/*
* Mesa 3-D graphics library
- * Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 "main/glheader.h"
#include "main/context.h"
-#include "main/colormac.h"
#include "main/condrender.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 "main/blit.h"
+#include "main/pixeltransfer.h"
+
#include "s_context.h"
#include "s_depth.h"
GLint width, GLint height,
GLfloat zoomX, GLfloat zoomY)
{
- if (zoomX == 1.0 && zoomY == 1.0) {
- /* no zoom */
- if (srcx >= dstx + width || (srcx + width <= dstx)) {
- return GL_FALSE;
- }
- else if (srcy < dsty) { /* this is OK */
- return GL_FALSE;
- }
- else if (srcy > dsty + height) {
- return GL_FALSE;
- }
- else {
- return GL_TRUE;
- }
+ if (zoomX == 1.0F && zoomY == 1.0F) {
+ return _mesa_regions_overlap(srcx, srcy, srcx + width, srcy + height,
+ dstx, dsty, dstx + width, dsty + height);
}
else {
/* add one pixel of slop when zooming, just to be safe */
}
-/**
- * RGBA copypixels with convolution.
- */
-static void
-copy_conv_rgba_pixels(GLcontext *ctx, GLint srcx, GLint srcy,
- GLint width, GLint height, GLint destx, GLint desty)
-{
- GLint row;
- const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- const GLbitfield transferOps = ctx->_ImageTransferState;
- const GLboolean sink = (ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink)
- || (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink);
- GLfloat *dest, *tmpImage, *convImage;
- SWspan span;
-
- 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));
- if (!tmpImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
- return;
- }
- convImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
- if (!convImage) {
- _mesa_free(tmpImage);
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
- return;
- }
-
- /* read source image as float/RGBA */
- dest = tmpImage;
- for (row = 0; row < height; row++) {
- _swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, srcy + row, GL_FLOAT, dest);
- dest += 4 * width;
- }
-
- /* do the image transfer ops which preceed convolution */
- for (row = 0; row < height; row++) {
- GLfloat (*rgba)[4] = (GLfloat (*)[4]) (tmpImage + row * width * 4);
- _mesa_apply_rgba_transfer_ops(ctx,
- transferOps & IMAGE_PRE_CONVOLUTION_BITS,
- width, rgba);
- }
-
- /* do convolution */
- if (ctx->Pixel.Convolution2DEnabled) {
- _mesa_convolve_2d_image(ctx, &width, &height, tmpImage, convImage);
- }
- else {
- ASSERT(ctx->Pixel.Separable2DEnabled);
- _mesa_convolve_sep_image(ctx, &width, &height, tmpImage, convImage);
- }
- _mesa_free(tmpImage);
-
- /* do remaining post-convolution image transfer ops */
- for (row = 0; row < height; row++) {
- GLfloat (*rgba)[4] = (GLfloat (*)[4]) (convImage + row * width * 4);
- _mesa_apply_rgba_transfer_ops(ctx,
- transferOps & IMAGE_POST_CONVOLUTION_BITS,
- width, rgba);
- }
-
- 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];
-
- /* copy convolved colors into span array */
- _mesa_memcpy(rgba, src, width * 4 * sizeof(GLfloat));
-
- /* write span */
- span.x = destx;
- span.y = desty + row;
- span.end = width;
- span.array->ChanType = GL_FLOAT;
- if (zoom) {
- _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,
+copy_rgba_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
GLint width, GLint height, GLint destx, GLint desty)
{
GLfloat *tmpImage, *p;
return;
}
- 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);
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 */
