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-rw-r--r--dist/Mesa/src/mesa/main/texstore.c1771
1 files changed, 509 insertions, 1262 deletions
diff --git a/dist/Mesa/src/mesa/main/texstore.c b/dist/Mesa/src/mesa/main/texstore.c
index 7471934b4..2ac458b45 100644
--- a/dist/Mesa/src/mesa/main/texstore.c
+++ b/dist/Mesa/src/mesa/main/texstore.c
@@ -27,7 +27,7 @@
* Brian Paul
*/
-/*
+/**
* The GL texture image functions in teximage.c basically just do
* error checking and data structure allocation. They in turn call
* device driver functions which actually copy/convert/store the user's
@@ -58,16 +58,27 @@
#include "convolve.h"
#include "image.h"
#include "macros.h"
+#include "mipmap.h"
#include "imports.h"
#include "texcompress.h"
#include "texformat.h"
#include "teximage.h"
#include "texstore.h"
+#include "enums.h"
-static const GLint ZERO = 4, ONE = 5;
+enum {
+ ZERO = 4,
+ ONE = 5
+};
-static GLboolean can_swizzle(GLenum logicalBaseFormat)
+
+/**
+ * Return GL_TRUE if the given image format is one that be converted
+ * to another format by swizzling.
+ */
+static GLboolean
+can_swizzle(GLenum logicalBaseFormat)
{
switch (logicalBaseFormat) {
case GL_RGBA:
@@ -76,6 +87,12 @@ static GLboolean can_swizzle(GLenum logicalBaseFormat)
case GL_INTENSITY:
case GL_ALPHA:
case GL_LUMINANCE:
+ case GL_RED:
+ case GL_GREEN:
+ case GL_BLUE:
+ case GL_BGR:
+ case GL_BGRA:
+ case GL_ABGR_EXT:
return GL_TRUE;
default:
return GL_FALSE;
@@ -83,89 +100,172 @@ static GLboolean can_swizzle(GLenum logicalBaseFormat)
}
+
+enum {
+ IDX_LUMINANCE = 0,
+ IDX_ALPHA,
+ IDX_INTENSITY,
+ IDX_LUMINANCE_ALPHA,
+ IDX_RGB,
+ IDX_RGBA,
+ IDX_RED,
+ IDX_GREEN,
+ IDX_BLUE,
+ IDX_BGR,
+ IDX_BGRA,
+ IDX_ABGR,
+ MAX_IDX
+};
+
+#define MAP1(x) MAP4(x, ZERO, ZERO, ZERO)
+#define MAP2(x,y) MAP4(x, y, ZERO, ZERO)
+#define MAP3(x,y,z) MAP4(x, y, z, ZERO)
+#define MAP4(x,y,z,w) { x, y, z, w, ZERO, ONE }
+
+
+static const struct {
+ GLubyte format_idx;
+ GLubyte to_rgba[6];
+ GLubyte from_rgba[6];
+} mappings[MAX_IDX] =
+{
+ {
+ IDX_LUMINANCE,
+ MAP4(0,0,0,ONE),
+ MAP1(0)
+ },
+
+ {
+ IDX_ALPHA,
+ MAP4(ZERO, ZERO, ZERO, 0),
+ MAP1(3)
+ },
+
+ {
+ IDX_INTENSITY,
+ MAP4(0, 0, 0, 0),
+ MAP1(0),
+ },
+
+ {
+ IDX_LUMINANCE_ALPHA,
+ MAP4(0,0,0,1),
+ MAP2(0,3)
+ },
+
+ {
+ IDX_RGB,
+ MAP4(0,1,2,ONE),
+ MAP3(0,1,2)
+ },
+
+ {
+ IDX_RGBA,
+ MAP4(0,1,2,3),
+ MAP4(0,1,2,3),
+ },
+
+
+ {
+ IDX_RED,
+ MAP4(0, ZERO, ZERO, ONE),
+ MAP1(0),
+ },
+
+ {
+ IDX_GREEN,
+ MAP4(ZERO, 0, ZERO, ONE),
+ MAP1(1),
+ },
+
+ {
+ IDX_BLUE,
+ MAP4(ZERO, ZERO, 0, ONE),
+ MAP1(2),
+ },
+
+ {
+ IDX_BGR,
+ MAP4(2,1,0,ONE),
+ MAP3(2,1,0)
+ },
+
+ {
+ IDX_BGRA,
+ MAP4(2,1,0,3),
+ MAP4(2,1,0,3)
+ },
+
+ {
+ IDX_ABGR,
+ MAP4(3,2,1,0),
+ MAP4(3,2,1,0)
+ },
+};
+
+
+
+/**
+ * Convert a GL image format enum to an IDX_* value (see above).
+ */
+static int
+get_map_idx(GLenum value)
+{
+ switch (value) {
+ case GL_LUMINANCE: return IDX_LUMINANCE;
+ case GL_ALPHA: return IDX_ALPHA;
+ case GL_INTENSITY: return IDX_INTENSITY;
+ case GL_LUMINANCE_ALPHA: return IDX_LUMINANCE_ALPHA;
+ case GL_RGB: return IDX_RGB;
+ case GL_RGBA: return IDX_RGBA;
+ case GL_RED: return IDX_RED;
+ case GL_GREEN: return IDX_GREEN;
+ case GL_BLUE: return IDX_BLUE;
+ case GL_BGR: return IDX_BGR;
+ case GL_BGRA: return IDX_BGRA;
+ case GL_ABGR_EXT: return IDX_ABGR;
+ default:
+ _mesa_problem(NULL, "Unexpected inFormat");
+ return 0;
+ }
+}
+
+
/**
* When promoting texture formats (see below) we need to compute the
* mapping of dest components back to source components.
* This function does that.
