/*
* Mesa 3-D graphics library
- * Version: 6.5
+ * Version: 7.1
*
- * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 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"),
*/
-#include "glheader.h"
-#include "context.h"
-#include "colormac.h"
-#include "convolve.h"
-#include "histogram.h"
-#include "image.h"
-#include "macros.h"
-#include "imports.h"
-#include "pixel.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/colormac.h"
+#include "main/convolve.h"
+#include "main/histogram.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/pixel.h"
#include "s_context.h"
#include "s_depth.h"
-#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
#include "s_zoom.h"
-/*
+/**
* Determine if there's overlap in an image copy.
* This test also compensates for the fact that copies are done from
* bottom to top and overlaps can sometimes be handled correctly
* without making a temporary image copy.
+ * \return GL_TRUE if the regions overlap, GL_FALSE otherwise.
*/
static GLboolean
regions_overlap(GLint srcx, GLint srcy,
}
else {
/* add one pixel of slop when zooming, just to be safe */
- if ((srcx > dstx + (width * zoomX) + 1) || (srcx + width + 1 < dstx)) {
+ if (srcx > (dstx + ((zoomX > 0.0F) ? (width * zoomX + 1.0F) : 0.0F))) {
+ /* src is completely right of dest */
+ return GL_FALSE;
+ }
+ else if (srcx + width + 1.0F < dstx + ((zoomX > 0.0F) ? 0.0F : (width * zoomX))) {
+ /* src is completely left of dest */
return GL_FALSE;
}
else if ((srcy < dsty) && (srcy + height < dsty + (height * zoomY))) {
+ /* src is completely below dest */
return GL_FALSE;
}
else if ((srcy > dsty) && (srcy + height > dsty + (height * zoomY))) {
+ /* src is completely above dest */
return GL_FALSE;
}
else {
/**
- * Convert GLfloat[n][4] colors to GLchan[n][4].
- * XXX maybe move into image.c
- */
-static void
-float_span_to_chan(GLuint n, CONST GLfloat in[][4], GLchan out[][4])
-{
- GLuint i;
- for (i = 0; i < n; i++) {
- UNCLAMPED_FLOAT_TO_CHAN(out[i][RCOMP], in[i][RCOMP]);
- UNCLAMPED_FLOAT_TO_CHAN(out[i][GCOMP], in[i][GCOMP]);
- UNCLAMPED_FLOAT_TO_CHAN(out[i][BCOMP], in[i][BCOMP]);
- UNCLAMPED_FLOAT_TO_CHAN(out[i][ACOMP], in[i][ACOMP]);
- }
-}
-
-
-/**
- * Convert GLchan[n][4] colors to GLfloat[n][4].
- * XXX maybe move into image.c
- */
-static void
-chan_span_to_float(GLuint n, CONST GLchan in[][4], GLfloat out[][4])
-{
- GLuint i;
- for (i = 0; i < n; i++) {
- out[i][RCOMP] = CHAN_TO_FLOAT(in[i][RCOMP]);
- out[i][GCOMP] = CHAN_TO_FLOAT(in[i][GCOMP]);
- out[i][BCOMP] = CHAN_TO_FLOAT(in[i][BCOMP]);
- out[i][ACOMP] = CHAN_TO_FLOAT(in[i][ACOMP]);
- }
-}
-
-
-
-/*
* RGBA copypixels with convolution.
