/**************************************************************************
*
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2006 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* the following conditions:
*
* The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
+ * next paragraph) shall be included in all copies or substantial portionsalloc
* 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "glheader.h"
-#include "enums.h"
-#include "mtypes.h"
-#include "macros.h"
+#include "main/accum.h"
+#include "main/enums.h"
+#include "main/state.h"
+#include "main/bufferobj.h"
+#include "main/context.h"
#include "swrast/swrast.h"
-#include "intel_screen.h"
#include "intel_context.h"
-#include "intel_ioctl.h"
-#include "intel_batchbuffer.h"
+#include "intel_pixel.h"
+#include "intel_regions.h"
+#define FILE_DEBUG_FLAG DEBUG_PIXEL
-
-static GLboolean
-check_color( const GLcontext *ctx, GLenum type, GLenum format,
- const struct gl_pixelstore_attrib *packing,
- const void *pixels, GLint sz, GLint pitch )
+static GLenum
+effective_func(GLenum func, bool src_alpha_is_one)
{
- intelContextPtr intel = INTEL_CONTEXT(ctx);
- GLuint cpp = intel->intelScreen->cpp;
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- if ( (pitch & 63) ||
- ctx->_ImageTransferState ||
- packing->SwapBytes ||
- packing->LsbFirst) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: failed 1\n", __FUNCTION__);
- return GL_FALSE;
+ if (src_alpha_is_one) {
+ if (func == GL_SRC_ALPHA)
+ return GL_ONE;
+ if (func == GL_ONE_MINUS_SRC_ALPHA)
+ return GL_ZERO;
}
- if ( type == GL_UNSIGNED_INT_8_8_8_8_REV &&
- cpp == 4 &&
- format == GL_BGRA ) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: passed 2\n", __FUNCTION__);
- return GL_TRUE;
- }
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: failed\n", __FUNCTION__);
-
- return GL_FALSE;
+ return func;
}
-static GLboolean
-check_color_per_fragment_ops( const GLcontext *ctx )
-{
- int result;
- result = (!( ctx->Color.AlphaEnabled ||
- ctx->Depth.Test ||
- ctx->Fog.Enabled ||
- ctx->Scissor.Enabled ||
- ctx->Stencil.Enabled ||
- !ctx->Color.ColorMask[0] ||
- !ctx->Color.ColorMask[1] ||
- !ctx->Color.ColorMask[2] ||
- !ctx->Color.ColorMask[3] ||
- ctx->Color.ColorLogicOpEnabled ||
- ctx->Texture._EnabledUnits
- ) &&
- ctx->Current.RasterPosValid);
-
- return result;
-}
-
-
/**
- * Clip the given rectangle against the buffer's bounds (including scissor).
- * \param size returns the
- * \return GL_TRUE if any pixels remain, GL_FALSE if totally clipped.
- *
- * XXX Replace this with _mesa_clip_drawpixels() and _mesa_clip_readpixels()
- * from Mesa 6.4. We shouldn't apply scissor for ReadPixels.
+ * Check if any fragment operations are in effect which might effect
+ * glDraw/CopyPixels.
*/
-static GLboolean
-clip_pixelrect( const GLcontext *ctx,
- const GLframebuffer *buffer,
- GLint *x, GLint *y,
- GLsizei *width, GLsizei *height)
+bool
+intel_check_blit_fragment_ops(struct gl_context * ctx, bool src_alpha_is_one)
{
- /* left clipping */
- if (*x < buffer->_Xmin) {
- *width -= (buffer->_Xmin - *x);
- *x = buffer->_Xmin;
- }
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
- /* right clipping */
- if (*x + *width > buffer->_Xmax)
- *width -= (*x + *width - buffer->_Xmax - 1);
-
- if (*width <= 0)
- return GL_FALSE;
-
- /* bottom clipping */
- if (*y < buffer->_Ymin) {
- *height -= (buffer->_Ymin - *y);
- *y = buffer->_Ymin;
+ if (ctx->FragmentProgram._Enabled) {
+ DBG("fallback due to fragment program\n");
+ return false;
}
- /* top clipping */
- if (*y + *height > buffer->_Ymax)
- *height -= (*y + *height - buffer->_Ymax - 1);
-
- if (*height <= 0)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-/**
- * Compute intersection of a clipping rectangle and pixel rectangle,
- * returning results in x/y/w/hOut vars.