+ span.arrayAttribs = VARYING_BIT_COL0; /* we'll fill in COL0 attrib values */
if (overlapping) {
- tmpImage = (GLfloat *) _mesa_malloc(width * height * sizeof(GLfloat) * 4);
+ tmpImage = malloc(width * height * sizeof(GLfloat) * 4);
if (!tmpImage) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
p = tmpImage;
for (row = 0; row < height; row++) {
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, sy + row, GL_FLOAT, p );
+ width, srcx, sy + row, p );
p += width * 4;
}
p = tmpImage;
p = NULL;
}
- ASSERT(width < MAX_WIDTH);
+ assert(width < SWRAST_MAX_WIDTH);
for (row = 0; row < height; row++, sy += stepy, dy += stepy) {
- GLvoid *rgba = span.array->attribs[FRAG_ATTRIB_COL0];
+ GLvoid *rgba = span.array->attribs[VARYING_SLOT_COL0];
/* Get row/span of source pixels */
if (overlapping) {
/* get from buffered image */
- _mesa_memcpy(rgba, p, width * sizeof(GLfloat) * 4);
+ memcpy(rgba, p, width * sizeof(GLfloat) * 4);
p += width * 4;
}
else {
/* get from framebuffer */
_swrast_read_rgba_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, sy, GL_FLOAT, rgba );
+ width, srcx, sy, rgba );
}
if (transferOps) {
span.array->ChanType = CHAN_TYPE; /* restore */
if (overlapping)
- _mesa_free(tmpImage);
-}
-
-
-static void
-copy_ci_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
- GLint width, GLint height,
- GLint destx, GLint desty )
-{
- GLuint *tmpImage,*p;
- GLint sy, dy, stepy;
- GLint j;
- const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
- GLint overlapping;
- SWspan span;
-
- if (!ctx->ReadBuffer->_ColorReadBuffer) {
- /* no readbuffer - OK */
- return;
- }
-
- 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 (!overlapping && srcy < desty) {
- /* top-down max-to-min */
- sy = srcy + height - 1;
- dy = desty + height - 1;
- stepy = -1;
- }
- else {
- /* bottom-up min-to-max */
- sy = srcy;
- dy = desty;
- stepy = 1;
- }
-
- if (overlapping) {
- GLint ssy = sy;
- tmpImage = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
- if (!tmpImage) {
- _mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
- return;
- }
- /* read the image */
- p = tmpImage;
- for (j = 0; j < height; j++, ssy += stepy) {
- _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, ssy, p );
- p += width;
- }
- p = tmpImage;
- }
- else {
- tmpImage = NULL; /* silence compiler warning */
- p = NULL;
- }
-
- for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
- /* Get color indexes */
- if (overlapping) {
- _mesa_memcpy(span.array->index, p, width * sizeof(GLuint));
- p += width;
- }
- else {
- _swrast_read_index_span( ctx, ctx->ReadBuffer->_ColorReadBuffer,
- width, srcx, sy, span.array->index );
- }
-
- if (ctx->_ImageTransferState)
- _mesa_apply_ci_transfer_ops(ctx, ctx->_ImageTransferState,
- width, span.array->index);
-
- /* write color indexes */
- span.x = destx;
- span.y = dy;
- span.end = width;
- if (zoom)
- _swrast_write_zoomed_index_span(ctx, destx, desty, &span);
- else
- _swrast_write_index_span(ctx, &span);
- }
-
- if (overlapping)
- _mesa_free(tmpImage);
+ free(tmpImage);
}
* Z scale and bias.
*/
static void
-scale_and_bias_z(GLcontext *ctx, GLuint width,
+scale_and_bias_z(struct gl_context *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) {
+ ctx->Pixel.DepthScale == 1.0F &&
+ ctx->Pixel.DepthBias == 0.0F) {
/* no scale or bias and no clamping and no worry of overflow */
const GLfloat depthMaxF = ctx->DrawBuffer->_DepthMaxF;
for (i = 0; i < width; i++) {
* TODO: Optimize!!!!
