-/* $Id: s_drawpix.c,v 1.26 2002/01/27 18:32:03 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 7.1
*
- * Copyright (C) 1999-2002 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 "colormac.h"
+#include "bufferobj.h"
#include "context.h"
#include "convolve.h"
#include "image.h"
#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
+#include "imports.h"
#include "pixel.h"
+#include "state.h"
#include "s_context.h"
#include "s_drawpix.h"
-#include "s_fog.h"
-#include "s_pixeltex.h"
#include "s_span.h"
#include "s_stencil.h"
-#include "s_texture.h"
#include "s_zoom.h"
-/*
- * Given the dest position, size and skipPixels and skipRows values
- * for a glDrawPixels command, perform clipping of the image bounds
- * so the result lies withing the context's buffer bounds.
- * Return: GL_TRUE if image is ready for drawing
- * GL_FALSE if image was completely clipped away (draw nothing)
- */
-GLboolean
-_mesa_clip_pixelrect(const GLcontext *ctx,
- GLint *destX, GLint *destY,
- GLsizei *width, GLsizei *height,
- GLint *skipPixels, GLint *skipRows)
-{
- const GLframebuffer *buffer = ctx->DrawBuffer;
-
- /* left clipping */
- if (*destX < buffer->_Xmin) {
- *skipPixels += (buffer->_Xmin - *destX);
- *width -= (buffer->_Xmin - *destX);
- *destX = buffer->_Xmin;
- }
- /* right clipping */
- if (*destX + *width > buffer->_Xmax)
- *width -= (*destX + *width - buffer->_Xmax);
-
- if (*width <= 0)
- return GL_FALSE;
-
- /* bottom clipping */
- if (*destY < buffer->_Ymin) {
- *skipRows += (buffer->_Ymin - *destY);
- *height -= (buffer->_Ymin - *destY);
- *destY = buffer->_Ymin;
- }
- /* top clipping */
- if (*destY + *height > buffer->_Ymax)
- *height -= (*destY + *height - buffer->_Ymax);
-
- if (*height <= 0)
- return GL_TRUE;
-
- return GL_TRUE;
-}
-
-
-
-/*
+/**
* Try to do a fast and simple RGB(a) glDrawPixels.
* Return: GL_TRUE if success, GL_FALSE if slow path must be used instead
*/
static GLboolean
-fast_draw_pixels(GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type, const GLvoid *pixels)
+fast_draw_rgba_pixels(GLcontext *ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *userUnpack,
+ const GLvoid *pixels)
{
+ const GLint imgX = x, imgY = y;
+ struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
+ const GLenum rbType = rb->DataType;
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
- GLchan rgb[MAX_WIDTH][3];
- GLchan rgba[MAX_WIDTH][4];
-
- if (!ctx->Current.RasterPosValid) {
- return GL_TRUE; /* no-op */
+ SWspan span;
+ GLboolean simpleZoom;
+ GLint yStep; /* +1 or -1 */
+ struct gl_pixelstore_attrib unpack;
+ GLint destX, destY, drawWidth, drawHeight; /* post clipping */
+
+ if ((swrast->_RasterMask & ~CLIP_BIT) ||
+ ctx->Texture._EnabledCoordUnits ||
+ userUnpack->SwapBytes ||
+ ctx->_ImageTransferState) {
+ /* can't handle any of those conditions */
+ return GL_FALSE;
}
- if ((SWRAST_CONTEXT(ctx)->_RasterMask&(~(SCISSOR_BIT|WINCLIP_BIT)))==0
- && ctx->Texture._ReallyEnabled == 0
- && unpack->Alignment == 1
- && !unpack->SwapBytes
- && !unpack->LsbFirst) {
-
- GLint destX = x;
- GLint destY = y;
- GLint drawWidth = width; /* actual width drawn */
- GLint drawHeight = height; /* actual height drawn */
- GLint skipPixels = unpack->SkipPixels;
- GLint skipRows = unpack->SkipRows;
- GLint rowLength;
- GLdepth zSpan[MAX_WIDTH]; /* only used when zooming */
- GLint zoomY0 = 0;
-
- if (unpack->RowLength > 0)
- rowLength = unpack->RowLength;
- else
- rowLength = width;
+ INIT_SPAN(span, GL_BITMAP);
+ span.arrayMask = SPAN_RGBA;
+ span.arrayAttribs = FRAG_BIT_COL0;
+ _swrast_span_default_attribs(ctx, &span);
+
+ /* copy input params since clipping may change them */
+ unpack = *userUnpack;
+ destX = x;
+ destY = y;
+ drawWidth = width;
+ drawHeight = height;
+
+ /* check for simple zooming and clipping */
+ if (ctx->Pixel.ZoomX == 1.0F &&
+ (ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F)) {
+ if (!_mesa_clip_drawpixels(ctx, &destX, &destY,
+ &drawWidth, &drawHeight, &unpack)) {
+ /* image was completely clipped: no-op, all done */
+ return GL_TRUE;
+ }
+ simpleZoom = GL_TRUE;
+ yStep = (GLint) ctx->Pixel.ZoomY;
+ ASSERT(yStep == 1 || yStep == -1);
+ }
+ else {
+ /* non-simple zooming */
+ simpleZoom = GL_FALSE;
+ yStep = 1;
+ if (unpack.RowLength == 0)
+ unpack.RowLength = width;
+ }
- /* If we're not using pixel zoom then do all clipping calculations
- * now. Otherwise, we'll let the _mesa_write_zoomed_*_span() functions
- * handle the clipping.
- */
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* horizontal clipping */
- if (destX < ctx->DrawBuffer->_Xmin) {
- skipPixels += (ctx->DrawBuffer->_Xmin - destX);
- drawWidth -= (ctx->DrawBuffer->_Xmin - destX);
- destX = ctx->DrawBuffer->_Xmin;
- }
- if (destX + drawWidth > ctx->DrawBuffer->_Xmax)
- drawWidth -= (destX + drawWidth - ctx->DrawBuffer->_Xmax);
- if (drawWidth <= 0)
- return GL_TRUE;
+ /*
+ * Ready to draw!
