/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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 "context.h"
#include "framebuffer.h"
#include "matrix.h"
#include "renderbuffer.h"
#include "simple_list.h"
#include "utils.h"
#include "vblank.h"
#include "xmlpool.h"
#include "intel_screen.h"
#include "intel_buffers.h"
#include "intel_tex.h"
#include "intel_span.h"
#include "intel_tris.h"
#include "intel_ioctl.h"
#include "intel_fbo.h"
#include "i830_dri.h"
#include "dri_bufpool.h"
#include "intel_regions.h"
#include "intel_batchbuffer.h"
PUBLIC const char __driConfigOptions[] =
DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
DRI_CONF_FORCE_S3TC_ENABLE(false)
DRI_CONF_ALLOW_LARGE_TEXTURES(1)
DRI_CONF_SECTION_END DRI_CONF_END;
const GLuint __driNConfigOptions = 4;
#ifdef USE_NEW_INTERFACE
static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
#endif /*USE_NEW_INTERFACE */
extern const struct dri_extension card_extensions[];
/**
* Map all the memory regions described by the screen.
* \return GL_TRUE if success, GL_FALSE if error.
*/
GLboolean
intelMapScreenRegions(__DRIscreenPrivate * sPriv)
{
intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
if (intelScreen->front.handle) {
if (drmMap(sPriv->fd,
intelScreen->front.handle,
intelScreen->front.size,
(drmAddress *) & intelScreen->front.map) != 0) {
_mesa_problem(NULL, "drmMap(frontbuffer) failed!");
return GL_FALSE;
}
}
else {
_mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
}
if (0)
printf("Mappings: front: %p\n", intelScreen->front.map);
return GL_TRUE;
}
static struct intel_region *
intel_recreate_static(intelScreenPrivate *intelScreen,
struct intel_region *region,
GLuint mem_type,
GLuint offset,
void *virtual,
GLuint cpp, GLuint pitch, GLuint height)
{
if (region) {
intel_region_update_static(intelScreen, region, mem_type, offset,
virtual, cpp, pitch, height);
} else {
region = intel_region_create_static(intelScreen, mem_type, offset,
virtual, cpp, pitch, height);
}
return region;
}
/* Create intel_region structs to describe the static front,back,depth
* buffers created by the xserver.
* Only used for real front buffer now.
*
* Note that these don't allocate video memory, just describe
* allocations already made by the X server.
*/
static void
intel_recreate_static_regions(intelScreenPrivate *intelScreen)
{
/* this is the real front buffer which is only used for blitting to */
intelScreen->front_region =
intel_recreate_static(intelScreen,
intelScreen->front_region,
DRM_BO_FLAG_MEM_TT,
intelScreen->front.offset,
intelScreen->front.map,
intelScreen->cpp,
intelScreen->front.pitch / intelScreen->cpp,
intelScreen->height);
}
/**
* Use the information in the sarea to update the screen parameters
* related to screen rotation. Needs to be called locked.
*/
void
intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
{
intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
intelUnmapScreenRegions(intelScreen);
intelUpdateScreenFromSAREA(intelScreen, sarea);
if (!intelMapScreenRegions(sPriv)) {
fprintf(stderr, "ERROR Remapping screen regions!!!\n");
}
intel_recreate_static_regions(intelScreen);
}
void
intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
{
#define REALLY_UNMAP 1
if (intelScreen->front.map) {
#if REALLY_UNMAP
if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
printf("drmUnmap front failed!\n");
#endif
intelScreen->front.map = NULL;
}
}
static void
intelPrintDRIInfo(intelScreenPrivate * intelScreen,
__DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
{
fprintf(stderr, "*** Front size: 0x%x offset: 0x%x pitch: %d\n",
intelScreen->front.size, intelScreen->front.offset,
intelScreen->front.pitch);
fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
}
static void
intelPrintSAREA(const drmI830Sarea * sarea)
{
fprintf(stderr, "SAREA: sarea width %d height %d\n", sarea->width,
sarea->height);
fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
fprintf(stderr,
"SAREA: front offset: 0x%08x size: 0x%x handle: 0x%x\n",
sarea->front_offset, sarea->front_size,
(unsigned) sarea->front_handle);
fprintf(stderr,
"SAREA: back offset: 0x%08x size: 0x%x handle: 0x%x\n",
sarea->back_offset, sarea->back_size,
(unsigned) sarea->back_handle);
fprintf(stderr, "SAREA: depth offset: 0x%08x size: 0x%x handle: 0x%x\n",
sarea->depth_offset, sarea->depth_size,
(unsigned) sarea->depth_handle);
fprintf(stderr, "SAREA: tex offset: 0x%08x size: 0x%x handle: 0x%x\n",
sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
fprintf(stderr,
"SAREA: rotated offset: 0x%08x size: 0x%x\n",
sarea->rotated_offset, sarea->rotated_size);
fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
}
/**
* A number of the screen parameters are obtained/computed from
* information in the SAREA. This function updates those parameters.