- * \return GL_TRUE if there's intersection, GL_FALSE if disjoint.
- */
-static INLINE GLboolean
-intersect_region(const drm_clip_rect_t *box,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLint *xOut, GLint *yOut, GLint *wOut, GLint *hOut)
-{
- GLint bx = box->x1;
- GLint by = box->y1;
- GLint bw = box->x2 - bx;
- GLint bh = box->y2 - by;
-
- if (bx < x) bw -= x - bx, bx = x;
- if (by < y) bh -= y - by, by = y;
- if (bx + bw > x + width) bw = x + width - bx;
- if (by + bh > y + height) bh = y + height - by;
-
- *xOut = bx;
- *yOut = by;
- *wOut = bw;
- *hOut = bh;
-
- if (bw <= 0) return GL_FALSE;
- if (bh <= 0) return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-
-static GLboolean
-intelTryReadPixels( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *pack,
- GLvoid *pixels )
-{
- intelContextPtr intel = INTEL_CONTEXT(ctx);
- GLint size = 0; /* not really used */
- GLint pitch = pack->RowLength ? pack->RowLength : width;
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- /* Only accelerate reading to agp buffers.
- */
- if ( !intelIsAgpMemory(intel, pixels,
- pitch * height * intel->intelScreen->cpp ) ) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: dest not agp\n", __FUNCTION__);
- return GL_FALSE;
+ if (ctx->Color.BlendEnabled &&
+ (effective_func(ctx->Color.Blend[0].SrcRGB, src_alpha_is_one) != GL_ONE ||
+ effective_func(ctx->Color.Blend[0].DstRGB, src_alpha_is_one) != GL_ZERO ||
+ ctx->Color.Blend[0].EquationRGB != GL_FUNC_ADD ||
+ effective_func(ctx->Color.Blend[0].SrcA, src_alpha_is_one) != GL_ONE ||
+ effective_func(ctx->Color.Blend[0].DstA, src_alpha_is_one) != GL_ZERO ||
+ ctx->Color.Blend[0].EquationA != GL_FUNC_ADD)) {
+ DBG("fallback due to blend\n");
+ return false;
}
- /* Need GL_PACK_INVERT_MESA to cope with upsidedown results from
- * blitter:
- */
- if (!pack->Invert) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: MESA_PACK_INVERT not set\n", __FUNCTION__);
- return GL_FALSE;
+ if (ctx->Texture._MaxEnabledTexImageUnit != -1) {
+ DBG("fallback due to texturing\n");
+ return false;
}
- if (!check_color(ctx, type, format, pack, pixels, size, pitch))
- return GL_FALSE;
-
- switch ( intel->intelScreen->cpp ) {
- case 4:
- break;
- default:
- return GL_FALSE;
+ if (!(ctx->Color.ColorMask[0][0] &&
+ ctx->Color.ColorMask[0][1] &&
+ ctx->Color.ColorMask[0][2] &&
+ ctx->Color.ColorMask[0][3])) {
+ DBG("fallback due to color masking\n");
+ return false;
}
-
- /* Although the blits go on the command buffer, need to do this and
- * fire with lock held to guarentee cliprects and drawing offset are
- * correct.
- *
- * This is an unusual situation however, as the code which flushes
- * a full command buffer expects to be called unlocked. As a
- * workaround, immediately flush the buffer on aquiring the lock.
- */
- intelFlush( &intel->ctx );
- LOCK_HARDWARE( intel );
- {
- __DRIdrawablePrivate *dPriv = intel->driDrawable;
- int nbox = dPriv->numClipRects;
- int src_offset = intel->readRegion->offset;
- int src_pitch = intel->intelScreen->front.pitch;
- int dst_offset = intelAgpOffsetFromVirtual( intel, pixels);
- drm_clip_rect_t *box = dPriv->pClipRects;
- int i;
-
- assert(dst_offset != ~0); /* should have been caught above */
-
- if (!clip_pixelrect(ctx, ctx->ReadBuffer, &x, &y, &width, &height)) {
- UNLOCK_HARDWARE( intel );
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s totally clipped -- nothing to do\n",
- __FUNCTION__);
- return GL_TRUE;
- }
-
- /* convert to screen coords (y=0=top) */
- y = dPriv->h - y - height;
- x += dPriv->x;
- y += dPriv->y;
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "readpixel blit src_pitch %d dst_pitch %d\n",
- src_pitch, pitch);
-
- /* We don't really have to do window clipping for readpixels.