+ */
- /* vertical clipping */
- if (destY < ctx->DrawBuffer->_Ymin) {
- skipRows += (ctx->DrawBuffer->_Ymin - destY);
- drawHeight -= (ctx->DrawBuffer->_Ymin - destY);
- destY = ctx->DrawBuffer->_Ymin;
+ if (format == GL_RGBA && type == rbType) {
+ const GLubyte *src
+ = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,
+ height, format, type, 0, 0);
+ const GLint srcStride = _mesa_image_row_stride(&unpack, width,
+ format, type);
+ if (simpleZoom) {
+ GLint row;
+ for (row = 0; row < drawHeight; row++) {
+ rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL);
+ src += srcStride;
+ destY += yStep;
}
- if (destY + drawHeight > ctx->DrawBuffer->_Ymax)
- drawHeight -= (destY + drawHeight - ctx->DrawBuffer->_Ymax);
- if (drawHeight <= 0)
- return GL_TRUE;
}
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down image */
- /* horizontal clipping */
- if (destX < ctx->DrawBuffer->_Xmin) {
- skipPixels += (ctx->DrawBuffer->_Xmin - destX);
- drawWidth -= (ctx->DrawBuffer->_Xmin - destX);
- destX = ctx->DrawBuffer->_Xmin;
+ else {
+ /* with zooming */
+ GLint row;
+ for (row = 0; row < drawHeight; row++) {
+ span.x = destX;
+ span.y = destY + row;
+ span.end = drawWidth;
+ span.array->ChanType = rbType;
+ _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, src);
+ src += srcStride;
}
- if (destX + drawWidth > ctx->DrawBuffer->_Xmax)
- drawWidth -= (destX + drawWidth - ctx->DrawBuffer->_Xmax);
- if (drawWidth <= 0)
- return GL_TRUE;
+ span.array->ChanType = CHAN_TYPE;
+ }
+ return GL_TRUE;
+ }
- /* vertical clipping */
- if (destY > ctx->DrawBuffer->_Ymax) {
- skipRows += (destY - ctx->DrawBuffer->_Ymax);
- drawHeight -= (destY - ctx->DrawBuffer->_Ymax);
- destY = ctx->DrawBuffer->_Ymax;
+ if (format == GL_RGB && type == rbType) {
+ const GLubyte *src
+ = (const GLubyte *) _mesa_image_address2d(&unpack, pixels, width,
+ height, format, type, 0, 0);
+ const GLint srcStride = _mesa_image_row_stride(&unpack, width,
+ format, type);
+ if (simpleZoom) {
+ GLint row;
+ for (row = 0; row < drawHeight; row++) {
+ rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL);
+ src += srcStride;
+ destY += yStep;
}
- if (destY - drawHeight < ctx->DrawBuffer->_Ymin)
- drawHeight -= (ctx->DrawBuffer->_Ymin - (destY - drawHeight));
- if (drawHeight <= 0)
- return GL_TRUE;
}
else {
- /* setup array of fragment Z value to pass to zoom function */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMaxF);
- GLint i;
- ASSERT(drawWidth < MAX_WIDTH);
- for (i=0; i<drawWidth; i++)
- zSpan[i] = z;
-
- /* save Y value of first row */
- zoomY0 = IROUND(ctx->Current.RasterPos[1]);
+ /* with zooming */
+ GLint row;
+ for (row = 0; row < drawHeight; row++) {
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ span.array->ChanType = rbType;
+ _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, src);
+ src += srcStride;
+ destY++;
+ }
+ span.array->ChanType = CHAN_TYPE;
}
+ return GL_TRUE;
+ }
+ /* Remaining cases haven't been tested with alignment != 1 */
+ if (userUnpack->Alignment != 1)
+ return GL_FALSE;
- /*
- * Ready to draw!
- * The window region at (destX, destY) of size (drawWidth, drawHeight)
- * will be written to.
- * We'll take pixel data from buffer pointed to by "pixels" but we'll
- * skip "skipRows" rows and skip "skipPixels" pixels/row.