- * \param logicalBaseFormat the logical format of the texture
- * \param textureBaseFormat the final texture format
- * \return map[4] the four mapping values
+ * \param inFormat the incoming format of the texture
+ * \param outFormat the final texture format
+ * \return map[6] a full 6-component map
*/
static void
-compute_component_mapping(GLenum logicalBaseFormat, GLenum textureBaseFormat,
- GLubyte map[6])
+compute_component_mapping(GLenum inFormat, GLenum outFormat,
+ GLubyte *map)
{
+ const int inFmt = get_map_idx(inFormat);
+ const int outFmt = get_map_idx(outFormat);
+ const GLubyte *in2rgba = mappings[inFmt].to_rgba;
+ const GLubyte *rgba2out = mappings[outFmt].from_rgba;
+ int i;
+
+ for (i = 0; i < 4; i++)
+ map[i] = in2rgba[rgba2out[i]];
+
map[ZERO] = ZERO;
- map[ONE] = ONE;
+ map[ONE] = ONE;
- /* compute mapping from dest components back to src components */
- switch (textureBaseFormat) {
- case GL_RGB:
- case GL_RGBA:
- switch (logicalBaseFormat) {
- case GL_LUMINANCE:
- map[0] = map[1] = map[2] = 0;
- if (textureBaseFormat == GL_RGBA)
- map[3] = ONE;
- break;
- case GL_ALPHA:
- ASSERT(textureBaseFormat == GL_RGBA);
- map[0] = map[1] = map[2] = ZERO;
- map[3] = 0;
- break;
- case GL_INTENSITY:
- map[0] = map[1] = map[2] = 0;
- if (textureBaseFormat == GL_RGBA)
- map[3] = 0;
- break;
- case GL_LUMINANCE_ALPHA:
- ASSERT(textureBaseFormat == GL_RGBA);
- map[0] = map[1] = map[2] = 0;
- map[3] = 1;
- break;
- case GL_RGB:
- ASSERT(textureBaseFormat == GL_RGBA);
- map[0] = 0;
- map[1] = 1;
- map[2] = 2;
- map[3] = ONE;
- break;
- case GL_RGBA:
- ASSERT(textureBaseFormat == GL_RGBA);
- map[0] = 0;
- map[1] = 1;
- map[2] = 2;
- map[3] = 3;
- break;
- default:
- _mesa_problem(NULL, "Unexpected logicalBaseFormat");
- map[0] = map[1] = map[2] = map[3] = 0;
- }
- break;
- case GL_LUMINANCE_ALPHA:
- switch (logicalBaseFormat) {
- case GL_LUMINANCE:
- map[0] = 0;
- map[1] = ONE;
- break;
- case GL_ALPHA:
- map[0] = ZERO;
- map[1] = 0;
- break;
- case GL_INTENSITY:
- map[0] = 0;
- map[1] = 0;
- break;
- default:
- _mesa_problem(NULL, "Unexpected logicalBaseFormat");
- map[0] = map[1] = 0;
- }
- break;
- default:
- _mesa_problem(NULL, "Unexpected textureBaseFormat");
- map[0] = map[1] = 0;
- break;
- }
+/*
+ _mesa_printf("from %x/%s to %x/%s map %d %d %d %d %d %d\n",
+ inFormat, _mesa_lookup_enum_by_nr(inFormat),
+ outFormat, _mesa_lookup_enum_by_nr(outFormat),
+ map[0],
+ map[1],
+ map[2],
+ map[3],
+ map[4],
+ map[5]);
+*/
}
@@ -298,7 +398,7 @@ make_temp_float_image(GLcontext *ctx, GLuint dims,
GLfloat *dst = tempImage + img * (convWidth * convHeight * 4);
for (row = 0; row < convHeight; row++) {
_mesa_pack_rgba_span_float(ctx, convWidth,
- (const GLfloat (*)[4]) src,
+ (GLfloat (*)[4]) src,
logicalBaseFormat, GL_FLOAT,
dst, &ctx->DefaultPacking,
postConvTransferOps);
@@ -552,14 +652,16 @@ _mesa_make_temp_chan_image(GLcontext *ctx, GLuint dims,
* \param dstComponents number of color components in destination pixels
* \param src source pixels
* \param srcComponents number of color components in source pixels
- * \param map the swizzle mapping
+ * \param map the swizzle mapping. map[X] says where to find the X component
+ * in the source image's pixels. For example, if the source image
+ * is GL_BGRA and X = red, map[0] yields 2.
* \param count number of pixels to copy/swizzle.
*/
static void
swizzle_copy(GLubyte *dst, GLuint dstComponents, const GLubyte *src,
GLuint srcComponents, const GLubyte *map, GLuint count)
{
- GLubyte tmp[8];
+ GLubyte tmp[6];
GLuint i;
tmp[ZERO] = 0x0;
@@ -596,10 +698,61 @@ swizzle_copy(GLubyte *dst, GLuint dstComponents, const GLubyte *src,
dst += 2;
}
break;
+ case 1:
+ /* XXX investigate valgrind invalid read when running demos/texenv.c */
+ for (i = 0; i < count; i++) {
+ COPY_4UBV(tmp, src);
+ src += srcComponents;
+ dst[0] = tmp[map[0]];
+ dst += 1;
+ }
+ break;
}
}
+static const GLubyte map_identity[6] = { 0, 1, 2, 3, ZERO, ONE };
+static const GLubyte map_3210[6] = { 3, 2, 1, 0, ZERO, ONE };
+
+/* Deal with the _REV input types:
+ */
+static const GLubyte *
+type_mapping( GLenum srcType )
+{
+ switch (srcType) {
+ case GL_UNSIGNED_BYTE:
+ return map_identity;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ return _mesa_little_endian() ? map_3210 : map_identity;
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ return _mesa_little_endian() ? map_identity : map_3210;
+ default:
+ return NULL;
+ }
+}
+
+/* Mapping required if input type is
+ */
+static const GLubyte *
+byteswap_mapping( GLboolean swapBytes,
+ GLenum srcType )
+{
+ if (!swapBytes)
+ return map_identity;
+
+ switch (srcType) {
+ case GL_UNSIGNED_BYTE:
+ return map_identity;
+ case GL_UNSIGNED_INT_8_8_8_8:
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ return map_3210;
+ default:
+ return NULL;
+ }
+}
+
+
+
/**
* Transfer a GLubyte texture image with component swizzling.
*/
@@ -607,7 +760,12 @@ static void
_mesa_swizzle_ubyte_image(GLcontext *ctx,
GLuint dimensions,
GLenum srcFormat,
- const GLubyte *dstmap, GLint dstComponents,
+ GLenum srcType,
+
+ GLenum baseInternalFormat,
+
+ const GLubyte *rgba2dst,
+ GLuint dstComponents,
GLvoid *dstAddr,
GLint dstXoffset, GLint dstYoffset, GLint dstZoffset,
@@ -619,9 +777,9 @@ _mesa_swizzle_ubyte_image(GLcontext *ctx,
const struct gl_pixelstore_attrib *srcPacking )
{
GLint srcComponents = _mesa_components_in_format(srcFormat);
- GLubyte srcmap[6], map[4];
+ const GLubyte *srctype2ubyte, *swap;
+ GLubyte map[4], src2base[6], base2rgba[6];
GLint i;
-
const GLint srcRowStride =
_mesa_image_row_stride(srcPacking, srcWidth,
srcFormat, GL_UNSIGNED_BYTE);
@@ -635,12 +793,24 @@ _mesa_swizzle_ubyte_image(GLcontext *ctx,
(void) ctx;
- compute_component_mapping(srcFormat, GL_RGBA, srcmap);
+ /* Translate from src->baseInternal->GL_RGBA->dst. This will
+ * correctly deal with RGBA->RGB->RGBA conversions where the final
+ * A value must be 0xff regardless of the incoming alpha values.
