-/* $Id: s_drawpix.c,v 1.25 2002/01/15 21:49:58 brianp Exp $ */
+/* $Id: s_drawpix.c,v 1.44 2003/01/16 18:57:44 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 5.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2003 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 "context.h"
#include "convolve.h"
#include "image.h"
#include "macros.h"
-#include "mem.h"
+#include "imports.h"
#include "mmath.h"
#include "pixel.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"
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
- GLchan rgb[MAX_WIDTH][3];
- GLchan rgba[MAX_WIDTH][4];
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
if (!ctx->Current.RasterPosValid) {
return GL_TRUE; /* no-op */
}
- if ((SWRAST_CONTEXT(ctx)->_RasterMask&(~(SCISSOR_BIT|WINCLIP_BIT)))==0
- && ctx->Texture._ReallyEnabled == 0
+ if (ctx->Depth.Test)
+ _mesa_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _mesa_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledUnits)
+ _mesa_span_default_texcoords(ctx, &span);
+
+ if ((SWRAST_CONTEXT(ctx)->_RasterMask & ~CLIP_BIT) == 0
+ && ctx->Texture._EnabledUnits == 0
&& unpack->Alignment == 1
&& !unpack->SwapBytes
&& !unpack->LsbFirst) {
/* 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);
+ if (drawWidth > MAX_WIDTH)
+ return GL_FALSE; /* fall back to general case path */
for (i=0; i<drawWidth; i++)
zSpan[i] = z;
/* 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);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) src, zoomY0, 0);
src += rowLength * 4;
destY++;
}
/* 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);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _mesa_write_zoomed_rgb_span(ctx, &span,
+ (CONST GLchan (*)[3]) src, zoomY0, 0);
src += rowLength * 3;
destY++;
}
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];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
destY++;
}
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];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
destY--;
(*swrast->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[3]) rgb, NULL);
+ (CONST GLchan (*)[3]) span.array->rgb, NULL);
src += rowLength;
}
}
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];
+ span.array->rgb[i][0] = src[i];
+ span.array->rgb[i][1] = src[i];
+ span.array->rgb[i][2] = src[i];
}
- _mesa_write_zoomed_rgb_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[3]) rgb, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _mesa_write_zoomed_rgb_span(ctx, &span,
+ (CONST GLchan (*)[3]) span.array->rgb, zoomY0, 0);
src += rowLength;
destY++;
}
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++;
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
destY++;
}
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++;
+ 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--;
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba, NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength*2;
}
}
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++;
+ span.array->rgba[i][0] = *ptr;
+ span.array->rgba[i][1] = *ptr;
+ span.array->rgba[i][2] = *ptr++;
+ span.array->rgba[i][3] = *ptr++;
}
- _mesa_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, 0, (CONST GLchan (*)[4]) rgba, zoomY0);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength*2;
destY++;
}
GLint row;
for (row=0; row<drawHeight; row++) {
ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (const GLchan (*)[4]) rgba,
- NULL);
+ (const GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength;
destY++;
}
GLint row;
for (row=0; row<drawHeight; row++) {
ASSERT(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
destY--;
(*swrast->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (CONST GLchan (*)[4]) rgba,
- NULL);
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
src += rowLength;
}
return GL_TRUE;
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);
+ _mesa_map_ci8_to_rgba(ctx, drawWidth, src, span.array->rgba);
+ span.x = destX;
+ span.y = destY;
+ span.end = drawWidth;
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, zoomY0, 0);
src += rowLength;
destY++;
}
/*
- * Do glDrawPixels of index pixels.
+ * Draw color index image.