- */
-
- if (format == GL_RGBA && type == CHAN_TYPE
- && ctx->_ImageTransferState==0) {
- if (ctx->Visual.rgbMode) {
- GLchan *src = (GLchan *) pixels
- + (skipRows * rowLength + skipPixels) * 4;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) src, NULL);
- src += rowLength * 4;
- destY++;
- }
- }
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- destY--;
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) src, NULL);
- src += rowLength * 4;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- _mesa_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[4]) src, zoomY0);
- src += rowLength * 4;
- destY++;
- }
+ if (format == GL_LUMINANCE && type == CHAN_TYPE && rbType == CHAN_TYPE) {
+ const GLchan *src = (const GLchan *) pixels
+ + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels);
+ if (simpleZoom) {
+ /* no zooming */
+ GLint row;
+ ASSERT(drawWidth <= MAX_WIDTH);
+ for (row = 0; row < drawHeight; row++) {
+ GLchan rgb[MAX_WIDTH][3];
+ GLint i;
+ for (i = 0;i<drawWidth;i++) {
+ rgb[i][0] = src[i];
+ rgb[i][1] = src[i];
+ rgb[i][2] = src[i];
}
+ rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, rgb, NULL);
+ src += unpack.RowLength;
+ destY += yStep;
}
- return GL_TRUE;
}
- else if (format == GL_RGB && type == CHAN_TYPE
- && ctx->_ImageTransferState == 0) {
- if (ctx->Visual.rgbMode) {
- GLchan *src = (GLchan *) pixels
- + (skipRows * rowLength + skipPixels) * 3;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- GLint row;
- for (row=0; row<drawHeight; row++) {
- (*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) src, NULL);
- src += rowLength * 3;
- destY++;
- }
- }
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- destY--;
- (*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) src, NULL);
- src += rowLength * 3;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- _mesa_write_zoomed_rgb_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[3]) src, zoomY0);
- src += rowLength * 3;
- destY++;
- }
+ else {
+ /* with zooming */
+ GLint row;
+ ASSERT(drawWidth <= MAX_WIDTH);
+ for (row = 0; row < drawHeight; row++) {
+ GLchan rgb[MAX_WIDTH][3];
+ GLint i;
+ for (i = 0;i<drawWidth;i++) {
+ rgb[i][0] = src[i];
+ rgb[i][1] = src[i];
+ rgb[i][2] = src[i];
}
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span, rgb);
+ src += unpack.RowLength;
+ destY++;
}
- return GL_TRUE;
}
- else if (format == GL_LUMINANCE && type == CHAN_TYPE
- && ctx->_ImageTransferState==0) {
- if (ctx->Visual.rgbMode) {
- GLchan *src = (GLchan *) pixels
- + (skipRows * rowLength + skipPixels);
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgb[i][0] = src[i];
- rgb[i][1] = src[i];
- rgb[i][2] = src[i];
- }
- (*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) rgb, NULL);
- src += rowLength;
- destY++;
- }
- }
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgb[i][0] = src[i];
- rgb[i][1] = src[i];
- rgb[i][2] = src[i];
- }
- destY--;
- (*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) rgb, NULL);
- src += rowLength;
- }
- }
- else {
- /* with zooming */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgb[i][0] = src[i];
- rgb[i][1] = src[i];
- rgb[i][2] = src[i];
- }
- _mesa_write_zoomed_rgb_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[3]) rgb, zoomY0);
- src += rowLength;
- destY++;
- }
+ return GL_TRUE;
+ }
+
+ if (format == GL_LUMINANCE_ALPHA && type == CHAN_TYPE && rbType == CHAN_TYPE) {
+ const GLchan *src = (const GLchan *) pixels
+ + (unpack.SkipRows * unpack.RowLength + unpack.SkipPixels)*2;
+ if (simpleZoom) {
+ GLint row;
+ ASSERT(drawWidth <= MAX_WIDTH);
+ for (row = 0; row < drawHeight; row++) {
+ GLint i;
+ const GLchan *ptr = src;
+ for (i = 0;i<drawWidth;i++) {
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
+ rb->PutRow(ctx, rb, drawWidth, destX, destY,
+ span.array->rgba, NULL);
+ src += unpack.RowLength*2;
+ destY += yStep;
}
- return GL_TRUE;
}
- else if (format == GL_LUMINANCE_ALPHA && type == CHAN_TYPE
- && ctx->_ImageTransferState == 0) {
- if (ctx->Visual.rgbMode) {
- GLchan *src = (GLchan *) pixels
- + (skipRows * rowLength + skipPixels)*2;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- GLchan *ptr = src;
- for (i=0;i<drawWidth;i++) {
- rgba[i][0] = *ptr;
- rgba[i][1] = *ptr;
- rgba[i][2] = *ptr++;
- rgba[i][3] = *ptr++;
- }
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba, NULL);
- src += rowLength*2;
- destY++;
- }
- }
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- GLchan *ptr = src;
- for (i=0;i<drawWidth;i++) {
- rgba[i][0] = *ptr;
- rgba[i][1] = *ptr;
- rgba[i][2] = *ptr++;
- rgba[i][3] = *ptr++;
- }
- destY--;
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba, NULL);
- src += rowLength*2;
- }
- }
- else {
- /* with zooming */
- GLint row;
- ASSERT(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLchan *ptr = src;
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgba[i][0] = *ptr;
- rgba[i][1] = *ptr;
- rgba[i][2] = *ptr++;
- rgba[i][3] = *ptr++;
- }
- _mesa_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[4]) rgba, zoomY0);
- src += rowLength*2;
- destY++;
- }
+ else {
+ /* with zooming */
+ GLint row;
+ ASSERT(drawWidth <= MAX_WIDTH);
+ for (row = 0; row < drawHeight; row++) {
+ const GLchan *ptr = src;
+ GLint i;
+ for (i = 0;i<drawWidth;i++) {
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
+ span.array->rgba);
+ src += unpack.RowLength*2;
+ destY++;
}
- return GL_TRUE;
}
- else if (format==GL_COLOR_INDEX && type==GL_UNSIGNED_BYTE) {
- GLubyte *src = (GLubyte *) pixels + skipRows * rowLength + skipPixels;
- if (ctx->Visual.rgbMode) {
- /* convert CI data to RGBA */
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (const GLchan (*)[4]) rgba,
- NULL);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
- }
- else if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==-1.0F) {
- /* upside-down */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
- destY--;
- (*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba,
- NULL);
- src += rowLength;
- }
- return GL_TRUE;
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
- _mesa_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[4]) rgba, zoomY0);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
+ return GL_TRUE;
+ }
+
+ if (format == GL_COLOR_INDEX && type == GL_UNSIGNED_BYTE) {
+ const GLubyte *src = (const GLubyte *) pixels
+ + unpack.SkipRows * unpack.RowLength + unpack.SkipPixels;
+ if (ctx->Visual.rgbMode && rbType == GL_UNSIGNED_BYTE) {
+ /* convert ubyte/CI data to ubyte/RGBA */
+ if (simpleZoom) {
+ GLint row;
+ for (row = 0; row < drawHeight; row++) {
+ ASSERT(drawWidth <= MAX_WIDTH);
+ _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,
+ span.array->rgba8);
+ rb->PutRow(ctx, rb, drawWidth, destX, destY,
+ span.array->rgba8, NULL);
+ src += unpack.RowLength;
+ destY += yStep;
}
}
- else if (ctx->_ImageTransferState==0) {
- /* write CI data to CI frame buffer */
+ else {
+ /* ubyte/CI to ubyte/RGBA with zooming */
GLint row;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- for (row=0; row<drawHeight; row++) {
- (*swrast->Driver.WriteCI8Span)(ctx, drawWidth, destX, destY,
- src, NULL);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
- }
- else {
- /* with zooming */
- return GL_FALSE;
+ for (row = 0; row < drawHeight; row++) {
+ ASSERT(drawWidth <= MAX_WIDTH);
+ _mesa_map_ci8_to_rgba8(ctx, drawWidth, src,
+ span.array->rgba8);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
+ span.array->rgba8);
+ src += unpack.RowLength;
+ destY++;
}
}
+ return GL_TRUE;
}
- else {
- /* can't handle this pixel format and/or data type here */
- return GL_FALSE;
+ else if (!ctx->Visual.rgbMode && rbType == GL_UNSIGNED_INT) {
+ /* write CI data to CI frame buffer */
+ GLint row;
+ if (simpleZoom) {
+ for (row = 0; row < drawHeight; row++) {
+ GLuint index32[MAX_WIDTH];
+ GLint col;
+ for (col = 0; col < drawWidth; col++)
+ index32[col] = src[col];
+ rb->PutRow(ctx, rb, drawWidth, destX, destY, index32, NULL);
+ src += unpack.RowLength;
+ destY += yStep;
+ }
+ return GL_TRUE;
+ }
}
}
- /* can't do a simple draw, have to use slow path */
+ /* can't handle this pixel format and/or data type */
return GL_FALSE;
}
/*
- * Do glDrawPixels of index pixels.