*/
static void
-copy_depth_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
+copy_depth_pixels( struct gl_context *ctx, GLint srcx, GLint srcy,
GLint width, GLint height,
GLint destx, GLint desty )
{
struct gl_framebuffer *fb = ctx->ReadBuffer;
- struct gl_renderbuffer *readRb = fb->_DepthBuffer;
- GLfloat *p, *tmpImage;
+ struct gl_renderbuffer *readRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ GLfloat *p, *tmpImage, *depth;
GLint sy, dy, stepy;
GLint j;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
if (overlapping) {
GLint ssy = sy;
- tmpImage = (GLfloat *) _mesa_malloc(width * height * sizeof(GLfloat));
+ tmpImage = malloc(width * height * sizeof(GLfloat));
if (!tmpImage) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
p = NULL;
}
+ depth = malloc(width * sizeof(GLfloat));
+ if (!depth) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels()");
+ goto end;
+ }
+
for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
- GLfloat depth[MAX_WIDTH];
/* get depth values */
if (overlapping) {
- _mesa_memcpy(depth, p, width * sizeof(GLfloat));
+ memcpy(depth, p, width * sizeof(GLfloat));
p += width;
}
else {
span.x = destx;
span.y = dy;
span.end = width;
- if (fb->Visual.rgbMode) {
- if (zoom)
- _swrast_write_zoomed_depth_span(ctx, destx, desty, &span);
- else
- _swrast_write_rgba_span(ctx, &span);
- }
- else {
- if (zoom)
- _swrast_write_zoomed_depth_span(ctx, destx, desty, &span);
- else
- _swrast_write_index_span(ctx, &span);
- }
+ if (zoom)
+ _swrast_write_zoomed_depth_span(ctx, destx, desty, &span);
+ else
+ _swrast_write_rgba_span(ctx, &span);
}
+ free(depth);
+
+end:
if (overlapping)
- _mesa_free(tmpImage);
+ free(tmpImage);
}
static void
-copy_stencil_pixels( GLcontext *ctx, GLint srcx, GLint srcy,
+copy_stencil_pixels( struct gl_context *ctx, GLint srcx, GLint srcy,
GLint width, GLint height,
GLint destx, GLint desty )
{
struct gl_framebuffer *fb = ctx->ReadBuffer;
- struct gl_renderbuffer *rb = fb->_StencilBuffer;
+ struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
GLint sy, dy, stepy;
GLint j;
- GLstencil *p, *tmpImage;
+ GLubyte *p, *tmpImage, *stencil;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F;
GLint overlapping;
if (overlapping) {
GLint ssy = sy;
- tmpImage = (GLstencil *) _mesa_malloc(width * height * sizeof(GLstencil));
+ tmpImage = malloc(width * height * sizeof(GLubyte));
if (!tmpImage) {
_mesa_error( ctx, GL_OUT_OF_MEMORY, "glCopyPixels" );
return;
p = NULL;
}
- for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
- GLstencil stencil[MAX_WIDTH];
+ stencil = malloc(width * sizeof(GLubyte));
+ if (!stencil) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels()");
+ goto end;
+ }
+ for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
/* Get stencil values */
if (overlapping) {
- _mesa_memcpy(stencil, p, width * sizeof(GLstencil));
+ memcpy(stencil, p, width * sizeof(GLubyte));
p += width;
}
else {
}
}
- if (overlapping)
- _mesa_free(tmpImage);
-}
-
-
-/**
- * This isn't terribly efficient. If a driver really has combined
- * depth/stencil buffers the driver should implement an optimized
- * CopyPixels function.
