#include "ibm.h"
#include "device.h"
#include "mem.h"
#include "thread.h"
#include "video.h"
#include "vid_svga.h"
#include "vid_voodoo.h"
#include "vid_voodoo_common.h"
#include "vid_voodoo_display.h"
#include "vid_voodoo_regs.h"
#include "vid_voodoo_render.h"

void voodoo_update_ncc(voodoo_t *voodoo, int tmu) {
	int tbl;

	for (tbl = 0; tbl < 2; tbl++) {
		int col;

		for (col = 0; col < 256; col++) {
			int y = (col >> 4), i = (col >> 2) & 3, q = col & 3;
			int i_r, i_g, i_b;
			int q_r, q_g, q_b;

			y = (voodoo->nccTable[tmu][tbl].y[y >> 2] >> ((y & 3) * 8)) & 0xff;

			i_r = (voodoo->nccTable[tmu][tbl].i[i] >> 18) & 0x1ff;
			if (i_r & 0x100)
				i_r |= 0xfffffe00;
			i_g = (voodoo->nccTable[tmu][tbl].i[i] >> 9) & 0x1ff;
			if (i_g & 0x100)
				i_g |= 0xfffffe00;
			i_b = voodoo->nccTable[tmu][tbl].i[i] & 0x1ff;
			if (i_b & 0x100)
				i_b |= 0xfffffe00;

			q_r = (voodoo->nccTable[tmu][tbl].q[q] >> 18) & 0x1ff;
			if (q_r & 0x100)
				q_r |= 0xfffffe00;
			q_g = (voodoo->nccTable[tmu][tbl].q[q] >> 9) & 0x1ff;
			if (q_g & 0x100)
				q_g |= 0xfffffe00;
			q_b = voodoo->nccTable[tmu][tbl].q[q] & 0x1ff;
			if (q_b & 0x100)
				q_b |= 0xfffffe00;

			voodoo->ncc_lookup[tmu][tbl][col].rgba.r = CLAMP(y + i_r + q_r);
			voodoo->ncc_lookup[tmu][tbl][col].rgba.g = CLAMP(y + i_g + q_g);
			voodoo->ncc_lookup[tmu][tbl][col].rgba.b = CLAMP(y + i_b + q_b);
			voodoo->ncc_lookup[tmu][tbl][col].rgba.a = 0xff;
		}
	}
}

void voodoo_pixelclock_update(voodoo_t *voodoo) {
	int m = (voodoo->dac_pll_regs[0] & 0x7f) + 2;
	int n1 = ((voodoo->dac_pll_regs[0] >> 8) & 0x1f) + 2;
	int n2 = ((voodoo->dac_pll_regs[0] >> 13) & 0x07);
	float t = (14318184.0 * ((float)m / (float)n1)) / (float)(1 << n2);
	double clock_const;
	int line_length;

	if ((voodoo->dac_data[6] & 0xf0) == 0x20 ||
		(voodoo->dac_data[6] & 0xf0) == 0x60 ||
		(voodoo->dac_data[6] & 0xf0) == 0x70)
		t /= 2.0f;

	line_length = (voodoo->hSync & 0xff) + ((voodoo->hSync >> 16) & 0x3ff);

//        pclog("Pixel clock %f MHz hsync %08x line_length %d\n", t, voodoo->hSync, line_length);

	voodoo->pixel_clock = t;

	clock_const = cpuclock / t;
	voodoo->line_time = (uint64_t)((double)line_length * clock_const * (double)(1ull << 32));
}

static void voodoo_calc_clutData(voodoo_t *voodoo) {
	int c;

	for (c = 0; c < 256; c++) {
		voodoo->clutData256[c].r = (voodoo->clutData[c >> 3].r * (8 - (c & 7)) +
			voodoo->clutData[(c >> 3) + 1].r * (c & 7)) >> 3;
		voodoo->clutData256[c].g = (voodoo->clutData[c >> 3].g * (8 - (c & 7)) +
			voodoo->clutData[(c >> 3) + 1].g * (c & 7)) >> 3;
		voodoo->clutData256[c].b = (voodoo->clutData[c >> 3].b * (8 - (c & 7)) +
			voodoo->clutData[(c >> 3) + 1].b * (c & 7)) >> 3;
	}

	for (c = 0; c < 65536; c++) {
		int r = (c >> 8) & 0xf8;
		int g = (c >> 3) & 0xfc;
		int b = (c << 3) & 0xf8;
//                r |= (r >> 5);
//                g |= (g >> 6);
//                b |= (b >> 5);

		voodoo->video_16to32[c] = (voodoo->clutData256[r].r << 16) | (voodoo->clutData256[g].g << 8) | voodoo->clutData256[b].b;
	}
}

