diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/histogram.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/histogram.c | 1187 |
1 files changed, 1187 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/histogram.c b/nx-X11/extras/Mesa/src/mesa/main/histogram.c new file mode 100644 index 000000000..29aced0c7 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/main/histogram.c @@ -0,0 +1,1187 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include "glheader.h" +#include "bufferobj.h" +#include "colormac.h" +#include "context.h" +#include "image.h" +#include "histogram.h" + + +/********************************************************************** + * Internal functions + */ + + +/* + * Update the min/max values from an array of fragment colors. + */ +void +_mesa_update_minmax(GLcontext *ctx, GLuint n, const GLfloat rgba[][4]) +{ + GLuint i; + for (i = 0; i < n; i++) { + /* update mins */ + if (rgba[i][RCOMP] < ctx->MinMax.Min[RCOMP]) + ctx->MinMax.Min[RCOMP] = rgba[i][RCOMP]; + if (rgba[i][GCOMP] < ctx->MinMax.Min[GCOMP]) + ctx->MinMax.Min[GCOMP] = rgba[i][GCOMP]; + if (rgba[i][BCOMP] < ctx->MinMax.Min[BCOMP]) + ctx->MinMax.Min[BCOMP] = rgba[i][BCOMP]; + if (rgba[i][ACOMP] < ctx->MinMax.Min[ACOMP]) + ctx->MinMax.Min[ACOMP] = rgba[i][ACOMP]; + + /* update maxs */ + if (rgba[i][RCOMP] > ctx->MinMax.Max[RCOMP]) + ctx->MinMax.Max[RCOMP] = rgba[i][RCOMP]; + if (rgba[i][GCOMP] > ctx->MinMax.Max[GCOMP]) + ctx->MinMax.Max[GCOMP] = rgba[i][GCOMP]; + if (rgba[i][BCOMP] > ctx->MinMax.Max[BCOMP]) + ctx->MinMax.Max[BCOMP] = rgba[i][BCOMP]; + if (rgba[i][ACOMP] > ctx->MinMax.Max[ACOMP]) + ctx->MinMax.Max[ACOMP] = rgba[i][ACOMP]; + } +} + + +/* + * Update the histogram values from an array of fragment colors. + */ +void +_mesa_update_histogram(GLcontext *ctx, GLuint n, const GLfloat rgba[][4]) +{ + const GLint max = ctx->Histogram.Width - 1; + GLfloat w = (GLfloat) max; + GLuint i; + + if (ctx->Histogram.Width == 0) + return; + + for (i = 0; i < n; i++) { + GLint ri = IROUND(rgba[i][RCOMP] * w); + GLint gi = IROUND(rgba[i][GCOMP] * w); + GLint bi = IROUND(rgba[i][BCOMP] * w); + GLint ai = IROUND(rgba[i][ACOMP] * w); + ri = CLAMP(ri, 0, max); + gi = CLAMP(gi, 0, max); + bi = CLAMP(bi, 0, max); + ai = CLAMP(ai, 0, max); + ctx->Histogram.Count[ri][RCOMP]++; + ctx->Histogram.Count[gi][GCOMP]++; + ctx->Histogram.Count[bi][BCOMP]++; + ctx->Histogram.Count[ai][ACOMP]++; + } +} + + +/* + * XXX the packed pixel formats haven't been tested. + */ +static void +pack_histogram( GLcontext *ctx, + GLuint n, CONST GLuint rgba[][4], + GLenum format, GLenum type, GLvoid *destination, + const struct gl_pixelstore_attrib *packing ) +{ + const GLint comps = _mesa_components_in_format(format); + GLuint luminance[MAX_WIDTH]; + + if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) { + GLuint i; + for (i = 0; i < n; i++) { + luminance[i] = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP]; + } + } + +#define PACK_MACRO(TYPE) \ + { \ + GLuint i; \ + switch (format) { \ + case GL_RED: \ + for (i=0;i<n;i++) \ + dst[i] = (TYPE) rgba[i][RCOMP]; \ + break; \ + case GL_GREEN: \ + for (i=0;i<n;i++) \ + dst[i] = (TYPE) rgba[i][GCOMP]; \ + break; \ + case GL_BLUE: \ + for (i=0;i<n;i++) \ + dst[i] = (TYPE) rgba[i][BCOMP]; \ + break; \ + case GL_ALPHA: \ + for (i=0;i<n;i++) \ + dst[i] = (TYPE) rgba[i][ACOMP]; \ + break; \ + case GL_LUMINANCE: \ + for (i=0;i<n;i++) \ + dst[i] = (TYPE) luminance[i]; \ + break; \ + case GL_LUMINANCE_ALPHA: \ + for (i=0;i<n;i++) { \ + dst[i*2+0] = (TYPE) luminance[i]; \ + dst[i*2+1] = (TYPE) rgba[i][ACOMP]; \ + } \ + break; \ + case GL_RGB: \ + for (i=0;i<n;i++) { \ + dst[i*3+0] = (TYPE) rgba[i][RCOMP]; \ + dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \ + dst[i*3+2] = (TYPE) rgba[i][BCOMP]; \ + } \ + break; \ + case GL_RGBA: \ + for (i=0;i<n;i++) { \ + dst[i*4+0] = (TYPE) rgba[i][RCOMP]; \ + dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \ + dst[i*4+2] = (TYPE) rgba[i][BCOMP]; \ + dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \ + } \ + break; \ + case GL_BGR: \ + for (i=0;i<n;i++) { \ + dst[i*3+0] = (TYPE) rgba[i][BCOMP]; \ + dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \ + dst[i*3+2] = (TYPE) rgba[i][RCOMP]; \ + } \ + break; \ + case GL_BGRA: \ + for (i=0;i<n;i++) { \ + dst[i*4+0] = (TYPE) rgba[i][BCOMP]; \ + dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \ + dst[i*4+2] = (TYPE) rgba[i][RCOMP]; \ + dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \ + } \ + break; \ + case GL_ABGR_EXT: \ + for (i=0;i<n;i++) { \ + dst[i*4+0] = (TYPE) rgba[i][ACOMP]; \ + dst[i*4+1] = (TYPE) rgba[i][BCOMP]; \ + dst[i*4+2] = (TYPE) rgba[i][GCOMP]; \ + dst[i*4+3] = (TYPE) rgba[i][RCOMP]; \ + } \ + break; \ + default: \ + _mesa_problem(ctx, "bad format in pack_histogram"); \ + } \ + } + + switch (type) { + case GL_UNSIGNED_BYTE: + { + GLubyte *dst = (GLubyte *) destination; + PACK_MACRO(GLubyte); + } + break; + case GL_BYTE: + { + GLbyte *dst = (GLbyte *) destination; + PACK_MACRO(GLbyte); + } + break; + case GL_UNSIGNED_SHORT: + { + GLushort *dst = (GLushort *) destination; + PACK_MACRO(GLushort); + if (packing->SwapBytes) { + _mesa_swap2(dst, n * comps); + } + } + break; + case GL_SHORT: + { + GLshort *dst = (GLshort *) destination; + PACK_MACRO(GLshort); + if (packing->SwapBytes) { + _mesa_swap2((GLushort *) dst, n * comps); + } + } + break; + case GL_UNSIGNED_INT: + { + GLuint *dst = (GLuint *) destination; + PACK_MACRO(GLuint); + if (packing->SwapBytes) { + _mesa_swap4(dst, n * comps); + } + } + break; + case GL_INT: + { + GLint *dst = (GLint *) destination; + PACK_MACRO(GLint); + if (packing->SwapBytes) { + _mesa_swap4((GLuint *) dst, n * comps); + } + } + break; + case GL_FLOAT: + { + GLfloat *dst = (GLfloat *) destination; + PACK_MACRO(GLfloat); + if (packing->SwapBytes) { + _mesa_swap4((GLuint *) dst, n * comps); + } + } + break; + case GL_HALF_FLOAT_ARB: + { + /* temporarily store as GLuints */ + GLuint temp[4*HISTOGRAM_TABLE_SIZE]; + GLhalfARB *dst = (GLhalfARB *) destination; + GLuint i; + /* get GLuint values */ + PACK_MACRO(GLuint); + /* convert to GLhalf */ + for (i = 0; i < n * comps; i++) { + dst[i] = _mesa_float_to_half((GLfloat) temp[i]); + } + if (packing->SwapBytes) { + _mesa_swap2((GLushort *) dst, n * comps); + } + } + break; + case GL_UNSIGNED_BYTE_3_3_2: + if (format == GL_RGB) { + GLubyte *dst = (GLubyte *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x7) << 5) + | ((rgba[i][GCOMP] & 0x7) << 2) + | ((rgba[i][BCOMP] & 0x3) ); + } + } + else { + GLubyte *dst = (GLubyte *) destination; + GLuint i; + ASSERT(format == GL_BGR); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x7) << 5) + | ((rgba[i][GCOMP] & 0x7) << 2) + | ((rgba[i][RCOMP] & 0x3) ); + } + } + break; + case GL_UNSIGNED_BYTE_2_3_3_REV: + if (format == GL_RGB) { + GLubyte *dst = (GLubyte *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x3) << 6) + | ((rgba[i][GCOMP] & 0x7) << 3) + | ((rgba[i][BCOMP] & 0x7) ); + } + } + else { + GLubyte *dst = (GLubyte *) destination; + GLuint i; + ASSERT(format == GL_BGR); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x3) << 6) + | ((rgba[i][GCOMP] & 0x7) << 3) + | ((rgba[i][RCOMP] & 