- */
-static void
-copy_depth_stencil_pixels(GLcontext *ctx,
- const GLint srcX, const GLint srcY,
- const GLint width, const GLint height,
- const GLint destX, const GLint destY)
-{
- struct gl_renderbuffer *stencilReadRb, *depthReadRb, *depthDrawRb;
- GLint sy, dy, stepy;
- GLint j;
- GLstencil *tempStencilImage = NULL, *stencilPtr = NULL;
- GLfloat *tempDepthImage = NULL, *depthPtr = NULL;
- 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 scaleOrBias
- = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
- GLint overlapping;
-
- 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 (!overlapping && srcY < destY) {
- /* top-down max-to-min */
- sy = srcY + height - 1;
- dy = destY + height - 1;
- stepy = -1;
- }
- else {
- /* bottom-up min-to-max */
- sy = srcY;
- dy = destY;
- stepy = 1;
- }
-
- if (overlapping) {
- GLint ssy = sy;
-
- if (stencilMask != 0x0) {
- tempStencilImage
- = (GLstencil *) _mesa_malloc(width * height * sizeof(GLstencil));
- if (!tempStencilImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
- return;
- }
-
- /* get copy of stencil pixels */
- stencilPtr = tempStencilImage;
- for (j = 0; j < height; j++, ssy += stepy) {
- _swrast_read_stencil_span(ctx, stencilReadRb,
- width, srcX, ssy, stencilPtr);
- stencilPtr += width;
- }
- stencilPtr = tempStencilImage;
- }
-
- if (ctx->Depth.Mask) {
- tempDepthImage
- = (GLfloat *) _mesa_malloc(width * height * sizeof(GLfloat));
- if (!tempDepthImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
- _mesa_free(tempStencilImage);
- return;
- }
-
- /* get copy of depth pixels */
- depthPtr = tempDepthImage;
- for (j = 0; j < height; j++, ssy += stepy) {
- _swrast_read_depth_span_float(ctx, depthReadRb,
- width, srcX, ssy, depthPtr);
- depthPtr += width;
- }
- depthPtr = tempDepthImage;
- }
- }
-
- for (j = 0; j < height; j++, sy += stepy, dy += stepy) {
- if (stencilMask != 0x0) {
- GLstencil stencil[MAX_WIDTH];
-
- /* Get stencil values */
- if (overlapping) {
- _mesa_memcpy(stencil, stencilPtr, width * sizeof(GLstencil));
- stencilPtr += width;
- }
- else {
- _swrast_read_stencil_span(ctx, stencilReadRb,
- width, srcX, sy, stencil);
- }
-
- _mesa_apply_stencil_transfer_ops(ctx, width, stencil);
-
- /* Write values */
- if (zoom) {
- _swrast_write_zoomed_stencil_span(ctx, destX, destY, width,
- destX, dy, stencil);
- }
- else {
- _swrast_write_stencil_span( ctx, width, destX, dy, stencil );
- }
- }
+ free(stencil);
- if (ctx->Depth.Mask) {
- GLfloat depth[MAX_WIDTH];
- GLuint zVals32[MAX_WIDTH];
- GLushort zVals16[MAX_WIDTH];
- GLvoid *zVals;
- GLuint zBytes;
-
- /* get depth values */
- if (overlapping) {
- _mesa_memcpy(depth, depthPtr, width * sizeof(GLfloat));
- depthPtr += width;
- }
- else {
- _swrast_read_depth_span_float(ctx, depthReadRb,
- width, srcX, sy, depth);
- }
-
- /* scale & bias */
- if (scaleOrBias) {
- _mesa_scale_and_bias_depth(ctx, width, depth);
- }
- /* convert to integer Z values */
- if (depthDrawRb->DataType == GL_UNSIGNED_SHORT) {
- GLint k;
- for (k = 0; k < width; k++)
- zVals16[k] = (GLushort) (depth[k] * depthScale);
- zVals = zVals16;
- zBytes = 2;
- }
- else {
- GLint k;
- for (k = 0; k < width; k++)
- zVals32[k] = (GLuint) (depth[k] * depthScale);
- zVals = zVals32;
- zBytes = 4;
- }
-
- /* Write values */
- if (zoom) {
- _swrast_write_zoomed_z_span(ctx, destX, destY, width,
- destX, dy, zVals);
- }
- else {
- _swrast_put_row(ctx, depthDrawRb, width, destX, dy, zVals, zBytes);
- }
- }
- }
-
- if (tempStencilImage)
- _mesa_free(tempStencilImage);
-
- if (tempDepthImage)
- _mesa_free(tempDepthImage);
+end:
+ if (overlapping)
+ free(tmpImage);
}
-
/**
- * Try to do a fast copy pixels.
+ * Try to do a fast 1:1 blit with memcpy.
+ * \return GL_TRUE if successful, GL_FALSE otherwise.