+ */
+ compute_component_mapping(srcFormat, baseInternalFormat, src2base);
+ compute_component_mapping(baseInternalFormat, GL_RGBA, base2rgba);
+ swap = byteswap_mapping(srcPacking->SwapBytes, srcType);
+ srctype2ubyte = type_mapping(srcType);
+
for (i = 0; i < 4; i++)
- map[i] = srcmap[dstmap[i]];
+ map[i] = srctype2ubyte[swap[src2base[base2rgba[rgba2dst[i]]]]];
- if (srcRowStride == srcWidth * srcComponents &&
+/* _mesa_printf("map %d %d %d %d\n", map[0], map[1], map[2], map[3]); */
+
+ if (srcRowStride == dstRowStride &&
+ srcComponents == dstComponents &&
+ srcRowStride == srcWidth * srcComponents &&
dimensions < 3) {
/* 1 and 2D images only */
GLubyte *dstImage = (GLubyte *) dstAddr
@@ -817,6 +987,58 @@ _mesa_texstore_rgba(TEXSTORE_PARAMS)
}
}
}
+ else if (!ctx->_ImageTransferState &&
+ CHAN_TYPE == GL_UNSIGNED_BYTE &&
+ (srcType == GL_UNSIGNED_BYTE ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8 ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
+ can_swizzle(baseInternalFormat) &&
+ can_swizzle(srcFormat)) {
+
+ const GLubyte *dstmap;
+ GLuint components;
+
+ /* dstmap - how to swizzle from RGBA to dst format:
+ */
+ if (dstFormat == &_mesa_texformat_rgba) {
+ dstmap = mappings[IDX_RGBA].from_rgba;
+ components = 4;
+ }
+ else if (dstFormat == &_mesa_texformat_rgb) {
+ dstmap = mappings[IDX_RGB].from_rgba;
+ components = 3;
+ }
+ else if (dstFormat == &_mesa_texformat_alpha) {
+ dstmap = mappings[IDX_ALPHA].from_rgba;
+ components = 1;
+ }
+ else if (dstFormat == &_mesa_texformat_luminance) {
+ dstmap = mappings[IDX_LUMINANCE].from_rgba;
+ components = 1;
+ }
+ else if (dstFormat == &_mesa_texformat_luminance_alpha) {
+ dstmap = mappings[IDX_LUMINANCE_ALPHA].from_rgba;
+ components = 2;
+ }
+ else if (dstFormat == &_mesa_texformat_intensity) {
+ dstmap = mappings[IDX_INTENSITY].from_rgba;
+ components = 1;
+ }
+ else {
+ _mesa_problem(ctx, "Unexpected dstFormat in _mesa_texstore_rgba");
+ return GL_FALSE;
+ }
+
+ _mesa_swizzle_ubyte_image(ctx, dims,
+ srcFormat,
+ srcType,
+ baseInternalFormat,
+ dstmap, components,
+ dstAddr, dstXoffset, dstYoffset, dstZoffset,
+ dstRowStride, dstImageOffsets,
+ srcWidth, srcHeight, srcDepth, srcAddr,
+ srcPacking);
+ }
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1050,13 +1272,14 @@ _mesa_texstore_rgb565(TEXSTORE_PARAMS)
}
+/**
+ * Store a texture in MESA_FORMAT_RGBA8888 or MESA_FORMAT_RGBA8888_REV.
+ */
GLboolean
_mesa_texstore_rgba8888(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
- (void)littleEndian;
ASSERT(dstFormat == &_mesa_texformat_rgba8888 ||
dstFormat == &_mesa_texformat_rgba8888_rev);
ASSERT(dstFormat->TexelBytes == 4);
@@ -1093,40 +1316,41 @@ _mesa_texstore_rgba8888(TEXSTORE_PARAMS)
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
}
-#if 0
- /* broken? */
else if (!ctx->_ImageTransferState &&
- !srcPacking->SwapBytes &&
- srcType == GL_UNSIGNED_BYTE &&
- dstFormat == &_mesa_texformat_rgba8888 &&
- littleEndian &&
- /* Three texture formats involved: srcFormat,
- * baseInternalFormat and destFormat (GL_RGBA). Only two
- * may differ. _mesa_swizzle_ubyte_image can't handle two
- * propagations at once correctly. */
- (srcFormat == baseInternalFormat ||
- baseInternalFormat == GL_RGBA) &&
+ (srcType == GL_UNSIGNED_BYTE ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8 ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
+ can_swizzle(baseInternalFormat) &&
can_swizzle(srcFormat)) {
+
GLubyte dstmap[4];
- /* dstmap - how to swizzle from GL_RGBA to dst format:
- *
- * FIXME - add !litteEndian and _rev varients:
+ /* dstmap - how to swizzle from RGBA to dst format:
*/
- dstmap[3] = 0;
- dstmap[2] = 1;
- dstmap[1] = 2;
- dstmap[0] = 3;
+ if ((littleEndian && dstFormat == &_mesa_texformat_rgba8888) ||
+ (!littleEndian && dstFormat == &_mesa_texformat_rgba8888_rev)) {
+ dstmap[3] = 0;
+ dstmap[2] = 1;
+ dstmap[1] = 2;
+ dstmap[0] = 3;
+ }
+ else {
+ dstmap[3] = 3;
+ dstmap[2] = 2;
+ dstmap[1] = 1;
+ dstmap[0] = 0;
+ }
_mesa_swizzle_ubyte_image(ctx, dims,
srcFormat,
+ srcType,
+ baseInternalFormat,
dstmap, 4,
dstAddr, dstXoffset, dstYoffset, dstZoffset,
- dstRowStride, dstImageStride,
+ dstRowStride, dstImageOffsets,
srcWidth, srcHeight, srcDepth, srcAddr,
srcPacking);
}
-#endif
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1177,8 +1401,7 @@ _mesa_texstore_rgba8888(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_argb8888(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
ASSERT(dstFormat == &_mesa_texformat_argb8888 ||
dstFormat == &_mesa_texformat_argb8888_rev);
@@ -1218,6 +1441,8 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS)
!srcPacking->SwapBytes &&
dstFormat == &_mesa_texformat_argb8888 &&
srcFormat == GL_RGB &&
+ (baseInternalFormat == GL_RGBA ||
+ baseInternalFormat == GL_RGB) &&
srcType == GL_UNSIGNED_BYTE) {
int img, row, col;
@@ -1246,6 +1471,7 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS)
!srcPacking->SwapBytes &&
dstFormat == &_mesa_texformat_argb8888 &&
srcFormat == GL_RGBA &&
+ baseInternalFormat == GL_RGBA &&
(srcType == GL_UNSIGNED_BYTE && littleEndian)) {
GLint img, row, col;
/* For some reason, streaming copies to write-combined regions
@@ -1280,6 +1506,7 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS)
!srcPacking->SwapBytes &&
dstFormat == &_mesa_texformat_argb8888 &&
srcFormat == GL_RGBA &&
+ baseInternalFormat == GL_RGBA &&
srcType == GL_UNSIGNED_BYTE) {
GLint img, row, col;
@@ -1305,29 +1532,37 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS)
}
}
else if (!ctx->_ImageTransferState &&
- !srcPacking->SwapBytes &&
- dstFormat == &_mesa_texformat_argb8888 &&
- srcType == GL_UNSIGNED_BYTE &&
- littleEndian &&
- /* Three texture formats involved: srcFormat,
- * baseInternalFormat and destFormat (GL_RGBA). Only two
- * may differ. _mesa_swizzle_ubyte_image can't handle two
- * propagations at once correctly. */
- (srcFormat == baseInternalFormat ||
- baseInternalFormat == GL_RGBA) &&
+ (srcType == GL_UNSIGNED_BYTE ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8 ||
+ srcType == GL_UNSIGNED_INT_8_8_8_8_REV) &&
+ can_swizzle(baseInternalFormat) &&
can_swizzle(srcFormat)) {
GLubyte dstmap[4];
- /* dstmap - how to swizzle from GL_RGBA to dst format:
+ /* dstmap - how to swizzle from RGBA to dst format:
*/
- dstmap[3] = 3; /* alpha */
- dstmap[2] = 0; /* red */
- dstmap[1] = 1; /* green */
- dstmap[0] = 2; /* blue */