+ * Draw color index image.
*/
static void
draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+ GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels )
{
+ const GLint imgX = x, imgY = y;
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint row, drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
- struct sw_span span;
-
- INIT_SPAN(span);
- span.arrayMask |= SPAN_INDEX;
+ GLint row, skipPixels;
+ SWspan span;
- if (ctx->Depth.Test)
- _mesa_span_default_z(ctx, &span);
- if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, &span);
+ INIT_SPAN(span, GL_BITMAP);
+ span.arrayMask = SPAN_INDEX;
+ _swrast_span_default_attribs(ctx, &span);
/*
* General solution
*/
- for (row = 0; row < height; row++, y++) {
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, GL_UNSIGNED_INT,
- span.color.index,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- if (zoom) {
- _mesa_write_zoomed_index_span(ctx, drawWidth, x, y,
- span.zArray, span.fogArray,
- span.color.index, desty);
- }
- else {
- span.x = x;
- span.y = y;
- span.end = drawWidth;
- _mesa_write_index_span(ctx, &span, GL_BITMAP);
+ skipPixels = 0;
+ while (skipPixels < width) {
+ const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+ ASSERT(spanWidth <= MAX_WIDTH);
+ for (row = 0; row < height; row++) {
+ const GLvoid *source = _mesa_image_address2d(unpack, pixels,
+ width, height,
+ GL_COLOR_INDEX, type,
+ row, skipPixels);
+ _mesa_unpack_index_span(ctx, spanWidth, GL_UNSIGNED_INT,
+ span.array->index, type, source, unpack,
+ ctx->_ImageTransferState);
+
+ /* These may get changed during writing/clipping */
+ span.x = x + skipPixels;
+ span.y = y + row;
+ span.end = spanWidth;
+
+ if (zoom)
+ _swrast_write_zoomed_index_span(ctx, imgX, imgY, &span);
+ else
+ _swrast_write_index_span(ctx, &span);
}
+ skipPixels += spanWidth;
}
}
/*
- * Do glDrawPixels of stencil image. The image datatype may either
- * be GLubyte or GLbitmap.
+ * Draw stencil image.
*/
static void
draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+ GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels )
{
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint row, drawWidth;
-
- if (type != GL_BYTE &&
- type != GL_UNSIGNED_BYTE &&
- type != GL_SHORT &&
- type != GL_UNSIGNED_SHORT &&
- type != GL_INT &&
- type != GL_UNSIGNED_INT &&
- type != GL_FLOAT &&
- type != GL_BITMAP) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glDrawPixels(stencil type)");
- return;
- }
-
- if (ctx->Visual.stencilBits == 0) {
- _mesa_error( ctx, GL_INVALID_OPERATION, "glDrawPixels(no stencil buffer)");
- return;
- }
-
- drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
-
- for (row = 0; row < height; row++, y++) {
- GLstencil values[MAX_WIDTH];
- GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
- ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, destType, values,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- if (ctx->_ImageTransferState & IMAGE_SHIFT_OFFSET_BIT) {
- _mesa_shift_and_offset_stencil( ctx, drawWidth, values );
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil( ctx, drawWidth, values );
- }
-
- if (zoom) {
- _mesa_write_zoomed_stencil_span( ctx, (GLuint) drawWidth, x, y,
- values, desty );
- }
- else {
- _mesa_write_stencil_span( ctx, (GLuint) drawWidth, x, y, values );
+ const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+ GLint skipPixels;
+
+ /* if width > MAX_WIDTH, have to process image in chunks */
+ skipPixels = 0;
+ while (skipPixels < width) {
+ const GLint spanX = x + skipPixels;
+ const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+ GLint row;
+ for (row = 0; row < height; row++) {
+ const GLint spanY = y + row;
+ GLstencil values[MAX_WIDTH];
+ GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
+ ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+ const GLvoid *source = _mesa_image_address2d(unpack, pixels,
+ width, height,
+ GL_COLOR_INDEX, type,
+ row, skipPixels);
+ _mesa_unpack_stencil_span(ctx, spanWidth, destType, values,
+ type, source, unpack,
+ ctx->_ImageTransferState);
+ if (zoom) {
+ _swrast_write_zoomed_stencil_span(ctx, x, y, spanWidth,
+ spanX, spanY, values);
+ }
+ else {
+ _swrast_write_stencil_span(ctx, spanWidth, spanX, spanY, values);
+ }
}
+ skipPixels += spanWidth;
}
}
/*
- * Do a glDrawPixels of depth values.
