diff options
Diffstat (limited to 'src/mesa/main/histogram.c')
-rw-r--r-- | src/mesa/main/histogram.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/mesa/main/histogram.c b/src/mesa/main/histogram.c index 6a7f09489c..77c458d540 100644 --- a/src/mesa/main/histogram.c +++ b/src/mesa/main/histogram.c @@ -31,71 +31,6 @@ #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. |