- * The OpenGL spec says that pixels read from outside the
- * visible window region (pixel ownership) have undefined value.
- */
- for (i = 0 ; i < nbox ; i++)
- {
- GLint bx, by, bw, bh;
- if (intersect_region(box+i, x, y, width, height,
- &bx, &by, &bw, &bh)) {
- intelEmitCopyBlitLocked( intel,
- intel->intelScreen->cpp,
- src_pitch, src_offset,
- pitch, dst_offset,
- bx, by,
- bx - x, by - y,
- bw, bh );
- }
- }
+ if (ctx->Color.AlphaEnabled) {
+ DBG("fallback due to alpha\n");
+ return false;
}
- UNLOCK_HARDWARE( intel );
- intelFinish( &intel->ctx );
- return GL_TRUE;
-}
-
-static void
-intelReadPixels( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *pack,
- GLvoid *pixels )
-{
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- if (!intelTryReadPixels( ctx, x, y, width, height, format, type, pack,
- pixels))
- _swrast_ReadPixels( ctx, x, y, width, height, format, type, pack,
- pixels);
-}
-
-
-
-
-static void do_draw_pix( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLint pitch,
- const void *pixels,
- GLuint dest )
-{
- intelContextPtr intel = INTEL_CONTEXT(ctx);
- __DRIdrawablePrivate *dPriv = intel->driDrawable;
- drm_clip_rect_t *box = dPriv->pClipRects;
- int nbox = dPriv->numClipRects;
- int i;
- int src_offset = intelAgpOffsetFromVirtual( intel, pixels);
- int src_pitch = pitch;
-
- assert(src_offset != ~0); /* should be caught earlier */
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- intelFlush( &intel->ctx );
- LOCK_HARDWARE( intel );
- if (ctx->DrawBuffer)
- {
- y -= height; /* cope with pixel zoom */
-
- if (!clip_pixelrect(ctx, ctx->DrawBuffer,
- &x, &y, &width, &height)) {
- UNLOCK_HARDWARE( intel );
- return;
- }
-
- y = dPriv->h - y - height; /* convert from gl to hardware coords */
- x += dPriv->x;
- y += dPriv->y;
-
- for (i = 0 ; i < nbox ; i++ )
- {
- GLint bx, by, bw, bh;
- if (intersect_region(box + i, x, y, width, height,
- &bx, &by, &bw, &bh)) {
- intelEmitCopyBlitLocked( intel,
- intel->intelScreen->cpp,
- src_pitch, src_offset,
- intel->intelScreen->front.pitch,
- intel->drawRegion->offset,
- bx - x, by - y,
- bx, by,
- bw, bh );
- }
- }
+ if (ctx->Depth.Test) {
+ DBG("fallback due to depth test\n");
+ return false;
}
- UNLOCK_HARDWARE( intel );
- intelFinish( &intel->ctx );
-}
-
-
-static GLboolean
-intelTryDrawPixels( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *unpack,
- const GLvoid *pixels )
-{
- intelContextPtr intel = INTEL_CONTEXT(ctx);
- GLint pitch = unpack->RowLength ? unpack->RowLength : width;
- GLuint dest;
- GLuint cpp = intel->intelScreen->cpp;
- GLint size = width * pitch * cpp;
-
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- switch (format) {
- case GL_RGB:
- case GL_RGBA:
- case GL_BGRA:
- dest = intel->drawRegion->offset;
-
- /* Planemask doesn't have full support in blits.
- */
- if (!ctx->Color.ColorMask[RCOMP] ||
- !ctx->Color.ColorMask[GCOMP] ||
- !ctx->Color.ColorMask[BCOMP] ||
- !ctx->Color.ColorMask[ACOMP]) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: planemask\n", __FUNCTION__);
- return GL_FALSE;
- }
-
- /* Can't do conversions on agp reads/draws.
