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// license:BSD-3-Clause
// copyright-holders:ElSemi
#ifndef MAME_VIDEO_VRENDER0_H
#define MAME_VIDEO_VRENDER0_H
#pragma once
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
class vr0video_device : public device_t,
public device_video_interface
{
public:
vr0video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void set_areas(uint16_t *textureram, uint16_t *frameram);
void regs_map(address_map &map);
void execute_flipping();
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
auto idleskip_cb() { return m_idleskip_cb.bind(); }
uint16_t flip_count_r();
void flip_count_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
int vrender0_ProcessPacket(uint32_t PacketPtr);
devcb_write_line m_idleskip_cb;
struct RenderStateInfo
{
uint32_t Tx;
uint32_t Ty;
uint32_t Txdx;
uint32_t Tydx;
uint32_t Txdy;
uint32_t Tydy;
uint32_t SrcAlphaColor;
uint32_t SrcBlend;
uint32_t DstAlphaColor;
uint32_t DstBlend;
uint32_t ShadeColor;
uint32_t TransColor;
uint32_t TileOffset;
uint32_t FontOffset;
uint32_t PalOffset;
uint32_t PaletteBank;
uint32_t TextureMode;
uint32_t PixelFormat;
uint32_t Width;
uint32_t Height;
};
uint16_t m_InternalPalette[256];
uint32_t m_LastPalUpdate;
RenderStateInfo m_RenderState;
uint8_t *m_textureram;
uint16_t *m_packetram;
uint16_t *m_frameram;
uint16_t cmd_queue_front_r();
void cmd_queue_front_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
uint16_t cmd_queue_rear_r();
uint16_t m_queue_rear, m_queue_front;
uint16_t bank1_select_r();
void bank1_select_w(uint16_t data);
bool m_bank1_select; //!< Select framebuffer bank1 address
uint16_t display_bank_r();
uint8_t m_display_bank; //!< Current display bank
uint16_t render_control_r();
void render_control_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0);
bool m_draw_select; //!< If true, device draws to Front buffer instead of Back
bool m_render_reset; //!< Reset pipeline FIFO
bool m_render_start; //!< Enable pipeline processing
uint8_t m_dither_mode; //!< applied on RGB888 to RGB565 conversions (00: 2x2, 01:4x4, 1x disable)
uint8_t m_flip_count; //!< number of framebuffer "syncs" loaded in the parameter RAM,
//!< a.k.a. how many full (vblank) buffers are ready for the device to parse.
uint16_t *m_DrawDest; //!< frameram pointer to draw buffer area
uint16_t *m_DisplayDest; //!< frameram pointer to display buffer area
};
DECLARE_DEVICE_TYPE(VIDEO_VRENDER0, vr0video_device)
#endif // MAME_VIDEO_VRENDER0_H
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