root / proj / libs / graph / src / graph.c @ 312
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#include <lcom/lcf.h> |
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#include "graph.h" |
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#include "errors.h" |
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#include <stdio.h> |
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|
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#define VC_BIOS_SERV 0x10 /** @brief Interrupt service of video card */ |
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#define VBE_CALL 0x4F /** @brief VBE call function specifier */ |
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|
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#define MBYTE_BASE 0x0 /** @brief Base address (zero address) */ |
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#define MBYTE_SIZE 0xFFFFF /** @brief Size of a mebibyte */ |
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|
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// Graphics Functions
|
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#define VBE_CTRL_INFO 0x00 /** @brief Get VBE Controller Information */ |
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#define VBE_MD_INFO 0x01 /** @brief Get VBE Mode Information */ |
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#define SET_VBE_MD 0x02 /** @brief Set VBE Mode */ |
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|
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// Error codes (AH)
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#define AH_SUCCESS 0x00 /** @brief Success code on BIOS call */ |
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#define AH_FUNC_CALL_FAIL 0x01 /** @brief Function call failed */ |
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#define AH_FUNC_NOT_SUPP 0x02 /** @brief Function call is not supported in current HW configuration */ |
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#define AH_FUNC_INVALID 0x03 /** @brief Invalid function in current video mode */ |
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|
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/// MACROS
|
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#define FAR2PHYS(n) ((((n)>>12) & 0xFFFFFFF0) + ((n) & 0x0000FFFF)) |
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|
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/// STRUCT
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typedef struct __attribute__((packed)) { |
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|
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char VbeSignature[4] ; |
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uint16_t VbeVersion ; |
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uint32_t OemStringPtr ; |
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uint8_t Capabilities[4] ;
|
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uint32_t VideoModePtr ; |
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uint16_t TotalMemory ; |
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|
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uint16_t OemSoftwareRev ; |
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uint32_t OemVendorNamePtr ; |
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uint32_t OemProductNamePtr ; |
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uint32_t OemProductRevPtr ; |
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char Reserved[222] ; |
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|
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char OemData[256] ; |
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} VbeInfoBlock; |
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|
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static vbe_mode_info_t vbe_mem_info;
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|
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/// PRIVATE GET
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static uint16_t (graph_get_bits_pixel) (void){ return vbe_mem_info.BitsPerPixel; } |
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static phys_bytes (graph_get_phys_addr) (void){ return vbe_mem_info.PhysBasePtr; } |
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static unsigned (graph_get_vram_size) (void){ return vbe_mem_info.XResolution * vbe_mem_info.YResolution * graph_get_bytes_pixel(); } |
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//static uint16_t (graph_get_RedMaskSize) (void){ return vbe_mem_info.RedMaskSize ; }
|
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//static uint16_t (graph_get_GreenMaskSize)(void){ return vbe_mem_info.GreenMaskSize; }
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//static uint16_t (graph_get_BlueMaskSize) (void){ return vbe_mem_info.BlueMaskSize ; }
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|
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/// PUBLIC GET
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uint16_t (graph_get_XRes) (void){ return vbe_mem_info.XResolution; } |
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uint16_t (graph_get_YRes) (void){ return vbe_mem_info.YResolution; } |
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uint16_t (graph_get_bytes_pixel) (void){ return (graph_get_bits_pixel() + 7) >> 3; } |
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|
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///
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static int (get_permission)(unsigned int base_addr, unsigned int size) { |
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struct minix_mem_range mmr;
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mmr.mr_base = base_addr; |
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mmr.mr_limit = base_addr + size; |
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return sys_privctl(SELF, SYS_PRIV_ADD_MEM, &mmr);
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} |
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//static int (get_permissions_first_mbyte)(void) {
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// return get_permission(MBYTE_BASE, MBYTE_SIZE);
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//}
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|
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/// MEMORY
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static uint8_t *video_mem = NULL; /** @brief Frame-buffer VM address. */ |
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static uint8_t *video_buf = NULL; /** @brief Primary buffer for drawing before copying to video_mem. */ |
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static mmap_t mem_map;
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static int (graph_free_memory)(void) { |
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int r = SUCCESS;
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free(video_buf); video_buf = NULL;
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r = !lm_free(&mem_map); |
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return r;
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} |
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static int (graph_map_vram)(void) { |
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int r;
|
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const unsigned vram_base = graph_get_phys_addr(); |
