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//declarations of register addresses:
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#define GFX_CONTROL (GFX_BASEADDR + 0x00) /* Control Register */
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#define GFX_STATUS (GFX_BASEADDR + 0x04) /* Status Register */
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#define GFX_ALPHA (GFX_BASEADDR + 0x08) /* Alpha channel Register */
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#define GFX_COLORKEY (GFX_BASEADDR + 0x0c) /* Colorkey Register */
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#define GFX_TARGET_BASE (GFX_BASEADDR + 0x10) /* Offset to "Target" framebuffer */
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#define GFX_TARGET_SIZE_X (GFX_BASEADDR + 0x14) /* Target Width */
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#define GFX_TARGET_SIZE_Y (GFX_BASEADDR + 0x18) /* Target Height */
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#define GFX_TEX0_BASE (GFX_BASEADDR + 0x1c) /* Offset to texturebuffer */
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#define GFX_TEX0_SIZE_X (GFX_BASEADDR + 0x20) /* Texturebuffer Width */
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#define GFX_TEX0_SIZE_Y (GFX_BASEADDR + 0x24) /* Texturebuffer Height*/
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#define GFX_SRC_PIXEL0_X (GFX_BASEADDR + 0x28) /* source rect spanned by pixel0 and pixel1, ex a position in a image */
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#define GFX_SRC_PIXEL0_Y (GFX_BASEADDR + 0x2c) /* 0****** */
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#define GFX_SRC_PIXEL1_X (GFX_BASEADDR + 0x30) /* ******* */
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#define GFX_SRC_PIXEL1_Y (GFX_BASEADDR + 0x34) /* ******1 */
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#define GFX_DEST_PIXEL_X (GFX_BASEADDR + 0x38) /* Destination pixels, used to draw Rects,Lines,Curves or Triangles */
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#define GFX_DEST_PIXEL_Y (GFX_BASEADDR + 0x3c)
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#define GFX_DEST_PIXEL_Z (GFX_BASEADDR + 0x40)
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#define GFX_AA (GFX_BASEADDR + 0x44)
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#define GFX_AB (GFX_BASEADDR + 0x48)
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#define GFX_AC (GFX_BASEADDR + 0x4c)
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#define GFX_TX (GFX_BASEADDR + 0x50)
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#define GFX_BA (GFX_BASEADDR + 0x54)
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#define GFX_BB (GFX_BASEADDR + 0x58)
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#define GFX_BC (GFX_BASEADDR + 0x5c)
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#define GFX_TY (GFX_BASEADDR + 0x60)
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#define GFX_CA (GFX_BASEADDR + 0x64)
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#define GFX_CB (GFX_BASEADDR + 0x68)
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#define GFX_CC (GFX_BASEADDR + 0x6c)
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#define GFX_TZ (GFX_BASEADDR + 0x70)
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#define GFX_CLIP_PIXEL0_X (GFX_BASEADDR + 0x74) /* Clip Rect registers, only pixels inside the clip rect */
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#define GFX_CLIP_PIXEL0_Y (GFX_BASEADDR + 0x78) /* will be drawn on the screen when clipping is enabled. */
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#define GFX_CLIP_PIXEL1_X (GFX_BASEADDR + 0x7c)
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#define GFX_CLIP_PIXEL1_Y (GFX_BASEADDR + 0x80)
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#define GFX_COLOR0 (GFX_BASEADDR + 0x84) /* Color registers, Color0 is mostly used. */
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#define GFX_COLOR1 (GFX_BASEADDR + 0x88) /* Color 1 & 2 is only used in interpolation */
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#define GFX_COLOR2 (GFX_BASEADDR + 0x8c) /* ex. triangle, one color from each corner */
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