diff options
Diffstat (limited to 'src/mesa/swrast/s_span.c')
| -rw-r--r-- | src/mesa/swrast/s_span.c | 447 |
1 files changed, 65 insertions, 382 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index 905cf3d550..29f070686f 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -80,41 +80,34 @@ _swrast_span_default_attribs(GLcontext *ctx, SWspan *span) span->attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0; /* primary color, or color index */ - if (ctx->Visual.rgbMode) { - GLchan r, g, b, a; - UNCLAMPED_FLOAT_TO_CHAN(r, ctx->Current.RasterColor[0]); - UNCLAMPED_FLOAT_TO_CHAN(g, ctx->Current.RasterColor[1]); - UNCLAMPED_FLOAT_TO_CHAN(b, ctx->Current.RasterColor[2]); - UNCLAMPED_FLOAT_TO_CHAN(a, ctx->Current.RasterColor[3]); + GLchan r, g, b, a; + UNCLAMPED_FLOAT_TO_CHAN(r, ctx->Current.RasterColor[0]); + UNCLAMPED_FLOAT_TO_CHAN(g, ctx->Current.RasterColor[1]); + UNCLAMPED_FLOAT_TO_CHAN(b, ctx->Current.RasterColor[2]); + UNCLAMPED_FLOAT_TO_CHAN(a, ctx->Current.RasterColor[3]); #if CHAN_TYPE == GL_FLOAT - span->red = r; - span->green = g; - span->blue = b; - span->alpha = a; + span->red = r; + span->green = g; + span->blue = b; + span->alpha = a; #else - span->red = IntToFixed(r); - span->green = IntToFixed(g); - span->blue = IntToFixed(b); - span->alpha = IntToFixed(a); + span->red = IntToFixed(r); + span->green = IntToFixed(g); + span->blue = IntToFixed(b); + span->alpha = IntToFixed(a); #endif - span->redStep = 0; - span->greenStep = 0; - span->blueStep = 0; - span->alphaStep = 0; - span->interpMask |= SPAN_RGBA; - - COPY_4V(span->attrStart[FRAG_ATTRIB_COL0], ctx->Current.RasterColor); - ASSIGN_4V(span->attrStepX[FRAG_ATTRIB_COL0], 0.0, 0.0, 0.0, 0.0); - ASSIGN_4V(span->attrStepY[FRAG_ATTRIB_COL0], 0.0, 0.0, 0.0, 0.0); - } - else { - span->index = FloatToFixed(ctx->Current.RasterIndex); - span->indexStep = 0; - span->interpMask |= SPAN_INDEX; - } + span->redStep = 0; + span->greenStep = 0; + span->blueStep = 0; + span->alphaStep = 0; + span->interpMask |= SPAN_RGBA; + + COPY_4V(span->attrStart[FRAG_ATTRIB_COL0], ctx->Current.RasterColor); + ASSIGN_4V(span->attrStepX[FRAG_ATTRIB_COL0], 0.0, 0.0, 0.0, 0.0); + ASSIGN_4V(span->attrStepY[FRAG_ATTRIB_COL0], 0.0, 0.0, 0.0, 0.0); /* Secondary color */ - if (ctx->Visual.rgbMode && (ctx->Light.Enabled || ctx->Fog.ColorSumEnabled)) + if (ctx->Light.Enabled || ctx->Fog.ColorSumEnabled) { COPY_4V(span->attrStart[FRAG_ATTRIB_COL1], ctx->Current.RasterSecondaryColor); ASSIGN_4V(span->attrStepX[FRAG_ATTRIB_COL1], 0.0, 0.0, 0.0, 0.0); @@ -374,38 +367,6 @@ interpolate_float_colors(SWspan *span) -/* Fill in the span.color.index array from the interpolation values */ -static INLINE void -interpolate_indexes(GLcontext *ctx, SWspan *span) -{ - GLfixed index = span->index; - const GLint indexStep = span->indexStep; - const GLuint n = span->end; - GLuint *indexes = span->array->index; - GLuint i; - (void) ctx; - - ASSERT(!(span->arrayMask & SPAN_INDEX)); - - if ((span->interpMask & SPAN_FLAT) || (indexStep == 0)) { - /* constant color */ - index = FixedToInt(index); - for (i = 0; i < n; i++) { - indexes[i] = index; - } - } - else { - /* interpolate */ - for (i = 0; i < n; i++) { - indexes[i] = FixedToInt(index); - index += indexStep; - } - } - span->arrayMask |= SPAN_INDEX; - span->interpMask &= ~SPAN_INDEX; -} - - /** * Fill in the span.zArray array from the span->z, zStep values. */ @@ -784,14 +745,47 @@ clip_span( GLcontext *ctx, SWspan *span ) * For arrays of values, shift them left. */ for (i = 0; i < FRAG_ATTRIB_MAX; i++) { + if (span->interpMask & (1 << i)) { + GLuint j; + for (j = 0; j < 4; j++) { + span->attrStart[i][j] += leftClip * span->attrStepX[i][j]; + } + } + } + + span->red += leftClip * span->redStep; + span->green += leftClip * span->greenStep; + span->blue += leftClip * span->blueStep; + span->alpha += leftClip * span->alphaStep; + span->index += leftClip * span->indexStep; + span->z += leftClip * span->zStep; + span->intTex[0] += leftClip * span->intTexStep[0]; + span->intTex[1] += leftClip * span->intTexStep[1]; + +#define SHIFT_ARRAY(ARRAY, SHIFT, LEN) \ + memcpy(ARRAY, ARRAY + (SHIFT), (LEN) * sizeof(ARRAY[0])) + + for (i = 0; i < FRAG_ATTRIB_MAX; i++) { if (span->arrayAttribs & (1 << i)) { /* shift array elements left by 'leftClip' */ - _mesa_memcpy(span->array->attribs[i], - span->array->attribs[i] + leftClip, - (n - leftClip) * 4 * sizeof(GLfloat)); + SHIFT_ARRAY(span->array->attribs[i], leftClip, n - leftClip); } } + SHIFT_ARRAY(span->array->mask, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->rgba8, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->rgba16, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->x, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->y, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->z, leftClip, n - leftClip); + SHIFT_ARRAY(span->array->index, leftClip, n - leftClip); + for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) { + SHIFT_ARRAY(span->array->lambda[i], leftClip, n - leftClip); + } + SHIFT_ARRAY(span->array->coverage, leftClip, n - leftClip); + +#undef SHIFT_ARRAY + span->leftClip = leftClip; span->x = xmin; span->end -= leftClip; @@ -809,249 +803,6 @@ clip_span( GLcontext *ctx, SWspan *span ) /** - * Apply all the per-fragment opertions to a span of color index fragments - * and write them to the enabled color drawbuffers. - * The 'span' parameter can be considered to be const. Note that - * span->interpMask and span->arrayMask may be changed but will be restored - * to their original values before returning. - */ -void -_swrast_write_index_span( GLcontext *ctx, SWspan *span) -{ - const SWcontext *swrast = SWRAST_CONTEXT(ctx); - const GLbitfield origInterpMask = span->interpMask; - const GLbitfield origArrayMask = span->arrayMask; - struct gl_framebuffer *fb = ctx->DrawBuffer; - - ASSERT(span->end <= MAX_WIDTH); - ASSERT(span->primitive == GL_POINT || span->primitive == GL_LINE || - span->primitive == GL_POLYGON || span->primitive == GL_BITMAP); - ASSERT((span->interpMask | span->arrayMask) & SPAN_INDEX); - /* - ASSERT((span->interpMask & span->arrayMask) == 0); - */ - - if (span->arrayMask & SPAN_MASK) { - /* mask was initialized by caller, probably glBitmap */ - span->writeAll = GL_FALSE; - } - else { - _mesa_memset(span->array->mask, 1, span->end); - span->writeAll = GL_TRUE; - } - - /* Clipping */ - if ((swrast->_RasterMask & CLIP_BIT) || (span->primitive != GL_POLYGON)) { - if (!clip_span(ctx, span)) { - return; - } - } - - if (!(span->arrayMask & SPAN_MASK)) { - /* post-clip sanity check */ - assert(span->x >= 0); - assert(span->y >= 0); - } - - /* Depth bounds test */ - if (ctx->Depth.BoundsTest && fb->Visual.depthBits > 0) { - if (!_swrast_depth_bounds_test(ctx, span)) { - return; - } - } - -#ifdef DEBUG - /* Make sure all fragments are within window bounds */ - if (span->arrayMask & SPAN_XY) { - GLuint i; - for (i = 0; i < span->end; i++) { - if (span->array->mask[i]) { - assert(span->array->x[i] >= fb->_Xmin); - assert(span->array->x[i] < fb->_Xmax); - assert(span->array->y[i] >= fb->_Ymin); - assert(span->array->y[i] < fb->_Ymax); - } - } - } -#endif - - /* Polygon Stippling */ - if (ctx->Polygon.StippleFlag && span->primitive == GL_POLYGON) { - stipple_polygon_span(ctx, span); - } - - /* Stencil and Z testing */ - if (ctx->Stencil._Enabled || ctx->Depth.Test) { - if (!