/**************************************************************************
*
* Copyright 2003 VMware, Inc.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* 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 "main/glheader.h"
#include "main/context.h"
#include "main/extensions.h"
#include "main/fbobject.h"
#include "main/framebuffer.h"
#include "main/imports.h"
#include "main/points.h"
#include "main/renderbuffer.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"
#include "drivers/common/driverfuncs.h"
#include "drivers/common/meta.h"
#include "intel_chipset.h"
#include "intel_buffers.h"
#include "intel_tex.h"
#include "intel_batchbuffer.h"
#include "intel_clear.h"
#include "intel_extensions.h"
#include "intel_pixel.h"
#include "intel_regions.h"
#include "intel_buffer_objects.h"
#include "intel_fbo.h"
#include "intel_bufmgr.h"
#include "intel_screen.h"
#include "intel_mipmap_tree.h"
#include "utils.h"
#include "util/debug.h"
#include "util/ralloc.h"
int INTEL_DEBUG = (0);
const char *const i915_vendor_string = "Intel Open Source Technology Center";
const char *
i915_get_renderer_string(unsigned deviceID)
{
const char *chipset;
static char buffer[128];
switch (deviceID) {
#undef CHIPSET
#define CHIPSET(id, symbol, str) case id: chipset = str; break;
#include "pci_ids/i915_pci_ids.h"
default:
chipset = "Unknown Intel Chipset";
break;
}
(void) driGetRendererString(buffer, chipset, 0);
return buffer;
}
static const GLubyte *
intelGetString(struct gl_context * ctx, GLenum name)
{
const struct intel_context *const intel = intel_context(ctx);
switch (name) {
case GL_VENDOR:
return (GLubyte *) i915_vendor_string;
case GL_RENDERER:
return
(GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID);
default:
return NULL;
}
}
#define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
static void
intel_flush_front(struct gl_context *ctx)
{
struct intel_context *intel = intel_context(ctx);
__DRIcontext *driContext = intel->driContext;
__DRIdrawable *driDrawable = driContext->driDrawablePriv;
__DRIscreen *const screen = intel->intelScreen->driScrnPriv;
if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
if (flushFront(screen) &&
driDrawable &&
driDrawable->loaderPrivate) {
flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
/* We set the dirty bit in intel_prepare_render() if we're
* front buffer rendering once we get there.
*/
intel->front_buffer_dirty = false;
}
}
}
static void
intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable);
static unsigned
intel_bits_per_pixel(const struct intel_renderbuffer *rb)
{
return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
}
static void
intel_query_dri2_buffers(struct intel_context *intel,
__DRIdrawable *drawable,
__DRIbuffer **buffers,
int *count);
static void
intel_process_dri2_buffer(struct intel_context *intel,
__DRIdrawable *drawable,
__DRIbuffer *buffer,
struct intel_renderbuffer *rb,
const char *buffer_name);
static void
intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable)
{
__DRIbuffer *buffers = NULL;
int i, count;
const char *region_name;
struct intel_renderbuffer *rb;
struct gl_framebuffer *fb = drawable->driverPrivate;
intel_query_dri2_buffers(intel, drawable, &buffers, &count);
if (buffers == NULL)
return;
for (i = 0; i < count; i++) {
switch (buffers[i].attachment) {
case __DRI_BUFFER_FRONT_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
region_name = "dri2 front buffer";
break;
case __DRI_BUFFER_FAKE_FRONT_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
region_name = "dri2 fake front buffer";
break;
case __DRI_BUFFER_BACK_LEFT:
rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
region_name = "dri2 back buffer";
break;
case __DRI_BUFFER_DEPTH:
case __DRI_BUFFER_HIZ:
case __DRI_BUFFER_DEPTH_STENCIL:
case __DRI_BUFFER_STENCIL:
case __DRI_BUFFER_ACCUM:
default:
fprintf(stderr,
"unhandled buffer attach event, attachment type %d\n",
buffers[i].attachment);
return;
}
intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name);
}
}
void
intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
{
struct intel_context *intel = context->driverPrivate;
__DRIscreen *screen = intel->intelScreen->driScrnPriv;
/* Set this up front, so that in case our buffers get invalidated
* while we're getting new buffers, we don't clobber the stamp and
* thus ignore the invalidate. */
drawable->lastStamp = drawable->dri2.stamp;
if (unlikely(INTEL_DEBUG & DEBUG_DRI))
fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
if (screen->image.loader)
intel_update_image_buffers(intel, drawable);
else
intel_update_dri2_buffers(intel, drawable);
driUpdateFramebufferSize(&intel->ctx, drawable);
}
/**
* intel_prepare_render should be called anywhere that curent read/drawbuffer
* state is required.
