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0fa8c59e646b214ea61c077f723e8ffe1cc06733
third_party_mesa3d/src/mesa/drivers/x11/xm_dd.c
Brian Paul 0fa8c59e64 Updates for GL_EXT_timer_query: 
New GLint64EXT and GLuint64EXT types (use C99's long long types).
New glGetQueryObject[u]i64vEXT() functions.
2005-12-07 14:48:19 +00:00

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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 1999-2005 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glxheader.h"
#include "bufferobj.h"
#include "buffers.h"
#include "context.h"
#include "colormac.h"
#include "depth.h"
#include "drawpix.h"
#include "extensions.h"
#include "framebuffer.h"
#include "macros.h"
#include "image.h"
#include "imports.h"
#include "mtypes.h"
#include "state.h"
#include "texobj.h"
#include "teximage.h"
#include "texstore.h"
#include "texformat.h"
#include "xmesaP.h"
#include "array_cache/acache.h"
#include "swrast/swrast.h"
#include "swrast/s_context.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#ifdef XFree86Server
#include <GL/glxtokens.h>
#endif
/*
* Dithering kernels and lookup tables.
*/
const int xmesa_kernel8[DITH_DY * DITH_DX] = {
0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC,
12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC,
3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC,
15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC,
};
const short xmesa_HPCR_DRGB[3][2][16] = {
{
{ 16, -4, 1,-11, 14, -6, 3, -9, 15, -5, 2,-10, 13, -7, 4, -8},
{-15, 5, 0, 12,-13, 7, -2, 10,-14, 6, -1, 11,-12, 8, -3, 9}
},
{
{-11, 15, -7, 3, -8, 14, -4, 2,-10, 16, -6, 4, -9, 13, -5, 1},
{ 12,-14, 8, -2, 9,-13, 5, -1, 11,-15, 7, -3, 10,-12, 6, 0}
},
{
{ 6,-18, 26,-14, 2,-22, 30,-10, 8,-16, 28,-12, 4,-20, 32, -8},
{ -4, 20,-24, 16, 0, 24,-28, 12, -6, 18,-26, 14, -2, 22,-30, 10}
}
};
const int xmesa_kernel1[16] = {
0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */
6*47, 2*47, 14*47, 8*47,
10*47, 1*47, 5*47, 11*47,
7*47, 13*47, 3*47, 15*47
};
/*
* Return the size (width, height) of the X window for the given GLframebuffer.
* Output: width - width of buffer in pixels.
* height - height of buffer in pixels.
*/
static void
get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height )
{
/* We can do this cast because the first field in the XMesaBuffer
* struct is a GLframebuffer struct. If this weren't true, we'd
* need a pointer from the GLframebuffer to the XMesaBuffer.
*/
const XMesaBuffer xmBuffer = (XMesaBuffer) buffer;
unsigned int winwidth, winheight;
#ifdef XFree86Server
/* XFree86 GLX renderer */
winwidth = MIN2(xmBuffer->frontxrb->drawable->width, MAX_WIDTH);
winheight = MIN2(xmBuffer->frontxrb->drawable->height, MAX_HEIGHT);
#else
Window root;
int winx, winy;
unsigned int bw, d;
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync(xmBuffer->xm_visual->display, 0); /* added for Chromium */
XGetGeometry( xmBuffer->xm_visual->display, xmBuffer->frontxrb->pixmap,
&root, &winx, &winy, &winwidth, &winheight, &bw, &d );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
#endif
*width = winwidth;
*height = winheight;
}
static void
finish_or_flush( GLcontext *ctx )
{
#ifdef XFree86Server
/* NOT_NEEDED */
#else
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
if (xmesa) {
_glthread_LOCK_MUTEX(_xmesa_lock);
XSync( xmesa->display, False );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
}
#endif
}
static void
clear_index( GLcontext *ctx, GLuint index )
{
if (ctx->DrawBuffer->Name == 0) {
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
xmesa->clearpixel = (unsigned long) index;
XMesaSetForeground( xmesa->display, xmbuf->cleargc, (unsigned long) index );
}
}
static void
clear_color( GLcontext *ctx, const GLfloat color[4] )
{
if (ctx->DrawBuffer->Name == 0) {
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
xmesa->clearpixel = xmesa_color_to_pixel( ctx,
xmesa->clearcolor[0],
xmesa->clearcolor[1],
xmesa->clearcolor[2],
xmesa->clearcolor[3],
xmesa->xm_visual->undithered_pf );
