blueIndex, BCOMP, 0, GLbyte, clamp_byte_to_uint);
+ PROCESS(alphaIndex, ACOMP, 1, GLbyte, clamp_byte_to_uint);
+ break;
+ case GL_UNSIGNED_SHORT:
+ PROCESS(redIndex, RCOMP, 0, GLushort, (GLuint));
+ PROCESS(greenIndex, GCOMP, 0, GLushort, (GLuint));
+ PROCESS(blueIndex, BCOMP, 0, GLushort, (GLuint));
+ PROCESS(alphaIndex, ACOMP, 1, GLushort, (GLuint));
+ break;
+ case GL_SHORT:
+ PROCESS(redIndex, RCOMP, 0, GLshort, clamp_short_to_uint);
+ PROCESS(greenIndex, GCOMP, 0, GLshort, clamp_short_to_uint);
+ PROCESS(blueIndex, BCOMP, 0, GLshort, clamp_short_to_uint);
+ PROCESS(alphaIndex, ACOMP, 1, GLshort, clamp_short_to_uint);
+ break;
+ case GL_UNSIGNED_INT:
+ PROCESS(redIndex, RCOMP, 0, GLuint, (GLuint));
+ PROCESS(greenIndex, GCOMP, 0, GLuint, (GLuint));
+ PROCESS(blueIndex, BCOMP, 0, GLuint, (GLuint));
+ PROCESS(alphaIndex, ACOMP, 1, GLuint, (GLuint));
+ break;
+ case GL_INT:
+ PROCESS(redIndex, RCOMP, 0, GLint, clamp_int_to_uint);
+ PROCESS(greenIndex, GCOMP, 0, GLint, clamp_int_to_uint);
+ PROCESS(blueIndex, BCOMP, 0, GLint, clamp_int_to_uint);
+ PROCESS(alphaIndex, ACOMP, 1, GLint, clamp_int_to_uint);
+ break;
+ case GL_FLOAT:
+ PROCESS(redIndex, RCOMP, 0, GLfloat, clamp_float_to_uint);
+ PROCESS(greenIndex, GCOMP, 0, GLfloat, clamp_float_to_uint);
+ PROCESS(blueIndex, BCOMP, 0, GLfloat, clamp_float_to_uint);
+ PROCESS(alphaIndex, ACOMP, 1, GLfloat, clamp_float_to_uint);
+ break;
+ case GL_HALF_FLOAT_ARB:
+ PROCESS(redIndex, RCOMP, 0, GLhalfARB, clamp_half_to_uint);
+ PROCESS(greenIndex, GCOMP, 0, GLhalfARB, clamp_half_to_uint);
+ PROCESS(blueIndex, BCOMP, 0, GLhalfARB, clamp_half_to_uint);
+ PROCESS(alphaIndex, ACOMP, 1, GLhalfARB, clamp_half_to_uint);
+ break;
+ case GL_UNSIGNED_BYTE_3_3_2:
+ {
+ const GLubyte *ubsrc = (const GLubyte *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLubyte p = ubsrc[i];
+ rgba[i][rComp] = ((p >> 5) );
+ rgba[i][gComp] = ((p >> 2) & 0x7);
+ rgba[i][bComp] = ((p ) & 0x3);
+ rgba[i][aComp] = 1;
+ }
+ }
+ break;
+ case GL_UNSIGNED_BYTE_2_3_3_REV:
+ {
+ const GLubyte *ubsrc = (const GLubyte *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLubyte p = ubsrc[i];
+ rgba[i][rComp] = ((p ) & 0x7);
+ rgba[i][gComp] = ((p >> 3) & 0x7);
+ rgba[i][bComp] = ((p >> 6) );
+ rgba[i][aComp] = 1;
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p >> 11) );
+ rgba[i][gComp] = ((p >> 5) & 0x3f);
+ rgba[i][bComp] = ((p ) & 0x1f);
+ rgba[i][aComp] = 1;
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p >> 11) );
+ rgba[i][gComp] = ((p >> 5) & 0x3f);
+ rgba[i][bComp] = ((p ) & 0x1f);
+ rgba[i][aComp] = 1;
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_6_5_REV:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p ) & 0x1f);
+ rgba[i][gComp] = ((p >> 5) & 0x3f);
+ rgba[i][bComp] = ((p >> 11) );
+ rgba[i][aComp] = 1;
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p ) & 0x1f);
+ rgba[i][gComp] = ((p >> 5) & 0x3f);
+ rgba[i][bComp] = ((p >> 11) );
+ rgba[i][aComp] = 1;