+ * Draw depth image.
*/
static void
draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+ GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels )
{
- const GLboolean bias_or_scale = ctx->Pixel.DepthBias!=0.0 || ctx->Pixel.DepthScale!=1.0;
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
- struct sw_span span;
-
- INIT_SPAN(span);
- span.arrayMask |= SPAN_Z;
- span.end = drawWidth;
-
- if (type != GL_BYTE
- && type != GL_UNSIGNED_BYTE
- && type != GL_SHORT
- && type != GL_UNSIGNED_SHORT
- && type != GL_INT
- && type != GL_UNSIGNED_INT
- && type != GL_FLOAT) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glDrawPixels(type)");
- return;
- }
-
- _mesa_span_default_color(ctx, &span);
-
- if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, &span);
-
- if (type==GL_UNSIGNED_SHORT && sizeof(GLdepth)==sizeof(GLushort)
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
+ const GLboolean scaleOrBias
+ = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+ const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+ SWspan span;
+
+ INIT_SPAN(span, GL_BITMAP);
+ span.arrayMask = SPAN_Z;
+ _swrast_span_default_attribs(ctx, &span);
+
+ if (type == GL_UNSIGNED_SHORT
+ && ctx->DrawBuffer->Visual.depthBits == 16
+ && !scaleOrBias
+ && !zoom
+ && ctx->Visual.rgbMode
+ && width <= MAX_WIDTH
+ && !unpack->SwapBytes) {
/* Special case: directly write 16-bit depth values */
GLint row;
- for (row = 0; row < height; row++, y++) {
- const GLushort *zptr = (const GLushort *)
- _mesa_image_address(&ctx->Unpack, pixels, width, height,
- GL_DEPTH_COMPONENT, type, 0, row, 0);
+ for (row = 0; row < height; row++) {
+ const GLushort *zSrc = (const GLushort *)
+ _mesa_image_address2d(unpack, pixels, width, height,
+ GL_DEPTH_COMPONENT, type, row, 0);
GLint i;
- for (i = 0; i < drawWidth; i++)
- span.zArray[i] = zptr[i];
-
+ for (i = 0; i < width; i++)
+ span.array->z[i] = zSrc[i];
span.x = x;
- span.y = y;
- span.end = drawWidth;
- span.filledDepth = GL_TRUE; /* XXX temporary */
- _mesa_write_rgba_span(ctx, &span, GL_BITMAP);
+ span.y = y + row;
+ span.end = width;
+ _swrast_write_rgba_span(ctx, &span);
}
}
- else if (type==GL_UNSIGNED_INT && ctx->Visual.depthBits == 32
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
- /* Special case: directly write 32-bit depth values */
+ else if (type == GL_UNSIGNED_INT
+ && !scaleOrBias
+ && !zoom
+ && ctx->Visual.rgbMode
+ && width <= MAX_WIDTH
+ && !unpack->SwapBytes) {
+ /* Special case: shift 32-bit values down to Visual.depthBits */
+ const GLint shift = 32 - ctx->DrawBuffer->Visual.depthBits;
GLint row;
- for (row = 0; row < height; row++, y++) {
- const GLuint *zptr = (const GLuint *)
- _mesa_image_address(&ctx->Unpack, pixels, width, height,
- GL_DEPTH_COMPONENT, type, 0, row, 0);
-
- /* XXX get rid of this loop. use zArray pointer in span */
- GLint i;
- for (i = 0; i < drawWidth; i++)
- span.zArray[i] = zptr[i];
+ for (row = 0; row < height; row++) {
+ const GLuint *zSrc = (const GLuint *)
+ _mesa_image_address2d(unpack, pixels, width, height,
+ GL_DEPTH_COMPONENT, type, row, 0);
+ if (shift == 0) {
+ _mesa_memcpy(span.array->z, zSrc, width * sizeof(GLuint));
+ }
+ else {
+ GLint col;
+ for (col = 0; col < width; col++)
+ span.array->z[col] = zSrc[col] >> shift;
+ }
span.x = x;
- span.y = y;
- span.end = drawWidth;
- _mesa_write_rgba_span(ctx, &span, GL_BITMAP);
+ span.y = y + row;
+ span.end = width;
+ _swrast_write_rgba_span(ctx, &span);
}
}
else {
/* General case */
- GLint row;
- for (row = 0; row < height; row++, y++) {
- GLfloat fspan[MAX_WIDTH];
- const GLvoid *src = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_DEPTH_COMPONENT, type, 0, row, 0);
- _mesa_unpack_depth_span( ctx, drawWidth, fspan, type, src,
- &ctx->Unpack );
- /* clamp depth values to [0,1] and convert from floats to integers */
- {
- const GLfloat zs = ctx->DepthMaxF;
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- span.zArray[i] = (GLdepth) (fspan[i] * zs);
- }
- }
-
- if (ctx->Visual.rgbMode) {
+ const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
+ GLint skipPixels = 0;
+
+ /* in case width > MAX_WIDTH do the copy in chunks */
+ while (skipPixels < width) {
+ const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+ GLint row;
+ ASSERT(span.end <= MAX_WIDTH);
+ for (row = 0; row < height; row++) {
+ const GLvoid *zSrc = _mesa_image_address2d(unpack,
+ pixels, width, height,
+ GL_DEPTH_COMPONENT, type,
+ row, skipPixels);
+
+ /* Set these for each row since the _swrast_write_* function may
+ * change them while clipping.