#define FILTDIV 256

static int FILTCAP, FILTCAPG, FILTCAPB = 0;        /* color filter threshold values */

void voodoo_generate_filter_v1(voodoo_t *voodoo) {
	int g, h;
	float difference, diffg, diffb;
	float thiscol, thiscolg, thiscolb, lined;
	float fcr, fcg, fcb;

	fcr = FILTCAP * 5;
	fcg = FILTCAPG * 6;
	fcb = FILTCAPB * 5;

	for (g = 0; g < FILTDIV; g++)         // pixel 1
	{
		for (h = 0; h < FILTDIV; h++)      // pixel 2
		{
			difference = (float)(h - g);
			diffg = difference;
			diffb = difference;

			thiscol = thiscolg = thiscolb = g;

			if (difference > FILTCAP)
				difference = FILTCAP;
			if (difference < -FILTCAP)
				difference = -FILTCAP;

			if (diffg > FILTCAPG)
				diffg = FILTCAPG;
			if (diffg < -FILTCAPG)
				diffg = -FILTCAPG;

			if (diffb > FILTCAPB)
				diffb = FILTCAPB;
			if (diffb < -FILTCAPB)
				diffb = -FILTCAPB;

			// hack - to make it not bleed onto black
			//if (g == 0){
			//difference = diffg = diffb = 0;
			//}

			if ((difference < fcr) || (-difference > -fcr))
				thiscol = g + (difference / 2);
			if ((diffg < fcg) || (-diffg > -fcg))
				thiscolg = g + (diffg / 2);                /* need these divides so we can actually undither! */
			if ((diffb < fcb) || (-diffb > -fcb))
				thiscolb = g + (diffb / 2);

			if (thiscol < 0)
				thiscol = 0;
			if (thiscol > FILTDIV - 1)
				thiscol = FILTDIV - 1;

			if (thiscolg < 0)
				thiscolg = 0;
			if (thiscolg > FILTDIV - 1)
				thiscolg = FILTDIV - 1;

			if (thiscolb < 0)
				thiscolb = 0;
			if (thiscolb > FILTDIV - 1)
				thiscolb = FILTDIV - 1;

			voodoo->thefilter[g][h] = thiscol;
			voodoo->thefilterg[g][h] = thiscolg;
			voodoo->thefilterb[g][h] = thiscolb;
		}

		lined = g + 4;
		if (lined > 255)
			lined = 255;
		voodoo->purpleline[g][0] = lined;
		voodoo->purpleline[g][2] = lined;

		lined = g + 0;
		if (lined > 255)
			lined = 255;
		voodoo->purpleline[g][1] = lined;
	}
}

void voodoo_generate_filter_v2(voodoo_t *voodoo) {
	int g, h;
	float difference;
	float thiscol, thiscolg, thiscolb;
	float clr, clg, clb = 0;
	float fcr, fcg, fcb = 0;

	// pre-clamping

	fcr = FILTCAP;
	fcg = FILTCAPG;
	fcb = FILTCAPB;

	if (fcr > 32)
		fcr = 32;
	if (fcg > 32)
		fcg = 32;
	if (fcb > 32)
		fcb = 32;

	for (g = 0; g < 256; g++)                // pixel 1 - our target pixel we want to bleed into
	{
		for (h = 0; h < 256; h++)      // pixel 2 - our main pixel
		{
			float avg;
			float avgdiff;

			difference = (float)(g - h);
			avg = (float)((g + g + g + g + h) / 5);
			avgdiff = avg - (float)((g + h + h + h + h) / 5);
			if (avgdiff < 0)
				avgdiff *= -1;
			if (difference < 0)
				difference *= -1;

			thiscol = thiscolg = thiscolb = g;

			// try lighten
			if (h > g) {
				clr = clg = clb = avgdiff;

				if (clr > fcr)
					clr = fcr;
				if (clg > fcg)
					clg = fcg;
				if (clb > fcb)
					clb = fcb;

				thiscol = g + clr;
				thiscolg = g + clg;
				thiscolb = g + clb;

				if (thiscol > g + FILTCAP)
					thiscol = g + FILTCAP;
				if (thiscolg > g + FILTCAPG)
					thiscolg = g + FILTCAPG;
				if (thiscolb > g + FILTCAPB)
					thiscolb = g + FILTCAPB;

				if (thiscol > g + avgdiff)
					thiscol = g + avgdiff;
				if (thiscolg > g + avgdiff)
					thiscolg = g + avgdiff;
				if (thiscolb > g + avgdiff)
					thiscolb = g + avgdiff;