- */
- if ( !intelIsAgpMemory( intel, pixels, size ) ) {
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s: not agp memory\n", __FUNCTION__);
- return GL_FALSE;
- }
-
- if (!check_color(ctx, type, format, unpack, pixels, size, pitch)) {
- return GL_FALSE;
- }
- if (!check_color_per_fragment_ops(ctx)) {
- return GL_FALSE;
- }
-
- if (ctx->Pixel.ZoomX != 1.0F ||
- ctx->Pixel.ZoomY != -1.0F)
- return GL_FALSE;
- break;
-
- default:
- return GL_FALSE;
+ if (ctx->Fog.Enabled) {
+ DBG("fallback due to fog\n");
+ return false;
}
- if ( intelIsAgpMemory(intel, pixels, size) )
- {
- do_draw_pix( ctx, x, y, width, height, pitch, pixels, dest );
- return GL_TRUE;
- }
- else if (0)
- {
- /* Pixels is in regular memory -- get dma buffers and perform
- * upload through them. No point doing this for regular uploads
- * but once we remove some of the restrictions above (colormask,
- * pixelformat conversion, zoom?, etc), this could be a win.
- */
+ if (ctx->_ImageTransferState) {
+ DBG("fallback due to image transfer\n");
+ return false;
}
- else
- return GL_FALSE;
- return GL_FALSE;
-}
-
-static void
-intelDrawPixels( GLcontext *ctx,
- GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
- const struct gl_pixelstore_attrib *unpack,
- const GLvoid *pixels )
-{
- if (INTEL_DEBUG & DEBUG_PIXEL)
- fprintf(stderr, "%s\n", __FUNCTION__);
-
- if (intelTryDrawPixels( ctx, x, y, width, height, format, type,
- unpack, pixels ))
- return;
-
- if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) {
- /*
- * We don't want the i915 texenv program to be applied to DrawPixels.
- * This is really just a performance optimization (mesa will other-
- * wise happily run the fragment program on each pixel in the image).
- */
- struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current;
- ctx->FragmentProgram._Current = NULL;
- _swrast_DrawPixels( ctx, x, y, width, height, format, type,
- unpack, pixels );
- ctx->FragmentProgram._Current = fpSave;
- }
- else {
- _swrast_DrawPixels( ctx, x, y, width, height, format, type,
- unpack, pixels );
+ if (ctx->Stencil._Enabled) {
+ DBG("fallback due to image stencil\n");
+ return false;
}
-}
-
-
-
-/**
- * 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
-intelCopyPixels( GLcontext *ctx,
- GLint srcx, GLint srcy, GLsizei width, GLsizei height,
- GLint destx, GLint desty, GLenum type )
-{
-#if 0
- const XMesaContext xmesa = XMESA_CONTEXT(ctx);
- const SWcontext *swrast = SWRAST_CONTEXT( ctx );
- XMesaDisplay *dpy = xmesa->xm_visual->display;
- const XMesaDrawable drawBuffer = xmesa->xm_draw_buffer->buffer;
- const XMesaDrawable readBuffer = xmesa->xm_read_buffer->buffer;
- const XMesaGC gc = xmesa->xm_draw_buffer->gc;
-
- ASSERT(dpy);
- ASSERT(gc);
-
- if (drawBuffer && /* buffer != 0 means it's a Window or Pixmap */
- readBuffer &&
- 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 = FLIP(xmesa->xm_read_buffer, srcy) - height + 1;
- desty = FLIP(xmesa->xm_draw_buffer, desty) - height + 1;
- XCopyArea(dpy, readBuffer, drawBuffer, gc,
- srcx, srcy, width, height, destx, desty);
+ if (ctx->RenderMode != GL_RENDER) {
+ DBG("fallback due to render mode\n");
+ return false;
}
-#else
- _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type );
-#endif
-}
-
-
+ return true;
+}
-void intelInitPixelFuncs( struct dd_function_table *functions )
+void
+intelInitPixelFuncs(struct dd_function_table *functions)
{
+ functions->Bitmap = intelBitmap;
functions->CopyPixels = intelCopyPixels;
- if (!getenv("INTEL_NO_BLITS")) {
- functions->ReadPixels = intelReadPixels;
- functions->DrawPixels = intelDrawPixels;
- }
+ functions->DrawPixels = intelDrawPixels;
+ functions->ReadPixels = intelReadPixels;
}
+
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