*/
static void
copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
- struct gl_renderbuffer *drawRb = NULL;
- GLboolean quick_draw;
GLint row;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- const GLuint transferOps = ctx->_ImageTransferState;
+ const GLbitfield transferOps = ctx->_ImageTransferState;
+ const GLboolean sink = (ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink)
+ || (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink);
GLfloat *dest, *tmpImage, *convImage;
- struct sw_span span;
-
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
-
- if (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (ctx->Fog.Enabled)
- _swrast_span_default_fog(ctx, &span);
-
+ SWspan span;
- if (SWRAST_CONTEXT(ctx)->_RasterMask == 0
- && !zoom
- && destx >= 0
- && destx + width <= (GLint) ctx->DrawBuffer->Width) {
- quick_draw = GL_TRUE;
- drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
- }
- else {
- quick_draw = GL_FALSE;
- }
+ INIT_SPAN(span, GL_BITMAP);
+ _swrast_span_default_attribs(ctx, &span);
+ span.arrayMask = SPAN_RGBA;
+ span.arrayAttribs = FRAG_BIT_COL0;
/* allocate space for GLfloat image */
tmpImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
return;
}
- /* read source image */
+ /* read source image as float/RGBA */
dest = tmpImage;
for (row = 0; row < height; row++) {
- GLchan rgba[MAX_WIDTH][4];
- /* Read GLchan and convert to GLfloat */
_swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, srcy + row, rgba);
- chan_span_to_float(width, (CONST GLchan (*)[4]) rgba,
- (GLfloat (*)[4]) dest);
+ width, srcx, srcy + row, GL_FLOAT, dest);
dest += 4 * width;
}
width, rgba);
}
- /* write the new image */
- for (row = 0; row < height; row++) {
- const GLfloat *src = convImage + row * width * 4;
- GLint dy;
+ if (!sink) {
+ /* write the new image */
+ for (row = 0; row < height; row++) {
+ const GLfloat *src = convImage + row * width * 4;
+ GLfloat *rgba = (GLfloat *) span.array->attribs[FRAG_ATTRIB_COL0];
- /* convert floats back to chan */
- float_span_to_chan(width, (const GLfloat (*)[4]) src, span.array->rgba);
-
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
- span.end = width;
- _swrast_pixel_texture(ctx, &span);
- }
+ /* copy convolved colors into span array */
+ _mesa_memcpy(rgba, src, width * 4 * sizeof(GLfloat));
- /* write row to framebuffer */
-
- dy = desty + row;
- if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
- drawRb->PutRow(ctx, drawRb, width, destx, dy, span.array->rgba, NULL);
- }
- else {
+ /* write span */
span.x = destx;
- span.y = dy;
+ span.y = desty + row;
span.end = width;
+ span.array->ChanType = GL_FLOAT;
if (zoom) {
- _swrast_write_zoomed_rgba_span(ctx, destx, desty, &span,
- (CONST GLchan (*)[4])span.array->rgba);
+ _swrast_write_zoomed_rgba_span(ctx, destx, desty, &span, rgba);
}
else {
_swrast_write_rgba_span(ctx, &span);
}
}
+ /* restore this */
+ span.array->ChanType = CHAN_TYPE;
}
_mesa_free(convImage);
}
-/*
+/**
* RGBA copypixels
*/
static void
copy_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
- struct gl_renderbuffer *drawRb;
- GLchan *tmpImage,*p;
- GLboolean quick_draw;
- GLint sy, dy, stepy, j;
+ GLfloat *tmpImage, *p;
+ GLint sy, dy, stepy, row;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
GLint overlapping;
- const GLuint transferOps = ctx->_ImageTransferState;
- struct sw_span span;
+ GLuint transferOps = ctx->_ImageTransferState;
+ SWspan span;
if (!ctx->ReadBuffer->_ColorReadBuffer) {
/* no readbuffer - OK */
return;
}
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
-
if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) {
copy_conv_rgba_pixels(ctx, srcx, srcy, width, height, destx, desty);
return;
}
+ else if (ctx->Pixel.Convolution1DEnabled) {
+ /* make sure we don't apply 1D convolution */
+ transferOps &= ~(IMAGE_CONVOLUTION_BIT |
+ IMAGE_POST_CONVOLUTION_SCALE_BIAS);
+ }
+
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
/* Determine if copy should be done bottom-to-top or top-to-bottom */
- if (srcy < desty) {
+ if (!overlapping && srcy < desty) {
/* top-down max-to-min */
sy = srcy + height - 1;
dy = desty + height - 1;
stepy = 1;
}
- if (ctx->DrawBuffer == ctx->ReadBuffer) {
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- }
- else {
- overlapping = GL_FALSE;
- }
-
- if (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (ctx->Fog.Enabled)
- _swrast_span_default_fog(ctx, &span);
-
- if (SWRAST_CONTEXT(ctx)->_RasterMask == 0
- && !zoom
- && destx >= 0
- && destx + width <= (GLint) ctx->DrawBuffer->Width) {
- quick_draw = GL_TRUE;
- drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
- }
- else {
- quick_draw = GL_FALSE;
- drawRb = NULL;
- }
+ INIT_SPAN(span, GL_BITMAP);
+ _swrast_span_default_attribs(ctx, &span);
+ span.arrayMask = SPAN_RGBA;
+ span.arrayAttribs = FRAG_BIT_COL0; /* we'll fill in COL0 attrib values */
if (overlapping) {
- GLint ssy = sy;
- tmpImage = (GLchan *) _mesa_malloc(width * height * sizeof(GLchan) * 4);
+ tmpImage = (GLfloat *) _mesa_malloc(width * height * sizeof(GLfloat) * 4);
if (!tmpImage) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
}
- /* read the source image */
+ /* read the source image as RGBA/float */
p = tmpImage;
- for (j = 0; j < height; j++, ssy += stepy) {
+ for (row = 0; row < height; row++) {
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, ssy, (GLchan (*)[4]) p );
+ width, srcx, sy + row, GL_FLOAT, p );
p += width * 4;
}
p = tmpImage;
p = NULL;
}
- for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
- /* Get source pixels */
+ ASSERT(width < MAX_WIDTH);
+
+ for (row = 0; row < height; row++, sy += stepy, dy += stepy) {
+ GLvoid *rgba = span.array->attribs[FRAG_ATTRIB_COL0];
+
+ /* Get row/span of source pixels */
if (overlapping) {
/* get from buffered image */
- ASSERT(width < MAX_WIDTH);
- MEMCPY(span.array->rgba, p, width * sizeof(GLchan) * 4);
+ _mesa_memcpy(rgba, p, width * sizeof(GLfloat) * 4);
p += width * 4;
}
else {
/* get from framebuffer */
- ASSERT(width < MAX_WIDTH);
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, sy, span.array->rgba );
+ width, srcx, sy, GL_FLOAT, rgba );
}
if (transferOps) {
- GLfloat rgbaFloat[MAX_WIDTH][4];
- /* convert to float, transfer, convert back to chan */
- chan_span_to_float(width, (CONST GLchan (*)[4]) span.array->rgba,
- rgbaFloat);
- _mesa_apply_rgba_transfer_ops(ctx, transferOps, width, rgbaFloat);
- float_span_to_chan(width, (CONST GLfloat (*)[4]) rgbaFloat,
- span.array->rgba);
- }
-
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
- span.end = width;
- _swrast_pixel_texture(ctx, &span);
+ _mesa_apply_rgba_transfer_ops(ctx, transferOps, width,
+ (GLfloat (*)[4]) rgba);
}
/* Write color span */
- if (quick_draw && dy >= 0 && dy < (GLint) ctx->DrawBuffer->Height) {
- drawRb->PutRow(ctx, drawRb, width, destx, dy, span.array->rgba, NULL);
+ span.x = destx;
+ span.y = dy;
+ span.end = width;
+ span.array->ChanType = GL_FLOAT;
+ if (zoom) {
+ _swrast_write_zoomed_rgba_span(ctx, destx, desty, &span, rgba);
}
else {
- span.x = destx;
- span.y = dy;
- span.end = width;
- if (zoom) {
- _swrast_write_zoomed_rgba_span(ctx, destx, desty, &span,
- (CONST GLchan (*)[4]) span.array->rgba);
- }
- else {
- _swrast_write_rgba_span(ctx, &span);
- }
+ _swrast_write_rgba_span(ctx, &span);
}
}
+ span.array->ChanType = CHAN_TYPE; /* restore */
+
if (overlapping)
_mesa_free(tmpImage);
}
GLint sy, dy, stepy;
GLint j;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- const GLboolean shift_or_offset = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
GLint overlapping;
- struct sw_span span;
+ SWspan span;
if (!ctx->ReadBuffer->_ColorReadBuffer) {
/* no readbuffer - OK */
return;
}
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
+ INIT_SPAN(span, GL_BITMAP);
+ _swrast_span_default_attribs(ctx, &span);
+ span.arrayMask = SPAN_INDEX;
+
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
/* Determine if copy should be bottom-to-top or top-to-bottom */
- if (srcy<desty) {
+ if (!overlapping && srcy < desty) {
/* top-down max-to-min */
sy = srcy + height - 1;
dy = desty + height - 1;
stepy = 1;
}
- if (ctx->DrawBuffer == ctx->ReadBuffer) {
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- }
- else {
- overlapping = GL_FALSE;
- }
-
- if (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (ctx->Fog.Enabled)
- _swrast_span_default_fog(ctx, &span);
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
/* Get color indexes */
if (overlapping) {
- MEMCPY(span.array->index, p, width * sizeof(GLuint));
+ _mesa_memcpy(span.array->index, p, width * sizeof(GLuint));
p += width;
}
else {
width, srcx, sy, span.array->index );
}
- /* Apply shift, offset, look-up table */
- if (shift_or_offset) {
- _mesa_shift_and_offset_ci( ctx, width, span.array->index );
- }
- if (ctx->Pixel.MapColorFlag) {
- _mesa_map_ci( ctx, width, span.array->index );
- }
+ if (ctx->_ImageTransferState)
+ _mesa_apply_ci_transfer_ops(ctx, ctx->_ImageTransferState,
+ width, span.array->index);
/* write color indexes */
span.x = destx;
}
+/**
+ * Convert floating point Z values to integer Z values with pixel transfer's
+ * Z scale and bias.