*/
-static GLboolean
-fast_copy_pixels(GLcontext *ctx,
- GLint srcX, GLint srcY, GLsizei width, GLsizei height,
- GLint dstX, GLint dstY, GLenum type)
+GLboolean
+swrast_fast_copy_pixels(struct gl_context *ctx,
+ struct gl_framebuffer *srcFb,
+ struct gl_framebuffer *dstFb,
+ 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;
- }
+ GLint row;
+ GLuint pixelBytes, widthInBytes;
+ GLubyte *srcMap, *dstMap;
+ GLint srcRowStride, dstRowStride;
if (type == GL_COLOR) {
if (dstFb->_NumColorDrawBuffers != 1)
dstRb = dstFb->_ColorDrawBuffers[0];
}
else if (type == GL_STENCIL) {
- srcRb = srcFb->_StencilBuffer;
- dstRb = dstFb->_StencilBuffer;
+ srcRb = srcFb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ dstRb = dstFb->Attachment[BUFFER_STENCIL].Renderbuffer;
}
else if (type == GL_DEPTH) {
- srcRb = srcFb->_DepthBuffer;
- dstRb = dstFb->_DepthBuffer;
+ srcRb = srcFb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ dstRb = dstFb->Attachment[BUFFER_DEPTH].Renderbuffer;
}
else {
- ASSERT(type == GL_DEPTH_STENCIL_EXT);
+ 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) {
+ /* src and dst renderbuffers must be same format */
+ if (!srcRb || !dstRb || srcRb->Format != dstRb->Format) {
return GL_FALSE;
}
+ if (type == GL_STENCIL || type == GL_DEPTH_COMPONENT) {
+ /* can't handle packed depth+stencil here */
+ if (_mesa_is_format_packed_depth_stencil(srcRb->Format) ||
+ _mesa_is_format_packed_depth_stencil(dstRb->Format))
+ return GL_FALSE;
+ }
+ else if (type == GL_DEPTH_STENCIL) {
+ /* can't handle separate depth/stencil buffers */
+ if (srcRb != srcFb->Attachment[BUFFER_STENCIL].Renderbuffer ||
+ dstRb != dstFb->Attachment[BUFFER_STENCIL].Renderbuffer)
+ return GL_FALSE;
+ }
+
/* clipping not supported */
if (srcX < 0 || srcX + width > (GLint) srcFb->Width ||
srcY < 0 || srcY + height > (GLint) srcFb->Height ||
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;
+ pixelBytes = _mesa_get_format_bytes(srcRb->Format);
+ widthInBytes = width * pixelBytes;
+
+ if (srcRb == dstRb) {
+ /* map whole buffer for read/write */
+ /* XXX we could be clever and just map the union region of the
+ * source and dest rects.
+ */
+ GLubyte *map;
+ GLint rowStride;
+
+ ctx->Driver.MapRenderbuffer(ctx, srcRb, 0, 0,
+ srcRb->Width, srcRb->Height,
+ GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
+ &map, &rowStride, srcFb->FlipY);
+ if (!map) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+ return GL_TRUE; /* don't retry with slow path */
+ }
+
+ srcMap = map + srcY * rowStride + srcX * pixelBytes;
+ dstMap = map + dstY * rowStride + dstX * pixelBytes;
+
+ /* this handles overlapping copies */
+ if (srcY < dstY) {
+ /* copy in reverse (top->down) order */
+ srcMap += rowStride * (height - 1);
+ dstMap += rowStride * (height - 1);
+ srcRowStride = -rowStride;
+ dstRowStride = -rowStride;
+ }
+ else {
+ /* copy in normal (bottom->up) order */
+ srcRowStride = rowStride;
+ dstRowStride = rowStride;
+ }
}
else {
- /* bottom-up min-to-max */
- yStep = 1;
+ /* different src/dst buffers */
+ ctx->Driver.MapRenderbuffer(ctx, srcRb, srcX, srcY,
+ width, height,
+ GL_MAP_READ_BIT, &srcMap, &srcRowStride,
+ srcFb->FlipY);
+ if (!srcMap) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+ return GL_TRUE; /* don't retry with slow path */
+ }
+ ctx->Driver.MapRenderbuffer(ctx, dstRb, dstX, dstY,
+ width, height,
+ GL_MAP_WRITE_BIT, &dstMap, &dstRowStride,
+ dstFb->FlipY);
+ if (!dstMap) {
+ ctx->Driver.UnmapRenderbuffer(ctx, srcRb);
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
+ return GL_TRUE; /* don't retry with slow path */
+ }
}
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;
+ /* memmove() in case of overlap */
+ memmove(dstMap, srcMap, widthInBytes);
+ dstMap += dstRowStride;
+ srcMap += srcRowStride;
+ }
+
+ ctx->Driver.UnmapRenderbuffer(ctx, srcRb);
+ if (dstRb != srcRb) {
+ ctx->Driver.UnmapRenderbuffer(ctx, dstRb);
}
return GL_TRUE;
}
+/**
+ * Find/map the renderbuffer that we'll be reading from.