+ if ((littleEndian && dstFormat == &_mesa_texformat_argb8888) ||
+ (!littleEndian && dstFormat == &_mesa_texformat_argb8888_rev)) {
+ dstmap[3] = 3; /* alpha */
+ dstmap[2] = 0; /* red */
+ dstmap[1] = 1; /* green */
+ dstmap[0] = 2; /* blue */
+ }
+ else {
+ assert((littleEndian && dstFormat == &_mesa_texformat_argb8888_rev) ||
+ (!littleEndian && dstFormat == &_mesa_texformat_argb8888));
+ dstmap[3] = 2;
+ dstmap[2] = 1;
+ dstmap[1] = 0;
+ dstmap[0] = 3;
+ }
_mesa_swizzle_ubyte_image(ctx, dims,
srcFormat,
+ srcType,
+
+ baseInternalFormat,
dstmap, 4,
dstAddr, dstXoffset, dstYoffset, dstZoffset,
dstRowStride,
@@ -1385,8 +1620,7 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_rgb888(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
ASSERT(dstFormat == &_mesa_texformat_rgb888);
ASSERT(dstFormat->TexelBytes == 3);
@@ -1431,6 +1665,30 @@ _mesa_texstore_rgb888(TEXSTORE_PARAMS)
}
}
}
+ else if (!ctx->_ImageTransferState &&
+ srcType == GL_UNSIGNED_BYTE &&
+ can_swizzle(baseInternalFormat) &&
+ can_swizzle(srcFormat)) {
+
+ GLubyte dstmap[4];
+
+ /* dstmap - how to swizzle from RGBA to dst format:
+ */
+ dstmap[0] = 2;
+ dstmap[1] = 1;
+ dstmap[2] = 0;
+ dstmap[3] = ONE; /* ? */
+
+ _mesa_swizzle_ubyte_image(ctx, dims,
+ srcFormat,
+ srcType,
+ baseInternalFormat,
+ dstmap, 3,
+ dstAddr, dstXoffset, dstYoffset, dstZoffset,
+ dstRowStride, dstImageOffsets,
+ srcWidth, srcHeight, srcDepth, srcAddr,
+ srcPacking);
+ }
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1487,8 +1745,7 @@ _mesa_texstore_rgb888(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_bgr888(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
ASSERT(dstFormat == &_mesa_texformat_bgr888);
ASSERT(dstFormat->TexelBytes == 3);
@@ -1533,6 +1790,30 @@ _mesa_texstore_bgr888(TEXSTORE_PARAMS)
}
}
}
+ else if (!ctx->_ImageTransferState &&
+ srcType == GL_UNSIGNED_BYTE &&
+ can_swizzle(baseInternalFormat) &&
+ can_swizzle(srcFormat)) {
+
+ GLubyte dstmap[4];
+
+ /* dstmap - how to swizzle from RGBA to dst format:
+ */
+ dstmap[0] = 0;
+ dstmap[1] = 1;
+ dstmap[2] = 2;
+ dstmap[3] = ONE; /* ? */
+
+ _mesa_swizzle_ubyte_image(ctx, dims,
+ srcFormat,
+ srcType,
+ baseInternalFormat,
+ dstmap, 3,
+ dstAddr, dstXoffset, dstYoffset, dstZoffset,
+ dstRowStride, dstImageOffsets,
+ srcWidth, srcHeight, srcDepth, srcAddr,
+ srcPacking);
+ }
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1707,8 +1988,7 @@ _mesa_texstore_argb1555(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_al88(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
ASSERT(dstFormat == &_mesa_texformat_al88 ||
dstFormat == &_mesa_texformat_al88_rev);
@@ -1729,6 +2009,38 @@ _mesa_texstore_al88(TEXSTORE_PARAMS)
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
}
+ else if (!ctx->_ImageTransferState &&
+ littleEndian &&
+ srcType == GL_UNSIGNED_BYTE &&
+ can_swizzle(baseInternalFormat) &&
+ can_swizzle(srcFormat)) {
+
+ GLubyte dstmap[4];
+
+ /* dstmap - how to swizzle from RGBA to dst format:
+ */
+ if ((littleEndian && dstFormat == &_mesa_texformat_al88) ||
+ (!littleEndian && dstFormat == &_mesa_texformat_al88_rev)) {
+ dstmap[0] = 0;
+ dstmap[1] = 3;
+ }
+ else {
+ dstmap[0] = 3;
+ dstmap[1] = 0;
+ }
+ dstmap[2] = ZERO; /* ? */
+ dstmap[3] = ONE; /* ? */
+
+ _mesa_swizzle_ubyte_image(ctx, dims,
+ srcFormat,
+ srcType,
+ baseInternalFormat,
+ dstmap, 2,
+ dstAddr, dstXoffset, dstYoffset, dstZoffset,
+ dstRowStride, dstImageOffsets,
+ srcWidth, srcHeight, srcDepth, srcAddr,
+ srcPacking);
+ }
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1849,6 +2161,35 @@ _mesa_texstore_a8(TEXSTORE_PARAMS)
srcWidth, srcHeight, srcDepth, srcFormat, srcType,
srcAddr, srcPacking);
}
+ else if (!ctx->_ImageTransferState &&
+ srcType == GL_UNSIGNED_BYTE &&
+ can_swizzle(baseInternalFormat) &&
+ can_swizzle(srcFormat)) {
+
+ GLubyte dstmap[4];
+
+ /* dstmap - how to swizzle from RGBA to dst format:
+ */
+ if (dstFormat == &_mesa_texformat_a8) {
+ dstmap[0] = 3;
+ }
+ else {
+ dstmap[0] = 0;
+ }
+ dstmap[1] = ZERO; /* ? */
+ dstmap[2] = ZERO; /* ? */
+ dstmap[3] = ONE; /* ? */
+
+ _mesa_swizzle_ubyte_image(ctx, dims,
+ srcFormat,
+ srcType,
+ baseInternalFormat,
+ dstmap, 1,
+ dstAddr, dstXoffset, dstYoffset, dstZoffset,
+ dstRowStride, dstImageOffsets,
+ srcWidth, srcHeight, srcDepth, srcAddr,
+ srcPacking);
+ }
else {
/* general path */
const GLchan *tempImage = _mesa_make_temp_chan_image(ctx, dims,
@@ -1930,8 +2271,7 @@ _mesa_texstore_ci8(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_ycbcr(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
(void) ctx; (void) dims; (void) baseInternalFormat;
ASSERT((dstFormat == &_mesa_texformat_ycbcr) ||
@@ -2186,8 +2526,7 @@ _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_srgb8(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
const struct gl_texture_format *newDstFormat;
StoreTexImageFunc store;
GLboolean k;
@@ -2218,8 +2557,7 @@ _mesa_texstore_srgb8(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_srgba8(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
const struct gl_texture_format *newDstFormat;
GLboolean k;
@@ -2267,8 +2605,7 @@ _mesa_texstore_sl8(TEXSTORE_PARAMS)
GLboolean
_mesa_texstore_sla8(TEXSTORE_PARAMS)
{
- const GLuint ui = 1;
- const GLubyte littleEndian = *((const GLubyte *) &ui);
+ const GLboolean littleEndian = _mesa_little_endian();
const struct gl_texture_format *newDstFormat;
GLboolean k;
@@ -2386,8 +2723,8 @@ _mesa_unmap_teximage_pbo(GLcontext *ctx,
* Adaptor for fetching a GLchan texel from a float-valued texture.
*/
static void
-FetchTexelFloatToChan( const struct gl_texture_image *texImage,
- GLint i, GLint j, GLint k, GLchan *texelOut )
+fetch_texel_float_to_chan(const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLchan *texelOut)
{
GLfloat temp[4];
ASSERT(texImage->FetchTexelf);
@@ -2411,8 +2748,8 @@ FetchTexelFloatToChan( const struct gl_texture_image *texImage,
* Adaptor for fetching a float texel from a GLchan-valued texture.
*/
static void
-FetchTexelChanToFloat( const struct gl_texture_image *texImage,
- GLint i, GLint j, GLint k, GLfloat *texelOut )
+fetch_texel_chan_to_float(const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texelOut)
{
GLchan temp[4];
ASSERT(texImage->FetchTexelc);
@@ -2435,8 +2772,8 @@ FetchTexelChanToFloat( const struct gl_texture_image *texImage,
/**
* Initialize the texture image's FetchTexelc and FetchTexelf methods.