_glthread_LOCK_MUTEX(_xmesa_lock);
XMesaSetForeground( xmesa->display, xmbuf->cleargc,
xmesa->clearpixel );
_glthread_UNLOCK_MUTEX(_xmesa_lock);
}
}
/* Set index mask ala glIndexMask */
static void
index_mask( GLcontext *ctx, GLuint mask )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
/* not sure this conditional is really needed */
if (xmbuf->backxrb && xmbuf->backxrb->pixmap) {
unsigned long m;
if (mask==0xffffffff) {
m = ((unsigned long)~0L);
}
else {
m = (unsigned long) mask;
}
XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m );
XMesaSetPlaneMask( xmesa->display, xmbuf->gc, m );
}
}
/* Implements glColorMask() */
static void
color_mask(GLcontext *ctx,
GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
const int xclass = xmesa->xm_visual->mesa_visual.visualType;
(void) amask;
if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
unsigned long m;
if (rmask && gmask && bmask) {
m = ((unsigned long)~0L);
}
else {
m = 0;
if (rmask) m |= GET_REDMASK(xmesa->xm_visual);
if (gmask) m |= GET_GREENMASK(xmesa->xm_visual);
if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual);
}
XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m );
XMesaSetPlaneMask( xmesa->display, xmbuf->gc, m );
}
}
/**********************************************************************/
/*** glClear implementations ***/
/**********************************************************************/
/**
* Clear the front or back color buffer, if it's implemented with a pixmap.
*/
static void
clear_pixmap(GLcontext *ctx, struct xmesa_renderbuffer *xrb, GLboolean all,
GLint x, GLint y, GLint width, GLint height)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
assert(xmbuf);
assert(xrb->pixmap);
assert(xmesa);
assert(xmesa->display);
assert(xrb->pixmap);
assert(xmbuf->cleargc);
if (all) {
XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc,
0, 0, xrb->Base.Width + 1, xrb->Base.Height + 1 );
}
else {
XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc,
x, xrb->Base.Height - y - height,
width, height );
}
}
static void
clear_8bit_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
if (all) {
const size_t n = xrb->ximage->bytes_per_line * xrb->Base.Height;
MEMSET( xrb->ximage->data, xmesa->clearpixel, n );
}
else {
GLint i;
for (i=0;i<height;i++) {
GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i);
MEMSET( ptr, xmesa->clearpixel, width );
}
}
}
static void
clear_HPCR_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
if (all) {
GLint i, c16 = (xrb->ximage->bytes_per_line>>4)<<4;
GLubyte *ptr = (GLubyte *) xrb->ximage->data;
for (i = 0; i < xrb->Base.Height; i++) {
GLint j;
GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0];
if (i&1) {
sptr += 16;
}
for (j=0; j<c16; j+=16) {
ptr[0] = sptr[0];
ptr[1] = sptr[1];
ptr[2] = sptr[2];
ptr[3] = sptr[3];
ptr[4] = sptr[4];
ptr[5] = sptr[5];
ptr[6] = sptr[6];
ptr[7] = sptr[7];
ptr[8] = sptr[8];
ptr[9] = sptr[9];
ptr[10] = sptr[10];
ptr[11] = sptr[11];
ptr[12] = sptr[12];
ptr[13] = sptr[13];
ptr[14] = sptr[14];
ptr[15] = sptr[15];
ptr += 16;
}
for (; j < xrb->ximage->bytes_per_line; j++) {
*ptr = sptr[j&15];
ptr++;
}
}
}
else {
GLint i;
for (i=y; i<y+height; i++) {
GLubyte *ptr = PIXEL_ADDR1( xrb, x, i );
int j;
const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0];
if (i&1) {
sptr += 16;
}
for (j=x; j<x+width; j++) {
*ptr = sptr[j&15];
ptr++;
}
}
}
}
static void
clear_16bit_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
register GLuint pixel = (GLuint) xmesa->clearpixel;
if (xmesa->swapbytes) {
pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00);
}
if (all) {
GLuint *ptr4 = (GLuint *) xrb->ximage->data;
if ((pixel & 0xff) == ((pixel >> 8) & 0xff)) {
/* low and high bytes are equal so use memset() */
const GLuint n = xrb->ximage->bytes_per_line * xrb->Base.Height;
MEMSET( ptr4, pixel & 0xff, n );
}
else {
const GLuint n = xrb->ximage->bytes_per_line * xrb->Base.Height / 4;
GLuint i;
pixel = pixel | (pixel<<16);
for (i = 0; i < n; i++) {