+ */
+static void
+scale_and_bias_z(GLcontext *ctx, GLuint width,
+ const GLfloat depth[], GLuint z[])
+{
+ const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
+ GLuint i;
+
+ if (depthMax <= 0xffffff &&
+ ctx->Pixel.DepthScale == 1.0 &&
+ ctx->Pixel.DepthBias == 0.0) {
+ /* no scale or bias and no clamping and no worry of overflow */
+ const GLfloat depthMaxF = ctx->DrawBuffer->_DepthMaxF;
+ for (i = 0; i < width; i++) {
+ z[i] = (GLuint) (depth[i] * depthMaxF);
+ }
+ }
+ else {
+ /* need to be careful with overflow */
+ const GLdouble depthMaxF = ctx->DrawBuffer->_DepthMaxF;
+ for (i = 0; i < width; i++) {
+ GLdouble d = depth[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
+ d = CLAMP(d, 0.0, 1.0) * depthMaxF;
+ if (d >= depthMaxF)
+ z[i] = depthMax;
+ else
+ z[i] = (GLuint) d;
+ }
+ }
+}
+
+
/*
* TODO: Optimize!!!!
GLint destx, GLint desty )
{
struct gl_framebuffer *fb = ctx->ReadBuffer;
- struct gl_renderbuffer *readRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
- const GLfloat depthMax = fb->_DepthMaxF;
+ struct gl_renderbuffer *readRb = fb->_DepthBuffer;
GLfloat *p, *tmpImage;
GLint sy, dy, stepy;
- GLint i, j;
+ GLint j;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
GLint overlapping;
- struct sw_span span;
+ SWspan span;
if (!readRb) {
/* no readbuffer - OK */
return;
}
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
+ INIT_SPAN(span, GL_BITMAP);
+ _swrast_span_default_attribs(ctx, &span);
+ span.arrayMask = SPAN_Z;
+
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
/* Determine if copy should be bottom-to-top or top-to-bottom */
- if (srcy<desty) {
+ if (!overlapping && srcy < desty) {
/* top-down max-to-min */
sy = srcy + height - 1;
dy = desty + height - 1;
stepy = 1;
}
- if (ctx->DrawBuffer == ctx->ReadBuffer) {
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- }
- else {
- overlapping = GL_FALSE;
- }
-
- _swrast_span_default_color(ctx, &span);
- if (ctx->Fog.Enabled)
- _swrast_span_default_fog(ctx, &span);
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLfloat *) _mesa_malloc(width * height * sizeof(GLfloat));
GLfloat depth[MAX_WIDTH];
/* get depth values */
if (overlapping) {
- MEMCPY(depth, p, width * sizeof(GLfloat));
+ _mesa_memcpy(depth, p, width * sizeof(GLfloat));
p += width;
}
else {
}
/* apply scale and bias */
- for (i = 0; i < width; i++) {
- GLfloat d = depth[i] * ctx->Pixel.DepthScale + ctx->Pixel.DepthBias;
- span.array->z[i] = (GLuint) (CLAMP(d, 0.0F, 1.0F) * depthMax);
- }
+ scale_and_bias_z(ctx, width, depth, span.array->z);
/* write depth values */
span.x = destx;
span.end = width;
if (fb->Visual.rgbMode) {
if (zoom)
- _swrast_write_zoomed_rgba_span(ctx, destx, desty, &span,
- (const GLchan (*)[4]) span.array->rgba);
+ _swrast_write_zoomed_depth_span(ctx, destx, desty, &span);
else
_swrast_write_rgba_span(ctx, &span);
}
else {
if (zoom)
- _swrast_write_zoomed_index_span(ctx, destx, desty, &span);
+ _swrast_write_zoomed_depth_span(ctx, destx, desty, &span);
else
_swrast_write_index_span(ctx, &span);
}
GLint destx, GLint desty )
{
struct gl_framebuffer *fb = ctx->ReadBuffer;
- struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ struct gl_renderbuffer *rb = fb->_StencilBuffer;
GLint sy, dy, stepy;
GLint j;