*/
static void
draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
GLenum type, const GLvoid *pixels )
{
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint row, drawWidth;
- GLdepth zspan[MAX_WIDTH];
- GLfloat fogSpan[MAX_WIDTH];
+ GLint row, skipPixels;
+ struct sw_span span;
- drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_INDEX);
- /* Fragment depth values */
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- GLdepth zval = (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 < drawWidth; i++) {
- zspan[i] = zval;
- fogSpan[i] = fog;
- }
- }
+ if (ctx->Depth.Test)
+ _mesa_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _mesa_span_default_fog(ctx, &span);
/*
* General solution
*/
- for (row = 0; row < height; row++, y++) {
- GLuint indexes[MAX_WIDTH];
- 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, indexes,
- type, source, &ctx->Unpack,
- ctx->_ImageTransferState);
- if (zoom) {
- _mesa_write_zoomed_index_span(ctx, drawWidth, x, y, zspan, fogSpan,
- indexes, desty);
- }
- else {
- _old_write_index_span(ctx, drawWidth, x, y, zspan, fogSpan, indexes,
- NULL, GL_BITMAP);
+ skipPixels = 0;
+ while (skipPixels < width) {
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(spanEnd <= MAX_WIDTH);
+ for (row = 0; row < height; row++, span.y++) {
+ const GLvoid *source = _mesa_image_address(&ctx->Unpack, pixels,
+ width, height,
+ GL_COLOR_INDEX, type,
+ 0, row, skipPixels);
+ _mesa_unpack_index_span(ctx, span.end, GL_UNSIGNED_INT,
+ span.array->index, type, source, &ctx->Unpack,
+ ctx->_ImageTransferState);
+
+ /* These may get changed during writing/clipping */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+
+ if (zoom)
+ _mesa_write_zoomed_index_span(ctx, &span, y, skipPixels);
+ else
+ _mesa_write_index_span(ctx, &span);
}
+ skipPixels += spanEnd;
}
}
/*
- * 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,
{
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
const GLint desty = y;
- GLint row, drawWidth;
+ GLint row, skipPixels;
if (type != GL_BYTE &&
type != GL_UNSIGNED_BYTE &&
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 width > MAX_WIDTH, have to process image in chunks */
+ skipPixels = 0;
+ while (skipPixels < width) {
+ const GLint spanX = x;
+ GLint spanY = y;
+ const GLint spanWidth = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+
+ for (row = 0; row < height; row++, spanY++) {
+ 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, skipPixels);
+ _mesa_unpack_index_span(ctx, spanWidth, destType, values,
+ type, source, &ctx->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);
+ }
- 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 );
+ if (zoom) {
+ _mesa_write_zoomed_stencil_span(ctx, (GLuint) spanWidth,
+ spanX, spanY, values, desty, 0);
+ }
+ else {
+ _mesa_write_stencil_span(ctx, (GLuint) 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,
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;
- GLchan rgba[MAX_WIDTH][4];
- GLuint ispan[MAX_WIDTH];
- GLint drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_Z);
if (type != GL_BYTE
&& type != GL_UNSIGNED_BYTE
return;
}
- /* Colors or indexes */
- if (ctx->Visual.rgbMode) {
- GLint i;
- GLint r, g, b, a;
- UNCLAMPED_FLOAT_TO_CHAN(r, ctx->Current.RasterColor[0]);
- UNCLAMPED_FLOAT_TO_CHAN(g, ctx->Current.RasterColor[1]);
- UNCLAMPED_FLOAT_TO_CHAN(b, ctx->Current.RasterColor[2]);
- UNCLAMPED_FLOAT_TO_CHAN(a, ctx->Current.RasterColor[3]);
- for (i = 0; i < drawWidth; i++) {
- rgba[i][RCOMP] = r;
- rgba[i][GCOMP] = g;
- rgba[i][BCOMP] = b;
- rgba[i][ACOMP] = a;
- }
- }
- else {
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- ispan[i] = ctx->Current.RasterIndex;
- }
- }
+ _mesa_span_default_color(ctx, &span);