			}

			if (difference > FILTCAP)
				thiscol = g;
			if (difference > FILTCAPG)
				thiscolg = g;
			if (difference > FILTCAPB)
				thiscolb = g;

			// clamp
			if (thiscol < 0)
				thiscol = 0;
			if (thiscolg < 0)
				thiscolg = 0;
			if (thiscolb < 0)
				thiscolb = 0;

			if (thiscol > 255)
				thiscol = 255;
			if (thiscolg > 255)
				thiscolg = 255;
			if (thiscolb > 255)
				thiscolb = 255;

			// add to the table
			voodoo->thefilter[g][h] = (thiscol);
			voodoo->thefilterg[g][h] = (thiscolg);
			voodoo->thefilterb[g][h] = (thiscolb);

			// debug the ones that don't give us much of a difference
			//if (difference < FILTCAP)
			//pclog("Voodoofilter: %ix%i - %f difference, %f average difference, R=%f, G=%f, B=%f\n", g, h, difference, avgdiff, thiscol, thiscolg, thiscolb);
		}

	}
}

void voodoo_threshold_check(voodoo_t *voodoo) {
	int r, g, b;

	if (!voodoo->scrfilterEnabled)
		return;        /* considered disabled; don't check and generate */

	/* Check for changes, to generate anew table */
	if (voodoo->scrfilterThreshold != voodoo->scrfilterThresholdOld) {
		r = (voodoo->scrfilterThreshold >> 16) & 0xFF;
		g = (voodoo->scrfilterThreshold >> 8) & 0xFF;
		b = voodoo->scrfilterThreshold & 0xFF;

		FILTCAP = r;
		FILTCAPG = g;
		FILTCAPB = b;

		pclog("Voodoo Filter Threshold Check: %06x - RED %i GREEN %i BLUE %i\n", voodoo->scrfilterThreshold, r, g, b);

		voodoo->scrfilterThresholdOld = voodoo->scrfilterThreshold;

		if (voodoo->type == VOODOO_2)
			voodoo_generate_filter_v2(voodoo);
		else
			voodoo_generate_filter_v1(voodoo);

		if (voodoo->type >= VOODOO_BANSHEE)
			voodoo_generate_vb_filters(voodoo, FILTCAP, FILTCAPG);
	}
}

static void voodoo_filterline_v1(voodoo_t *voodoo, uint8_t *fil, int column, uint16_t *src, int line) {
	int x;

	// Scratchpad for avoiding feedback streaks
	uint8_t fil3[(voodoo->h_disp) * 3];

	/* 16 to 32-bit */
	for (x = 0; x < column; x++) {
		fil[x * 3] = ((src[x] & 31) << 3);
		fil[x * 3 + 1] = (((src[x] >> 5) & 63) << 2);
		fil[x * 3 + 2] = (((src[x] >> 11) & 31) << 3);

		// Copy to our scratchpads
		fil3[x * 3 + 0] = fil[x * 3 + 0];
		fil3[x * 3 + 1] = fil[x * 3 + 1];
		fil3[x * 3 + 2] = fil[x * 3 + 2];
	}


	/* lines */

	if (line & 1) {
		for (x = 0; x < column; x++) {
			fil[x * 3] = voodoo->purpleline[fil[x * 3]][0];
			fil[x * 3 + 1] = voodoo->purpleline[fil[x * 3 + 1]][1];
			fil[x * 3 + 2] = voodoo->purpleline[fil[x * 3 + 2]][2];
		}
	}