GLstencil *p, *tmpImage;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- const GLboolean shift_or_offset = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
GLint overlapping;
if (!rb) {
return;
}
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
+
/* Determine if copy should be bottom-to-top or top-to-bottom */
- if (srcy < desty) {
+ if (!overlapping && srcy < desty) {
/* top-down max-to-min */
sy = srcy + height - 1;
dy = desty + height - 1;
stepy = 1;
}
- if (ctx->DrawBuffer == ctx->ReadBuffer) {
- overlapping = regions_overlap(srcx, srcy, destx, desty, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- }
- else {
- overlapping = GL_FALSE;
- }
-
if (overlapping) {
GLint ssy = sy;
tmpImage = (GLstencil *) _mesa_malloc(width * height * sizeof(GLstencil));
/* Get stencil values */
if (overlapping) {
- MEMCPY(stencil, p, width * sizeof(GLstencil));
+ _mesa_memcpy(stencil, p, width * sizeof(GLstencil));
p += width;
}
else {
_swrast_read_stencil_span( ctx, rb, width, srcx, sy, stencil );
}
- /* Apply shift, offset, look-up table */
- if (shift_or_offset) {
- _mesa_shift_and_offset_stencil( ctx, width, stencil );
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil( ctx, width, stencil );
- }
+ _mesa_apply_stencil_transfer_ops(ctx, width, stencil);
/* Write stencil values */
if (zoom) {
/**
- * This isn't terribly efficient. If a drivef really has combined
+ * This isn't terribly efficient. If a driver really has combined
* depth/stencil buffers the driver should implement an optimized
* CopyPixels function.
*/
const GLfloat depthScale = ctx->DrawBuffer->_DepthMaxF;
const GLuint stencilMask = ctx->Stencil.WriteMask[0];
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- const GLboolean shiftOrOffset
- = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
const GLboolean scaleOrBias
= ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
GLint overlapping;
- depthDrawRb = ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
- depthReadRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
- stencilReadRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+ depthDrawRb = ctx->DrawBuffer->_DepthBuffer;
+ depthReadRb = ctx->ReadBuffer->_DepthBuffer;
+ stencilReadRb = ctx->ReadBuffer->_StencilBuffer;
ASSERT(depthDrawRb);
ASSERT(depthReadRb);
ASSERT(stencilReadRb);
+ if (ctx->DrawBuffer == ctx->ReadBuffer) {
+ overlapping = regions_overlap(srcX, srcY, destX, destY, width, height,
+ ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
+ }
+ else {
+ overlapping = GL_FALSE;
+ }
+
/* Determine if copy should be bottom-to-top or top-to-bottom */
- if (srcY < destY) {
+ if (!overlapping && srcY < destY) {
/* top-down max-to-min */
sy = srcY + height - 1;
dy = destY + height - 1;
stepy = 1;
}
- if (ctx->DrawBuffer == ctx->ReadBuffer) {
- overlapping = regions_overlap(srcX, srcY, destX, destY, width, height,
- ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
- }
- else {
- overlapping = GL_FALSE;
- }
-
if (overlapping) {
GLint ssy = sy;
width, srcX, sy, stencil);
}
- /* Apply shift, offset, look-up table */
- if (shiftOrOffset) {
- _mesa_shift_and_offset_stencil(ctx, width, stencil);
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil(ctx, width, stencil);
- }
+ _mesa_apply_stencil_transfer_ops(ctx, width, stencil);
/* Write values */
if (zoom) {
}
+
+/**
+ * Try to do a fast copy pixels.