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const unsigned vram_size = graph_get_vram_size(); |
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if ((r = get_permission(vram_base, vram_size))) {
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if (graph_free_memory()) {
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printf("%s: lm_free failed\n", __func__);
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} |
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panic("%s: sys_privctl (ADD MEM) failed: %d\n", __func__, r);
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} |
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video_mem = vm_map_phys(SELF, (void *)vram_base, vram_size);
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if (video_mem == MAP_FAILED) {
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if (graph_free_memory()) {
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printf("%s: lm_free failed\n", __func__);
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} |
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panic("%s: couldn't map video memory.", __func__);
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} |
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video_buf = malloc(vram_size); |
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return SUCCESS;
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} |
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|
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/// INFO GET
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static int (vbe_get_mode_information)(uint16_t mode) { |
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memset(&vbe_mem_info, 0, sizeof(vbe_mode_info_t)); // reset values |
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|
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struct reg86 reg_86;
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memset(®_86, 0, sizeof(struct reg86)); // reset struct |
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vbe_mode_info_t *virtual_addr = lm_alloc(sizeof(vbe_mode_info_t), &mem_map);
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reg_86.intno = VC_BIOS_SERV; |
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reg_86.ah = VBE_CALL; |
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reg_86.al = VBE_MD_INFO; |
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reg_86.cx = mode; |
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reg_86.es = PB2BASE(mem_map.phys); |
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reg_86.di = PB2OFF(mem_map.phys); |
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// BIOS CALL
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if (sys_int86(®_86) || reg_86.ah != AH_SUCCESS) {
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printf("%s: sys_int86 failed\n", __func__);
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if (graph_free_memory()) {
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printf("%s: lm_free failed\n", __func__);
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} |
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return BIOS_CALL_ERROR;
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} |
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memcpy((void*)&vbe_mem_info, (void*)virtual_addr, mem_map.size); |
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return SUCCESS;
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} |
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/*
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static int (vbe_get_controller_information)(vg_vbe_contr_info_t *info_p) {
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memset(info_p, 0, sizeof(vg_vbe_contr_info_t)); // reset values
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mmap_t controller_map;
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struct reg86 reg_86;
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memset(®_86, 0, sizeof(struct reg86)); // reset struct
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VbeInfoBlock *virtual_addr = lm_alloc(sizeof(VbeInfoBlock), &controller_map);
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uint32_t virtual_base = (uint32_t)(virtual_addr) - controller_map.phys;
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virtual_addr->VbeSignature[0] = 'V';
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virtual_addr->VbeSignature[1] = 'B';
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virtual_addr->VbeSignature[2] = 'E';
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virtual_addr->VbeSignature[3] = '2';
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reg_86.intno = VC_BIOS_SERV;
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reg_86.ah = VBE_CALL;
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reg_86.al = VBE_CTRL_INFO;
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reg_86.es = PB2BASE(controller_map.phys);
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reg_86.di = PB2OFF(controller_map.phys);
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// BIOS CALL
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if (sys_int86(®_86) || reg_86.ah != AH_SUCCESS) {
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printf("%s: sys_int86 failed\n", __func__);
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if (!lm_free(&controller_map)) {
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printf("%s: lm_free failed\n", __func__);
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}
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return BIOS_CALL_ERROR;
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}
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info_p->VBESignature[0] = virtual_addr->VbeSignature[0];
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info_p->VBESignature[1] = virtual_addr->VbeSignature[1];
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info_p->VBESignature[2] = virtual_addr->VbeSignature[2];
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info_p->VBESignature[3] = virtual_addr->VbeSignature[3];
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uint8_t lsb, msb;
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util_get_LSB(virtual_addr->VbeVersion, &lsb);
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util_get_MSB(virtual_addr->VbeVersion, &msb);
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info_p->VBEVersion[0] = lsb;
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info_p->VBEVersion[1] = msb;
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info_p->TotalMemory = (virtual_addr->TotalMemory << 6);
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// Convert Far Far Pointer to Virtual Address
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uint32_t phys_ptr = FAR2PHYS(virtual_addr->OemStringPtr);
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uint32_t virtual_ptr = phys_ptr + virtual_base;
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info_p->OEMString = (char*)(virtual_ptr);
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phys_ptr = FAR2PHYS(virtual_addr->VideoModePtr);
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virtual_ptr = phys_ptr + virtual_base;
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info_p->VideoModeList = (uint16_t*)(virtual_ptr);