+ */
+ span.x = x + skipPixels;
+ span.y = y + row;
+ span.end = spanWidth;
+
+ _mesa_unpack_depth_span(ctx, spanWidth,
+ GL_UNSIGNED_INT, span.array->z, depthMax,
+ type, zSrc, unpack);
if (zoom) {
- _mesa_write_zoomed_rgba_span(ctx, width, x, y, span.zArray, 0,
- (const GLchan (*)[4]) span.color.rgba, desty);
+ _swrast_write_zoomed_depth_span(ctx, x, y, &span);
}
- else {
- span.x = x;
- span.y = y;
- span.end = drawWidth;
- _mesa_write_rgba_span(ctx, &span, GL_BITMAP);
- }
- }
- else {
- if (zoom) {
- _mesa_write_zoomed_index_span(ctx, drawWidth, x, y,
- span.zArray, 0,
- span.color.index, GL_BITMAP);
+ else if (ctx->Visual.rgbMode) {
+ _swrast_write_rgba_span(ctx, &span);
}
else {
- span.x = x;
- span.y = y;
- span.end = drawWidth;
- _mesa_write_index_span(ctx, &span, GL_BITMAP);
+ _swrast_write_index_span(ctx, &span);
}
}
+ skipPixels += spanWidth;
}
}
}
-/*
- * Do glDrawPixels of RGBA pixels.
+
+/**
+ * Draw RGBA image.
*/
static void
draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
GLsizei width, GLsizei height,
- GLenum format, GLenum type, const GLvoid *pixels )
+ GLenum format, GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
+ const GLint imgX = x, imgY = y;
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLboolean quickDraw;
GLfloat *convImage = NULL;
- GLuint transferOps = ctx->_ImageTransferState;
- struct sw_span span;
-
- INIT_SPAN(span);
- span.arrayMask |= SPAN_RGBA;
-
- if (!_mesa_is_legal_format_and_type(format, type)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glDrawPixels(format or type)");
- return;
- }
+ GLbitfield transferOps = ctx->_ImageTransferState;
+ SWspan span;
/* Try an optimized glDrawPixels first */
- if (fast_draw_pixels(ctx, x, y, width, height, format, type, pixels))
+ if (fast_draw_rgba_pixels(ctx, x, y, width, height, format, type,
+ unpack, pixels)) {
return;
-
- /* Fragment depth values */
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- /* fill in array of z values */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->DepthMaxF);
- GLfloat fog;
- GLint i;
-
- if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
- fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterFogCoord);
- else
- fog = _mesa_z_to_fogfactor(ctx, ctx->Current.RasterDistance);
-
- for (i=0;i<width;i++) {
- span.zArray[i] = z;
- span.fogArray[i] = fog;
- }
}
- if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, &span);
- span.arrayMask |= SPAN_Z;
-
- if (SWRAST_CONTEXT(ctx)->_RasterMask == 0 && !zoom && x >= 0 && y >= 0
- && x + width <= ctx->DrawBuffer->Width
- && y + height <= ctx->DrawBuffer->Height) {
- quickDraw = GL_TRUE;
- }
- else {
- quickDraw = GL_FALSE;
- }
+ INIT_SPAN(span, GL_BITMAP);
+ _swrast_span_default_attribs(ctx, &span);
+ span.arrayMask = SPAN_RGBA;
+ span.arrayAttribs = FRAG_BIT_COL0; /* we're fill in COL0 attrib values */
if (ctx->Pixel.Convolution2DEnabled || ctx->Pixel.Separable2DEnabled) {
/* Convolution has to be handled specially. We'll create an
GLint row;
GLfloat *dest, *tmpImage;
- tmpImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
+ tmpImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
if (!tmpImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
return;
}
- convImage = (GLfloat *) MALLOC(width * height * 4 * sizeof(GLfloat));
+ convImage = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
if (!convImage) {
- FREE(tmpImage);
+ _mesa_free(tmpImage);
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
return;
}
/* Unpack the image and apply transfer ops up to convolution */
dest = tmpImage;
for (row = 0; row < height; row++) {
- const GLvoid *source = _mesa_image_address(unpack,
- pixels, width, height, format, type, 0, row, 0);
- _mesa_unpack_float_color_span(ctx, width, GL_RGBA, (GLfloat *) dest,
- format, type, source, unpack,
- transferOps & IMAGE_PRE_CONVOLUTION_BITS,
- GL_FALSE);
+ const GLvoid *source = _mesa_image_address2d(unpack,
+ pixels, width, height, format, type, row, 0);
+ _mesa_unpack_color_span_float(ctx, width, GL_RGBA, (GLfloat *) dest,
+ format, type, source, unpack,
+ transferOps & IMAGE_PRE_CONVOLUTION_BITS);
dest += width * 4;
}
ASSERT(ctx->Pixel.Separable2DEnabled);
_mesa_convolve_sep_image(ctx, &width, &height, tmpImage, convImage);
}
- FREE(tmpImage);
+ _mesa_free(tmpImage);
/* continue transfer ops and draw the convolved image */
- unpack = &_mesa_native_packing;
+ unpack = &ctx->DefaultPacking;
pixels = convImage;
format = GL_RGBA;
type = GL_FLOAT;
transferOps &= IMAGE_POST_CONVOLUTION_BITS;
}
+ else if (ctx->Pixel.Convolution1DEnabled) {
+ /* we only want to apply 1D convolution to glTexImage1D */
+ transferOps &= ~(IMAGE_CONVOLUTION_BIT |
+ IMAGE_POST_CONVOLUTION_SCALE_BIAS);
+ }
+
+ if (ctx->DrawBuffer->_NumColorDrawBuffers[0] > 0 &&
+ ctx->DrawBuffer->_ColorDrawBuffers[0][0]->DataType != GL_FLOAT &&
+ ctx->Color.ClampFragmentColor != GL_FALSE) {
+ /* need to clamp colors before applying fragment ops */
+ transferOps |= IMAGE_CLAMP_BIT;
+ }
/*
* General solution
*/
{
- GLint row;
- if (width > MAX_WIDTH)
- width = MAX_WIDTH;
- for (row = 0; row < height; row++, y++) {
- const GLvoid *source = _mesa_image_address(unpack,
- pixels, width, height, format, type, 0, row, 0);
- /* printf("Unpack f=0x%x t=0x%x\n", format, type);*/
- _mesa_unpack_chan_color_span(ctx, width, GL_RGBA,
- (GLchan *) span.color.rgba,
- format, type, source, unpack,
- transferOps);
- if (0){
- int k;
- for (k = 0; k < width; k++)
- printf("%02x ", span.color.rgba[k][3]);
- printf("\n");
- }
+ const GLboolean sink = (ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink)
+ || (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink);
+ const GLbitfield interpMask = span.interpMask;
+ const GLbitfield arrayMask = span.arrayMask;
+ const GLint srcStride
+ = _mesa_image_row_stride(unpack, width, format, type);
+ GLint skipPixels = 0;
+ /* use span array for temp color storage */
+ GLfloat *rgba = (GLfloat *) span.array->attribs[FRAG_ATTRIB_COL0];
+
+ /* if the span is wider than MAX_WIDTH we have to do it in chunks */
+ while (skipPixels < width) {
+ const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
+ const GLubyte *source
+ = (const GLubyte *) _mesa_image_address2d(unpack, pixels,
+ width, height, format,
+ type, 0, skipPixels);
+ GLint row;
+
+ for (row = 0; row < height; row++) {
+ /* get image row as float/RGBA */
+ _mesa_unpack_color_span_float(ctx, spanWidth, GL_RGBA, rgba,
+ format, type, source, unpack,
+ transferOps);
+ /* draw the span */
+ if (!sink) {
+ /* Set these for each row since the _swrast_write_* functions
+ * may change them while clipping/rendering.