+ */
+static GLboolean
+fast_copy_pixels(GLcontext *ctx,
+ GLint srcX, GLint srcY, GLsizei width, GLsizei height,
+ GLint dstX, GLint dstY, GLenum type)
+{
+ struct gl_framebuffer *srcFb = ctx->ReadBuffer;
+ struct gl_framebuffer *dstFb = ctx->DrawBuffer;
+ struct gl_renderbuffer *srcRb, *dstRb;
+ GLint row, yStep;
+
+ if (SWRAST_CONTEXT(ctx)->_RasterMask != 0x0 ||
+ ctx->Pixel.ZoomX != 1.0F ||
+ ctx->Pixel.ZoomY != 1.0F ||
+ ctx->_ImageTransferState) {
+ /* can't handle these */
+ return GL_FALSE;
+ }
+
+ if (type == GL_COLOR) {
+ if (dstFb->_NumColorDrawBuffers != 1)
+ return GL_FALSE;
+ srcRb = srcFb->_ColorReadBuffer;
+ dstRb = dstFb->_ColorDrawBuffers[0];
+ }
+ else if (type == GL_STENCIL) {
+ srcRb = srcFb->_StencilBuffer;
+ dstRb = dstFb->_StencilBuffer;
+ }
+ else if (type == GL_DEPTH) {
+ srcRb = srcFb->_DepthBuffer;
+ dstRb = dstFb->_DepthBuffer;
+ }
+ else {
+ ASSERT(type == GL_DEPTH_STENCIL_EXT);
+ /* XXX correct? */
+ srcRb = srcFb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ dstRb = dstFb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ }
+
+ /* src and dst renderbuffers must be same format and type */
+ if (!srcRb || !dstRb ||
+ srcRb->DataType != dstRb->DataType ||
+ srcRb->_BaseFormat != dstRb->_BaseFormat) {
+ return GL_FALSE;
+ }
+
+ /* clipping not supported */
+ if (srcX < 0 || srcX + width > (GLint) srcFb->Width ||
+ srcY < 0 || srcY + height > (GLint) srcFb->Height ||
+ dstX < dstFb->_Xmin || dstX + width > dstFb->_Xmax ||
+ dstY < dstFb->_Ymin || dstY + height > dstFb->_Ymax) {
+ return GL_FALSE;
+ }
+
+ /* overlapping src/dst doesn't matter, just determine Y direction */
+ if (srcY < dstY) {
+ /* top-down max-to-min */
+ srcY = srcY + height - 1;
+ dstY = dstY + height - 1;
+ yStep = -1;
+ }
+ else {
+ /* bottom-up min-to-max */
+ yStep = 1;
+ }
+
+ for (row = 0; row < height; row++) {
+ GLuint temp[MAX_WIDTH][4];
+ srcRb->GetRow(ctx, srcRb, width, srcX, srcY, temp);
+ dstRb->PutRow(ctx, dstRb, width, dstX, dstY, temp, NULL);
+ srcY += yStep;
+ dstY += yStep;
+ }
+
+ return GL_TRUE;
+}
+
+
/**
* Do software-based glCopyPixels.
* By time we get here, all parameters will have been error-checked.
if (swrast->NewState)
_swrast_validate_derived( ctx );
- switch (type) {
- case GL_COLOR:
- if (ctx->Visual.rgbMode) {
- copy_rgba_pixels( ctx, srcx, srcy, width, height, destx, desty );
+ if (!fast_copy_pixels(ctx, srcx, srcy, width, height, destx, desty, type)) {
+ switch (type) {
+ case GL_COLOR:
+ if (ctx->Visual.rgbMode) {
+ copy_rgba_pixels( ctx, srcx, srcy, width, height, destx, desty );
+ }
+ else {
+ copy_ci_pixels( ctx, srcx, srcy, width, height, destx, desty );
+ }
+ break;
+ case GL_DEPTH:
+ copy_depth_pixels( ctx, srcx, srcy, width, height, destx, desty );
+ break;
+ case GL_STENCIL:
+ copy_stencil_pixels( ctx, srcx, srcy, width, height, destx, desty );
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ copy_depth_stencil_pixels(ctx, srcx, srcy, width, height, destx, desty);
+ break;
+ default:
+ _mesa_problem(ctx, "unexpected type in _swrast_CopyPixels");
}
- else {
- copy_ci_pixels( ctx, srcx, srcy, width, height, destx, desty );
- }
- break;
- case GL_DEPTH:
- copy_depth_pixels( ctx, srcx, srcy, width, height, destx, desty );
- break;
- case GL_STENCIL:
- copy_stencil_pixels( ctx, srcx, srcy, width, height, destx, desty );
- break;
- case GL_DEPTH_STENCIL_EXT:
- copy_depth_stencil_pixels(ctx, srcx, srcy, width, height, destx, desty);
- break;
- default:
- _mesa_problem(ctx, "unexpected type in _swrast_CopyPixels");
}
RENDER_FINISH(swrast,ctx);
projects / mesa.git / blobdiff