/*
* Mesa 3-D graphics library
- * Version: 6.5.2
+ * Version: 7.1
*
- * Copyright (C) 1999-2006 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 "s_zoom.h"
-/*
+
+/**
* 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 struct gl_pixelstore_attrib *unpack,
- 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);
- struct sw_span span;
-
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
-
- if (swrast->_RasterMask & MULTI_DRAW_BIT)
- return GL_FALSE;
-
- if (ctx->_ImageTransferState) {
- /* don't handle any pixel transfer options here */
+ 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 (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (swrast->_FogEnabled)
- _swrast_span_default_fog(ctx, &span);
- if (ctx->Texture._EnabledCoordUnits)
- _swrast_span_default_texcoords(ctx, &span);
-
- if ((swrast->_RasterMask & ~CLIP_BIT) == 0
- && ctx->Texture._EnabledCoordUnits == 0
- && unpack->Alignment == 1 /* XXX may not really need this */
- && !unpack->SwapBytes
- && !unpack->LsbFirst) {
-
- /* XXX there's a lot of clipping code here that should be replaced
- * by a call to _mesa_clip_drawpixels().
- */
- 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;
-
- 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 _swrast_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 {
- if (drawWidth > MAX_WIDTH)
- return GL_FALSE; /* fall back to general case path */
+ /* 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) {
- if (ctx->Visual.rgbMode) {
- const GLchan *src = (const 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++) {
- rb->PutRow(ctx, rb, drawWidth, destX, destY, 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--;
- rb->PutRow(ctx, rb, drawWidth, destX, destY, src, NULL);
- src += rowLength * 4;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- span.x = destX;
- span.y = destY + row;
- span.end = drawWidth;
- _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
- (CONST GLchan (*)[4]) src);
- src += rowLength * 4;
- }
+ 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) {
- if (ctx->Visual.rgbMode) {
- const GLchan *src = (const 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++) {
- rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, 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--;
- rb->PutRowRGB(ctx, rb, drawWidth, destX, destY, src, NULL);
- src += rowLength * 3;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- span.x = destX;
- span.y = destY;
- span.end = drawWidth;
- _swrast_write_zoomed_rgb_span(ctx, imgX, imgY, &span,
- (CONST GLchan (*)[3]) src);
- 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) {
- if (ctx->Visual.rgbMode) {
- const GLchan *src = (const 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++) {
- 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 += 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++) {
- 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];
- }
- destY--;
- rb->PutRow(ctx, rb, drawWidth, destX, destY, rgb, NULL);
- src += rowLength;
- }
- }
- 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,
- (CONST GLchan (*)[3]) rgb);
- 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) {
- if (ctx->Visual.rgbMode) {
- const GLchan *src = (const 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;
- 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 += 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;
- 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++;
- }
- destY--;
- rb->PutRow(ctx, rb, drawWidth, destX, destY,
- span.array->rgba, NULL);
- src += rowLength*2;
- }
- }
- 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,
- (CONST GLchan (*)[4]) span.array->rgba);
- 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) {
- const GLubyte *src =
- (const 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, span.array->rgba);
- rb->PutRow(ctx, rb, drawWidth, destX, destY,
- span.array->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, span.array->rgba);
- destY--;
- rb->PutRow(ctx, rb, drawWidth, destX, destY,
- span.array->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, span.array->rgba);
- span.x = destX;
- span.y = destY;
- span.end = drawWidth;
- _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
- (CONST GLchan (*)[4]) span.array->rgba);
- 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 {
- /* write CI data to CI frame buffer */
+ /* 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++) {
- 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 += 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;
}
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
const GLint imgX = x, imgY = y;
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
GLint row, skipPixels;
- struct sw_span span;
-
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
+ SWspan span;
- if (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (swrast->_FogEnabled)
- _swrast_span_default_fog(ctx, &span);
+ INIT_SPAN(span, GL_BITMAP);
+ span.arrayMask = SPAN_INDEX;
+ _swrast_span_default_attribs(ctx, &span);
/*
* General solution
width, height,
GL_COLOR_INDEX, type,
row, skipPixels);
- _mesa_unpack_index_span(ctx, spanWidth, destType, values,
- type, source, unpack,
- ctx->_ImageTransferState);
- if (ctx->_ImageTransferState & IMAGE_SHIFT_OFFSET_BIT) {
- _mesa_shift_and_offset_stencil(ctx, spanWidth, values);
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil(ctx, spanWidth, values);
- }
-
+ _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);
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
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;
- struct sw_span span;
+ SWspan span;
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
-
- _swrast_span_default_color(ctx, &span);
-
- if (swrast->_FogEnabled)
- _swrast_span_default_fog(ctx, &span);
- if (ctx->Texture._EnabledCoordUnits)
- _swrast_span_default_texcoords(ctx, &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) {
+ && width <= MAX_WIDTH
+ && !unpack->SwapBytes) {
/* Special case: directly write 16-bit depth values */
GLint row;
for (row = 0; row < height; row++) {
&& !scaleOrBias
&& !zoom
&& ctx->Visual.rgbMode
- && width <= MAX_WIDTH) {
+ && 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;
}
else {
/* General case */
- const GLfloat depthMax = ctx->DrawBuffer->_DepthMaxF;
+ const GLuint depthMax = ctx->DrawBuffer->_DepthMax;
GLint skipPixels = 0;
/* in case width > MAX_WIDTH do the copy in chunks */
-/*
+/**
* Draw RGBA image.