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p >> 12) );
+ rgba[i][gComp] = ((p >> 8) & 0xf);
+ rgba[i][bComp] = ((p >> 4) & 0xf);
+ rgba[i][aComp] = ((p ) & 0xf);
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p >> 12) );
+ rgba[i][gComp] = ((p >> 8) & 0xf);
+ rgba[i][bComp] = ((p >> 4) & 0xf);
+ rgba[i][aComp] = ((p ) & 0xf);
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p ) & 0xf);
+ rgba[i][gComp] = ((p >> 4) & 0xf);
+ rgba[i][bComp] = ((p >> 8) & 0xf);
+ rgba[i][aComp] = ((p >> 12) );
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p ) & 0xf);
+ rgba[i][gComp] = ((p >> 4) & 0xf);
+ rgba[i][bComp] = ((p >> 8) & 0xf);
+ rgba[i][aComp] = ((p >> 12) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p >> 11) );
+ rgba[i][gComp] = ((p >> 6) & 0x1f);
+ rgba[i][bComp] = ((p >> 1) & 0x1f);
+ rgba[i][aComp] = ((p ) & 0x1 );
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p >> 11) );
+ rgba[i][gComp] = ((p >> 6) & 0x1f);
+ rgba[i][bComp] = ((p >> 1) & 0x1f);
+ rgba[i][aComp] = ((p ) & 0x1 );
+ }
+ }
+ break;
+ case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+ if (swapBytes) {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ SWAP2BYTE(p);
+ rgba[i][rComp] = ((p ) & 0x1f);
+ rgba[i][gComp] = ((p >> 5) & 0x1f);
+ rgba[i][bComp] = ((p >> 10) & 0x1f);
+ rgba[i][aComp] = ((p >> 15) );
+ }
+ }
+ else {
+ const GLushort *ussrc = (const GLushort *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLushort p = ussrc[i];
+ rgba[i][rComp] = ((p ) & 0x1f);
+ rgba[i][gComp] = ((p >> 5) & 0x1f);
+ rgba[i][bComp] = ((p >> 10) & 0x1f);
+ rgba[i][aComp] = ((p >> 15) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ if (swapBytes) {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p ) & 0xff);
+ rgba[i][gComp] = ((p >> 8) & 0xff);
+ rgba[i][bComp] = ((p >> 16) & 0xff);
+ rgba[i][aComp] = ((p >> 24) );
+ }
+ }
+ else {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p >> 24) );
+ rgba[i][gComp] = ((p >> 16) & 0xff);
+ rgba[i][bComp] = ((p >> 8) & 0xff);
+ rgba[i][aComp] = ((p ) & 0xff);
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ if (swapBytes) {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p >> 24) );
+ rgba[i][gComp] = ((p >> 16) & 0xff);
+ rgba[i][bComp] = ((p >> 8) & 0xff);
+ rgba[i][aComp] = ((p ) & 0xff);
+ }
+ }
+ else {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p ) & 0xff);
+ rgba[i][gComp] = ((p >> 8) & 0xff);
+ rgba[i][bComp] = ((p >> 16) & 0xff);
+ rgba[i][aComp] = ((p >> 24) );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_10_10_10_2:
+ if (swapBytes) {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ SWAP4BYTE(p);
+ rgba[i][rComp] = ((p >> 22) );
+ rgba[i][gComp] = ((p >> 12) & 0x3ff);
+ rgba[i][bComp] = ((p >> 2) & 0x3ff);
+ rgba[i][aComp] = ((p ) & 0x3 );
+ }
+ }
+ else {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p >> 22) );
+ rgba[i][gComp] = ((p >> 12) & 0x3ff);
+ rgba[i][bComp] = ((p >> 2) & 0x3ff);
+ rgba[i][aComp] = ((p ) & 0x3 );
+ }
+ }
+ break;