	/* filtering time */

	for (x = 1; x < column; x++) {
		fil3[(x) * 3] = voodoo->thefilterb[fil[x * 3]][fil[(x - 1) * 3]];
		fil3[(x) * 3 + 1] = voodoo->thefilterg[fil[x * 3 + 1]][fil[(x - 1) * 3 + 1]];
		fil3[(x) * 3 + 2] = voodoo->thefilter[fil[x * 3 + 2]][fil[(x - 1) * 3 + 2]];
	}

	for (x = 1; x < column; x++) {
		fil[(x) * 3] = voodoo->thefilterb[fil3[x * 3]][fil3[(x - 1) * 3]];
		fil[(x) * 3 + 1] = voodoo->thefilterg[fil3[x * 3 + 1]][fil3[(x - 1) * 3 + 1]];
		fil[(x) * 3 + 2] = voodoo->thefilter[fil3[x * 3 + 2]][fil3[(x - 1) * 3 + 2]];
	}

	for (x = 1; x < column; x++) {
		fil3[(x) * 3] = voodoo->thefilterb[fil[x * 3]][fil[(x - 1) * 3]];
		fil3[(x) * 3 + 1] = voodoo->thefilterg[fil[x * 3 + 1]][fil[(x - 1) * 3 + 1]];
		fil3[(x) * 3 + 2] = voodoo->thefilter[fil[x * 3 + 2]][fil[(x - 1) * 3 + 2]];
	}

	for (x = 0; x < column - 1; x++) {
		fil[(x) * 3] = voodoo->thefilterb[fil3[x * 3]][fil3[(x + 1) * 3]];
		fil[(x) * 3 + 1] = voodoo->thefilterg[fil3[x * 3 + 1]][fil3[(x + 1) * 3 + 1]];
		fil[(x) * 3 + 2] = voodoo->thefilter[fil3[x * 3 + 2]][fil3[(x + 1) * 3 + 2]];
	}
}

static void voodoo_filterline_v2(voodoo_t *voodoo, uint8_t *fil, int column, uint16_t *src, int line) {
	int x;

	// Scratchpad for blending filter
	uint8_t fil3[(voodoo->h_disp) * 3];

	/* 16 to 32-bit */
	for (x = 0; x < column; x++) {
		// Blank scratchpads
		fil3[x * 3 + 0] = fil[x * 3 + 0] = ((src[x] & 31) << 3);
		fil3[x * 3 + 1] = fil[x * 3 + 1] = (((src[x] >> 5) & 63) << 2);
		fil3[x * 3 + 2] = fil[x * 3 + 2] = (((src[x] >> 11) & 31) << 3);
	}

	/* filtering time */

	for (x = 1; x < column - 3; x++) {
		fil3[(x + 3) * 3] = voodoo->thefilterb[((src[x + 3] & 31) << 3)][((src[x] & 31) << 3)];
		fil3[(x + 3) * 3 + 1] = voodoo->thefilterg[(((src[x + 3] >> 5) & 63) << 2)][(((src[x] >> 5) & 63) << 2)];
		fil3[(x + 3) * 3 + 2] = voodoo->thefilter[(((src[x + 3] >> 11) & 31) << 3)][(((src[x] >> 11) & 31) << 3)];

		fil[(x + 2) * 3] = voodoo->thefilterb[fil3[(x + 2) * 3]][((src[x] & 31) << 3)];
		fil[(x + 2) * 3 + 1] = voodoo->thefilterg[fil3[(x + 2) * 3 + 1]][(((src[x] >> 5) & 63) << 2)];
		fil[(x + 2) * 3 + 2] = voodoo->thefilter[fil3[(x + 2) * 3 + 2]][(((src[x] >> 11) & 31) << 3)];

		fil3[(x + 1) * 3] = voodoo->thefilterb[fil[(x + 1) * 3]][((src[x] & 31) << 3)];
		fil3[(x + 1) * 3 + 1] = voodoo->thefilterg[fil[(x + 1) * 3 + 1]][(((src[x] >> 5) & 63) << 2)];
		fil3[(x + 1) * 3 + 2] = voodoo->thefilter[fil[(x + 1) * 3 + 2]][(((src[x] >> 11) & 31) << 3)];

		fil[(x - 1) * 3] = voodoo->thefilterb[fil3[(x - 1) * 3]][((src[x] & 31) << 3)];
		fil[(x - 1) * 3 + 1] = voodoo->thefilterg[fil3[(x - 1) * 3 + 1]][(((src[x] >> 5) & 63) << 2)];
		fil[(x - 1) * 3 + 2] = voodoo->thefilter[fil3[(x - 1) * 3 + 2]][(((src[x] >> 11) & 31) << 3)];
	}

