X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_zoom.c;h=f224627d50eac2ac8b8b3eceed4ed6db2d4cdd1b;hb=86af037e6a1643284f87c5e01c3fcb09dd07bf35;hp=a4e8d9a36fe6d300115f0aca41d25d46f45b2248;hpb=462d8f5fafcc5ac69ea89cac1222abadded642e2;p=mesa.git diff --git a/src/mesa/swrast/s_zoom.c b/src/mesa/swrast/s_zoom.c index a4e8d9a36fe..f224627d50e 100644 --- a/src/mesa/swrast/s_zoom.c +++ b/src/mesa/swrast/s_zoom.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5.2 + * Version: 7.1 * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2008 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"), @@ -22,10 +22,10 @@ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ -#include "glheader.h" -#include "macros.h" -#include "imports.h" -#include "colormac.h" +#include "main/glheader.h" +#include "main/macros.h" +#include "main/imports.h" +#include "main/colormac.h" #include "s_context.h" #include "s_span.h" @@ -37,8 +37,9 @@ * Compute the bounds of the region resulting from zooming a pixel span. * The resulting region will be entirely inside the window/scissor bounds * so no additional clipping is needed. - * \param imageX, imageY position of the overall image being drawn + * \param imageX, imageY position of the mage being drawn (gl WindowPos) * \param spanX, spanY position of span being drawing + * \param width number of pixels in span * \param x0, x1 returned X bounds of zoomed region [x0, x1) * \param y0, y1 returned Y bounds of zoomed region [y0, y1) * \return GL_TRUE if any zoomed pixels visible, GL_FALSE if totally clipped @@ -98,7 +99,11 @@ compute_zoomed_bounds(GLcontext *ctx, GLint imageX, GLint imageY, /** - * Can use this for unzooming X or Y values. + * Convert a zoomed x image coordinate back to an unzoomed x coord. + * 'zx' is screen position of a pixel in the zoomed image, who's left edge + * is at 'imageX'. + * return corresponding x coord in the original, unzoomed image. + * This can use this for unzooming X or Y values. */ static INLINE GLint unzoom_x(GLfloat zoomX, GLint imageX, GLint zx) @@ -108,7 +113,10 @@ unzoom_x(GLfloat zoomX, GLint imageX, GLint zx) zx - imageX = (x - imageX) * zoomX; (zx - imageX) / zoomX = x - imageX; */ - GLint x = imageX + (GLint) ((zx - imageX) / zoomX); + GLint x; + if (zoomX < 0.0) + zx++; + x = imageX + (GLint) ((zx - imageX) / zoomX); return x; } @@ -122,8 +130,8 @@ static void zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, const GLvoid *src, GLenum format ) { + SWcontext *swrast = SWRAST_CONTEXT(ctx); SWspan zoomed; - SWspanarrays zoomed_arrays; /* this is big! */ GLint x0, x1, y0, y1; GLint zoomedWidth; @@ -132,6 +140,13 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, return; /* totally clipped */ } + if (!swrast->ZoomedArrays) { + /* allocate on demand */ + swrast->ZoomedArrays = (SWspanarrays *) CALLOC(sizeof(SWspanarrays)); + if (!swrast->ZoomedArrays) + return; + } + zoomedWidth = x1 - x0; ASSERT(zoomedWidth > 0); ASSERT(zoomedWidth <= MAX_WIDTH); @@ -140,29 +155,25 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, ASSERT((span->arrayMask & SPAN_XY) == 0); ASSERT(span->primitive == GL_BITMAP); - INIT_SPAN(zoomed, GL_BITMAP, 0, 0, 0); + INIT_SPAN(zoomed, GL_BITMAP); zoomed.x = x0; zoomed.end = zoomedWidth; - zoomed.array = &zoomed_arrays; - zoomed_arrays.ChanType = span->array->ChanType; - /* XXX temporary */ -#if CHAN_TYPE == GL_UNSIGNED_BYTE - zoomed_arrays.rgba = zoomed_arrays.color.sz1.rgba; - zoomed_arrays.spec = zoomed_arrays.color.sz1.spec; -#elif CHAN_TYPE == GL_UNSIGNED_SHORT - zoomed_arrays.rgba = zoomed_arrays.color.sz2.rgba; - zoomed_arrays.spec = zoomed_arrays.color.sz2.spec; -#else - zoomed_arrays.rgba = zoomed_arrays.color.sz4.rgba; - zoomed_arrays.spec = zoomed_arrays.color.sz4.spec; -#endif - - - /* copy fog interp info */ + zoomed.array = swrast->ZoomedArrays; + zoomed.array->ChanType = span->array->ChanType; + if (zoomed.array->ChanType == GL_UNSIGNED_BYTE) + zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba8; + else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) + zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->rgba16; + else + zoomed.array->rgba = (GLchan (*)[4]) zoomed.array->attribs[FRAG_ATTRIB_COL0]; + + COPY_4V(zoomed.attrStart[FRAG_ATTRIB_WPOS], span->attrStart[FRAG_ATTRIB_WPOS]); + COPY_4V(zoomed.attrStepX[FRAG_ATTRIB_WPOS], span->attrStepX[FRAG_ATTRIB_WPOS]); + COPY_4V(zoomed.attrStepY[FRAG_ATTRIB_WPOS], span->attrStepY[FRAG_ATTRIB_WPOS]); + zoomed.attrStart[FRAG_ATTRIB_FOGC][0] = span->attrStart[FRAG_ATTRIB_FOGC][0]; zoomed.attrStepX[FRAG_ATTRIB_FOGC][0] = span->attrStepX[FRAG_ATTRIB_FOGC][0]; zoomed.attrStepY[FRAG_ATTRIB_FOGC][0] = span->attrStepY[FRAG_ATTRIB_FOGC][0]; - /* XXX copy texcoord info? */ if (format == GL_RGBA || format == GL_RGB) { /* copy Z info */ @@ -171,17 +182,9 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, /* we'll generate an array of colorss */ zoomed.interpMask = span->interpMask & ~SPAN_RGBA; zoomed.arrayMask |= SPAN_RGBA; + zoomed.arrayAttribs |= FRAG_BIT_COL0; /* we'll produce these values */ ASSERT(span->arrayMask & SPAN_RGBA); } - else if (format == GL_COLOR_INDEX) { - /* copy Z info */ - zoomed.z = span->z; - zoomed.zStep = span->zStep; - /* we'll generate an array of color indexes */ - zoomed.interpMask = span->interpMask & ~SPAN_INDEX; - zoomed.arrayMask |= SPAN_INDEX; - ASSERT(span->arrayMask & SPAN_INDEX); - } else if (format == GL_DEPTH_COMPONENT) { /* Copy color info */ zoomed.red = span->red; @@ -210,8 +213,8 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, for (i = 0; i < zoomedWidth; i++) { GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; ASSERT(j >= 0); - ASSERT(j < span->end); - COPY_4UBV(zoomed.array->color.sz1.rgba[i], rgba[j]); + ASSERT(j < (GLint) span->end); + COPY_4UBV(zoomed.array->rgba8[i], rgba[j]); } } else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) { @@ -220,8 +223,8 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, for (i = 0; i < zoomedWidth; i++) { GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; ASSERT(j >= 0); - ASSERT(j < span->end); - COPY_4V(zoomed.array->color.sz2.rgba[i], rgba[j]); + ASSERT(j < (GLint) span->end); + COPY_4V(zoomed.array->rgba16[i], rgba[j]); } } else { @@ -242,11 +245,11 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, for (i = 0; i < zoomedWidth; i++) { GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; ASSERT(j >= 0); - ASSERT(j < span->end); - zoomed.array->color.sz1.rgba[i][0] = rgb[j][0]; - zoomed.array->color.sz1.rgba[i][1] = rgb[j][1]; - zoomed.array->color.sz1.rgba[i][2] = rgb[j][2]; - zoomed.array->color.sz1.rgba[i][3] = 0xff; + ASSERT(j < (GLint) span->end); + zoomed.array->rgba8[i][0] = rgb[j][0]; + zoomed.array->rgba8[i][1] = rgb[j][1]; + zoomed.array->rgba8[i][2] = rgb[j][2]; + zoomed.array->rgba8[i][3] = 0xff; } } else if (zoomed.array->ChanType == GL_UNSIGNED_SHORT) { @@ -255,11 +258,11 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, for (i = 0; i < zoomedWidth; i++) { GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; ASSERT(j >= 0); - ASSERT(j < span->end); - zoomed.array->color.sz2.rgba[i][0] = rgb[j][0]; - zoomed.array->color.sz2.rgba[i][1] = rgb[j][1]; - zoomed.array->color.sz2.rgba[i][2] = rgb[j][2]; - zoomed.array->color.sz2.rgba[i][3] = 0xffff; + ASSERT(j < (GLint) span->end); + zoomed.array->rgba16[i][0] = rgb[j][0]; + zoomed.array->rgba16[i][1] = rgb[j][1]; + zoomed.array->rgba16[i][2] = rgb[j][2]; + zoomed.array->rgba16[i][3] = 0xffff; } } else { @@ -276,27 +279,17 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, } } } - else if (format == GL_COLOR_INDEX) { - const GLuint *indexes = (const GLuint *) src; - GLint i; - for (i = 0; i < zoomedWidth; i++) { - GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; - ASSERT(j >= 0); - ASSERT(j < span->end); - zoomed.array->index[i] = indexes[j]; - } - } else if (format == GL_DEPTH_COMPONENT) { const GLuint *zValues = (const GLuint *) src; GLint i; for (i = 0; i < zoomedWidth; i++) { GLint j = unzoom_x(ctx->Pixel.ZoomX, imgX, x0 + i) - span->x; ASSERT(j >= 0); - ASSERT(j < span->end); + ASSERT(j < (GLint) span->end); zoomed.array->z[i] = zValues[j]; } - /* Now, fall into either the RGB or COLOR_INDEX path below */ - format = ctx->Visual.rgbMode ? GL_RGBA : GL_COLOR_INDEX; + /* Now, fall into the RGB path below */ + format = GL_RGBA; } /* write the span in rows [r0, r1) */ @@ -306,37 +299,20 @@ zoom_span( GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span, * Also, clipping may change the span end value, so store it as well. */ const GLint end = zoomed.end; /* save */ - /* use specular color array for temp storage */ - void *rgbaSave = zoomed.array->spec; + GLuint rgbaSave[MAX_WIDTH][4]; const GLint pixelSize = (zoomed.array->ChanType == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) : ((zoomed.array->ChanType == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort) : 4 * sizeof(GLfloat)); if (y1 - y0 > 1) { - MEMCPY(rgbaSave, zoomed.array->rgba, zoomed.end * pixelSize); + memcpy(rgbaSave, zoomed.array->rgba, zoomed.end * pixelSize); } for (zoomed.y = y0; zoomed.y < y1; zoomed.y++) { _swrast_write_rgba_span(ctx, &zoomed); zoomed.end = end; /* restore */ if (y1 - y0 > 1) { /* restore the colors */ - MEMCPY(zoomed.array->rgba, rgbaSave, zoomed.end * pixelSize); - } - } - } - else if (format == GL_COLOR_INDEX) { - /* use specular color array for temp storage */ - GLuint *indexSave = (GLuint *) zoomed.array->spec; - const GLint end = zoomed.end; /* save */ - if (y1 - y0 > 1) { - MEMCPY(indexSave, zoomed.array->index, zoomed.end * sizeof(GLuint)); - } - for (zoomed.y = y0; zoomed.y < y1; zoomed.y++) { - _swrast_write_index_span(ctx, &zoomed); - zoomed.end = end; /* restore */ - if (y1 - y0 > 1) { - /* restore the colors */ - MEMCPY(zoomed.array->index, indexSave, zoomed.end * sizeof(GLuint)); + memcpy(zoomed.array->rgba, rgbaSave, zoomed.end * pixelSize); } } } @@ -359,15 +335,6 @@ _swrast_write_zoomed_rgb_span(GLcontext *ctx, GLint imgX, GLint imgY, } -void -_swrast_write_zoomed_index_span(GLcontext *ctx, GLint imgX, GLint imgY, - const SWspan *span) -{ - zoom_span(ctx, imgX, imgY, span, - (const GLvoid *) span->array->index, GL_COLOR_INDEX); -} - - void _swrast_write_zoomed_depth_span(GLcontext *ctx, GLint imgX, GLint imgY, const SWspan *span)