*/
static void
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels )
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
const GLint imgX = x, imgY = y;
- struct gl_renderbuffer *rb = NULL; /* only used for quickDraw path */
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- GLboolean quickDraw;
GLfloat *convImage = NULL;
- GLuint transferOps = ctx->_ImageTransferState;
- struct sw_span span;
-
- INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
+ GLbitfield transferOps = ctx->_ImageTransferState;
+ SWspan span;
/* Try an optimized glDrawPixels first */
- if (fast_draw_pixels(ctx, x, y, width, height, format, type, unpack, pixels))
+ if (fast_draw_rgba_pixels(ctx, x, y, width, height, format, type,
+ unpack, pixels)) {
return;
-
- if (ctx->Depth.Test)
- _swrast_span_default_z(ctx, &span);
- if (swrast->_FogEnabled)
- _swrast_span_default_fog(ctx, &span);
- if (ctx->Texture._EnabledCoordUnits)
- _swrast_span_default_texcoords(ctx, &span);
-
- if (swrast->_RasterMask == 0 && !zoom && x >= 0 && y >= 0
- && x + width <= (GLint) ctx->DrawBuffer->Width
- && y + height <= (GLint) ctx->DrawBuffer->Height
- && ctx->DrawBuffer->_NumColorDrawBuffers[0] == 1) {
- quickDraw = GL_TRUE;
- rb = ctx->DrawBuffer->_ColorDrawBuffers[0][0];
- }
- else {
- quickDraw = GL_FALSE;
- rb = NULL;
}
+ 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
* intermediate image, applying all pixel transfer operations
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
*/
{
+ 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;
- ASSERT(span.end <= MAX_WIDTH);
-
for (row = 0; row < height; row++) {
- const GLvoid *source = _mesa_image_address2d(unpack,
- pixels, width, height, format, 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;
- span.arrayMask = arrayMask;
- span.interpMask = interpMask;
-
- _mesa_unpack_color_span_chan(ctx, spanWidth, GL_RGBA,
- (GLchan *) span.array->rgba,
- format, type, source, unpack,
- transferOps);
-
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
-
+ /* 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 (quickDraw) {
- rb->PutRow(ctx, rb, span.end, span.x, span.y,
- span.array->rgba, NULL);
- }
- else if (zoom) {
- _swrast_write_zoomed_rgba_span(ctx, imgX, imgY, &span,
- (CONST GLchan (*)[4]) span.array->rgba);
- }
- else {
- _swrast_write_rgba_span(ctx, &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);
+ }
}
- }
+
+ source += srcStride;
+ } /* for row */
skipPixels += spanWidth;
- }
+ } /* while skipPixels < width */
+
+ /* XXX this is ugly/temporary, to undo above change */
+ span.array->ChanType = CHAN_TYPE;
}
if (convImage) {
const GLint imgX = x, imgY = y;
const GLboolean scaleOrBias
= ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
- const GLfloat depthScale = ctx->DrawBuffer->_DepthMaxF;
+ 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;
/* general case */
GLuint zValues[MAX_WIDTH]; /* 16 or 32-bit Z value storage */
_mesa_unpack_depth_span(ctx, width,
- depthRb->DataType, zValues, depthScale,
+ depthRb->DataType, zValues, depthMax,
type, depthStencilSrc, &clippedUnpack);
if (zoom) {
_swrast_write_zoomed_z_span(ctx, imgX, imgY, width, x,
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