*/
void
intel_prepare_render(struct intel_context *intel)
{
__DRIcontext *driContext = intel->driContext;
__DRIdrawable *drawable;
drawable = driContext->driDrawablePriv;
if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
if (drawable->lastStamp != drawable->dri2.stamp)
intel_update_renderbuffers(driContext, drawable);
intel_draw_buffer(&intel->ctx);
driContext->dri2.draw_stamp = drawable->dri2.stamp;
}
drawable = driContext->driReadablePriv;
if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
if (drawable->lastStamp != drawable->dri2.stamp)
intel_update_renderbuffers(driContext, drawable);
driContext->dri2.read_stamp = drawable->dri2.stamp;
}
/* If we're currently rendering to the front buffer, the rendering
* that will happen next will probably dirty the front buffer. So
* mark it as dirty here.
*/
if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer))
intel->front_buffer_dirty = true;
/* Wait for the swapbuffers before the one we just emitted, so we
* don't get too many swaps outstanding for apps that are GPU-heavy
* but not CPU-heavy.
*
* We're using intelDRI2Flush (called from the loader before
* swapbuffer) and glFlush (for front buffer rendering) as the
* indicator that a frame is done and then throttle when we get
* here as we prepare to render the next frame. At this point for
* round trips for swap/copy and getting new buffers are done and
* we'll spend less time waiting on the GPU.
*
* Unfortunately, we don't have a handle to the batch containing
* the swap, and getting our hands on that doesn't seem worth it,
* so we just us the first batch we emitted after the last swap.
*/
if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
if (!intel->disable_throttling)
drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
intel->first_post_swapbuffers_batch = NULL;
intel->need_throttle = false;
}
}
static void
intel_noninvalidate_viewport(struct gl_context *ctx)
{
struct intel_context *intel = intel_context(ctx);
__DRIcontext *driContext = intel->driContext;
intelCalcViewport(ctx);
if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
dri2InvalidateDrawable(driContext->driDrawablePriv);
dri2InvalidateDrawable(driContext->driReadablePriv);
}
}
static void
intel_viewport(struct gl_context *ctx)
{
intelCalcViewport(ctx);
}
static const struct debug_control debug_control[] = {
{ "tex", DEBUG_TEXTURE},
{ "state", DEBUG_STATE},
{ "blit", DEBUG_BLIT},
{ "mip", DEBUG_MIPTREE},
{ "fall", DEBUG_PERF},
{ "perf", DEBUG_PERF},
{ "bat", DEBUG_BATCH},
{ "pix", DEBUG_PIXEL},
{ "buf", DEBUG_BUFMGR},
{ "reg", DEBUG_REGION},
{ "fbo", DEBUG_FBO},
{ "fs", DEBUG_WM },
{ "sync", DEBUG_SYNC},
{ "dri", DEBUG_DRI },
{ "stats", DEBUG_STATS },
{ "wm", DEBUG_WM },
{ "aub", DEBUG_AUB },
{ NULL, 0 }
};
static void
intelInvalidateState(struct gl_context * ctx, GLuint new_state)
{
struct intel_context *intel = intel_context(ctx);
if (ctx->swrast_context)
_swrast_InvalidateState(ctx, new_state);
_vbo_InvalidateState(ctx, new_state);
intel->NewGLState |= new_state;
if (intel->vtbl.invalidate_state)
intel->vtbl.invalidate_state( intel, new_state );
}
void
intel_flush_rendering_to_batch(struct gl_context *ctx)
{
struct intel_context *intel = intel_context(ctx);
if (intel->Fallback)
_swrast_flush(ctx);
INTEL_FIREVERTICES(intel);
}
void