*/
-static void
-set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
+void
+_mesa_set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
{
ASSERT(dims == 1 || dims == 2 || dims == 3);
ASSERT(texImage->TexFormat);
@@ -2460,10 +2797,10 @@ set_fetch_functions(struct gl_texture_image *texImage, GLuint dims)
/* now check if we need to use a float/chan adaptor */
if (!texImage->FetchTexelc) {
- texImage->FetchTexelc = FetchTexelFloatToChan;
+ texImage->FetchTexelc = fetch_texel_float_to_chan;
}
else if (!texImage->FetchTexelf) {
- texImage->FetchTexelf = FetchTexelChanToFloat;
+ texImage->FetchTexelf = fetch_texel_chan_to_float;
}
@@ -2496,7 +2833,7 @@ choose_texture_format(GLcontext *ctx, struct gl_texture_image *texImage,
ASSERT(texImage->TexFormat);
- set_fetch_functions(texImage, dims);
+ _mesa_set_fetch_functions(texImage, dims);
if (texImage->TexFormat->TexelBytes == 0) {
/* must be a compressed format */
@@ -3119,1114 +3456,6 @@ _mesa_store_compressed_texsubimage3d(GLcontext *ctx, GLenum target,
}
-/*
- * Average together two rows of a source image to produce a single new
- * row in the dest image. It's legal for the two source rows to point
- * to the same data. The source width must be equal to either the
- * dest width or two times the dest width.
- */
-static void
-do_row(const struct gl_texture_format *format, GLint srcWidth,
- const GLvoid *srcRowA, const GLvoid *srcRowB,
- GLint dstWidth, GLvoid *dstRow)
-{
- const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1;
- const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2;
-
- /* This assertion is no longer valid with non-power-of-2 textures
- assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth);
- */
-
- switch (format->MesaFormat) {
- case MESA_FORMAT_RGBA:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[4] = (const GLchan (*)[4]) srcRowA;
- const GLchan (*rowB)[4] = (const GLchan (*)[4]) srcRowB;
- GLchan (*dst)[4] = (GLchan (*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) / 4;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) / 4;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) / 4;
- dst[i][3] = (rowA[j][3] + rowA[k][3] +
- rowB[j][3] + rowB[k][3]) / 4;
- }
- }
- return;
- case MESA_FORMAT_RGB:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[3] = (const GLchan (*)[3]) srcRowA;
- const GLchan (*rowB)[3] = (const GLchan (*)[3]) srcRowB;
- GLchan (*dst)[3] = (GLchan (*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) / 4;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) / 4;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) / 4;
- }
- }
- return;
- case MESA_FORMAT_ALPHA:
- case MESA_FORMAT_LUMINANCE:
- case MESA_FORMAT_INTENSITY:
- {
- GLuint i, j, k;
- const GLchan *rowA = (const GLchan *) srcRowA;
- const GLchan *rowB = (const GLchan *) srcRowB;
- GLchan *dst = (GLchan *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4;
- }
- }
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA:
- {
- GLuint i, j, k;
- const GLchan (*rowA)[2] = (const GLchan (*)[2]) srcRowA;
- const GLchan (*rowB)[2] = (const GLchan (*)[2]) srcRowB;
- GLchan (*dst)[2] = (GLchan (*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) / 4;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) / 4;
- }
- }
- return;
- case MESA_FORMAT_Z32:
- {
- GLuint i, j, k;
- const GLuint *rowA = (const GLuint *) srcRowA;
- const GLuint *rowB = (const GLuint *) srcRowB;
- GLfloat *dst = (GLfloat *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4;
- }
- }
- return;
- case MESA_FORMAT_Z16:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4;
- }
- }
- return;
- /* Begin hardware formats */
- case MESA_FORMAT_RGBA8888:
- case MESA_FORMAT_RGBA8888_REV:
- case MESA_FORMAT_ARGB8888:
- case MESA_FORMAT_ARGB8888_REV:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SRGBA8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[4] = (const GLubyte (*)[4]) srcRowA;
- const GLubyte (*rowB)[4] = (const GLubyte (*)[4]) srcRowB;
- GLubyte (*dst)[4] = (GLubyte (*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) / 4;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) / 4;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) / 4;
- dst[i][3] = (rowA[j][3] + rowA[k][3] +
- rowB[j][3] + rowB[k][3]) / 4;
- }
- }
- return;
- case MESA_FORMAT_RGB888:
- case MESA_FORMAT_BGR888:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SRGB8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[3] = (const GLubyte (*)[3]) srcRowA;
- const GLubyte (*rowB)[3] = (const GLubyte (*)[3]) srcRowB;
- GLubyte (*dst)[3] = (GLubyte (*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) / 4;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) / 4;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) / 4;
- }
- }
- return;
- case MESA_FORMAT_RGB565:
- case MESA_FORMAT_RGB565_REV:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- const GLint rowAr0 = rowA[j] & 0x1f;
- const GLint rowAr1 = rowA[k] & 0x1f;
- const GLint rowBr0 = rowB[j] & 0x1f;
- const GLint rowBr1 = rowB[k] & 0x1f;
- const GLint rowAg0 = (rowA[j] >> 5) & 0x3f;
- const GLint rowAg1 = (rowA[k] >> 5) & 0x3f;
- const GLint rowBg0 = (rowB[j] >> 5) & 0x3f;
- const GLint rowBg1 = (rowB[k] >> 5) & 0x3f;
- const GLint rowAb0 = (rowA[j] >> 11) & 0x1f;
- const GLint rowAb1 = (rowA[k] >> 11) & 0x1f;
- const GLint rowBb0 = (rowB[j] >> 11) & 0x1f;
- const GLint rowBb1 = (rowB[k] >> 11) & 0x1f;
- const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- dst[i] = (blue << 11) | (green << 5) | red;
- }
- }
- return;
- case MESA_FORMAT_ARGB4444:
- case MESA_FORMAT_ARGB4444_REV:
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- const GLint rowAr0 = rowA[j] & 0xf;
- const GLint rowAr1 = rowA[k] & 0xf;
- const GLint rowBr0 = rowB[j] & 0xf;
- const GLint rowBr1 = rowB[k] & 0xf;
- const GLint rowAg0 = (rowA[j] >> 4) & 0xf;
- const GLint rowAg1 = (rowA[k] >> 4) & 0xf;
- const GLint rowBg0 = (rowB[j] >> 4) & 0xf;
- const GLint rowBg1 = (rowB[k] >> 4) & 0xf;
- const GLint rowAb0 = (rowA[j] >> 8) & 0xf;
- const GLint rowAb1 = (rowA[k] >> 8) & 0xf;
- const GLint rowBb0 = (rowB[j] >> 8) & 0xf;
- const GLint rowBb1 = (rowB[k] >> 8) & 0xf;
- const GLint rowAa0 = (rowA[j] >> 12) & 0xf;
- const GLint rowAa1 = (rowA[k] >> 12) & 0xf;
- const GLint rowBa0 = (rowB[j] >> 12) & 0xf;
- const GLint rowBa1 = (rowB[k] >> 12) & 0xf;
- const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
- dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red;
- }
- }
- return;
- case MESA_FORMAT_ARGB1555:
- case MESA_FORMAT_ARGB1555_REV: /* XXX broken? */
- {
- GLuint i, j, k;
- const GLushort *rowA = (const GLushort *) srcRowA;
- const GLushort *rowB = (const GLushort *) srcRowB;
- GLushort *dst = (GLushort *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- const GLint rowAr0 = rowA[j] & 0x1f;
- const GLint rowAr1 = rowA[k] & 0x1f;
- const GLint rowBr0 = rowB[j] & 0x1f;
- const GLint rowBr1 = rowB[k] & 0xf;
- const GLint rowAg0 = (rowA[j] >> 5) & 0x1f;
- const GLint rowAg1 = (rowA[k] >> 5) & 0x1f;
- const GLint rowBg0 = (rowB[j] >> 5) & 0x1f;
- const GLint rowBg1 = (rowB[k] >> 5) & 0x1f;
- const GLint rowAb0 = (rowA[j] >> 10) & 0x1f;
- const GLint rowAb1 = (rowA[k] >> 10) & 0x1f;
- const GLint rowBb0 = (rowB[j] >> 10) & 0x1f;
- const GLint rowBb1 = (rowB[k] >> 10) & 0x1f;
- const GLint rowAa0 = (rowA[j] >> 15) & 0x1;
- const GLint rowAa1 = (rowA[k] >> 15) & 0x1;
- const GLint rowBa0 = (rowB[j] >> 15) & 0x1;
- const GLint rowBa1 = (rowB[k] >> 15) & 0x1;
- const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
- dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red;
- }
- }
- return;
- case MESA_FORMAT_AL88:
- case MESA_FORMAT_AL88_REV:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SLA8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte (*rowA)[2] = (const GLubyte (*)[2]) srcRowA;
- const GLubyte (*rowB)[2] = (const GLubyte (*)[2]) srcRowB;
- GLubyte (*dst)[2] = (GLubyte (*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) >> 2;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) >> 2;
- }
- }
- return;
- case MESA_FORMAT_RGB332:
- {
- GLuint i, j, k;
- const GLubyte *rowA = (const GLubyte *) srcRowA;
- const GLubyte *rowB = (const GLubyte *) srcRowB;
- GLubyte *dst = (GLubyte *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- const GLint rowAr0 = rowA[j] & 0x3;
- const GLint rowAr1 = rowA[k] & 0x3;
- const GLint rowBr0 = rowB[j] & 0x3;
- const GLint rowBr1 = rowB[k] & 0x3;
- const GLint rowAg0 = (rowA[j] >> 2) & 0x7;
- const GLint rowAg1 = (rowA[k] >> 2) & 0x7;
- const GLint rowBg0 = (rowB[j] >> 2) & 0x7;
- const GLint rowBg1 = (rowB[k] >> 2) & 0x7;
- const GLint rowAb0 = (rowA[j] >> 5) & 0x7;
- const GLint rowAb1 = (rowA[k] >> 5) & 0x7;
- const GLint rowBb0 = (rowB[j] >> 5) & 0x7;
- const GLint rowBb1 = (rowB[k] >> 5) & 0x7;
- const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
- const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
- const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
- dst[i] = (blue << 5) | (green << 2) | red;
- }
- }
- return;
- case MESA_FORMAT_A8:
- case MESA_FORMAT_L8:
- case MESA_FORMAT_I8:
- case MESA_FORMAT_CI8:
-#if FEATURE_EXT_texture_sRGB
- case MESA_FORMAT_SL8:
-#endif
- {
- GLuint i, j, k;
- const GLubyte *rowA = (const GLubyte *) srcRowA;
- const GLubyte *rowB = (const GLubyte *) srcRowB;
- GLubyte *dst = (GLubyte *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2;
- }
- }
- return;
- case MESA_FORMAT_RGBA_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[4] = (const GLfloat (*)[4]) srcRowA;
- const GLfloat (*rowB)[4] = (const GLfloat (*)[4]) srcRowB;
- GLfloat (*dst)[4] = (GLfloat (*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) * 0.25F;
- dst[i][3] = (rowA[j][3] + rowA[k][3] +
- rowB[j][3] + rowB[k][3]) * 0.25F;
- }
- }
- return;
- case MESA_FORMAT_RGBA_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[4] = (const GLhalfARB (*)[4]) srcRowA;
- const GLhalfARB (*rowB)[4] = (const GLhalfARB (*)[4]) srcRowB;
- GLhalfARB (*dst)[4] = (GLhalfARB (*)[4]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 4; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- return;
- case MESA_FORMAT_RGB_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[3] = (const GLfloat (*)[3]) srcRowA;
- const GLfloat (*rowB)[3] = (const GLfloat (*)[3]) srcRowB;
- GLfloat (*dst)[3] = (GLfloat (*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- dst[i][2] = (rowA[j][2] + rowA[k][2] +
- rowB[j][2] + rowB[k][2]) * 0.25F;
- }
- }
- return;
- case MESA_FORMAT_RGB_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[3] = (const GLhalfARB (*)[3]) srcRowA;
- const GLhalfARB (*rowB)[3] = (const GLhalfARB (*)[3]) srcRowB;
- GLhalfARB (*dst)[3] = (GLhalfARB (*)[3]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 3; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat (*rowA)[2] = (const GLfloat (*)[2]) srcRowA;
- const GLfloat (*rowB)[2] = (const GLfloat (*)[2]) srcRowB;
- GLfloat (*dst)[2] = (GLfloat (*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i][0] = (rowA[j][0] + rowA[k][0] +
- rowB[j][0] + rowB[k][0]) * 0.25F;
- dst[i][1] = (rowA[j][1] + rowA[k][1] +
- rowB[j][1] + rowB[k][1]) * 0.25F;
- }
- }
- return;
- case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
- {
- GLuint i, j, k, comp;
- const GLhalfARB (*rowA)[2] = (const GLhalfARB (*)[2]) srcRowA;
- const GLhalfARB (*rowB)[2] = (const GLhalfARB (*)[2]) srcRowB;
- GLhalfARB (*dst)[2] = (GLhalfARB (*)[2]) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- for (comp = 0; comp < 2; comp++) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j][comp]);
- ak = _mesa_half_to_float(rowA[k][comp]);
- bj = _mesa_half_to_float(rowB[j][comp]);
- bk = _mesa_half_to_float(rowB[k][comp]);
- dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- }
- return;
- case MESA_FORMAT_ALPHA_FLOAT32:
- case MESA_FORMAT_LUMINANCE_FLOAT32:
- case MESA_FORMAT_INTENSITY_FLOAT32:
- {
- GLuint i, j, k;
- const GLfloat *rowA = (const GLfloat *) srcRowA;
- const GLfloat *rowB = (const GLfloat *) srcRowB;
- GLfloat *dst = (GLfloat *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F;
- }
- }
- return;
- case MESA_FORMAT_ALPHA_FLOAT16:
- case MESA_FORMAT_LUMINANCE_FLOAT16:
- case MESA_FORMAT_INTENSITY_FLOAT16:
- {
- GLuint i, j, k;
- const GLhalfARB *rowA = (const GLhalfARB *) srcRowA;
- const GLhalfARB *rowB = (const GLhalfARB *) srcRowB;
- GLhalfARB *dst = (GLhalfARB *) dstRow;
- for (i = j = 0, k = k0; i < (GLuint) dstWidth;
- i++, j += colStride, k += colStride) {
- GLfloat aj, ak, bj, bk;
- aj = _mesa_half_to_float(rowA[j]);
- ak = _mesa_half_to_float(rowA[k]);
- bj = _mesa_half_to_float(rowB[j]);
- bk = _mesa_half_to_float(rowB[k]);
- dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F);
- }
- }
- return;
-
- default:
- _mesa_problem(NULL, "bad format in do_row()");
- }
-}
-
-
-/*
- * These functions generate a 1/2-size mipmap image from a source image.
- * Texture borders are handled by copying or averaging the source image's
- * border texels, depending on the scale-down factor.