ptr4[i] = pixel;
}
ptr4 += n;
/* might be one last GLushort to set */
if ((xrb->ximage->bytes_per_line * xrb->Base.Height) & 0x2)
*(GLushort *)ptr4 = pixel & 0xffff;
}
}
else {
GLint i, j;
for (j=0;j<height;j++) {
GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j);
for (i=0;i<width;i++) {
*ptr2++ = pixel;
}
}
}
}
/* Optimized code provided by Nozomi Ytow <noz@xfree86.org> */
static void
clear_24bit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
const GLubyte r = xmesa->clearcolor[0];
const GLubyte g = xmesa->clearcolor[1];
const GLubyte b = xmesa->clearcolor[2];
if (all) {
if (r == g && g == b) {
/* same value for all three components (gray) */
const GLint w3 = xrb->Base.Width * 3;
const GLint h = xrb->Base.Height;
GLint i;
for (i = 0; i < h; i++) {
bgr_t *ptr3 = PIXEL_ADDR3(xrb, 0, i);
MEMSET(ptr3, r, w3);
}
}
else {
/* the usual case */
const GLint w = xrb->Base.Width;
const GLint h = xrb->Base.Height;
GLint i, j;
for (i = 0; i < h; i++) {
bgr_t *ptr3 = PIXEL_ADDR3(xrb, 0, i);
for (j = 0; j < w; j++) {
ptr3->r = r;
ptr3->g = g;
ptr3->b = b;
ptr3++;
}
}
}
}
else {
/* only clear subrect of color buffer */
if (r == g && g == b) {
/* same value for all three components (gray) */
GLint j;
for (j=0;j<height;j++) {
bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
MEMSET(ptr3, r, 3 * width);
}
}
else {
/* non-gray clear color */
GLint i, j;
for (j = 0; j < height; j++) {
bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j);
for (i = 0; i < width; i++) {
ptr3->r = r;
ptr3->g = g;
ptr3->b = b;
ptr3++;
}
}
}
}
}
static void
clear_32bit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
register GLuint pixel = (GLuint) xmesa->clearpixel;
if (xmesa->swapbytes) {
pixel = ((pixel >> 24) & 0x000000ff)
| ((pixel >> 8) & 0x0000ff00)
| ((pixel << 8) & 0x00ff0000)
| ((pixel << 24) & 0xff000000);
}
if (all) {
const GLuint n = xrb->Base.Width * xrb->Base.Height;
GLuint *ptr4 = (GLuint *) xrb->ximage->data;
if (pixel == 0) {
_mesa_memset(ptr4, pixel, 4 * n);
}
else {
GLuint i;
for (i = 0; i < n; i++)
ptr4[i] = pixel;
}
}
else {
GLint i, j;
for (j = 0; j < height; j++) {
GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j);
for (i = 0; i < width; i++) {
ptr4[i] = pixel;
}
}
}
}
static void
clear_nbit_ximage(GLcontext *ctx, struct xmesa_renderbuffer *xrb,
GLboolean all, GLint x, GLint y, GLint width, GLint height)
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
XMesaImage *img = xrb->ximage;
GLint i, j;
/* We can ignore 'all' here - x, y, width, height are always right */
(void) all;
/* TODO: optimize this */
y = YFLIP(xrb, y);
for (j = 0; j < height; j++) {
for (i = 0; i < width; i++) {
XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel);
}
}
}
static void
clear_buffers( GLcontext *ctx, GLbitfield mask,
GLboolean all, GLint x, GLint y, GLint width, GLint height )
{
if (ctx->DrawBuffer->Name == 0) {
/* this is a window system framebuffer */
const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
XMesaBuffer b = (XMesaBuffer) ctx->DrawBuffer;
/* we can't handle color or index masking */
if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
if (mask & BUFFER_BIT_FRONT_LEFT) {
/* clear front color buffer */
if (b->frontxrb == (struct xmesa_renderbuffer *)
ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
/* renderbuffer is not wrapped - great! */
b->frontxrb->clearFunc(ctx, b->frontxrb, all, x, y,
width, height);
mask &= ~BUFFER_BIT_FRONT_LEFT;
}
else {
/* we can't directly clear an alpha-wrapped color buffer */
}
}
if (mask & BUFFER_BIT_BACK_LEFT) {
/* clear back color buffer */
if (b->backxrb == (struct xmesa_renderbuffer *)
ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer) {
/* renderbuffer is not wrapped - great! */
b->backxrb->clearFunc(ctx, b->backxrb, all, x, y,
width, height);
mask &= ~BUFFER_BIT_BACK_LEFT;
}
}
}
}
if (mask)
_swrast_Clear( ctx, mask, all, x, y, width, height );
}
/**
* Called by ctx->Driver.ResizeBuffers()
* Resize the front/back colorbuffers to match the latest window size.