*/
void
intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
drmI830Sarea * sarea)
{
intelScreen->width = sarea->width;
intelScreen->height = sarea->height;
intelScreen->front.offset = sarea->front_offset;
intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
intelScreen->front.handle = sarea->front_handle;
intelScreen->front.size = sarea->front_size;
if (0)
intelPrintSAREA(sarea);
}
GLboolean
intelCreatePools(intelScreenPrivate *intelScreen)
{
unsigned batchPoolSize = 1024*1024;
__DRIscreenPrivate * sPriv = intelScreen->driScrnPriv;
if (intelScreen->havePools)
return GL_TRUE;
batchPoolSize /= intelScreen->maxBatchSize;
intelScreen->regionPool = driDRMPoolInit(sPriv->fd);
if (!intelScreen->regionPool)
return GL_FALSE;
intelScreen->staticPool = driDRMStaticPoolInit(sPriv->fd);
if (!intelScreen->staticPool)
return GL_FALSE;
intelScreen->texPool = intelScreen->regionPool;
intelScreen->batchPool = driBatchPoolInit(sPriv->fd,
DRM_BO_FLAG_EXE |
DRM_BO_FLAG_MEM_TT |
DRM_BO_FLAG_MEM_LOCAL,
intelScreen->maxBatchSize,
batchPoolSize, 5);
if (!intelScreen->batchPool) {
fprintf(stderr, "Failed to initialize batch pool - possible incorrect agpgart installed\n");
return GL_FALSE;
}
intel_recreate_static_regions(intelScreen);
intelScreen->havePools = GL_TRUE;
return GL_TRUE;
}
static GLboolean
intelInitDriver(__DRIscreenPrivate * sPriv)
{
intelScreenPrivate *intelScreen;
I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
drmI830Sarea *sarea;
PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
(PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
getProcAddress("glxEnableExtension"));
void *const psc = sPriv->psc->screenConfigs;
if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
fprintf(stderr,
"\nERROR! sizeof(I830DRIRec) does not match passed size from device driver\n");
return GL_FALSE;
}
/* Allocate the private area */
intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
if (!intelScreen) {
fprintf(stderr, "\nERROR! Allocating private area failed\n");
return GL_FALSE;
}
/* parse information in __driConfigOptions */
driParseOptionInfo(&intelScreen->optionCache,
__driConfigOptions, __driNConfigOptions);
intelScreen->driScrnPriv = sPriv;
sPriv->private = (void *) intelScreen;
intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
sarea = (drmI830Sarea *)
(((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
intelScreen->maxBatchSize = BATCH_SZ;
intelScreen->deviceID = gDRIPriv->deviceID;
if (intelScreen->deviceID == PCI_CHIP_I865_G)
intelScreen->maxBatchSize = 4096;
intelScreen->mem = gDRIPriv->mem;
intelScreen->cpp = gDRIPriv->cpp;
switch (gDRIPriv->bitsPerPixel) {
case 16:
break;
case 32:
break;
default:
exit(1);
break;
}
intelUpdateScreenFromSAREA(intelScreen, sarea);
if (!intelMapScreenRegions(sPriv)) {
fprintf(stderr, "\nERROR! mapping regions\n");
_mesa_free(intelScreen);
sPriv->private = NULL;
return GL_FALSE;
}
intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
if (0)
intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
intelScreen->drmMinor = sPriv->drmMinor;
/* Determine if IRQs are active? */
{
int ret;
drmI830GetParam gp;
gp.param = I830_PARAM_IRQ_ACTIVE;
gp.value = &intelScreen->irq_active;
ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
&gp, sizeof(gp));
if (ret) {
fprintf(stderr, "drmI830GetParam: %d\n", ret);
return GL_FALSE;
}
}
/* Determine if batchbuffers are allowed */
{
int ret;
drmI830GetParam gp;
gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
gp.value = &intelScreen->allow_batchbuffer;
ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
&gp, sizeof(gp));
if (ret) {
fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
return GL_FALSE;
}
}
if (glx_enable_extension != NULL) {
(*glx_enable_extension) (psc, "GLX_SGI_swap_control");
(*glx_enable_extension) (psc, "GLX_SGI_video_sync");
(*glx_enable_extension) (psc, "GLX_MESA_swap_control");
(*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
(*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
}
return GL_TRUE;
}
static void
intelDestroyScreen(__DRIscreenPrivate * sPriv)
{
intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
intelUnmapScreenRegions(intelScreen);
if (intelScreen->havePools) {
driPoolTakeDown(intelScreen->regionPool);
driPoolTakeDown(intelScreen->staticPool);
driPoolTakeDown(intelScreen->batchPool);
}
FREE(intelScreen);
sPriv->private = NULL;
}
/**
* This is called when we need to set up GL rendering to a new X window.
