added via accelerant, a copy of skeleton driver yet.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13583 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
parent
24722904a4
commit
b7a943848a
221
src/add-ons/accelerants/via/GetAccelerantHook.c
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src/add-ons/accelerants/via/GetAccelerantHook.c
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/*
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Copyright 1999, Be Incorporated. All Rights Reserved.
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This file may be used under the terms of the Be Sample Code License.
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Other authors:
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Mark Watson,
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Rudolf Cornelissen 10/2002-4/2004
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*/
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#define MODULE_BIT 0x08000000
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#include "acc_std.h"
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/*
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The standard entry point. Given a uint32 feature identifier, this routine
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returns a pointer to the function that implements the feature. Some features
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require more information than just the identifier to select the proper
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function. The extra information (which is specific to the feature) is
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pointed at by the void *data parameter. By default, no extra information
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is available. Any extra information available to choose the function will be
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noted on a case by case below.
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*/
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/*
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These definitions are out of pure lazyness.
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*/
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#define CHKO(x) case B_##x: \
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if (check_overlay_capability(B_##x) == B_OK) return (void *)x; else return (void *)0
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#define CHKA(x) case B_##x: \
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if (check_acc_capability(B_##x) == B_OK) return (void *)x; else return (void *)0
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#define HOOK(x) case B_##x: return (void *)x
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#define ZERO(x) case B_##x: return (void *)0
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#define HRDC(x) case B_##x: return si->settings.hardcursor? (void *)x: (void *)0; // apsed
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void * get_accelerant_hook(uint32 feature, void *data)
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{
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switch (feature)
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{
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/*
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One of either B_INIT_ACCELERANT or B_CLONE_ACCELERANT will be requested and
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subsequently called before any other hook is requested. All other feature
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hook selections can be predicated on variables assigned during the accelerant
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initialization process.
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*/
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/* initialization */
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HOOK(INIT_ACCELERANT);
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HOOK(CLONE_ACCELERANT);
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HOOK(ACCELERANT_CLONE_INFO_SIZE);
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HOOK(GET_ACCELERANT_CLONE_INFO);
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HOOK(UNINIT_ACCELERANT);
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HOOK(GET_ACCELERANT_DEVICE_INFO);
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HOOK(ACCELERANT_RETRACE_SEMAPHORE);
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/* mode configuration */
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HOOK(ACCELERANT_MODE_COUNT);
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HOOK(GET_MODE_LIST);
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HOOK(PROPOSE_DISPLAY_MODE);
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HOOK(SET_DISPLAY_MODE);
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HOOK(GET_DISPLAY_MODE);
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HOOK(GET_FRAME_BUFFER_CONFIG);
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HOOK(GET_PIXEL_CLOCK_LIMITS);
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HOOK(MOVE_DISPLAY);
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HOOK(SET_INDEXED_COLORS);
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HOOK(GET_TIMING_CONSTRAINTS);
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HOOK(DPMS_CAPABILITIES);
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HOOK(DPMS_MODE);
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HOOK(SET_DPMS_MODE);
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/* cursor managment */
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HRDC(SET_CURSOR_SHAPE);
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HRDC(MOVE_CURSOR);
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HRDC(SHOW_CURSOR);
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/* synchronization */
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HOOK(ACCELERANT_ENGINE_COUNT);
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HOOK(ACQUIRE_ENGINE);
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HOOK(RELEASE_ENGINE);
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HOOK(WAIT_ENGINE_IDLE);
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HOOK(GET_SYNC_TOKEN);
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HOOK(SYNC_TO_TOKEN);
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/*
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Depending on the engine architecture, you may choose to provide a different
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function to be used with each bit-depth for example.
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Note: These hooks are re-acquired by the app_server after each mode switch.
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*/
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/* only export video overlay functions if card is capable of it */
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// CHKO(OVERLAY_COUNT);
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// CHKO(OVERLAY_SUPPORTED_SPACES);
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// CHKO(OVERLAY_SUPPORTED_FEATURES);
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// CHKO(ALLOCATE_OVERLAY_BUFFER);
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// CHKO(RELEASE_OVERLAY_BUFFER);
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// CHKO(GET_OVERLAY_CONSTRAINTS);
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// CHKO(ALLOCATE_OVERLAY);
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// CHKO(RELEASE_OVERLAY);
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// CHKO(CONFIGURE_OVERLAY);
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/*
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When requesting an acceleration hook, the calling application provides a
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pointer to the display_mode for which the acceleration function will be used.