- */
-
-static void
-make_1d_mipmap(const struct gl_texture_format *format, GLint border,
- GLint srcWidth, const GLubyte *srcPtr,
- GLint dstWidth, GLubyte *dstPtr)
-{
- const GLint bpt = format->TexelBytes;
- const GLubyte *src;
- GLubyte *dst;
-
- /* skip the border pixel, if any */
- src = srcPtr + border * bpt;
- dst = dstPtr + border * bpt;
-
- /* we just duplicate the input row, kind of hack, saves code */
- do_row(format, srcWidth - 2 * border, src, src,
- dstWidth - 2 * border, dst);
-
- 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);
- }
-}
-
-
-/**
- * XXX need to use the tex image's row stride!
- */
-static void
-make_2d_mipmap(const struct gl_texture_format *format, GLint border,
- GLint srcWidth, GLint srcHeight, 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 *srcA, *srcB;
- GLubyte *dst;
- 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 (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);
- }
- }
- }
-}
-
-
-static void
-make_3d_mipmap(const struct gl_texture_format *format, GLint border,
- GLint srcWidth, GLint srcHeight, GLint srcDepth,
- 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 srcDepthNB = srcDepth - 2 * border;
- const GLint dstWidthNB = dstWidth - 2 * border;
- const GLint dstHeightNB = dstHeight - 2 * border;
- const GLint dstDepthNB = dstDepth - 2 * border;
- GLvoid *tmpRowA, *tmpRowB;
- GLint img, row;
- GLint bytesPerSrcImage, bytesPerDstImage;
- GLint bytesPerSrcRow, bytesPerDstRow;
- GLint srcImageOffset, srcRowOffset;
-
- (void) srcDepthNB; /* silence warnings */
-
- /* Need two temporary row buffers */
- tmpRowA = _mesa_malloc(srcWidth * bpt);
- if (!tmpRowA)
- return;
- tmpRowB = _mesa_malloc(srcWidth * bpt);
- if (!tmpRowB) {
- _mesa_free(tmpRowA);
- return;
- }
-
- bytesPerSrcImage = srcWidth * srcHeight * bpt;
- bytesPerDstImage = dstWidth * dstHeight * bpt;
-
- bytesPerSrcRow = srcWidth * bpt;
- bytesPerDstRow = dstWidth * bpt;
-
- /* Offset between adjacent src images to be averaged together */
- srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
-
- /* Offset between adjacent src rows to be averaged together */
- srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt;
-
- /*
- * Need to average together up to 8 src pixels for each dest pixel.
- * Break that down into 3 operations:
- * 1. take two rows from source image and average them together.
- * 2. take two rows from next source image and average them together.
- * 3. take the two averaged rows and average them for the final dst row.
- */
-
- /*
- _mesa_printf("mip3d %d x %d x %d -> %d x %d x %d\n",
- srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth);
- */
-
- for (img = 0; img < dstDepthNB; img++) {
- /* first source image pointer, skipping border */
- const GLubyte *imgSrcA = srcPtr
- + (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 + bytesPerDstRow + border) * bpt * border
- + img * bytesPerDstImage;
-
- /* setup the four source row pointers and the dest row pointer */
- const GLubyte *srcImgARowA = imgSrcA;
- const GLubyte *srcImgARowB = imgSrcA + srcRowOffset;
- const GLubyte *srcImgBRowA = imgSrcB;
- const GLubyte *srcImgBRowB = imgSrcB + srcRowOffset;
- GLubyte *dstImgRow = imgDst;
-
- for (row = 0; row < dstHeightNB; row++) {
- /* Average together two rows from first src image */
- do_row(format, srcWidthNB, srcImgARowA, srcImgARowB,
- srcWidthNB, tmpRowA);
- /* Average together two rows from second src image */
- do_row(format, srcWidthNB, srcImgBRowA, srcImgBRowB,
- srcWidthNB, tmpRowB);
- /* Average together the temp rows to make the final row */
- do_row(format, srcWidthNB, tmpRowA, tmpRowB,
- dstWidthNB, dstImgRow);
- /* advance to next rows */
- srcImgARowA += bytesPerSrcRow + srcRowOffset;
- srcImgARowB += bytesPerSrcRow + srcRowOffset;
- srcImgBRowA += bytesPerSrcRow + srcRowOffset;
- srcImgBRowB += bytesPerSrcRow + srcRowOffset;
- dstImgRow += bytesPerDstRow;
- }
- }
-
- _mesa_free(tmpRowA);
- _mesa_free(tmpRowB);
-
- /* Luckily we can leverage the make_2d_mipmap() function here! */
- if (border > 0) {
- /* do front border image */
- make_2d_mipmap(format, 1, srcWidth, srcHeight, srcPtr,
- dstWidth, dstHeight, dstPtr);
- /* do back border image */
- make_2d_mipmap(format, 1, srcWidth, srcHeight,
- srcPtr + bytesPerSrcImage * (srcDepth - 1),
- dstWidth, dstHeight,
- dstPtr + bytesPerDstImage * (dstDepth - 1));
- /* do four remaining border edges that span the image slices */
- if (srcDepth == dstDepth) {
- /* just copy border pixels from src to dst */
- for (img = 0; img < dstDepthNB; img++) {
- const GLubyte *src;
- GLubyte *dst;
-
- /* do border along [img][row=0][col=0] */
- src = srcPtr + (img + 1) * bytesPerSrcImage;
- dst = dstPtr + (img + 1) * bytesPerDstImage;
- 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;
- 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;
- 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);
- MEMCPY(dst, src, bpt);
- }
- }
- else {
- /* average border pixels from adjacent src image pairs */
- ASSERT(srcDepthNB == 2 * dstDepthNB);
- for (img = 0; img < dstDepthNB; img++) {
- const GLubyte *src;
- GLubyte *dst;
-
- /* do border along [img][row=0][col=0] */
- src = srcPtr + (img * 2 + 1) * bytesPerSrcImage;
- dst = dstPtr + (img + 1) * bytesPerDstImage;
- do_row(format, 1, src, src + srcImageOffset, 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(format, 1, src, src + srcImageOffset, 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(format, 1, src, src + srcImageOffset, 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(format, 1, src, src + srcImageOffset, 1, dst);
- }
- }
- }
-}
-
-
-/**
- * For GL_SGIX_generate_mipmap:
- * Generate a complete set of mipmaps from texObj's base-level image.
- * Stop at texObj's MaxLevel or when we get to the 1x1 texture.