0x7) ); + } + } + break; + case GL_UNSIGNED_SHORT_5_6_5: + if (format == GL_RGB) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x3f) << 5) + | ((rgba[i][BCOMP] & 0x1f) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_BGR); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x3f) << 5) + | ((rgba[i][RCOMP] & 0x1f) ); + } + } + break; + case GL_UNSIGNED_SHORT_5_6_5_REV: + if (format == GL_RGB) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x3f) << 5) + | ((rgba[i][RCOMP] & 0x1f) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_BGR); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x3f) << 5) + | ((rgba[i][BCOMP] & 0x1f) ); + } + } + break; + case GL_UNSIGNED_SHORT_4_4_4_4: + if (format == GL_RGBA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0xf) << 12) + | ((rgba[i][GCOMP] & 0xf) << 8) + | ((rgba[i][BCOMP] & 0xf) << 4) + | ((rgba[i][ACOMP] & 0xf) ); + } + } + else if (format == GL_BGRA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0xf) << 12) + | ((rgba[i][GCOMP] & 0xf) << 8) + | ((rgba[i][RCOMP] & 0xf) << 4) + | ((rgba[i][ACOMP] & 0xf) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xf) << 12) + | ((rgba[i][BCOMP] & 0xf) << 8) + | ((rgba[i][GCOMP] & 0xf) << 4) + | ((rgba[i][RCOMP] & 0xf) ); + } + } + break; + case GL_UNSIGNED_SHORT_4_4_4_4_REV: + if (format == GL_RGBA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xf) << 12) + | ((rgba[i][BCOMP] & 0xf) << 8) + | ((rgba[i][GCOMP] & 0xf) << 4) + | ((rgba[i][RCOMP] & 0xf) ); + } + } + else if (format == GL_BGRA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xf) << 12) + | ((rgba[i][RCOMP] & 0xf) << 8) + | ((rgba[i][GCOMP] & 0xf) << 4) + | ((rgba[i][BCOMP] & 0xf) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0xf) << 12) + | ((rgba[i][GCOMP] & 0xf) << 8) + | ((rgba[i][BCOMP] & 0xf) << 4) + | ((rgba[i][ACOMP] & 0xf) ); + } + } + break; + case GL_UNSIGNED_SHORT_5_5_5_1: + if (format == GL_RGBA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x1f) << 6) + | ((rgba[i][BCOMP] & 0x1f) << 1) + | ((rgba[i][ACOMP] & 0x1) ); + } + } + else if (format == GL_BGRA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x1f) << 6) + | ((rgba[i][RCOMP] & 0x1f) << 1) + | ((rgba[i][ACOMP] & 0x1) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11) + | ((rgba[i][BCOMP] & 0x1f) << 6) + | ((rgba[i][GCOMP] & 0x1f) << 1) + | ((rgba[i][RCOMP] & 0x1) ); + } + } + break; + case GL_UNSIGNED_SHORT_1_5_5_5_REV: + if (format == GL_RGBA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11) + | ((rgba[i][BCOMP] & 0x1f) << 6) + | ((rgba[i][GCOMP] & 0x1f) << 1) + | ((rgba[i][RCOMP] & 0x1) ); + } + } + else if (format == GL_BGRA) { + GLushort *dst = (GLushort *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11) + | ((rgba[i][RCOMP] & 0x1f) << 6) + | ((rgba[i][GCOMP] & 0x1f) << 1) + | ((rgba[i][BCOMP] & 0x1) ); + } + } + else { + GLushort *dst = (GLushort *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11) + | ((rgba[i][GCOMP] & 0x1f) << 6) + | ((rgba[i][BCOMP] & 0x1f) << 1) + | ((rgba[i][ACOMP] & 0x1) ); + } + } + break; + case GL_UNSIGNED_INT_8_8_8_8: + if (format == GL_RGBA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0xff) << 24) + | ((rgba[i][GCOMP] & 0xff) << 16) + | ((rgba[i][BCOMP] & 0xff) << 8) + | ((rgba[i][ACOMP] & 0xff) ); + } + } + else if (format == GL_BGRA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0xff) << 24) + | ((rgba[i][GCOMP] & 0xff) << 16) + | ((rgba[i][RCOMP] & 0xff) << 8) + | ((rgba[i][ACOMP] & 0xff) ); + } + } + else { + GLuint *dst = (GLuint *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xff) << 24) + | ((rgba[i][BCOMP] & 