+ */
+ span.array->ChanType = GL_FLOAT;
+ span.x = x + skipPixels;
+ span.y = y + row;
+ span.end = spanWidth;
+ span.arrayMask = arrayMask;
+ span.interpMask = interpMask;
+ if (zoom) {
+ _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span, rgba);
+ }
+ else {
+ _swrast_write_rgba_span(ctx, &span);
+ }
+ }
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
+ source += srcStride;
+ } /* for row */
- if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._ReallyEnabled) {
- span.end = width;
- _swrast_pixel_texture(ctx, &span);
- }
+ skipPixels += spanWidth;
+ } /* while skipPixels < width */
- if (quickDraw) {
- (*swrast->Driver.WriteRGBASpan)(ctx, width, x, y,
- (CONST GLchan (*)[4]) span.color.rgba, NULL);
- }
- else if (zoom) {
- _mesa_write_zoomed_rgba_span(ctx, width, x, y, span.zArray,
- span.fogArray,
- (CONST GLchan (*)[4]) span.color.rgba, desty);
- }
- else {
- span.x = x;
- span.y = y;
- span.end = width;
- _mesa_write_rgba_span(ctx, &span, GL_BITMAP);
- }
- }
+ /* XXX this is ugly/temporary, to undo above change */
+ span.array->ChanType = CHAN_TYPE;
}
if (convImage) {
- FREE(convImage);
+ _mesa_free(convImage);
}
}
+/**
+ * This is a bit different from drawing GL_DEPTH_COMPONENT pixels.
+ * The only per-pixel operations that apply are depth scale/bias,
+ * stencil offset/shift, GL_DEPTH_WRITEMASK and GL_STENCIL_WRITEMASK,
+ * and pixel zoom.
+ * Also, only the depth buffer and stencil buffers are touched, not the
+ * color buffer(s).
+ */
+static void
+draw_depth_stencil_pixels(GLcontext *ctx, GLint x, GLint y,
+ GLsizei width, GLsizei height, GLenum type,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLvoid *pixels)
+{
+ const GLint imgX = x, imgY = y;
+ const GLboolean scaleOrBias
+ = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+ const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
+ const GLuint stencilMask = ctx->Stencil.WriteMask[0];
+ const GLuint stencilType = (STENCIL_BITS == 8) ?
+ GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+ const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
+ struct gl_renderbuffer *depthRb, *stencilRb;
+ struct gl_pixelstore_attrib clippedUnpack = *unpack;
+
+ if (!zoom) {
+ if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
+ &clippedUnpack)) {
+ /* totally clipped */
+ return;
+ }
+ }
+
+ depthRb = ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+ stencilRb = ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer;
+ ASSERT(depthRb);
+ ASSERT(stencilRb);
+
+ if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+ stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT &&
+ depthRb == stencilRb &&
+ !scaleOrBias &&
+ !zoom &&
+ ctx->Depth.Mask &&
+ (stencilMask & 0xff) == 0xff) {
+ /* This is the ideal case.
+ * Drawing GL_DEPTH_STENCIL pixels into a combined depth/stencil buffer.
+ * Plus, no pixel transfer ops, zooming, or masking needed.
+ */
+ GLint i;
+ for (i = 0; i < height; i++) {
+ const GLuint *src = (const GLuint *)
+ _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+ GL_DEPTH_STENCIL_EXT, type, i, 0);
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, src, NULL);
+ }
+ }
+ else {
+ /* sub-optimal cases:
+ * Separate depth/stencil buffers, or pixel transfer ops required.