+
+ if (ctx->Fog.Enabled)
+ _mesa_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledUnits)
+ _mesa_span_default_texcoords(ctx, &span);
- if (type==GL_UNSIGNED_SHORT && sizeof(GLdepth)==sizeof(GLushort)
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
+ if (type == GL_UNSIGNED_SHORT && ctx->Visual.depthBits == 16
+ && !bias_or_scale && !zoom && ctx->Visual.rgbMode
+ && width < MAX_WIDTH) {
/* Special case: directly write 16-bit depth values */
GLint row;
- for (row = 0; row < height; row++, y++) {
- GLdepth zspan[MAX_WIDTH];
+ span.x = x;
+ span.y = y;
+ span.end = width;
+ for (row = 0; row < height; row++, span.y++) {
const GLushort *zptr = (const GLushort *)
_mesa_image_address(&ctx->Unpack, pixels, width, height,
GL_DEPTH_COMPONENT, type, 0, row, 0);
GLint i;
for (i = 0; i < width; i++)
- zspan[i] = zptr[i];
- _old_write_rgba_span(ctx, width, x, y, zspan, 0, rgba,
- NULL, GL_BITMAP);
+ span.array->z[i] = zptr[i];
+ _mesa_write_rgba_span(ctx, &span);
}
}
- else if (type==GL_UNSIGNED_INT && ctx->Visual.depthBits == 32
- && !bias_or_scale && !zoom && ctx->Visual.rgbMode) {
+ else if (type == GL_UNSIGNED_INT && ctx->Visual.depthBits == 32
+ && !bias_or_scale && !zoom && ctx->Visual.rgbMode
+ && width < MAX_WIDTH) {
/* Special case: directly write 32-bit depth values */
GLint row;
- for (row = 0; row < height; row++, y++) {
+ span.x = x;
+ span.y = y;
+ span.end = width;
+ for (row = 0; row < height; row++, span.y++) {
const GLuint *zptr = (const GLuint *)
_mesa_image_address(&ctx->Unpack, pixels, width, height,
GL_DEPTH_COMPONENT, type, 0, row, 0);
- _old_write_rgba_span(ctx, width, x, y, zptr, 0, rgba,
- NULL, GL_BITMAP);
+ MEMCPY(span.array->z, zptr, width * sizeof(GLdepth));
+ _mesa_write_rgba_span(ctx, &span);
}
}
else {
/* General case */
- GLint row;
- for (row = 0; row < height; row++, y++) {
- GLfloat fspan[MAX_WIDTH];
- GLdepth zspan[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++) {
- zspan[i] = (GLdepth) (fspan[i] * zs);
- }
- }
-
- if (ctx->Visual.rgbMode) {
- if (zoom) {
- _mesa_write_zoomed_rgba_span(ctx, width, x, y, zspan, 0,
- (const GLchan (*)[4]) rgba, desty);
- }
- else {
- _old_write_rgba_span(ctx, width, x, y, zspan, 0,
- rgba, NULL, GL_BITMAP);
+ GLint row, skipPixels = 0;
+
+ /* in case width > MAX_WIDTH do the copy in chunks */
+ while (skipPixels < width) {
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(span.end <= MAX_WIDTH);
+ for (row = 0; row < height; row++, spanY++) {
+ GLfloat floatSpan[MAX_WIDTH];
+ const GLvoid *src = _mesa_image_address(&ctx->Unpack,
+ pixels, width, height,
+ GL_DEPTH_COMPONENT, type,
+ 0, row, skipPixels);
+
+ /* Set these for each row since the _mesa_write_* function may
+ * change them while clipping.
+ */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+
+ _mesa_unpack_depth_span(ctx, span.end, floatSpan, type,
+ src, &ctx->Unpack);
+ /* clamp depth values to [0,1] and convert from floats to ints */
+ {
+ const GLfloat zs = ctx->DepthMaxF;
+ GLint i;
+ for (i = 0; i < span.end; i++) {
+ span.array->z[i] = (GLdepth) (floatSpan[i] * zs + 0.5F);
+ }
}
- }
- else {
- if (zoom) {
- _mesa_write_zoomed_index_span(ctx, width, x, y, zspan, 0,
- ispan, GL_BITMAP);
+ if (ctx->Visual.rgbMode) {
+ if (zoom) {
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (const GLchan (*)[4]) span.array->rgba,
+ desty, skipPixels);
+ }
+ else
+ _mesa_write_rgba_span(ctx, &span);
}
else {
- _old_write_index_span(ctx, width, x, y, zspan, 0,
- ispan, NULL, GL_BITMAP);
+ if (zoom)
+ _mesa_write_zoomed_index_span(ctx, &span, desty, 0);
+ else
+ _mesa_write_index_span(ctx, &span);
}
}
-
+ skipPixels += spanEnd;
}
}
}
+
/*
- * Do glDrawPixels of RGBA pixels.
+ * Draw RGBA image.