0xff) << 16) + | ((rgba[i][GCOMP] & 0xff) << 8) + | ((rgba[i][RCOMP] & 0xff) ); + } + } + break; + case GL_UNSIGNED_INT_8_8_8_8_REV: + if (format == GL_RGBA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xff) << 24) + | ((rgba[i][BCOMP] & 0xff) << 16) + | ((rgba[i][GCOMP] & 0xff) << 8) + | ((rgba[i][RCOMP] & 0xff) ); + } + } + else if (format == GL_BGRA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0xff) << 24) + | ((rgba[i][RCOMP] & 0xff) << 16) + | ((rgba[i][GCOMP] & 0xff) << 8) + | ((rgba[i][BCOMP] & 0xff) ); + } + } + else { + GLuint *dst = (GLuint *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0xff) << 24) + | ((rgba[i][GCOMP] & 0xff) << 16) + | ((rgba[i][BCOMP] & 0xff) << 8) + | ((rgba[i][ACOMP] & 0xff) ); + } + } + break; + case GL_UNSIGNED_INT_10_10_10_2: + if (format == GL_RGBA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22) + | ((rgba[i][GCOMP] & 0x3ff) << 12) + | ((rgba[i][BCOMP] & 0x3ff) << 2) + | ((rgba[i][ACOMP] & 0x3) ); + } + } + else if (format == GL_BGRA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][BCOMP] & 0x3ff) << 22) + | ((rgba[i][GCOMP] & 0x3ff) << 12) + | ((rgba[i][RCOMP] & 0x3ff) << 2) + | ((rgba[i][ACOMP] & 0x3) ); + } + } + else { + GLuint *dst = (GLuint *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22) + | ((rgba[i][BCOMP] & 0x3ff) << 12) + | ((rgba[i][GCOMP] & 0x3ff) << 2) + | ((rgba[i][RCOMP] & 0x3) ); + } + } + break; + case GL_UNSIGNED_INT_2_10_10_10_REV: + if (format == GL_RGBA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22) + | ((rgba[i][BCOMP] & 0x3ff) << 12) + | ((rgba[i][GCOMP] & 0x3ff) << 2) + | ((rgba[i][RCOMP] & 0x3) ); + } + } + else if (format == GL_BGRA) { + GLuint *dst = (GLuint *) destination; + GLuint i; + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22) + | ((rgba[i][RCOMP] & 0x3ff) << 12) + | ((rgba[i][GCOMP] & 0x3ff) << 2) + | ((rgba[i][BCOMP] & 0x3) ); + } + } + else { + GLuint *dst = (GLuint *) destination; + GLuint i; + ASSERT(format == GL_ABGR_EXT); + for (i = 0; i < n; i++) { + dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22) + | ((rgba[i][GCOMP] & 0x3ff) << 12) + | ((rgba[i][BCOMP] & 0x3ff) << 2) + | ((rgba[i][ACOMP] & 0x3) ); + } + } + break; + default: + _mesa_problem(ctx, "Bad type in pack_histogram"); + } + +#undef PACK_MACRO +} + + +/* + * Given an internalFormat token passed to glHistogram or glMinMax, + * return the corresponding base format. + * Return -1 if invalid token. + */ +static GLint +base_histogram_format( GLenum format ) +{ + switch (format) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return GL_ALPHA; + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return GL_LUMINANCE_ALPHA; + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return GL_RGB; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return GL_RGBA; + default: + return -1; /* error */ + } +} + + + +/********************************************************************** + * API functions + */ + + +void GLAPIENTRY +_mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax"); + return; + } + + if (target != GL_MINMAX) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)"); + return; + } + + if (format != GL_RED && + format != GL_GREEN && + format != GL_BLUE && + format != GL_ALPHA && + format != GL_RGB && + format != GL_BGR && + format != GL_RGBA && + format != GL_BGRA && + format != GL_ABGR_EXT && + format != GL_LUMINANCE && + format != GL_LUMINANCE_ALPHA) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMax(format)"); + } + + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)"); + return; + } + + if (ctx->Pack.BufferObj->Name) { + /* pack min/max values into a PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(1, &ctx->Pack, 2, 1, 1, + format, type, values)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetMinMax(invalid PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + GL_WRITE_ONLY_ARB, + ctx->Pack.BufferObj); + if (!buf) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION,"glGetMinMax(PBO is mapped)"); + return; + } + values = ADD_POINTERS(buf, values); + } + else if (!values) { + /* not an error */ + return; + } + + { + GLfloat minmax[2][4]; + minmax[0][RCOMP] = CLAMP(ctx->MinMax.Min[RCOMP], 0.0F, 1.0F); + minmax[0][GCOMP] = CLAMP(ctx->MinMax.Min[GCOMP], 0.0F, 1.0F); + minmax[0][BCOMP] = CLAMP(ctx->MinMax.Min[BCOMP], 0.0F, 1.0F); + minmax[0][ACOMP] = CLAMP(ctx->MinMax.Min[ACOMP], 0.0F, 1.0F); + minmax[1][RCOMP] = CLAMP(ctx->MinMax.Max[RCOMP], 0.0F, 1.0F); + minmax[1][GCOMP] = CLAMP(ctx->MinMax.Max[GCOMP], 0.0F, 1.0F); + minmax[1][BCOMP] = CLAMP(ctx->MinMax.Max[BCOMP], 0.0F, 1.0F); + minmax[1][ACOMP] = CLAMP(ctx->MinMax.Max[ACOMP], 0.0F, 1.0F); + _mesa_pack_rgba_span_float(ctx, 2, (CONST GLfloat (*)[4]) minmax, + format, type, values, &ctx->Pack, 0); + } + + if (ctx->Pack.BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + ctx->Pack.BufferObj); + } + + if (reset) { + _mesa_ResetMinmax(GL_MINMAX); + } +} + + +void GLAPIENTRY +_mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram"); + return; + } + + if (target != GL_HISTOGRAM) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)"); + return; + } + + if (format != GL_RED && + format != GL_GREEN && + format != GL_BLUE && + format != GL_ALPHA && + format != GL_RGB && + format != GL_BGR && + format != GL_RGBA && + format != GL_BGRA && + format != GL_ABGR_EXT && + format != GL_LUMINANCE && + format != GL_LUMINANCE_ALPHA) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(format)"); + } + + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)"); + return; + } + + if (ctx->Pack.BufferObj->Name) { + /* pack min/max values into a PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(1, &ctx->Pack, ctx->Histogram.Width, 1, 1, + format, type, values)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetHistogram(invalid PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + GL_WRITE_ONLY_ARB, + ctx->Pack.BufferObj); + if (!buf) { + /* buffer is already mapped - that's an error */ + _mesa_error(ctx,GL_INVALID_OPERATION,"glGetHistogram(PBO is mapped)"); + return; + } + values = ADD_POINTERS(buf, values); + } + else if (!values) { + /* not an error */ + return; + } + + pack_histogram(ctx, ctx->Histogram.Width, + (CONST GLuint (*)[4]) ctx->Histogram.Count, + format, type, values, &ctx->Pack); + + if (ctx->Pack.BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, + ctx->Pack.BufferObj); + } + + if (reset) { + GLuint i; + for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) { + ctx->Histogram.Count[i][0] = 0; + ctx->Histogram.Count[i][1] = 0; + ctx->Histogram.Count[i][2] = 0; + ctx->Histogram.Count[i][3] = 0; + } + } +} + + +void GLAPIENTRY +_mesa_GetHistogramParameterfv(GLenum target, GLenum pname, GLfloat *params) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameterfv"); + return; + } + + if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(target)"); + return; + } + + switch (pname) { + case GL_HISTOGRAM_WIDTH: + *params = (GLfloat) ctx->Histogram.Width; + break; + case GL_HISTOGRAM_FORMAT: + *params = (GLfloat) ctx->Histogram.Format; + break; + case GL_HISTOGRAM_RED_SIZE: + *params = (GLfloat) ctx->Histogram.RedSize; + break; + case GL_HISTOGRAM_GREEN_SIZE: + *params = (GLfloat) ctx->Histogram.GreenSize; + break; + case GL_HISTOGRAM_BLUE_SIZE: + *params = (GLfloat) ctx->Histogram.BlueSize; + break; + case GL_HISTOGRAM_ALPHA_SIZE: + *params = (GLfloat) ctx->Histogram.AlphaSize; + break; + case GL_HISTOGRAM_LUMINANCE_SIZE: + *params = (GLfloat) ctx->Histogram.LuminanceSize; + break; + case GL_HISTOGRAM_SINK: + *params = (GLfloat) ctx->Histogram.Sink; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(pname)"); + } +} + + +void GLAPIENTRY +_mesa_GetHistogramParameteriv(GLenum target, GLenum pname, GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameteriv"); + return; + } + + if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(target)"); + return; + } + + switch (pname) { + case GL_HISTOGRAM_WIDTH: + *params = (GLint) ctx->Histogram.Width; + break; + case GL_HISTOGRAM_FORMAT: + *params = (GLint) ctx->Histogram.Format; + break; + case GL_HISTOGRAM_RED_SIZE: + *params = (GLint) ctx->Histogram.RedSize; + break; + case GL_HISTOGRAM_GREEN_SIZE: + *params = (GLint) ctx->Histogram.GreenSize; + break; + case GL_HISTOGRAM_BLUE_SIZE: + *params = (GLint) ctx->Histogram.BlueSize; + break; + case GL_HISTOGRAM_ALPHA_SIZE: + *params = (GLint) ctx->Histogram.AlphaSize; + break; + case GL_HISTOGRAM_LUMINANCE_SIZE: + *params = (GLint) ctx->Histogram.LuminanceSize; + break; + case GL_HISTOGRAM_SINK: + *params = (GLint) ctx->Histogram.Sink; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(pname)"); + } +} + + +void GLAPIENTRY +_mesa_GetMinmaxParameterfv(GLenum target, GLenum pname, GLfloat *params) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameterfv"); + return; + } + if (target != GL_MINMAX) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameterfv(target)"); + return; + } + if (pname == GL_MINMAX_FORMAT) { + *params = (GLfloat) ctx->MinMax.Format; + } + else if (pname == GL_MINMAX_SINK) { + *params = (GLfloat) ctx->MinMax.Sink; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameterfv(pname)"); + } +} + + +void GLAPIENTRY +_mesa_GetMinmaxParameteriv(GLenum target, GLenum pname, GLint *params) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameteriv"); + return; + } + if (target != GL_MINMAX) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameteriv(target)"); + return; + } + if (pname == GL_MINMAX_FORMAT) { + *params = (GLint) ctx->MinMax.Format; + } + else if (pname == GL_MINMAX_SINK) { + *params = (GLint) ctx->MinMax.Sink; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameteriv(pname)"); + } +} + + +void GLAPIENTRY +_mesa_Histogram(GLenum target, GLsizei width, GLenum internalFormat, GLboolean sink) +{ + GLuint i; + GLboolean error = GL_FALSE; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */ + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glHistogram"); + return; + } + + if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) { + _mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(target)"); + return; + } + + if (width < 0 || width > HISTOGRAM_TABLE_SIZE) { + if (target == GL_PROXY_HISTOGRAM) { + error = GL_TRUE; + } + else { + if (width < 0) + _mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)"); + else + _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)"); + return; + } + } + + if (width != 0 && _mesa_bitcount(width) != 1) { + if (target == GL_PROXY_HISTOGRAM) { + error = GL_TRUE; + } + else { + _mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)"); + return; + } + } + + if (base_histogram_format(internalFormat) < 0) { + if (target == GL_PROXY_HISTOGRAM) { + error = GL_TRUE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)"); + return; + } + } + + /* reset