*/
void
xmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer,
GLuint width, GLuint height)
{
/* We can do this cast because the first field in the XMesaBuffer
* struct is a GLframebuffer struct. If this weren't true, we'd
* need a pointer from the GLframebuffer to the XMesaBuffer.
*/
XMesaBuffer xmBuffer = (XMesaBuffer) buffer;
xmesa_alloc_back_buffer(xmBuffer, width, height);
_mesa_resize_framebuffer(ctx, buffer, width, height);
}
#ifndef XFree86Server
/* XXX this was never tested in the Xserver environment */
/**
* This function implements glDrawPixels() with an XPutImage call when
* drawing to the front buffer (X Window drawable).
* The image format must be GL_BGRA to match the PF_8R8G8B pixel format.
*/
static void
xmesa_DrawPixels_8R8G8B( GLcontext *ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels )
{
struct xmesa_renderbuffer *xrb
= (struct xmesa_renderbuffer *) ctx->DrawBuffer->_ColorDrawBuffers[0][0];
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
const SWcontext *swrast = SWRAST_CONTEXT( ctx );
XMesaDisplay *dpy = xmesa->xm_visual->display;
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
const XMesaGC gc = xmbuf->gc;
ASSERT(dpy);
ASSERT(gc);
ASSERT(xmesa->xm_visual->dithered_pf == PF_8R8G8B);
ASSERT(xmesa->xm_visual->undithered_pf == PF_8R8G8B);
if (swrast->NewState)
_swrast_validate_derived( ctx );
if (xrb->pixmap &&
format == GL_BGRA &&
type == GL_UNSIGNED_BYTE &&
(swrast->_RasterMask & ~CLIP_BIT) == 0 && /* no blend, z-test, etc */
ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */
ctx->Pixel.ZoomX == 1.0 && /* no zooming */
ctx->Pixel.ZoomY == 1.0) {
int dstX = x;
int dstY = y;
int w = width;
int h = height;
struct gl_pixelstore_attrib clippedUnpack = *unpack;
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)");
return;
}
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)");
return;
}
pixels = ADD_POINTERS(buf, pixels);
}
if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
/* This is a little tricky since all coordinates up to now have
* been in the OpenGL bottom-to-top orientation. X is top-to-bottom
* so we have to carefully compute the Y coordinates/addresses here.
*/
int srcX = clippedUnpack.SkipPixels;
int srcY = clippedUnpack.SkipRows;
int rowLength = clippedUnpack.RowLength;
XMesaImage ximage;
MEMSET(&ximage, 0, sizeof(XMesaImage));
ximage.width = width;
ximage.height = height;
ximage.format = ZPixmap;
ximage.data = (char *) pixels
+ ((srcY + h - 1) * rowLength + srcX) * 4;
ximage.byte_order = LSBFirst;
ximage.bitmap_unit = 32;
ximage.bitmap_bit_order = LSBFirst;
ximage.bitmap_pad = 32;
ximage.depth = 24;
ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */
ximage.bits_per_pixel = 32;
/* it seems we don't need to set the ximage.red/green/blue_mask fields */
/* flip Y axis for dest position */
dstY = YFLIP(xrb, dstY) - h + 1;
XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
}
if (unpack->BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
unpack->BufferObj);
}
}
else {
/* software fallback */
_swrast_DrawPixels(ctx, x, y, width, height,
format, type, unpack, pixels);
}
}
/**
* This function implements glDrawPixels() with an XPutImage call when
* drawing to the front buffer (X Window drawable). The image format
* must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to
* match the PF_5R6G5B pixel format.