(span->arrayMask & SPAN_Z)) - _swrast_span_interpolate_z(ctx, span); - - if (ctx->Transform.DepthClamp) - _swrast_depth_clamp_span(ctx, span); - - if (ctx->Stencil._Enabled) { - if (!_swrast_stencil_and_ztest_span(ctx, span)) { - span->arrayMask = origArrayMask; - return; - } - } - else { - ASSERT(ctx->Depth.Test); - if (!_swrast_depth_test_span(ctx, span)) { - span->interpMask = origInterpMask; - span->arrayMask = origArrayMask; - return; - } - } - } - - if (ctx->Query.CurrentOcclusionObject) { - /* update count of 'passed' fragments */ - struct gl_query_object *q = ctx->Query.CurrentOcclusionObject; - GLuint i; - for (i = 0; i < span->end; i++) - q->Result += span->array->mask[i]; - } - - /* we have to wait until after occlusion to do this test */ - if (ctx->Color.IndexMask == 0) { - /* write no pixels */ - span->arrayMask = origArrayMask; - return; - } - - /* Interpolate the color indexes if needed */ - if (swrast->_FogEnabled || - ctx->Color.IndexLogicOpEnabled || - ctx->Color.IndexMask != 0xffffffff || - (span->arrayMask & SPAN_COVERAGE)) { - if (!(span->arrayMask & SPAN_INDEX) /*span->interpMask & SPAN_INDEX*/) { - interpolate_indexes(ctx, span); - } - } - - /* Fog */ - if (swrast->_FogEnabled) { - _swrast_fog_ci_span(ctx, span); - } - - /* Antialias coverage application */ - if (span->arrayMask & SPAN_COVERAGE) { - const GLfloat *coverage = span->array->coverage; - GLuint *index = span->array->index; - GLuint i; - for (i = 0; i < span->end; i++) { - ASSERT(coverage[i] < 16); - index[i] = (index[i] & ~0xf) | ((GLuint) coverage[i]); - } - } - - /* - * Write to renderbuffers - */ - { - const GLuint numBuffers = fb->_NumColorDrawBuffers; - GLuint buf; - - for (buf = 0; buf < numBuffers; buf++) { - struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[buf]; - GLuint indexSave[MAX_WIDTH]; - - ASSERT(rb->_BaseFormat == GL_COLOR_INDEX); - - if (numBuffers > 1) { - /* save indexes for second, third renderbuffer writes */ - _mesa_memcpy(indexSave, span->array->index, - span->end * sizeof(indexSave[0])); - } - - if (ctx->Color.IndexLogicOpEnabled) { - _swrast_logicop_ci_span(ctx, rb, span); - } - - if (ctx->Color.IndexMask != 0xffffffff) { - _swrast_mask_ci_span(ctx, rb, span); - } - - if (!(span->arrayMask & SPAN_INDEX) && span->indexStep == 0) { - /* all fragments have same color index */ - GLubyte index8; - GLushort index16; - GLuint index32; - void *value; - - if (rb->DataType == GL_UNSIGNED_BYTE) { - index8 = FixedToInt(span->index); - value = &index8; - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - index16 = FixedToInt(span->index); - value = &index16; - } - else { - ASSERT(rb->DataType == GL_UNSIGNED_INT); - index32 = FixedToInt(span->index); - value = &index32; - } - - if (span->arrayMask & SPAN_XY) { - rb->PutMonoValues(ctx, rb, span->end, span->array->x, - span->array->y, value, span->array->mask); - } - else { - rb->PutMonoRow(ctx, rb, span->end, span->x, span->y, - value, span->array->mask); - } - } - else { - /* each fragment is a different color */ - GLubyte index8[MAX_WIDTH]; - GLushort index16[MAX_WIDTH]; - void *values; - - if (rb->DataType == GL_UNSIGNED_BYTE) { - GLuint k; - for (k = 0; k < span->end; k++) { - index8[k] = (GLubyte) span->array->index[k]; - } - values = index8; - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - GLuint k; - for (k = 0; k < span->end; k++) { - index16[k] = (GLushort) span->array->index[k]; - } - values = index16; - } - else { - ASSERT(rb->DataType == GL_UNSIGNED_INT); - values = span->array->index; - } - - if (span->arrayMask & SPAN_XY) { - rb->PutValues(ctx, rb, span->end, - span->array->x, span->array->y, - values, span->array->mask); - } - else { - rb->PutRow(ctx, rb, span->end, span->x, span->y, - values, span->array->mask); - } - } - - if (buf + 1 < numBuffers) { - /* restore original span values */ - _mesa_memcpy(span->array->index, indexSave, - span->end * sizeof(indexSave[0])); - } - } /* for buf */ - } - - span->interpMask = origInterpMask; - span->arrayMask = origArrayMask; -} - - -/** * Add specular colors to primary colors. * Only called during fixed-function operation. * Result is float color array (FRAG_ATTRIB_COL0). @@ -1305,7 +1056,7 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) span->writeAll = GL_FALSE; } else { - _mesa_memset(span->array->mask, 1, span->end); + memset(span->array->mask, 1, span->end); span->writeAll = GL_TRUE; } @@ -1477,8 +1228,8 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) if (!multiFragOutputs && numBuffers > 1) { /* save colors for second, third renderbuffer writes */ - _mesa_memcpy(rgbaSave, span->array->rgba, - 4 * span->end * sizeof(GLchan)); + memcpy(rgbaSave, span->array->rgba, + 4 * span->end * sizeof(GLchan)); } ASSERT(rb->_BaseFormat == GL_RGBA || rb->_BaseFormat == GL_RGB); @@ -1511,8 +1262,8 @@ _swrast_write_rgba_span( GLcontext *ctx, SWspan *span) if (!multiFragOutputs && numBuffers > 1) { /* restore original span values */ - _mesa_memcpy(span->array->rgba, rgbaSave, - 4 * span->end * sizeof(GLchan)); + memcpy(span->array->rgba, rgbaSave, + 4 * span->end * sizeof(GLchan)); } } /* if rb */ @@ -1546,7 +1297,7 @@ _swrast_read_rgba_span( GLcontext *ctx, struct gl_renderbuffer *rb, if (y < 0 || y >= bufHeight || x + (GLint) n < 0 || x >= bufWidth) { /* completely above, below, or right */ /* XXX maybe leave rgba values undefined? */ - _mesa_bzero(rgba, 4 * n * sizeof(GLchan)); + memset(rgba, 0, 4 * n * sizeof(GLchan)); } else { GLint skip, length; @@ -1597,74 +1348,6 @@ _swrast_read_rgba_span( GLcontext *ctx, struct gl_renderbuffer *rb, /** - * Read CI pixels from a renderbuffer. Clipping will be done to prevent - * reading ouside the buffer's boundaries. - */ -void -_swrast_read_index_span( GLcontext *ctx, struct gl_renderbuffer *rb, - GLuint n, GLint x, GLint y, GLuint index[] ) -{ - const GLint bufWidth = (GLint) rb->Width; - const GLint bufHeight = (GLint) rb->Height; - - if (y < 0 || y >= bufHeight || x + (GLint) n < 0 || x >= bufWidth) { - /* completely above, below, or right */ - _mesa_bzero(index, n * sizeof(GLuint)); - } - else { - GLint skip, length; - if (x < 0) { - /* left edge clipping */ - skip = -x; - length = (GLint) n - skip; - if (length < 0) { - /* completely left of window */ - return; - } - if (length > bufWidth) { - length = bufWidth; - } - } - else if ((GLint) (x + n) > bufWidth) { - /* right edge clipping */ - skip = 0; - length = bufWidth - x; - if (length < 0) { - /* completely to right of window */ - return; - } - } - else { - /* no clipping */ - skip = 0; - length = (GLint) n; - } - - ASSERT(rb->GetRow); - ASSERT(rb->_BaseFormat == GL_COLOR_INDEX); - - if (rb->DataType == GL_UNSIGNED_BYTE) { - GLubyte index8[MAX_WIDTH]; - GLint i; - rb->GetRow(ctx, rb, length, x + skip, y, index8); - for (i = 0; i < length; i++) - index[skip + i] = index8[i]; - } - else if (rb->DataType == GL_UNSIGNED_SHORT) { - GLushort index16[MAX_WIDTH]; - GLint i; - rb->GetRow(ctx, rb, length, x + skip, y, index16); - for (i = 0; i < length; i++) - index[skip + i] = index16[i]; - } - else if (rb->DataType == GL_UNSIGNED_INT) { - rb->GetRow(ctx, rb, length, x + skip, y, index + skip); - } - } -} - - -/** * Wrapper for gl_renderbuffer::GetValues() which does clipping to avoid * reading values outside the buffer bounds. * We can use this for reading any format/type of renderbuffer. |