*/
static void
draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
const GLint desty = y;
- GLdepth zspan[MAX_WIDTH];
- GLfloat fogSpan[MAX_WIDTH];
GLboolean quickDraw;
GLfloat *convImage = NULL;
GLuint transferOps = ctx->_ImageTransferState;
+ struct sw_span span;
+
+ INIT_SPAN(span, GL_BITMAP, 0, 0, SPAN_RGBA);
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawPixels(format or type)");
if (fast_draw_pixels(ctx, x, y, width, height, format, type, 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++) {
- zspan[i] = z;
- fogSpan[i] = fog;
- }
- }
-
+ if (ctx->Depth.Test)
+ _mesa_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _mesa_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledUnits)
+ _mesa_span_default_texcoords(ctx, &span);
if (SWRAST_CONTEXT(ctx)->_RasterMask == 0 && !zoom && x >= 0 && y >= 0
- && x + width <= ctx->DrawBuffer->Width
- && y + height <= ctx->DrawBuffer->Height) {
+ && x + width <= (GLint) ctx->DrawBuffer->Width
+ && y + height <= (GLint) ctx->DrawBuffer->Height) {
quickDraw = GL_TRUE;
}
else {
* General solution
*/
{
- GLchan rgba[MAX_WIDTH][4];
- 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);
- _mesa_unpack_chan_color_span(ctx, width, GL_RGBA, (GLchan *) rgba,
- format, type, source, unpack,
- transferOps);
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
-
- if (ctx->Texture._ReallyEnabled && ctx->Pixel.PixelTextureEnabled) {
- GLchan primary_rgba[MAX_WIDTH][4];
- GLuint unit;
-
- DEFMARRAY(GLfloat, texcoord, MAX_WIDTH, 4);/* mac 32k limitation */
- CHECKARRAY(texcoord, return); /* mac 32k limitation */
-
- /* XXX not sure how multitexture is supposed to work here */
- MEMCPY(primary_rgba, rgba, 4 * width * sizeof(GLchan));
-
- for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
- if (ctx->Texture.Unit[unit]._ReallyEnabled) {
- _mesa_pixeltexgen(ctx, width, (const GLchan (*)[4]) rgba,
- texcoord);
- _old_swrast_texture_fragments( ctx, unit, width,
- texcoord, NULL,
- (CONST GLchan (*)[4]) primary_rgba,
- rgba);
- }
+ const GLuint interpMask = span.interpMask;
+ const GLuint arrayMask = span.arrayMask;
+ GLint row, skipPixels = 0;
+
+ /* if the span is wider than MAX_WIDTH we have to do it in chunks */
+ while (skipPixels < width) {
+ const GLint spanX = x + (zoom ? 0 : skipPixels);
+ GLint spanY = y;
+ const GLint spanEnd = (width - skipPixels > MAX_WIDTH)
+ ? MAX_WIDTH : (width - skipPixels);
+ ASSERT(span.end <= MAX_WIDTH);
+
+ for (row = 0; row < height; row++, spanY++) {
+ const GLvoid *source = _mesa_image_address(unpack,
+ pixels, width, height, format, type, 0, row, skipPixels);
+
+ /* Set these for each row since the _mesa_write_* function may
+ * change them while clipping.
+ */
+ span.x = spanX;
+ span.y = spanY;
+ span.end = spanEnd;
+ span.arrayMask = arrayMask;
+ span.interpMask = interpMask;
+
+ _mesa_unpack_chan_color_span(ctx, span.end, 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;
+
+ if (ctx->Pixel.PixelTextureEnabled && ctx->Texture._EnabledUnits) {
+ _swrast_pixel_texture(ctx, &span);
}
- UNDEFARRAY(texcoord); /* mac 32k limitation */
- }
- if (quickDraw) {
- (*swrast->Driver.WriteRGBASpan)(ctx, width, x, y,
- (CONST GLchan (*)[4]) rgba, NULL);
- }
- else if (zoom) {
- _mesa_write_zoomed_rgba_span(ctx, width, x, y, zspan, fogSpan,
- (CONST GLchan (*)[4]) rgba, desty);
- }
- else {
- _old_write_rgba_span(ctx, (GLuint) width, x, y, zspan, fogSpan,
- rgba, NULL, GL_BITMAP);
+ /* draw the span */
+ if (quickDraw) {
+ (*swrast->Driver.WriteRGBASpan)(ctx, span.end, span.x, span.y,
+ (CONST GLchan (*)[4]) span.array->rgba, NULL);
+ }
+ else if (zoom) {
+ _mesa_write_zoomed_rgba_span(ctx, &span,
+ (CONST GLchan (*)[4]) span.array->rgba, desty, skipPixels);
+ }
+ else {
+ _mesa_write_rgba_span(ctx, &span);
+ }
}
+
+ skipPixels += spanEnd;
}
}
SWcontext *swrast = SWRAST_CONTEXT(ctx);
(void) unpack;
-
if (swrast->NewState)
_swrast_validate_derived( ctx );
RENDER_FINISH(swrast,ctx);
}
+
+
+
+#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);
+ (void) unpack;
+
+ 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, colorFormat, colorType, colors);
+ else
+ draw_index_pixels(ctx, x, y, width, height, colorType, colors);
+ 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, colorFormat, colorType, colors);
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM,
+ "glDrawDepthPixelsMESA(colorFormat)" );
+ }
+
+ RENDER_FINISH(swrast,ctx);
+}
+#endif
projects / mesa.git / blobdiff