	// unroll for edge cases

	fil3[(column - 3) * 3] = voodoo->thefilterb[((src[column - 3] & 31) << 3)][((src[column] & 31) << 3)];
	fil3[(column - 3) * 3 + 1] = voodoo->thefilterg[(((src[column - 3] >> 5) & 63) << 2)][(((src[column] >> 5) & 63) << 2)];
	fil3[(column - 3) * 3 + 2] = voodoo->thefilter[(((src[column - 3] >> 11) & 31) << 3)][(((src[column] >> 11) & 31) << 3)];

	fil3[(column - 2) * 3] = voodoo->thefilterb[((src[column - 2] & 31) << 3)][((src[column] & 31) << 3)];
	fil3[(column - 2) * 3 + 1] = voodoo->thefilterg[(((src[column - 2] >> 5) & 63) << 2)][(((src[column] >> 5) & 63) << 2)];
	fil3[(column - 2) * 3 + 2] = voodoo->thefilter[(((src[column - 2] >> 11) & 31) << 3)][(((src[column] >> 11) & 31) << 3)];

	fil3[(column - 1) * 3] = voodoo->thefilterb[((src[column - 1] & 31) << 3)][((src[column] & 31) << 3)];
	fil3[(column - 1) * 3 + 1] = voodoo->thefilterg[(((src[column - 1] >> 5) & 63) << 2)][(((src[column] >> 5) & 63) << 2)];
	fil3[(column - 1) * 3 + 2] = voodoo->thefilter[(((src[column - 1] >> 11) & 31) << 3)][(((src[column] >> 11) & 31) << 3)];

	fil[(column - 2) * 3] = voodoo->thefilterb[fil3[(column - 2) * 3]][((src[column] & 31) << 3)];
	fil[(column - 2) * 3 + 1] = voodoo->thefilterg[fil3[(column - 2) * 3 + 1]][(((src[column] >> 5) & 63) << 2)];
	fil[(column - 2) * 3 + 2] = voodoo->thefilter[fil3[(column - 2) * 3 + 2]][(((src[column] >> 11) & 31) << 3)];

	fil[(column - 1) * 3] = voodoo->thefilterb[fil3[(column - 1) * 3]][((src[column] & 31) << 3)];
	fil[(column - 1) * 3 + 1] = voodoo->thefilterg[fil3[(column - 1) * 3 + 1]][(((src[column] >> 5) & 63) << 2)];
	fil[(column - 1) * 3 + 2] = voodoo->thefilter[fil3[(column - 1) * 3 + 2]][(((src[column] >> 11) & 31) << 3)];

	fil3[(column - 1) * 3] = voodoo->thefilterb[fil[(column - 1) * 3]][((src[column] & 31) << 3)];
	fil3[(column - 1) * 3 + 1] = voodoo->thefilterg[fil[(column - 1) * 3 + 1]][(((src[column] >> 5) & 63) << 2)];
	fil3[(column - 1) * 3 + 2] = voodoo->thefilter[fil[(column - 1) * 3 + 2]][(((src[column] >> 11) & 31) << 3)];
}

void voodoo_callback(void *p) {
	voodoo_t *voodoo = (voodoo_t *)p;

	if (voodoo->fbiInit0 & FBIINIT0_VGA_PASS) {
		if (voodoo->line < voodoo->v_disp) {
			voodoo_t *draw_voodoo;
			int draw_line;

			if (SLI_ENABLED) {
				if (voodoo == voodoo->set->voodoos[1])
					goto skip_draw;

				if (((voodoo->initEnable & INITENABLE_SLI_MASTER_SLAVE) ? 1 : 0) == (voodoo->line & 1))
					draw_voodoo = voodoo;
				else
					draw_voodoo = voodoo->set->voodoos[1];
				draw_line = voodoo->line >> 1;
			} else {
				if (!(voodoo->fbiInit0 & 1))
					goto skip_draw;
				draw_voodoo = voodoo;
				draw_line = voodoo->line;
			}

			if (draw_voodoo->dirty_line[draw_line]) {
				uint32_t *p = &((uint32_t *)buffer32->line[voodoo->line])[32];
				uint16_t *src = (uint16_t *)&draw_voodoo->fb_mem[draw_voodoo->front_offset + draw_line * draw_voodoo->row_width];
				int x;

				draw_voodoo->dirty_line[draw_line] = 0;

				if (voodoo->line < voodoo->dirty_line_low) {
					voodoo->dirty_line_low = voodoo->line;
					video_wait_for_buffer();
				}
				if (voodoo->line > voodoo->dirty_line_high)
					voodoo->dirty_line_high = voodoo->line;