*/
static void
xmesa_DrawPixels_5R6G5B( GLcontext *ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels )
{
struct xmesa_renderbuffer *xrb
= (struct xmesa_renderbuffer *) ctx->DrawBuffer->_ColorDrawBuffers[0][0];
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
const SWcontext *swrast = SWRAST_CONTEXT( ctx );
XMesaDisplay *dpy = xmesa->xm_visual->display;
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
const XMesaGC gc = xmbuf->gc;
ASSERT(dpy);
ASSERT(gc);
ASSERT(xmesa->xm_visual->undithered_pf == PF_5R6G5B);
if (swrast->NewState)
_swrast_validate_derived( ctx );
if (xrb->pixmap &&
format == GL_RGB &&
type == GL_UNSIGNED_SHORT_5_6_5 &&
!ctx->Color.DitherFlag && /* no dithering */
(swrast->_RasterMask & ~CLIP_BIT) == 0 && /* no blend, z-test, etc */
ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */
ctx->Pixel.ZoomX == 1.0 && /* no zooming */
ctx->Pixel.ZoomY == 1.0) {
int dstX = x;
int dstY = y;
int w = width;
int h = height;
struct gl_pixelstore_attrib clippedUnpack = *unpack;
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)");
return;
}
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)");
return;
}
pixels = ADD_POINTERS(buf, pixels);
}
if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) {
/* This is a little tricky since all coordinates up to now have
* been in the OpenGL bottom-to-top orientation. X is top-to-bottom
* so we have to carefully compute the Y coordinates/addresses here.
*/
int srcX = clippedUnpack.SkipPixels;
int srcY = clippedUnpack.SkipRows;
int rowLength = clippedUnpack.RowLength;
XMesaImage ximage;
MEMSET(&ximage, 0, sizeof(XMesaImage));
ximage.width = width;
ximage.height = height;
ximage.format = ZPixmap;
ximage.data = (char *) pixels
+ ((srcY + h - 1) * rowLength + srcX) * 2;
ximage.byte_order = LSBFirst;
ximage.bitmap_unit = 16;
ximage.bitmap_bit_order = LSBFirst;
ximage.bitmap_pad = 16;
ximage.depth = 16;
ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */
ximage.bits_per_pixel = 16;
/* it seems we don't need to set the ximage.red/green/blue_mask fields */
/* flip Y axis for dest position */
dstY = YFLIP(xrb, dstY) - h + 1;
XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h);
}
if (unpack->BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
unpack->BufferObj);
}
}
else {
/* software fallback */
_swrast_DrawPixels(ctx, x, y, width, height,
format, type, unpack, pixels);
}
}
/**
* Implement glCopyPixels for the front color buffer (or back buffer Pixmap)
* for the color buffer. Don't support zooming, pixel transfer, etc.
* We do support copying from one window to another, ala glXMakeCurrentRead.
*/
static void
xmesa_CopyPixels( GLcontext *ctx,
GLint srcx, GLint srcy, GLsizei width, GLsizei height,
GLint destx, GLint desty, GLenum type )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
const SWcontext *swrast = SWRAST_CONTEXT( ctx );
XMesaDisplay *dpy = xmesa->xm_visual->display;
const XMesaGC gc = ((XMesaBuffer) ctx->DrawBuffer)->gc;
struct xmesa_renderbuffer *srcXrb = (struct xmesa_renderbuffer *)
ctx->ReadBuffer->_ColorReadBuffer;
struct xmesa_renderbuffer *dstXrb = (struct xmesa_renderbuffer *)
ctx->DrawBuffer->_ColorDrawBuffers[0][0];
ASSERT(dpy);
ASSERT(gc);
if (swrast->NewState)
_swrast_validate_derived( ctx );
if (ctx->Color.DrawBuffer[0] == GL_FRONT &&
ctx->Pixel.ReadBuffer == GL_FRONT &&
srcXrb->pixmap &&
dstXrb->pixmap &&
type == GL_COLOR &&
(swrast->_RasterMask & ~CLIP_BIT) == 0 && /* no blend, z-test, etc */
ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */
ctx->Pixel.ZoomX == 1.0 && /* no zooming */
ctx->Pixel.ZoomY == 1.0) {
/* Note: we don't do any special clipping work here. We could,
* but X will do it for us.