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ if (swapBytes) {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ SWAP4BYTE(p);
+ rgba[i][rComp] = ((p ) & 0x3ff);
+ rgba[i][gComp] = ((p >> 10) & 0x3ff);
+ rgba[i][bComp] = ((p >> 20) & 0x3ff);
+ rgba[i][aComp] = ((p >> 30) );
+ }
+ }
+ else {
+ const GLuint *uisrc = (const GLuint *) src;
+ GLuint i;
+ for (i = 0; i < n; i ++) {
+ GLuint p = uisrc[i];
+ rgba[i][rComp] = ((p ) & 0x3ff);
+ rgba[i][gComp] = ((p >> 10) & 0x3ff);
+ rgba[i][bComp] = ((p >> 20) & 0x3ff);
+ rgba[i][aComp] = ((p >> 30) );
+ }
+ }
+ break;
+ default:
+ _mesa_problem(NULL, "bad srcType in extract uint data");
+ break;
+ }
+#undef PROCESS
+}
+
+
+
+/*
+ * Unpack a row of color image data from a client buffer according to
+ * the pixel unpacking parameters.
+ * Return GLchan values in the specified dest image format.
+ * This is used by glDrawPixels and glTexImage?D().
+ * \param ctx - the context
+ * n - number of pixels in the span
+ * dstFormat - format of destination color array
+ * dest - the destination color array
+ * srcFormat - source image format
+ * srcType - source image data type
+ * source - source image pointer
+ * srcPacking - pixel unpacking parameters
+ * transferOps - bitmask of IMAGE_*_BIT values of operations to apply
+ *
+ * XXX perhaps expand this to process whole images someday.
+ */
+void
+_mesa_unpack_color_span_chan( struct gl_context *ctx,
+ GLuint n, GLenum dstFormat, GLchan dest[],
+ GLenum srcFormat, GLenum srcType,
+ const GLvoid *source,
+ const struct gl_pixelstore_attrib *srcPacking,
+ GLbitfield transferOps )
+{
+ ASSERT(dstFormat == GL_ALPHA ||
+ dstFormat == GL_LUMINANCE ||
+ dstFormat == GL_LUMINANCE_ALPHA ||
+ dstFormat == GL_INTENSITY ||
+ dstFormat == GL_RED ||
+ dstFormat == GL_RG ||
+ dstFormat == GL_RGB ||
+ dstFormat == GL_RGBA ||
+ dstFormat == GL_COLOR_INDEX);
+
+ ASSERT(srcFormat == GL_RED ||
+ srcFormat == GL_GREEN ||
+ srcFormat == GL_BLUE ||
+ srcFormat == GL_ALPHA ||
+ srcFormat == GL_LUMINANCE ||
+ srcFormat == GL_LUMINANCE_ALPHA ||
+ srcFormat == GL_INTENSITY ||
+ srcFormat == GL_RG ||
+ srcFormat == GL_RGB ||
+ srcFormat == GL_BGR ||
+ srcFormat == GL_RGBA ||
+ srcFormat == GL_BGRA ||
+ srcFormat == GL_ABGR_EXT ||
+ srcFormat == GL_COLOR_INDEX);
+
+ ASSERT(srcType == GL_BITMAP ||
+ srcType == GL_UNSIGNED_BYTE ||
+ srcType == GL_BYTE ||
+ srcType == GL_UNSIGNED_SHORT ||
+ srcType == GL_SHORT ||
+ srcType == GL_UNSIGNED_INT ||
+ srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
+ srcType == GL_FLOAT ||
+ srcType == GL_UNSIGNED_BYTE_3_3_2 ||
+ srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
+ srcType == GL_UNSIGNED_SHORT_5_6_5 ||
+ srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
+ srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
+ srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
+ srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
+ srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8 ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