				if (voodoo->scrfilter && voodoo->scrfilterEnabled) {
					uint8_t fil[(voodoo->h_disp) * 3];              /* interleaved 24-bit RGB */

					if (voodoo->type == VOODOO_2)
						voodoo_filterline_v2(voodoo, fil, voodoo->h_disp, src, voodoo->line);
					else
						voodoo_filterline_v1(voodoo, fil, voodoo->h_disp, src, voodoo->line);

					for (x = 0; x < voodoo->h_disp; x++) {
						p[x] = (voodoo->clutData256[fil[x * 3]].b << 0 | voodoo->clutData256[fil[x * 3 + 1]].g << 8 | voodoo->clutData256[fil[x * 3 + 2]].r << 16);
					}
				} else {
					for (x = 0; x < voodoo->h_disp; x++) {
						p[x] = draw_voodoo->video_16to32[src[x]];
					}
				}
			}
		}
	}
    skip_draw:
	if (voodoo->line == voodoo->v_disp) {
//                pclog("retrace %i %i %08x %i\n", voodoo->retrace_count, voodoo->swap_interval, voodoo->swap_offset, voodoo->swap_pending);
		voodoo->retrace_count++;
		if (SLI_ENABLED && (voodoo->fbiInit2 & FBIINIT2_SWAP_ALGORITHM_MASK) == FBIINIT2_SWAP_ALGORITHM_SLI_SYNC) {
			if (voodoo == voodoo->set->voodoos[0]) {
				voodoo_t *voodoo_1 = voodoo->set->voodoos[1];

				thread_lock_mutex(voodoo->swap_mutex);
				/*Only swap if both Voodoos are waiting for buffer swap*/
				if (voodoo->swap_pending && (voodoo->retrace_count > voodoo->swap_interval) &&
					voodoo_1->swap_pending && (voodoo_1->retrace_count > voodoo_1->swap_interval)) {
					memset(voodoo->dirty_line, 1, 1024);
					voodoo->retrace_count = 0;
					voodoo->front_offset = voodoo->swap_offset;
					if (voodoo->swap_count > 0)
						voodoo->swap_count--;
					voodoo->swap_pending = 0;

					memset(voodoo_1->dirty_line, 1, 1024);
					voodoo_1->retrace_count = 0;
					voodoo_1->front_offset = voodoo_1->swap_offset;
					if (voodoo_1->swap_count > 0)
						voodoo_1->swap_count--;
					voodoo_1->swap_pending = 0;
					thread_unlock_mutex(voodoo->swap_mutex);

					thread_set_event(voodoo->wake_fifo_thread);
					thread_set_event(voodoo_1->wake_fifo_thread);

					voodoo->frame_count++;
					voodoo_1->frame_count++;
				} else
					thread_unlock_mutex(voodoo->swap_mutex);
			}
		} else {
			thread_lock_mutex(voodoo->swap_mutex);
			if (voodoo->swap_pending && (voodoo->retrace_count > voodoo->swap_interval)) {
				voodoo->front_offset = voodoo->swap_offset;
				if (voodoo->swap_count > 0)
					voodoo->swap_count--;
				voodoo->swap_pending = 0;
				thread_unlock_mutex(voodoo->swap_mutex);

				memset(voodoo->dirty_line, 1, 1024);
				voodoo->retrace_count = 0;
				thread_set_event(voodoo->wake_fifo_thread);
				voodoo->frame_count++;
			} else
				thread_unlock_mutex(voodoo->swap_mutex);
		}
		voodoo->v_retrace = 1;
	}
	voodoo->line++;

	if (voodoo->fbiInit0 & FBIINIT0_VGA_PASS) {
		if (voodoo->line == voodoo->v_disp) {
			if (voodoo->dirty_line_high > voodoo->dirty_line_low)
				svga_doblit(0, voodoo->v_disp, voodoo->h_disp, voodoo->v_disp - 1, voodoo->svga);
			if (voodoo->clutData_dirty) {
				voodoo->clutData_dirty = 0;
				voodoo_calc_clutData(voodoo);
			}
			voodoo->dirty_line_high = -1;
			voodoo->dirty_line_low = 2000;
		}
	}

	if (voodoo->line >= voodoo->v_total) {
		voodoo->line = 0;
		voodoo->v_retrace = 0;
	}
	if (voodoo->line_time)
		timer_advance_u64(&voodoo->timer, voodoo->line_time);
	else
		timer_advance_u64(&voodoo->timer, TIMER_USEC * 32);
}