_intel_flush(struct gl_context *ctx, const char *file, int line)
{
struct intel_context *intel = intel_context(ctx);
intel_flush_rendering_to_batch(ctx);
if (intel->batch.used)
_intel_batchbuffer_flush(intel, file, line);
}
static void
intel_glFlush(struct gl_context *ctx)
{
struct intel_context *intel = intel_context(ctx);
intel_flush(ctx);
intel_flush_front(ctx);
if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer))
intel->need_throttle = true;
}
void
intelFinish(struct gl_context * ctx)
{
struct intel_context *intel = intel_context(ctx);
intel_flush(ctx);
intel_flush_front(ctx);
if (intel->batch.last_bo)
drm_intel_bo_wait_rendering(intel->batch.last_bo);
}
void
intelInitDriverFunctions(struct dd_function_table *functions)
{
_mesa_init_driver_functions(functions);
functions->Flush = intel_glFlush;
functions->Finish = intelFinish;
functions->GetString = intelGetString;
functions->UpdateState = intelInvalidateState;
intelInitTextureFuncs(functions);
intelInitTextureImageFuncs(functions);
intelInitTextureSubImageFuncs(functions);
intelInitTextureCopyImageFuncs(functions);
intelInitClearFuncs(functions);
intelInitBufferFuncs(functions);
intelInitPixelFuncs(functions);
intelInitBufferObjectFuncs(functions);
intel_init_syncobj_functions(functions);
}
bool
intelInitContext(struct intel_context *intel,
int api,
unsigned major_version,
unsigned minor_version,
uint32_t flags,
const struct gl_config * mesaVis,
__DRIcontext * driContextPriv,
void *sharedContextPrivate,
struct dd_function_table *functions,
unsigned *dri_ctx_error)
{
struct gl_context *ctx = &intel->ctx;
struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
__DRIscreen *sPriv = driContextPriv->driScreenPriv;
struct intel_screen *intelScreen = sPriv->driverPrivate;
int bo_reuse_mode;
/* Can't rely on invalidate events, fall back to glViewport hack */
if (!driContextPriv->driScreenPriv->dri2.useInvalidate)
functions->Viewport = intel_noninvalidate_viewport;
else
functions->Viewport = intel_viewport;
intel->intelScreen = intelScreen;
if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
functions)) {
*dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY;
printf("%s: failed to init mesa context\n", __func__);
return false;
}
driContextSetFlags(&intel->ctx, flags);
driContextPriv->driverPrivate = intel;
intel->driContext = driContextPriv;
intel->gen = intelScreen->gen;
const int devID = intelScreen->deviceID;
intel->is_945 = IS_945(devID);
intel->has_swizzling = intel->intelScreen->hw_has_swizzling;
memset(&ctx->TextureFormatSupported,
0, sizeof(ctx->TextureFormatSupported));
driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
sPriv->myNum, "i915");
intel->maxBatchSize = 4096;
/* Estimate the size of the mappable aperture into the GTT. There's an
* ioctl to get the whole GTT size, but not one to get the mappable subset.
* It turns out it's basically always 256MB, though some ancient hardware
* was smaller.
*/
uint32_t gtt_size = 256 * 1024 * 1024;
if (intel->gen == 2)
gtt_size = 128 * 1024 * 1024;
/* We don't want to map two objects such that a memcpy between them would
* just fault one mapping in and then the other over and over forever. So
* we would need to divide the GTT size by 2. Additionally, some GTT is
* taken up by things like the framebuffer and the ringbuffer and such, so
* be more conservative.