*/
static GLboolean
intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
__DRIdrawablePrivate * driDrawPriv,
const __GLcontextModes * mesaVis, GLboolean isPixmap)
{
#if 0
intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
#endif
if (isPixmap) {
return GL_FALSE; /* not implemented */
}
else {
GLboolean swStencil = (mesaVis->stencilBits > 0 &&
mesaVis->depthBits != 24);
GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
if (!intel_fb)
return GL_FALSE;
_mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
{
/* fake frontbuffer */
/* XXX allocation should only happen in the unusual case
it's actually needed */
intel_fb->color_rb[0]
= intel_new_renderbuffer_fb(rgbFormat);
_mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
&intel_fb->color_rb[0]->Base);
}
if (mesaVis->doubleBufferMode) {
intel_fb->color_rb[1]
= intel_new_renderbuffer_fb(rgbFormat);
_mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
&intel_fb->color_rb[1]->Base);
#if 0
if (screen->third.handle) {
struct gl_renderbuffer *tmp_rb = NULL;
intel_fb->color_rb[2]
= intel_new_renderbuffer_fb(rgbFormat);
_mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
}
#endif
}
if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
/* combined depth/stencil buffer */
struct intel_renderbuffer *depthStencilRb
= intel_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
/* note: bind RB to two attachment points */
_mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
&depthStencilRb->Base);
_mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
&depthStencilRb->Base);
}
else if (mesaVis->depthBits == 16) {
/* just 16-bit depth buffer, no hw stencil */
struct intel_renderbuffer *depthRb
= intel_new_renderbuffer_fb(GL_DEPTH_COMPONENT16);
_mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
}
/* now add any/all software-based renderbuffers we may need */
_mesa_add_soft_renderbuffers(&intel_fb->Base,
GL_FALSE, /* never sw color */
GL_FALSE, /* never sw depth */
swStencil, mesaVis->accumRedBits > 0,
GL_FALSE, /* never sw alpha */
GL_FALSE /* never sw aux */ );
driDrawPriv->driverPrivate = (void *) intel_fb;
return GL_TRUE;
}
}
static void
intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
{
_mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
}
/**
* Get information about previous buffer swaps.
*/
static int
intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
{
struct intel_framebuffer *intel_fb;
if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
|| (sInfo == NULL)) {
return -1;
}
intel_fb = dPriv->driverPrivate;
sInfo->swap_count = intel_fb->swap_count;
sInfo->swap_ust = intel_fb->swap_ust;
sInfo->swap_missed_count = intel_fb->swap_missed_count;
sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
: 0.0;
return 0;
}
/* There are probably better ways to do this, such as an
* init-designated function to register chipids and createcontext
* functions.
*/
extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
__DRIcontextPrivate * driContextPriv,
void *sharedContextPrivate);
extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
__DRIcontextPrivate * driContextPriv,
void *sharedContextPrivate);
static GLboolean
intelCreateContext(const __GLcontextModes * mesaVis,
__DRIcontextPrivate * driContextPriv,
void *sharedContextPrivate)
{
__DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
switch (intelScreen->deviceID) {
/* Don't deal with i830 until texture work complete:
*/
case PCI_CHIP_845_G:
case PCI_CHIP_I830_M:
case PCI_CHIP_I855_GM:
case PCI_CHIP_I865_G:
return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
case PCI_CHIP_I915_G:
case PCI_CHIP_I915_GM:
case PCI_CHIP_I945_G:
case PCI_CHIP_I945_GM:
case PCI_CHIP_I945_GME:
case PCI_CHIP_G33_G:
case PCI_CHIP_Q35_G:
case PCI_CHIP_Q33_G:
return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
default:
fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
return GL_FALSE;
}
}
static const struct __DriverAPIRec intelAPI = {
.InitDriver = intelInitDriver,
.DestroyScreen = intelDestroyScreen,
.CreateContext = intelCreateContext,
.DestroyContext = intelDestroyContext,
.CreateBuffer = intelCreateBuffer,
.DestroyBuffer = intelDestroyBuffer,
.SwapBuffers = intelSwapBuffers,
.MakeCurrent = intelMakeCurrent,
.UnbindContext = intelUnbindContext,
.GetSwapInfo = intelGetSwapInfo,
.GetMSC = driGetMSC32,
.WaitForMSC = driWaitForMSC32,
.WaitForSBC = NULL,
.SwapBuffersMSC = NULL,
.CopySubBuffer = intelCopySubBuffer,
.setTexOffset = intelSetTexOffset,
};
static __GLcontextModes *
intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
unsigned stencil_bits, GLboolean have_back_buffer)
{
__GLcontextModes *modes;
__GLcontextModes *m;
unsigned num_modes;
unsigned depth_buffer_factor;
unsigned back_buffer_factor;
GLenum fb_format;
GLenum fb_type;
/* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
* support pageflipping at all.