*/
srcy = YFLIP(srcXrb, srcy) - height + 1;
desty = YFLIP(dstXrb, desty) - height + 1;
XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc,
srcx, srcy, width, height, destx, desty);
}
else {
_swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type );
}
}
#endif /* XFree86Server */
/*
* Every driver should implement a GetString function in order to
* return a meaningful GL_RENDERER string.
*/
static const GLubyte *
get_string( GLcontext *ctx, GLenum name )
{
(void) ctx;
switch (name) {
case GL_RENDERER:
#ifdef XFree86Server
return (const GLubyte *) "Mesa GLX Indirect";
#else
return (const GLubyte *) "Mesa X11";
#endif
case GL_VENDOR:
#ifdef XFree86Server
return (const GLubyte *) "Mesa project: www.mesa3d.org";
#else
return NULL;
#endif
default:
return NULL;
}
}
/*
* We implement the glEnable function only because we care about
* dither enable/disable.
*/
static void
enable( GLcontext *ctx, GLenum pname, GLboolean state )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
switch (pname) {
case GL_DITHER:
if (state)
xmesa->pixelformat = xmesa->xm_visual->dithered_pf;
else
xmesa->pixelformat = xmesa->xm_visual->undithered_pf;
break;
default:
; /* silence compiler warning */
}
}
static void
clear_color_HPCR_ximage( GLcontext *ctx, const GLfloat color[4] )
{
int i;
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
/* black is black */
MEMSET( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 ,
sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern));
}
else {
/* build clear pattern */
for (i=0; i<16; i++) {
xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] =
DITHER_HPCR(i, 0,
xmesa->clearcolor[0],
xmesa->clearcolor[1],
xmesa->clearcolor[2]);
xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] =
DITHER_HPCR(i, 1,
xmesa->clearcolor[0],
xmesa->clearcolor[1],
xmesa->clearcolor[2]);
}
}
}
static void
clear_color_HPCR_pixmap( GLcontext *ctx, const GLfloat color[4] )
{
int i;
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]);
CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]);
if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) {
/* black is black */
for (i=0; i<16; i++) {
XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0);
XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0);
}
}
else {
for (i=0; i<16; i++) {
XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0,
DITHER_HPCR(i, 0,
xmesa->clearcolor[0],
xmesa->clearcolor[1],
xmesa->clearcolor[2]));
XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1,
DITHER_HPCR(i, 1,
xmesa->clearcolor[0],
xmesa->clearcolor[1],
xmesa->clearcolor[2]));
}
}
/* change tile pixmap content */
XMesaPutImage(xmesa->display,
(XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap,
XMESA_BUFFER(ctx->DrawBuffer)->cleargc,
xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2);
}
/**
* Called when the driver should update it's state, based on the new_state
* flags.
*/
void
xmesa_update_state( GLcontext *ctx, GLuint new_state )
{
const XMesaContext xmesa = XMESA_CONTEXT(ctx);
struct xmesa_renderbuffer *front_xrb, *back_xrb;
/* Propagate statechange information to swrast and swrast_setup
* modules. The X11 driver has no internal GL-dependent state.