+ srcType == GL_UNSIGNED_INT_10_10_10_2 ||
+ srcType == GL_UNSIGNED_INT_2_10_10_10_REV);
+
+ /* Try simple cases first */
+ if (transferOps == 0) {
+ if (srcType == CHAN_TYPE) {
+ if (dstFormat == GL_RGBA) {
+ if (srcFormat == GL_RGBA) {
+ memcpy( dest, source, n * 4 * sizeof(GLchan) );
+ return;
+ }
+ else if (srcFormat == GL_RGB) {
+ GLuint i;
+ 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] = CHAN_MAX;
+ src += 3;
+ dst += 4;
+ }
+ return;
+ }
+ }
+ else if (dstFormat == GL_RGB) {
+ if (srcFormat == GL_RGB) {
+ memcpy( dest, source, n * 3 * sizeof(GLchan) );
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ 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];
+ src += 4;
+ dst += 3;
+ }
+ return;
+ }
+ }
+ else if (dstFormat == srcFormat) {
+ GLint comps = _mesa_components_in_format(srcFormat);
+ assert(comps > 0);
+ memcpy( dest, source, n * comps * sizeof(GLchan) );
+ return;
+ }
+ }
+ /*
+ * Common situation, loading 8bit RGBA/RGB source images
+ * into 16/32 bit destination. (OSMesa16/32)
+ */
+ else if (srcType == GL_UNSIGNED_BYTE) {
+ if (dstFormat == GL_RGBA) {
+ if (srcFormat == GL_RGB) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ dst[3] = CHAN_MAX;
+ src += 3;
+ dst += 4;
+ }
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ dst[3] = UBYTE_TO_CHAN(src[3]);
+ src += 4;
+ dst += 4;
+ }
+ return;
+ }
+ }
+ else if (dstFormat == GL_RGB) {
+ if (srcFormat == GL_RGB) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ src += 3;
+ dst += 3;
+ }
+ return;
+ }
+ else if (srcFormat == GL_RGBA) {
+ GLuint i;
+ const GLubyte *src = (const GLubyte *) source;
+ GLchan *dst = dest;
+ for (i = 0; i < n; i++) {
+ dst[0] = UBYTE_TO_CHAN(src[0]);
+ dst[1] = UBYTE_TO_CHAN(src[1]);
+ dst[2] = UBYTE_TO_CHAN(src[2]);
+ src += 4;
+ dst += 3;
+ }
+ return;
+ }
+ }
+ }
+ }
+
+
+ /* general solution begins here */
+ {
+ GLint dstComponents;
+ GLint dstRedIndex, dstGreenIndex, dstBlueIndex, dstAlphaIndex;
+ GLint dstLuminanceIndex, dstIntensityIndex;
+ GLfloat rgba[MAX_WIDTH][4];
+
+ dstComponents = _mesa_components_in_format( dstFormat );
+ /* source & dest image formats should have been error checked by now */
+ assert(dstComponents > 0);
+
+ /*
+ * Extract image data and convert to RGBA floats
+ */
+ assert(n <= MAX_WIDTH);
+ if (srcFormat == GL_COLOR_INDEX) {
+ GLuint indexes[MAX_WIDTH];
+ extract_uint_indexes(n, indexes, srcFormat, srcType, source,
+ srcPacking);
+
+ if (dstFormat == GL_COLOR_INDEX) {
+ GLuint i;
+ _mesa_apply_ci_transfer_ops(ctx, transferOps, n, indexes);
+ /* convert to GLchan and return */
+ for (i = 0; i < n; i++) {
+ dest[i] = (GLchan) (indexes[i] & 0xff);
+ }
+ return;
+ }
+ else {
+ /* Convert indexes to RGBA */
+ if (transferOps & IMAGE_SHIFT_OFFSET_BIT) {
+ _mesa_shift_and_offset_ci(ctx, n, indexes);
+ }
+ _mesa_map_ci_to_rgba(ctx, n, indexes, rgba);
+ }
+
+ /* Don't do RGBA scale/bias or RGBA->RGBA mapping if starting
+ * with color indexes.