- */
-void
-_mesa_generate_mipmap(GLcontext *ctx, GLenum target,
- const struct gl_texture_unit *texUnit,
- struct gl_texture_object *texObj)
-{
- const struct gl_texture_image *srcImage;
- const struct gl_texture_format *convertFormat;
- const GLubyte *srcData = NULL;
- GLubyte *dstData = NULL;
- GLint level, maxLevels;
-
- ASSERT(texObj);
- /* XXX choose cube map face here??? */
- srcImage = texObj->Image[0][texObj->BaseLevel];
- ASSERT(srcImage);
-
- maxLevels = _mesa_max_texture_levels(ctx, texObj->Target);
- ASSERT(maxLevels > 0); /* bad target */
-
- /* Find convertFormat - the format that do_row() will process */
- if (srcImage->IsCompressed) {
- /* setup for compressed textures */
- GLuint row;
- GLint components, size;
- GLchan *dst;
-
- assert(texObj->Target == GL_TEXTURE_2D);
-
- if (srcImage->_BaseFormat == GL_RGB) {
- convertFormat = &_mesa_texformat_rgb;
- components = 3;
- }
- else if (srcImage->_BaseFormat == GL_RGBA) {
- convertFormat = &_mesa_texformat_rgba;
- components = 4;
- }
- else {
- _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps");
- return;
- }
-
- /* allocate storage for uncompressed GL_RGB or GL_RGBA images */
- size = _mesa_bytes_per_pixel(srcImage->_BaseFormat, CHAN_TYPE)
- * srcImage->Width * srcImage->Height * srcImage->Depth + 20;
- /* 20 extra bytes, just be safe when calling last FetchTexel */
- srcData = (GLubyte *) _mesa_malloc(size);
- if (!srcData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- return;
- }
- dstData = (GLubyte *) _mesa_malloc(size / 2); /* 1/4 would probably be OK */
- if (!dstData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- _mesa_free((void *) srcData);
- return;
- }
-
- /* decompress base image here */
- dst = (GLchan *) srcData;
- for (row = 0; row < srcImage->Height; row++) {
- GLuint col;
- for (col = 0; col < srcImage->Width; col++) {
- srcImage->FetchTexelc(srcImage, col, row, 0, dst);
- dst += components;
- }
- }
- }
- else {
- /* uncompressed */
- convertFormat = srcImage->TexFormat;
- }
-
- for (level = texObj->BaseLevel; level < texObj->MaxLevel
- && level < maxLevels - 1; level++) {
- /* generate image[level+1] from image[level] */
- const struct gl_texture_image *srcImage;
- struct gl_texture_image *dstImage;
- GLint srcWidth, srcHeight, srcDepth;
- GLint dstWidth, dstHeight, dstDepth;
- GLint border, bytesPerTexel;
-
- /* get src image parameters */
- srcImage = _mesa_select_tex_image(ctx, texUnit, target, level);
- ASSERT(srcImage);
- srcWidth = srcImage->Width;
- srcHeight = srcImage->Height;
- srcDepth = srcImage->Depth;
- border = srcImage->Border;
-
- /* compute next (level+1) image size */
- if (srcWidth - 2 * border > 1) {
- dstWidth = (srcWidth - 2 * border) / 2 + 2 * border;
- }
- else {
- dstWidth = srcWidth; /* can't go smaller */
- }
- if (srcHeight - 2 * border > 1) {
- dstHeight = (srcHeight - 2 * border) / 2 + 2 * border;
- }
- else {
- dstHeight = srcHeight; /* can't go smaller */
- }
- if (srcDepth - 2 * border > 1) {
- dstDepth = (srcDepth - 2 * border) / 2 + 2 * border;
- }
- else {
- dstDepth = srcDepth; /* can't go smaller */
- }
-
- if (dstWidth == srcWidth &&
- dstHeight == srcHeight &&
- dstDepth == srcDepth) {
- /* all done */
- if (srcImage->IsCompressed) {
- _mesa_free((void *) srcData);
- _mesa_free(dstData);
- }
- return;
- }
-
- /* get dest gl_texture_image */
- dstImage = _mesa_get_tex_image(ctx, texUnit, target, level + 1);
- if (!dstImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
- return;
- }
-
- /* Free old image data */
- if (dstImage->Data)
- ctx->Driver.FreeTexImageData(ctx, dstImage);
-
- /* initialize new image */
- _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
- dstDepth, border, srcImage->InternalFormat);
- dstImage->DriverData = NULL;
- dstImage->TexFormat = srcImage->TexFormat;
- dstImage->FetchTexelc = srcImage->FetchTexelc;
- dstImage->FetchTexelf = srcImage->FetchTexelf;
- dstImage->IsCompressed = srcImage->IsCompressed;
- if (dstImage->IsCompressed) {
- dstImage->CompressedSize
- = ctx->Driver.CompressedTextureSize(ctx, dstImage->Width,
- dstImage->Height,
- dstImage->Depth,
- dstImage->TexFormat->MesaFormat);
- ASSERT(dstImage->CompressedSize > 0);
- }
-
- ASSERT(dstImage->TexFormat);
- ASSERT(dstImage->FetchTexelc);
- ASSERT(dstImage->FetchTexelf);
-
- /* Alloc new teximage data buffer.
- * Setup src and dest data pointers.
- */
- if (dstImage->IsCompressed) {
- dstImage->Data = _mesa_alloc_texmemory(dstImage->CompressedSize);
- if (!dstImage->Data) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
- return;
- }
- /* srcData and dstData are already set */
- ASSERT(srcData);
- ASSERT(dstData);
- }
- else {
- bytesPerTexel = dstImage->TexFormat->TexelBytes;
- ASSERT(dstWidth * dstHeight * dstDepth * bytesPerTexel > 0);
- dstImage->Data = _mesa_alloc_texmemory(dstWidth * dstHeight
- * dstDepth * bytesPerTexel);
- if (!dstImage->Data) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
- return;
- }
- srcData = (const GLubyte *) srcImage->Data;
- dstData = (GLubyte *) dstImage->Data;
- }
-
- /*
- * We use simple 2x2 averaging to compute the next mipmap level.
- */
- switch (target) {
- case GL_TEXTURE_1D:
- make_1d_mipmap(convertFormat, border,
- srcWidth, srcData,
- dstWidth, dstData);
- break;
- case GL_TEXTURE_2D:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- make_2d_mipmap(convertFormat, border,
- srcWidth, srcHeight, srcData,
- dstWidth, dstHeight, dstData);
- break;
- case GL_TEXTURE_3D:
- make_3d_mipmap(convertFormat, border,
- srcWidth, srcHeight, srcDepth, srcData,
- dstWidth, dstHeight, dstDepth, dstData);
- break;
- case GL_TEXTURE_RECTANGLE_NV:
- /* no mipmaps, do nothing */
- break;
- default:
- _mesa_problem(ctx, "bad dimensions in _mesa_generate_mipmaps");
- return;
- }
-
- if (dstImage->IsCompressed) {
- GLubyte *temp;
- /* compress image from dstData into dstImage->Data */
- const GLenum srcFormat = convertFormat->BaseFormat;
- 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 */
- dstRowStride, 0, /* strides */
- dstWidth, dstHeight, 1, /* size */
- srcFormat, CHAN_TYPE,
- dstData, /* src data, actually */
- &ctx->DefaultPacking);
- /* swap src and dest pointers */
- temp = (GLubyte *) srcData;
- srcData = dstData;
- dstData = temp;
- }
-
- } /* loop over mipmap levels */
-}
-
-
-/**
- * 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];
- }
- }
- }
-}
#if FEATURE_EXT_texture_sRGB
@@ -4380,11 +3609,29 @@ _mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
GLint col;
for (col = 0; col < width; col++) {
(*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]);
+ if (texImage->TexFormat->BaseFormat == GL_ALPHA) {
+ rgba[col][RCOMP] = 0.0;
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ }
+ else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE) {
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ rgba[col][ACOMP] = 1.0;
+ }
+ else if (texImage->TexFormat->BaseFormat == GL_LUMINANCE_ALPHA) {
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ }
+ else if (texImage->TexFormat->BaseFormat == GL_INTENSITY) {
+ rgba[col][GCOMP] = 0.0;
+ rgba[col][BCOMP] = 0.0;
+ rgba[col][ACOMP] = 1.0;
+ }
}
- _mesa_pack_rgba_span_float(ctx, width,
- (const GLfloat (*)[4]) rgba,
- format, type, dest, &ctx->Pack,
- 0 /* no image transfer */);
+ _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
+ format, type, dest,
+ &ctx->Pack, 0x0 /*image xfer ops*/);
} /* format */
} /* row */
} /* img */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 22:25:01 +0000