*/
_swrast_InvalidateState( ctx, new_state );
_ac_InvalidateState( ctx, new_state );
_tnl_InvalidateState( ctx, new_state );
_swsetup_InvalidateState( ctx, new_state );
if (ctx->DrawBuffer->Name != 0)
return;
front_xrb = XMESA_BUFFER(ctx->DrawBuffer)->frontxrb;
if (front_xrb) {
/* XXX check for relevant new_state flags */
xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat,
xmesa->xm_visual->BitsPerPixel);
/* setup pointers to front and back buffer clear functions */
front_xrb->clearFunc = clear_pixmap;
}
back_xrb = XMESA_BUFFER(ctx->DrawBuffer)->backxrb;
if (back_xrb) {
XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
/* XXX check for relevant new_state flags */
xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat,
xmesa->xm_visual->BitsPerPixel);
if (xmbuf->backxrb->pixmap) {
back_xrb->clearFunc = clear_pixmap;
}
else {
switch (xmesa->xm_visual->BitsPerPixel) {
case 8:
if (xmesa->xm_visual->hpcr_clear_flag) {
back_xrb->clearFunc = clear_HPCR_ximage;
}
else {
back_xrb->clearFunc = clear_8bit_ximage;
}
break;
case 16:
back_xrb->clearFunc = clear_16bit_ximage;
break;
case 24:
back_xrb->clearFunc = clear_24bit_ximage;
break;
case 32:
back_xrb->clearFunc = clear_32bit_ximage;
break;
default:
back_xrb->clearFunc = clear_nbit_ximage;
break;
}
}
}
if (xmesa->xm_visual->hpcr_clear_flag) {
/* this depends on whether we're drawing to the front or back buffer */
/* XXX FIX THIS! */
#if 0
if (pixmap) {
ctx->Driver.ClearColor = clear_color_HPCR_pixmap;
}
else {
ctx->Driver.ClearColor = clear_color_HPCR_ximage;
}
#else
(void) clear_color_HPCR_pixmap;
(void) clear_color_HPCR_ximage;
#endif
}
}
/**
* Called via ctx->Driver.TestProxyTeximage(). Normally, we'd just use
* the _mesa_test_proxy_teximage() fallback function, but we're going to
* special-case the 3D texture case to allow textures up to 512x512x32
* texels.
*/
static GLboolean
test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level,
GLint internalFormat, GLenum format, GLenum type,
GLint width, GLint height, GLint depth, GLint border)
{
if (target == GL_PROXY_TEXTURE_3D) {
/* special case for 3D textures */
if (width * height * depth > 512 * 512 * 64 ||
width < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(width - 2 * border) != 1) ||
height < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(height - 2 * border) != 1) ||
depth < 2 * border ||
(!ctx->Extensions.ARB_texture_non_power_of_two &&
_mesa_bitcount(depth - 2 * border) != 1)) {
/* Bad size, or too many texels */
return GL_FALSE;
}
return GL_TRUE;
}
else {
/* use the fallback routine for 1D, 2D, cube and rect targets */
return _mesa_test_proxy_teximage(ctx, target, level, internalFormat,
format, type, width, height, depth,
border);
}
}
/**
* In SW, we don't really compress GL_COMPRESSED_RGB[A] textures!
*/
static const struct gl_texture_format *
choose_tex_format( GLcontext *ctx, GLint internalFormat,
GLenum format, GLenum type )
{
switch (internalFormat) {
case GL_COMPRESSED_RGB_ARB:
return &_mesa_texformat_rgb;
case GL_COMPRESSED_RGBA_ARB:
return &_mesa_texformat_rgba;
default:
return _mesa_choose_tex_format(ctx, internalFormat, format, type);
}
}
/**
* Get the current drawing (and reading) window's size and update the
* corresponding gl_framebuffer(s) if needed.
*/
static void
update_framebuffer_size(GLcontext *ctx)
{
struct gl_framebuffer *fb = ctx->WinSysDrawBuffer;
GLuint newWidth, newHeight;
get_buffer_size(fb, &newWidth, &newHeight);
if (newWidth != fb->Width || newHeight != fb->Height) {
xmesa_resize_buffers(ctx, fb, newWidth, newHeight);
}
if (ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
/* Update readbuffer's size */
struct gl_framebuffer *fb = ctx->WinSysReadBuffer;
GLuint newWidth, newHeight;
get_buffer_size(fb, &newWidth, &newHeight);
if (newWidth != fb->Width || newHeight != fb->Height) {
xmesa_resize_buffers(ctx, fb, newWidth, newHeight);
ctx->NewState |= _NEW_BUFFERS;
}
}
}
/**
* Called by glViewport.
* This is a good time for us to poll the current X window size and adjust
* our renderbuffers to match the current window size.
* Remember, we have no opportunity to respond to conventional
* X Resize/StructureNotify events since the X driver has no event loop.
* Thus, we poll.
* Note that this trick isn't fool-proof. If the application never calls
* glViewport, our notion of the current window size may be incorrect.
*/
static void
xmesa_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
update_framebuffer_size(ctx);
}
#if ENABLE_EXT_timer_query
/*
* The GL_EXT_timer_query extension is not enabled for the XServer
* indirect renderer. Not sure about how/if wrapping of gettimeofday()
* is done, etc.