+ */
+ /* XXX need to handle very wide images (skippixels) */
+ GLint i;
-/*
- * Execute glDrawPixels
+ depthRb = ctx->DrawBuffer->_DepthBuffer;
+ stencilRb = ctx->DrawBuffer->_StencilBuffer;
+
+ for (i = 0; i < height; i++) {
+ const GLuint *depthStencilSrc = (const GLuint *)
+ _mesa_image_address2d(&clippedUnpack, pixels, width, height,
+ GL_DEPTH_STENCIL_EXT, type, i, 0);
+
+ if (ctx->Depth.Mask) {
+ if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 24) {
+ /* fast path 24-bit zbuffer */
+ GLuint zValues[MAX_WIDTH];
+ GLint j;
+ ASSERT(depthRb->DataType == GL_UNSIGNED_INT);
+ for (j = 0; j < width; j++) {
+ zValues[j] = depthStencilSrc[j] >> 8;
+ }
+ if (zoom)
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+ x, y + i, zValues);
+ else
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+ }
+ else if (!scaleOrBias && ctx->DrawBuffer->Visual.depthBits == 16) {
+ /* fast path 16-bit zbuffer */
+ GLushort zValues[MAX_WIDTH];
+ GLint j;
+ ASSERT(depthRb->DataType == GL_UNSIGNED_SHORT);
+ for (j = 0; j < width; j++) {
+ zValues[j] = depthStencilSrc[j] >> 16;
+ }
+ if (zoom)
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width,
+ x, y + i, zValues);
+ else
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+ }
+ else {
+ /* general case */
+ GLuint zValues[MAX_WIDTH]; /* 16 or 32-bit Z value storage */
+ _mesa_unpack_depth_span(ctx, width,
+ depthRb->DataType, zValues, depthMax,
+ type, depthStencilSrc, &clippedUnpack);
+ if (zoom) {
+ _swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,
+ y + i, zValues);
+ }
+ else {
+ depthRb->PutRow(ctx, depthRb, width, x, y + i, zValues,NULL);
+ }
+ }
+ }
+
+ if (stencilMask != 0x0) {
+ GLstencil stencilValues[MAX_WIDTH];
+ /* get stencil values, with shift/offset/mapping */
+ _mesa_unpack_stencil_span(ctx, width, stencilType, stencilValues,
+ type, depthStencilSrc, &clippedUnpack,
+ ctx->_ImageTransferState);
+ if (zoom)
+ _swrast_write_zoomed_stencil_span(ctx, imgX, imgY, width,
+ x, y + i, stencilValues);
+ else
+ _swrast_write_stencil_span(ctx, width, x, y + i, stencilValues);
+ }
+ }
+ }
+}
+
+
+
+/**
+ * Execute software-based glDrawPixels.
+ * By time we get here, all error checking will have been done.
*/
void
_swrast_DrawPixels( GLcontext *ctx,
const GLvoid *pixels )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- (void) unpack;
+ RENDER_START(swrast,ctx);
+
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
if (swrast->NewState)
_swrast_validate_derived( ctx );
- RENDER_START(swrast,ctx);
+ if (unpack->BufferObj->Name) {
+ /* unpack from PBO */
+ GLubyte *buf;
+ if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
+ format, type, pixels)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels(invalid PBO access)");
+ goto end;
+ }
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ GL_READ_ONLY_ARB,
+ unpack->BufferObj);
+ if (!buf) {
+ /* buffer is already mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(PBO is mapped)");
+ goto end;
+ }
+ pixels = ADD_POINTERS(buf, pixels);
+ }
+
switch (format) {
case GL_STENCIL_INDEX:
- draw_stencil_pixels( ctx, x, y, width, height, type, pixels );
+ draw_stencil_pixels( ctx, x, y, width, height, type, unpack, pixels );
break;
case GL_DEPTH_COMPONENT:
- draw_depth_pixels( ctx, x, y, width, height, type, pixels );
+ draw_depth_pixels( ctx, x, y, width, height, type, unpack, pixels );
+ break;
+ case GL_COLOR_INDEX:
+ if (ctx->Visual.rgbMode)
+ draw_rgba_pixels(ctx, x,y, width, height, format, type, unpack, pixels);
+ else
+ draw_index_pixels(ctx, x, y, width, height, type, unpack, pixels);
+ break;
+ case GL_RED:
+ case GL_GREEN:
+ case GL_BLUE:
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_RGB:
+ case GL_BGR:
+ case GL_RGBA:
+ case GL_BGRA:
+ case GL_ABGR_EXT:
+ draw_rgba_pixels(ctx, x, y, width, height, format, type, unpack, pixels);
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ draw_depth_stencil_pixels(ctx, x, y, width, height,
+ type, unpack, pixels);
break;
+ default:
+ _mesa_problem(ctx, "unexpected format in _swrast_DrawPixels");
+ /* don't return yet, clean-up */
+ }
+
+end:
+
+ RENDER_FINISH(swrast,ctx);
+
+ if (unpack->BufferObj->Name) {
+ /* done with PBO so unmap it now */
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ unpack->BufferObj);
+ }
+}
+
+
+
+#if 0 /* experimental */
+/*
+ * Execute glDrawDepthPixelsMESA().
+ */
+void
+_swrast_DrawDepthPixelsMESA( GLcontext *ctx,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height,
+ GLenum colorFormat, GLenum colorType,
+ const GLvoid *colors,
+ GLenum depthType, const GLvoid *depths,
+ const struct gl_pixelstore_attrib *unpack )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (swrast->NewState)
+ _swrast_validate_derived( ctx );
+
+ RENDER_START(swrast,ctx);
+
+ switch (colorFormat) {
case GL_COLOR_INDEX:
if (ctx->Visual.rgbMode)
- draw_rgba_pixels(ctx, x,y, width, height, format, type, pixels);
+ draw_rgba_pixels(ctx, x,y, width, height, colorFormat, colorType,
+ unpack, colors);
else
- draw_index_pixels(ctx, x, y, width, height, type, pixels);
+ draw_index_pixels(ctx, x, y, width, height, colorType,
+ unpack, colors);
break;
case GL_RED:
case GL_GREEN:
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
- draw_rgba_pixels(ctx, x, y, width, height, format, type, pixels);
+ draw_rgba_pixels(ctx, x, y, width, height, colorFormat, colorType,
+ unpack, colors);
break;
default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glDrawPixels(format)" );
+ _mesa_problem(ctx, "unexpected format in glDrawDepthPixelsMESA");
}
RENDER_FINISH(swrast,ctx);
}
+#endif
projects / mesa.git / blobdiff