*/
intel->max_gtt_map_object_size = gtt_size / 4;
intel->bufmgr = intelScreen->bufmgr;
bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
switch (bo_reuse_mode) {
case DRI_CONF_BO_REUSE_DISABLED:
break;
case DRI_CONF_BO_REUSE_ALL:
intel_bufmgr_gem_enable_reuse(intel->bufmgr);
break;
}
ctx->Const.MinLineWidth = 1.0;
ctx->Const.MinLineWidthAA = 1.0;
ctx->Const.MaxLineWidth = 7.0;
ctx->Const.MaxLineWidthAA = 7.0;
ctx->Const.LineWidthGranularity = 0.5;
ctx->Const.MinPointSize = 1.0;
ctx->Const.MinPointSizeAA = 1.0;
ctx->Const.MaxPointSize = 255.0;
ctx->Const.MaxPointSizeAA = 3.0;
ctx->Const.PointSizeGranularity = 1.0;
ctx->Const.StripTextureBorder = GL_TRUE;
/* reinitialize the context point state.
* It depend on constants in __struct gl_contextRec::Const
*/
_mesa_init_point(ctx);
ctx->Const.MaxRenderbufferSize = 2048;
_swrast_CreateContext(ctx);
_vbo_CreateContext(ctx);
if (ctx->swrast_context) {
_tnl_CreateContext(ctx);
_swsetup_CreateContext(ctx);
/* Configure swrast to match hardware characteristics: */
_swrast_allow_pixel_fog(ctx, false);
_swrast_allow_vertex_fog(ctx, true);
}
_mesa_meta_init(ctx);
intel->hw_stipple = 1;
intel->RenderIndex = ~0;
intelInitExtensions(ctx);
INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control);
if (INTEL_DEBUG & DEBUG_BUFMGR)
dri_bufmgr_set_debug(intel->bufmgr, true);
if (INTEL_DEBUG & DEBUG_PERF)
intel->perf_debug = true;
if (INTEL_DEBUG & DEBUG_AUB)
drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true);
intel_batchbuffer_init(intel);
intel_fbo_init(intel);
intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
intel->prim.primitive = ~0;
/* Force all software fallbacks */
if (driQueryOptionb(&intel->optionCache, "no_rast")) {
fprintf(stderr, "disabling 3D rasterization\n");
intel->no_rast = 1;
}
if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
intel->always_flush_batch = 1;
}
if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
fprintf(stderr, "flushing GPU caches before/after each draw call\n");
intel->always_flush_cache = 1;
}
if (driQueryOptionb(&intel->optionCache, "disable_throttling")) {
fprintf(stderr, "disabling flush throttling\n");
intel->disable_throttling = 1;
}
return true;
}
void
intelDestroyContext(__DRIcontext * driContextPriv)
{
struct intel_context *intel =
(struct intel_context *) driContextPriv->driverPrivate;
struct gl_context *ctx = &intel->ctx;
assert(intel); /* should never be null */
if (intel) {
INTEL_FIREVERTICES(intel);
/* Dump a final BMP in case the application doesn't call SwapBuffers */
if (INTEL_DEBUG & DEBUG_AUB) {
intel_batchbuffer_flush(intel);
aub_dump_bmp(&intel->ctx);
}
_mesa_meta_free(&intel->ctx);
intel->vtbl.destroy(intel);
if (ctx->swrast_context) {
_swsetup_DestroyContext(&intel->ctx);
_tnl_DestroyContext(&intel->ctx);
}
_vbo_DestroyContext(&intel->ctx);
if (ctx->swrast_context)
_swrast_DestroyContext(&intel->ctx);
intel->Fallback = 0x0; /* don't call _swrast_Flush later */
intel_batchbuffer_free(intel);
free(intel->prim.vb);
intel->prim.vb = NULL;
drm_intel_bo_unreference(intel->prim.vb_bo);
intel->prim.vb_bo = NULL;
drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
intel->first_post_swapbuffers_batch = NULL;
driDestroyOptionCache(&intel->optionCache);
/* free the Mesa context */
_mesa_free_context_data(&intel->ctx);
_math_matrix_dtr(&intel->ViewportMatrix);
ralloc_free(intel);
driContextPriv->driverPrivate = NULL;
}
}
GLboolean
intelUnbindContext(__DRIcontext * driContextPriv)
{
/* Unset current context and dispath table */
_mesa_make_current(NULL, NULL, NULL);
return true;
}
GLboolean
intelMakeCurrent(__DRIcontext * driContextPriv,
__DRIdrawable * driDrawPriv,
__DRIdrawable * driReadPriv)
{
struct intel_context *intel;
GET_CURRENT_CONTEXT(curCtx);
if (driContextPriv)
intel = (struct intel_context *) driContextPriv->driverPrivate;
else
intel = NULL;
/* According to the glXMakeCurrent() man page: "Pending commands to
* the previous context, if any, are flushed before it is released."