+ */
+ transferOps &= ~(IMAGE_SCALE_BIAS_BIT | IMAGE_MAP_COLOR_BIT);
+ }
+ else {
+ /* non-color index data */
+ extract_float_rgba(n, rgba, srcFormat, srcType, source,
+ srcPacking->SwapBytes);
+ }
+
+ /* Need to clamp if returning GLubytes or GLushorts */
+#if CHAN_TYPE != GL_FLOAT
+ transferOps |= IMAGE_CLAMP_BIT;
+#endif
+
+ if (transferOps) {
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, n, rgba);
+ }
+
+ /* Now determine which color channels we need to produce.
+ * And determine the dest index (offset) within each color tuple.
+ */
+ switch (dstFormat) {
+ case GL_ALPHA:
+ dstAlphaIndex = 0;
+ dstRedIndex = dstGreenIndex = dstBlueIndex = -1;
+ dstLuminanceIndex = dstIntensityIndex = -1;
break;
case GL_LUMINANCE:
dstLuminanceIndex = 0;
}
}
+
+
+
+
+/**
+ * Same as _mesa_unpack_color_span_chan(), but return GLuint data
+ * instead of GLchan.
+ * No pixel transfer ops are applied.
+ */
+void
+_mesa_unpack_color_span_uint(struct gl_context *ctx,
+ GLuint n, GLenum dstFormat, GLuint *dest,
+ GLenum srcFormat, GLenum srcType,
+ const GLvoid *source,
+ const struct gl_pixelstore_attrib *srcPacking)
+{
+ GLuint rgba[MAX_WIDTH][4];
+
+ ASSERT(n <= MAX_WIDTH);
+
+ ASSERT(dstFormat == GL_ALPHA ||
+ dstFormat == GL_LUMINANCE ||
+ dstFormat == GL_LUMINANCE_ALPHA ||
+ dstFormat == GL_INTENSITY ||
+ dstFormat == GL_RED ||
+ dstFormat == GL_RG ||
+ dstFormat == GL_RGB ||
+ dstFormat == GL_RGBA);
+
+ ASSERT(srcFormat == GL_RED ||
+ srcFormat == GL_GREEN ||
+ srcFormat == GL_BLUE ||
+ srcFormat == GL_ALPHA ||
+ srcFormat == GL_LUMINANCE ||
+ srcFormat == GL_LUMINANCE_ALPHA ||
+ srcFormat == GL_INTENSITY ||
+ srcFormat == GL_RG ||
+ srcFormat == GL_RGB ||
+ srcFormat == GL_BGR ||
+ srcFormat == GL_RGBA ||
+ srcFormat == GL_BGRA ||
+ srcFormat == GL_ABGR_EXT ||
+ srcFormat == GL_RED_INTEGER_EXT ||
+ srcFormat == GL_GREEN_INTEGER_EXT ||
+ srcFormat == GL_BLUE_INTEGER_EXT ||
+ srcFormat == GL_ALPHA_INTEGER_EXT ||
+ srcFormat == GL_RGB_INTEGER_EXT ||
+ srcFormat == GL_RGBA_INTEGER_EXT ||
+ srcFormat == GL_BGR_INTEGER_EXT ||
+ srcFormat == GL_BGRA_INTEGER_EXT ||
+ srcFormat == GL_LUMINANCE_INTEGER_EXT ||
+ srcFormat == GL_LUMINANCE_ALPHA_INTEGER_EXT);
+
+ ASSERT(srcType == GL_UNSIGNED_BYTE ||
+ srcType == GL_BYTE ||
+ srcType == GL_UNSIGNED_SHORT ||
+ srcType == GL_SHORT ||
+ srcType == GL_UNSIGNED_INT ||
+ srcType == GL_INT ||
+ srcType == GL_HALF_FLOAT_ARB ||
+ srcType == GL_FLOAT ||
+ srcType == GL_UNSIGNED_BYTE_3_3_2 ||
+ srcType == GL_UNSIGNED_BYTE_2_3_3_REV ||
+ srcType == GL_UNSIGNED_SHORT_5_6_5 ||
+ srcType == GL_UNSIGNED_SHORT_5_6_5_REV ||
+ srcType == GL_UNSIGNED_SHORT_4_4_4_4 ||
+ srcType == GL_UNSIGNED_SHORT_4_4_4_4_REV ||
+ srcType == GL_UNSIGNED_SHORT_5_5_5_1 ||