histograms */ + for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) { + ctx->Histogram.Count[i][0] = 0; + ctx->Histogram.Count[i][1] = 0; + ctx->Histogram.Count[i][2] = 0; + ctx->Histogram.Count[i][3] = 0; + } + + if (error) { + ctx->Histogram.Width = 0; + ctx->Histogram.Format = 0; + ctx->Histogram.RedSize = 0; + ctx->Histogram.GreenSize = 0; + ctx->Histogram.BlueSize = 0; + ctx->Histogram.AlphaSize = 0; + ctx->Histogram.LuminanceSize = 0; + } + else { + ctx->Histogram.Width = width; + ctx->Histogram.Format = internalFormat; + ctx->Histogram.Sink = sink; + ctx->Histogram.RedSize = 8 * sizeof(GLuint); + ctx->Histogram.GreenSize = 8 * sizeof(GLuint); + ctx->Histogram.BlueSize = 8 * sizeof(GLuint); + ctx->Histogram.AlphaSize = 8 * sizeof(GLuint); + ctx->Histogram.LuminanceSize = 8 * sizeof(GLuint); + } + + ctx->NewState |= _NEW_PIXEL; +} + + +void GLAPIENTRY +_mesa_Minmax(GLenum target, GLenum internalFormat, GLboolean sink) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glMinmax"); + return; + } + + if (target != GL_MINMAX) { + _mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(target)"); + return; + } + + if (base_histogram_format(internalFormat) < 0) { + _mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(internalFormat)"); + return; + } + + if (ctx->MinMax.Sink == sink) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->MinMax.Sink = sink; +} + + +void GLAPIENTRY +_mesa_ResetHistogram(GLenum target) +{ + GLuint i; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */ + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glResetHistogram"); + return; + } + + if (target != GL_HISTOGRAM) { + _mesa_error(ctx, GL_INVALID_ENUM, "glResetHistogram(target)"); + return; + } + + for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) { + ctx->Histogram.Count[i][0] = 0; + ctx->Histogram.Count[i][1] = 0; + ctx->Histogram.Count[i][2] = 0; + ctx->Histogram.Count[i][3] = 0; + } + + ctx->NewState |= _NEW_PIXEL; +} + + +void GLAPIENTRY +_mesa_ResetMinmax(GLenum target) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glResetMinmax"); + return; + } + + if (target != GL_MINMAX) { + _mesa_error(ctx, GL_INVALID_ENUM, "glResetMinMax(target)"); + return; + } + + ctx->MinMax.Min[RCOMP] = 1000; ctx->MinMax.Max[RCOMP] = -1000; + ctx->MinMax.Min[GCOMP] = 1000; ctx->MinMax.Max[GCOMP] = -1000; + ctx->MinMax.Min[BCOMP] = 1000; ctx->MinMax.Max[BCOMP] = -1000; + ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000; + ctx->NewState |= _NEW_PIXEL; +} + + + +/**********************************************************************/ +/***** Initialization *****/ +/**********************************************************************/ + +void _mesa_init_histogram( GLcontext * ctx ) +{ + int i; + + /* Histogram group */ + ctx->Histogram.Width = 0; + ctx->Histogram.Format = GL_RGBA; + ctx->Histogram.Sink = GL_FALSE; + ctx->Histogram.RedSize = 0; + ctx->Histogram.GreenSize = 0; + ctx->Histogram.BlueSize = 0; + ctx->Histogram.AlphaSize = 0; + ctx->Histogram.LuminanceSize = 0; + for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) { + ctx->Histogram.Count[i][0] = 0; + ctx->Histogram.Count[i][1] = 0; + ctx->Histogram.Count[i][2] = 0; + ctx->Histogram.Count[i][3] = 0; + } + + /* Min/Max group */ + ctx->MinMax.Format = GL_RGBA; + ctx->MinMax.Sink = GL_FALSE; + ctx->MinMax.Min[RCOMP] = 1000; ctx->MinMax.Max[RCOMP] = -1000; + ctx->MinMax.Min[GCOMP] = 1000; ctx->MinMax.Max[GCOMP] = -1000; + ctx->MinMax.Min[BCOMP] = 1000; ctx->MinMax.Max[BCOMP] = -1000; + ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000; +} |