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Depending on the engine architecture, you may choose to provide a different
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function to be used with each bit-depth. In the sample driver we return
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the same function all the time.
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Note: These hooks are re-acquired by the app_server after each mode switch.
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*/
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/* only export 2D acceleration functions in modes that are capable of it */
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/* used by the app_server and applications (BWindowScreen) */
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CHKA(SCREEN_TO_SCREEN_BLIT);
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CHKA(FILL_RECTANGLE);
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CHKA(INVERT_RECTANGLE);
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CHKA(FILL_SPAN);
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/* not (yet) used by the app_server:
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* so just for application use (BWindowScreen) */
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// CHKA(SCREEN_TO_SCREEN_TRANSPARENT_BLIT);
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// CHKA(SCREEN_TO_SCREEN_SCALED_FILTERED_BLIT;
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}
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/* Return a null pointer for any feature we don't understand. */
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return 0;
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}
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#undef CHKO
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#undef CHKA
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#undef HOOK
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#undef ZERO
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#undef HRDC
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status_t check_overlay_capability(uint32 feature)
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{
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char *msg = "";
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/* setup logmessage text */
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switch (feature)
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{
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case B_OVERLAY_COUNT:
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msg = "B_OVERLAY_COUNT";
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break;
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case B_OVERLAY_SUPPORTED_SPACES:
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msg = "B_OVERLAY_SUPPORTED_SPACES";
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break;
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case B_OVERLAY_SUPPORTED_FEATURES:
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msg = "B_OVERLAY_SUPPORTED_FEATURES";
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break;
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case B_ALLOCATE_OVERLAY_BUFFER:
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msg = "B_ALLOCATE_OVERLAY_BUFFER";
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break;
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case B_RELEASE_OVERLAY_BUFFER:
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msg = "B_RELEASE_OVERLAY_BUFFER";
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break;
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case B_GET_OVERLAY_CONSTRAINTS:
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msg = "B_GET_OVERLAY_CONSTRAINTS";
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break;
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case B_ALLOCATE_OVERLAY:
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msg = "B_ALLOCATE_OVERLAY";
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break;
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case B_RELEASE_OVERLAY:
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msg = "B_RELEASE_OVERLAY";
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break;
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case B_CONFIGURE_OVERLAY:
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msg = "B_CONFIGURE_OVERLAY";
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break;
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default:
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msg = "UNKNOWN";
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break;
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}
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/* all supported cards have a bes */
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LOG(4, ("Overlay: Exporting hook %s.\n", msg));
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return B_OK;
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}
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status_t check_acc_capability(uint32 feature)
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{
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char *msg = "";
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/* setup logmessage text */
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switch (feature)
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{
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case B_SCREEN_TO_SCREEN_BLIT:
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msg = "B_SCREEN_TO_SCREEN_BLIT";
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break;
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case B_FILL_RECTANGLE:
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msg = "B_FILL_RECTANGLE";
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break;
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case B_INVERT_RECTANGLE:
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msg = "B_INVERT_RECTANGLE";
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break;
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case B_FILL_SPAN:
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msg = "B_FILL_SPAN";
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break;
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case B_SCREEN_TO_SCREEN_TRANSPARENT_BLIT:
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msg = "B_SCREEN_TO_SCREEN_TRANSPARENT_BLIT";
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break;
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case B_SCREEN_TO_SCREEN_SCALED_FILTERED_BLIT:
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msg = "B_SCREEN_TO_SCREEN_SCALED_FILTERED_BLIT";
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break;
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default:
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msg = "UNKNOWN";
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break;
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}
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/* hardware acceleration is only supported in modes with upto a certain
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* memory pitch.. */
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if (si->acc_mode)
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{
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LOG(4, ("Acc: Exporting hook %s.\n", msg));
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return B_OK;
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}
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else
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{
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LOG(4, ("Acc: Not exporting hook %s.\n", msg));
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return B_ERROR;
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}
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}
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