* But only flush if we're actually changing contexts.
*/
if (intel_context(curCtx) && intel_context(curCtx) != intel) {
_mesa_flush(curCtx);
}
if (driContextPriv) {
struct gl_context *ctx = &intel->ctx;
struct gl_framebuffer *fb, *readFb;
if (driDrawPriv == NULL && driReadPriv == NULL) {
fb = _mesa_get_incomplete_framebuffer();
readFb = _mesa_get_incomplete_framebuffer();
} else {
fb = driDrawPriv->driverPrivate;
readFb = driReadPriv->driverPrivate;
driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
}
intel_prepare_render(intel);
_mesa_make_current(ctx, fb, readFb);
/* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
* is NULL at that point. We can't call _mesa_makecurrent()
* first, since we need the buffer size for the initial
* viewport. So just call intel_draw_buffer() again here. */
intel_draw_buffer(ctx);
}
else {
_mesa_make_current(NULL, NULL, NULL);
}
return true;
}
/**
* \brief Query DRI2 to obtain a DRIdrawable's buffers.
*
* To determine which DRI buffers to request, examine the renderbuffers
* attached to the drawable's framebuffer. Then request the buffers with
* DRI2GetBuffers() or DRI2GetBuffersWithFormat().
*
* This is called from intel_update_renderbuffers().
*
* \param drawable Drawable whose buffers are queried.
* \param buffers [out] List of buffers returned by DRI2 query.
* \param buffer_count [out] Number of buffers returned.
*
* \see intel_update_renderbuffers()
* \see DRI2GetBuffers()
* \see DRI2GetBuffersWithFormat()
*/
static void
intel_query_dri2_buffers(struct intel_context *intel,
__DRIdrawable *drawable,
__DRIbuffer **buffers,
int *buffer_count)
{
__DRIscreen *screen = intel->intelScreen->driScrnPriv;
struct gl_framebuffer *fb = drawable->driverPrivate;
int i = 0;
unsigned attachments[8];
struct intel_renderbuffer *front_rb;
struct intel_renderbuffer *back_rb;
front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
memset(attachments, 0, sizeof(attachments));
if ((_mesa_is_front_buffer_drawing(fb) ||
_mesa_is_front_buffer_reading(fb) ||
!back_rb) && front_rb) {
/* If a fake front buffer is in use, then querying for
* __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
* the real front buffer to the fake front buffer. So before doing the
* query, we need to make sure all the pending drawing has landed in the
* real front buffer.
*/
intel_flush(&intel->ctx);
intel_flush_front(&intel->ctx);
attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
attachments[i++] = intel_bits_per_pixel(front_rb);
} else if (front_rb && intel->front_buffer_dirty) {
/* We have pending front buffer rendering, but we aren't querying for a
* front buffer. If the front buffer we have is a fake front buffer,
* the X server is going to throw it away when it processes the query.
* So before doing the query, make sure all the pending drawing has
* landed in the real front buffer.
*/
intel_flush(&intel->ctx);
intel_flush_front(&intel->ctx);
}
if (back_rb) {
attachments[i++] = __DRI_BUFFER_BACK_LEFT;
attachments[i++] = intel_bits_per_pixel(back_rb);
}
assert(i <= ARRAY_SIZE(attachments));
*buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
&drawable->w,
&drawable->h,
attachments, i / 2,
buffer_count,
drawable->loaderPrivate);
}
/**
* \brief Assign a DRI buffer's DRM region to a renderbuffer.