+ * The swrast_render_start() function only maps the drawing buffers,
+ * not the read buffer.
+ */
+static struct gl_renderbuffer *
+map_readbuffer(struct gl_context *ctx, GLenum type)
+{
+ struct gl_framebuffer *fb = ctx->ReadBuffer;
+ struct gl_renderbuffer *rb;
+ struct swrast_renderbuffer *srb;
+
+ switch (type) {
+ case GL_COLOR:
+ rb = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
+ break;
+ case GL_DEPTH:
+ case GL_DEPTH_STENCIL:
+ rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ break;
+ case GL_STENCIL:
+ rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ break;
+ default:
+ return NULL;
+ }
+
+ srb = swrast_renderbuffer(rb);
+
+ if (!srb || srb->Map) {
+ /* no buffer, or buffer is mapped already, we're done */
+ return NULL;
+ }
+
+ ctx->Driver.MapRenderbuffer(ctx, rb,
+ 0, 0, rb->Width, rb->Height,
+ GL_MAP_READ_BIT,
+ &srb->Map, &srb->RowStride,
+ fb->FlipY);
+
+ return rb;
+}
+
+
/**
* Do software-based glCopyPixels.
* By time we get here, all parameters will have been error-checked.
*/
void
-_swrast_CopyPixels( GLcontext *ctx,
- GLint srcx, GLint srcy, GLsizei width, GLsizei height,
- GLint destx, GLint desty, GLenum type )
+_swrast_CopyPixels(struct gl_context *ctx,
+ GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+ GLint destx, GLint desty, GLenum type)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- swrast_render_start(ctx);
-
+ struct gl_renderbuffer *rb;
+
if (!_mesa_check_conditional_render(ctx))
return; /* don't copy */
if (swrast->NewState)
_swrast_validate_derived( ctx );
- 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");
- }
+ if (!(SWRAST_CONTEXT(ctx)->_RasterMask != 0x0 ||
+ ctx->Pixel.ZoomX != 1.0F ||
+ ctx->Pixel.ZoomY != 1.0F ||
+ ctx->_ImageTransferState) &&
+ swrast_fast_copy_pixels(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
+ srcx, srcy, width, height, destx, desty,
+ type)) {
+ /* all done */
+ return;
+ }
+
+ swrast_render_start(ctx);
+ rb = map_readbuffer(ctx, type);
+
+ switch (type) {
+ case GL_COLOR:
+ copy_rgba_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 buffers separately (if the fast copy path wasn't taken) */
+ copy_depth_pixels(ctx, srcx, srcy, width, height, destx, desty);
+ copy_stencil_pixels(ctx, srcx, srcy, width, height, destx, desty);
+ break;
+ default:
+ _mesa_problem(ctx, "unexpected type in _swrast_CopyPixels");
}
swrast_render_finish(ctx);
+
+ if (rb) {
+ struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
+ ctx->Driver.UnmapRenderbuffer(ctx, rb);
+ srb->Map = NULL;
+ }
}
projects / mesa.git / blobdiff