*/
static const GLenum back_buffer_modes[] = {
GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
};
u_int8_t depth_bits_array[3];
u_int8_t stencil_bits_array[3];
depth_bits_array[0] = 0;
depth_bits_array[1] = depth_bits;
depth_bits_array[2] = depth_bits;
/* Just like with the accumulation buffer, always provide some modes
* with a stencil buffer. It will be a sw fallback, but some apps won't
* care about that.
*/
stencil_bits_array[0] = 0;
stencil_bits_array[1] = 0;
if (depth_bits == 24)
stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
back_buffer_factor = (have_back_buffer) ? 3 : 1;
num_modes = depth_buffer_factor * back_buffer_factor * 4;
if (pixel_bits == 16) {
fb_format = GL_RGB;
fb_type = GL_UNSIGNED_SHORT_5_6_5;
}
else {
fb_format = GL_BGRA;
fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
}
modes =
(*dri_interface->createContextModes) (num_modes,
sizeof(__GLcontextModes));
m = modes;
if (!driFillInModes(&m, fb_format, fb_type,
depth_bits_array, stencil_bits_array,
depth_buffer_factor, back_buffer_modes,
back_buffer_factor, GLX_TRUE_COLOR)) {
fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
__LINE__);
return NULL;
}
if (!driFillInModes(&m, fb_format, fb_type,
depth_bits_array, stencil_bits_array,
depth_buffer_factor, back_buffer_modes,
back_buffer_factor, GLX_DIRECT_COLOR)) {
fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
__LINE__);
return NULL;
}
/* Mark the visual as slow if there are "fake" stencil bits.
*/
for (m = modes; m != NULL; m = m->next) {
if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
m->visualRating = GLX_SLOW_CONFIG;
}
}
return modes;
}
/**
* This is the bootstrap function for the driver. libGL supplies all of the
* requisite information about the system, and the driver initializes itself.
* This routine also fills in the linked list pointed to by \c driver_modes
* with the \c __GLcontextModes that the driver can support for windows or
* pbuffers.
*
* \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
* failure.
*/
PUBLIC void *
__driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
__DRIscreen * psc,
const __GLcontextModes * modes,
const __DRIversion * ddx_version,
const __DRIversion * dri_version,
const __DRIversion * drm_version,
const __DRIframebuffer * frame_buffer,
drmAddress pSAREA, int fd,
int internal_api_version,
const __DRIinterfaceMethods * interface,
__GLcontextModes ** driver_modes)
{
__DRIscreenPrivate *psp;
static const __DRIversion ddx_expected = { 1, 7, 0 };
static const __DRIversion dri_expected = { 4, 0, 0 };
static const __DRIversion drm_expected = { 1, 7, 0 };
dri_interface = interface;
if (!driCheckDriDdxDrmVersions2("i915",
dri_version, &dri_expected,
ddx_version, &ddx_expected,
drm_version, &drm_expected)) {
return NULL;
}
psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
ddx_version, dri_version, drm_version,
frame_buffer, pSAREA, fd,
internal_api_version, &intelAPI);
if (psp != NULL) {
I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
*driver_modes = intelFillInModes(dri_priv->cpp * 8,
(dri_priv->cpp == 2) ? 16 : 24,
(dri_priv->cpp == 2) ? 0 : 8, 1);
/* Calling driInitExtensions here, with a NULL context pointer, does not actually
* enable the extensions. It just makes sure that all the dispatch offsets for all
* the extensions that *might* be enables are known. This is needed because the
* dispatch offsets need to be known when _mesa_context_create is called, but we can't
* enable the extensions until we have a context pointer.
*
* Hello chicken. Hello egg. How are you two today?
*/
driInitExtensions(NULL, card_extensions, GL_FALSE);
}
return (void *) psp;
}
struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
{
/*
* This should probably change to have the screen allocate a dummy
* context at screen creation. For now just use the current context.
*/
GET_CURRENT_CONTEXT(ctx);
if (ctx == NULL) {
/* _mesa_problem(NULL, "No current context in intelScreenContext\n");
return NULL; */
/* need a context for the first time makecurrent is called (for hw lock
when allocating priv buffers) */
if (intelScreen->dummyctxptr == NULL) {
_mesa_problem(NULL, "No current context in intelScreenContext\n");
return NULL;
}
return intelScreen->dummyctxptr;
}
return intel_context(ctx);
}