*
* This is called from intel_update_renderbuffers().
*
* \par Note:
* DRI buffers whose attachment point is DRI2BufferStencil or
* DRI2BufferDepthStencil are handled as special cases.
*
* \param buffer_name is a human readable name, such as "dri2 front buffer",
* that is passed to intel_region_alloc_for_handle().
*
* \see intel_update_renderbuffers()
* \see intel_region_alloc_for_handle()
*/
static void
intel_process_dri2_buffer(struct intel_context *intel,
__DRIdrawable *drawable,
__DRIbuffer *buffer,
struct intel_renderbuffer *rb,
const char *buffer_name)
{
struct intel_region *region = NULL;
if (!rb)
return;
/* We try to avoid closing and reopening the same BO name, because the first
* use of a mapping of the buffer involves a bunch of page faulting which is
* moderately expensive.
*/
if (rb->mt &&
rb->mt->region &&
rb->mt->region->name == buffer->name)
return;
if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
fprintf(stderr,
"attaching buffer %d, at %d, cpp %d, pitch %d\n",
buffer->name, buffer->attachment,
buffer->cpp, buffer->pitch);
}
intel_miptree_release(&rb->mt);
region = intel_region_alloc_for_handle(intel->intelScreen,
buffer->cpp,
drawable->w,
drawable->h,
buffer->pitch,
buffer->name,
buffer_name);
if (!region)
return;
rb->mt = intel_miptree_create_for_dri2_buffer(intel,
buffer->attachment,
intel_rb_format(rb),
region);
intel_region_release(®ion);
}
/**
* \brief Query DRI Image loader to obtain a DRIdrawable's buffers.
*
* To determine which DRI buffers to request, examine the renderbuffers
* attached to the drawable's framebuffer. Then request the buffers with
* dri3
*
* This is called from intel_update_renderbuffers().
*
* \param drawable Drawable whose buffers are queried.
* \param buffers [out] List of buffers returned by DRI2 query.
* \param buffer_count [out] Number of buffers returned.
*
* \see intel_update_renderbuffers()
*/
static void
intel_update_image_buffer(struct intel_context *intel,
__DRIdrawable *drawable,
struct intel_renderbuffer *rb,
__DRIimage *buffer,
enum __DRIimageBufferMask buffer_type)
{
struct intel_region *region = buffer->region;
if (!rb || !region)
return;
unsigned num_samples = rb->Base.Base.NumSamples;
if (rb->mt &&
rb->mt->region &&
rb->mt->region == region)
return;
intel_miptree_release(&rb->mt);
rb->mt = intel_miptree_create_for_image_buffer(intel,
buffer_type,
intel_rb_format(rb),
num_samples,
region);
}
static void
intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable)
{
struct gl_framebuffer *fb = drawable->driverPrivate;
__DRIscreen *screen = intel->intelScreen->driScrnPriv;
struct intel_renderbuffer *front_rb;
struct intel_renderbuffer *back_rb;
struct __DRIimageList images;
unsigned int format;
uint32_t buffer_mask = 0;
int ret;
front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
if (back_rb)
format = intel_rb_format(back_rb);
else if (front_rb)
format = intel_rb_format(front_rb);
else
return;
if (front_rb && (_mesa_is_front_buffer_drawing(fb) ||
_mesa_is_front_buffer_reading(fb) || !back_rb)) {
buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
}
if (back_rb)
buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
ret = screen->image.loader->getBuffers(drawable,
driGLFormatToImageFormat(format),
&drawable->dri2.stamp,
drawable->loaderPrivate,
buffer_mask,
&images);
if (!ret)
return;
if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
drawable->w = images.front->width;
drawable->h = images.front->height;
intel_update_image_buffer(intel,
drawable,
front_rb,
images.front,
__DRI_IMAGE_BUFFER_FRONT);
}
if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
drawable->w = images.back->width;
drawable->h = images.back->height;
intel_update_image_buffer(intel,
drawable,
back_rb,
images.back,
__DRI_IMAGE_BUFFER_BACK);
}
}