105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
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/*
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* SVGA3D example: Simple BLIT (Block Image Transfer) which updates
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* the render target surface ID.
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*
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* Copyright (C) 2008-2009 VMware, Inc. Licensed under the MIT
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* License, please see the README.txt. All rights reserved.
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*/
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#include "types.h"
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#include "svga3dutil.h"
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#include "svga3dtext.h"
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FPSCounterState gFPS;
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/*
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* Alpha, red, green, blue components of color.
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*/
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static uint32 a = 255, r = 0, g = 0, b = 0;
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/*
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* DMA pools allow for the allocation of GMR memory.
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* The re-use policy is handled by the allocation routines.
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*/
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static uint32 blitSize = 0;
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DMAPool blitDMA;
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/*
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* render --
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*
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* Set up render state, and use surface DMA to update the
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* render target with a solid color that goes from black
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* to white.
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*
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*/
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void
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render(void)
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{
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DMAPoolBuffer *dma = NULL;
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uint32 *buffer = NULL;
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uint32 color;
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dma = SVGA3DUtil_DMAPoolGetBuffer(&blitDMA);
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buffer = (uint32 *)dma->buffer;
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/* uint32 memset. */
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color = ((a&255) << 24) | ((r&255) << 16) | ((b&255) << 8) | (g&255);
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memset32(buffer, color, blitSize / sizeof *buffer);
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r++; g++; b++;
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/*
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* Copy pixel data from our temporary memory in the GMR into
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* the render target. This is a BLIT operation from memory
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* in the guest to the host render target.
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*/
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SVGA3DUtil_SurfaceDMA2D(gFullscreen.colorImage.sid, &dma->ptr,
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SVGA3D_WRITE_HOST_VRAM,
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gSVGA.width, gSVGA.height);
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SVGA3DUtil_AsyncCall((AsyncCallFn) SVGA3DUtil_DMAPoolFreeBuffer, dma);
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}
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/*
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* main --
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*
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* Our example's entry point, invoked directly by the bootloader.
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*/
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int
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main(void)
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{
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SVGA3DUtil_InitFullscreen(CID, 800, 600);
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SVGA3DText_Init();
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/*
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* Allocate 2 buffers for DMA. Each buffer is the size of the display
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* so that we can fill the buffers with color data and DMA that buffer
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* to the render target.
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*/
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blitSize = gSVGA.width * gSVGA.height * sizeof(uint32);
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SVGA3DUtil_AllocDMAPool(&blitDMA, blitSize, 4);
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while (1) {
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if (SVGA3DUtil_UpdateFPSCounter(&gFPS)) {
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Console_Clear();
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Console_Format("VMware SVGA3D Example:\n"
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"Simple BLIT of image into render target.\n%s",
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gFPS.text);
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SVGA3DText_Update();
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VMBackdoor_VGAScreenshot();
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}
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SVGA3DUtil_ClearFullscreen(CID, SVGA3D_CLEAR_COLOR, 0x113366, 1.0f, 0);
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render();
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SVGA3DText_Draw();
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SVGA3DUtil_PresentFullscreen();
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}
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return 0;
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}
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