*/
struct xmesa_query_object
{
struct gl_query_object Base;
struct timeval StartTime;
};
static struct gl_query_object *
xmesa_new_query_object(GLcontext *ctx, GLuint id)
{
struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object);
if (q) {
q->Base.Id = id;
q->Base.Ready = GL_TRUE;
}
return &q->Base;
}
static void
xmesa_begin_query(GLcontext *ctx, GLenum target, struct gl_query_object *q)
{
if (target == GL_TIME_ELAPSED_EXT) {
struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
(void) gettimeofday(&xq->StartTime, NULL);
}
}
/**
* Return the difference between the two given times in microseconds.
*/
#ifdef __VMS
#define suseconds_t unsigned int
#endif
static GLuint64EXT
time_diff(const struct timeval *t0, const struct timeval *t1)
{
GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */
GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */
GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000;
GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000;
return nanosec1 - nanosec0;
}
static void
xmesa_end_query(GLcontext *ctx, GLenum target, struct gl_query_object *q)
{
if (target == GL_TIME_ELAPSED_EXT) {
struct xmesa_query_object *xq = (struct xmesa_query_object *) q;
struct timeval endTime;
(void) gettimeofday(&endTime, NULL);
/* result is in nanoseconds! */
q->Result = time_diff(&xq->StartTime, &endTime);
}
q->Ready = GL_TRUE;
}
#endif /* ENABLE_timer_query */
/**
* Initialize the device driver function table with the functions
* we implement in this driver.
*/
void
xmesa_init_driver_functions( XMesaVisual xmvisual,
struct dd_function_table *driver )
{
driver->GetString = get_string;
driver->UpdateState = xmesa_update_state;
driver->GetBufferSize = get_buffer_size;
driver->Flush = finish_or_flush;
driver->Finish = finish_or_flush;
driver->ClearIndex = clear_index;
driver->ClearColor = clear_color;
driver->IndexMask = index_mask;
driver->ColorMask = color_mask;
driver->Enable = enable;
driver->Clear = clear_buffers;
driver->ResizeBuffers = xmesa_resize_buffers;
driver->Viewport = xmesa_viewport;
#ifndef XFree86Server
driver->CopyPixels = xmesa_CopyPixels;
if (xmvisual->undithered_pf == PF_8R8G8B &&
xmvisual->dithered_pf == PF_8R8G8B) {
driver->DrawPixels = xmesa_DrawPixels_8R8G8B;
}
else if (xmvisual->undithered_pf == PF_5R6G5B) {
driver->DrawPixels = xmesa_DrawPixels_5R6G5B;
}
#endif
driver->TestProxyTexImage = test_proxy_teximage;
#if ENABLE_EXT_texure_compression_s3tc
driver->ChooseTextureFormat = choose_tex_format;
#else
(void) choose_tex_format;
#endif
#if ENABLE_EXT_timer_query
driver->NewQueryObject = xmesa_new_query_object;
driver->BeginQuery = xmesa_begin_query;
driver->EndQuery = xmesa_end_query;
#endif
}
#define XMESA_NEW_POINT (_NEW_POINT | \
_NEW_RENDERMODE | \
_SWRAST_NEW_RASTERMASK)
#define XMESA_NEW_LINE (_NEW_LINE | \
_NEW_TEXTURE | \
_NEW_LIGHT | \
_NEW_DEPTH | \
_NEW_RENDERMODE | \
_SWRAST_NEW_RASTERMASK)
#define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \
_NEW_TEXTURE | \
_NEW_LIGHT | \
_NEW_DEPTH | \
_NEW_RENDERMODE | \
_SWRAST_NEW_RASTERMASK)
/* Extend the software rasterizer with our line/point/triangle
* functions.
*/
void xmesa_register_swrast_functions( GLcontext *ctx )
{
SWcontext *swrast = SWRAST_CONTEXT( ctx );
swrast->choose_point = xmesa_choose_point;
swrast->choose_line = xmesa_choose_line;
swrast->choose_triangle = xmesa_choose_triangle;
swrast->invalidate_point |= XMESA_NEW_POINT;
swrast->invalidate_line |= XMESA_NEW_LINE;
swrast->invalidate_triangle |= XMESA_NEW_TRIANGLE;
}
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