+ srcType == GL_UNSIGNED_SHORT_1_5_5_5_REV ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8 ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8_REV ||
+ srcType == GL_UNSIGNED_INT_10_10_10_2 ||
+ srcType == GL_UNSIGNED_INT_2_10_10_10_REV);
+
+
+ /* Extract image data as uint[4] pixels */
+ extract_uint_rgba(n, rgba, srcFormat, srcType, source,
+ srcPacking->SwapBytes);
+
+ if (dstFormat == GL_RGBA) {
+ /* simple case */
+ memcpy(dest, rgba, 4 * sizeof(GLuint) * n);
+ }
+ else {
+ /* general case */
+ GLint dstRedIndex = -1;
+ GLint dstGreenIndex = -1;
+ GLint dstBlueIndex = -1;
+ GLint dstAlphaIndex = -1;
+ GLint dstLuminanceIndex = -1;
+ GLint dstIntensityIndex = -1;
+ GLint dstComponents = _mesa_components_in_format( dstFormat );
+
+ assert(dstComponents > 0);
+
+ /* Now determine which color channels we need to produce.
+ * And determine the dest index (offset) within each color tuple.
+ */
+ switch (dstFormat) {
+ case GL_ALPHA:
+ dstAlphaIndex = 0;
+ break;
+ case GL_LUMINANCE:
+ dstLuminanceIndex = 0;
+ break;
+ case GL_LUMINANCE_ALPHA:
+ dstLuminanceIndex = 0;
+ dstAlphaIndex = 1;
+ break;
+ case GL_INTENSITY:
+ dstIntensityIndex = 0;
+ break;
+ case GL_RED:
+ dstRedIndex = 0;
+ break;
+ case GL_RG:
+ dstRedIndex = 0;
+ dstGreenIndex = 1;
+ break;
+ case GL_RGB:
+ dstRedIndex = 0;
+ dstGreenIndex = 1;
+ dstBlueIndex = 2;
+ break;
+ case GL_RGBA:
+ dstRedIndex = 0;
+ dstGreenIndex = 1;
+ dstBlueIndex = 2;
+ dstAlphaIndex = 3;
+ break;
+ default:
+ _mesa_problem(ctx,
+ "bad dstFormat in _mesa_unpack_color_span_uint()");
+ return;
+ }
+
+ /* Now pack values in the requested dest format */
+ if (dstRedIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[dstRedIndex] = rgba[i][RCOMP];
+ dst += dstComponents;
+ }
+ }
+
+ if (dstGreenIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[dstGreenIndex] = rgba[i][GCOMP];
+ dst += dstComponents;
+ }
+ }
+
+ if (dstBlueIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[dstBlueIndex] = rgba[i][BCOMP];
+ dst += dstComponents;
+ }
+ }
+
+ if (dstAlphaIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ dst[dstAlphaIndex] = rgba[i][ACOMP];
+ dst += dstComponents;
+ }
+ }
+
+ if (dstIntensityIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ assert(dstIntensityIndex == 0);
+ assert(dstComponents == 1);
+ for (i = 0; i < n; i++) {
+ /* Intensity comes from red channel */
+ dst[i] = rgba[i][RCOMP];
+ }
+ }
+
+ if (dstLuminanceIndex >= 0) {
+ GLuint *dst = dest;
+ GLuint i;
+ assert(dstLuminanceIndex == 0);
+ for (i = 0; i < n; i++) {
+ /* Luminance comes from red channel */
+ dst[0] = rgba[i][RCOMP];
+ dst += dstComponents;
+ }
+ }
+ }
+}
+
+
+
/**
* Similar to _mesa_unpack_color_span_float(), but for dudv data instead of rgba,
* directly return GLbyte data, no transfer ops apply.
projects / mesa.git / commitdiff