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phys_ptr = FAR2PHYS(virtual_addr->OemVendorNamePtr);
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virtual_ptr = phys_ptr + virtual_base;
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info_p->OEMVendorNamePtr = (char*)(virtual_ptr);
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phys_ptr = FAR2PHYS(virtual_addr->OemProductNamePtr);
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virtual_ptr = phys_ptr + virtual_base;
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info_p->OEMProductNamePtr = (char*)(virtual_ptr);
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phys_ptr = FAR2PHYS(virtual_addr->OemProductRevPtr);
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virtual_ptr = phys_ptr + virtual_base;
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info_p->OEMProductRevPtr = (char*)(virtual_ptr);
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if (!lm_free(&controller_map)) {
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printf("%s: lm_free failed\n", __func__);
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return LCF_ERROR;
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}
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return SUCCESS;
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}
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*/
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/// INIT
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/**
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* @brief
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* @param mode
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* @return
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*/
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static int (graph_set_mode)(uint16_t mode) { |
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struct reg86 reg_86;
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memset(®_86, 0, sizeof(struct reg86)); // reset struct |
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// Set Reg86
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reg_86.intno = VC_BIOS_SERV; |
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reg_86.ah = VBE_CALL; |
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reg_86.al = SET_VBE_MD; |
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reg_86.bx = mode | LINEAR_FRAME_BUFFER_MD; |
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// BIOS CALL
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if (sys_int86(®_86) || reg_86.ah != AH_SUCCESS) {
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printf("%s: sys_int86 failed\n", __func__);
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return BIOS_CALL_ERROR;
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} |
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return SUCCESS;
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} |
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int (graph_init)(uint16_t mode){
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if (vbe_get_mode_information(mode)) {
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printf("%s: failed to get information for mode %x.\n", __func__, mode);
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return 1; |
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} |
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graph_map_vram(); // if function fails it aborts program
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if (graph_set_mode(mode)) {
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printf("%s: failed to set graphic mode %x.\n", __func__, mode);
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return 1; |
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}; |
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return SUCCESS;
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} |
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/// CLEANUP
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int (graph_cleanup)(void){ |
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int r = SUCCESS;
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if ((r = vg_exit()))
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printf("%s: vg_exit failed to exit to text mode.\n", __func__);
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if ((r = graph_free_memory()))
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printf("%s: lm_free failed\n", __func__);
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return r;
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} |
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/// PIXEL DRAWING
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int (graph_set_pixel)(uint16_t x, uint16_t y, uint32_t color) {
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//pixels are certain to be inside can reduce lag
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/*if (x < 0 || vbe_mem_info.XResolution <= x || y < 0 || vbe_mem_info.YResolution <= y) {
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//printf("%s: invalid pixel.\n", __func__);
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return OUT_OF_RANGE;
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}*/
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unsigned int pos = (x + y * vbe_mem_info.XResolution) * 3/*graph_get_bytes_pixel()*/; |
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memcpy(video_buf + pos, &color, 3/*graph_get_bytes_pixel()*/); |
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return SUCCESS;
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} |
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void (graph_set_pixel_pos)(unsigned pos, uint32_t color){ |
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memcpy(video_buf + pos, &color, graph_get_bytes_pixel()); |
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} |
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int (graph_clear_screen)(void){ memset(video_buf, 0, graph_get_vram_size()); return SUCCESS; } |
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int (graph_draw)(void){ memcpy(video_mem, video_buf, graph_get_vram_size()); return SUCCESS; } |
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|
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///SPRITE
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#include "utils.h" |
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#include "fast_math.h" |
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#include <math.h> |
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struct basic_sprite{
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uint8_t *map; |
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uint16_t w, h; |
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int16_t u0, v0; |
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}; |
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basic_sprite_t* (basic_sprite_ctor)(const char **xpm, int16_t u0, int16_t v0){ |
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basic_sprite_t *ret = malloc(sizeof(basic_sprite_t));
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if(ret == NULL) return NULL; |
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enum xpm_image_type type = XPM_8_8_8_8;
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xpm_image_t img; |
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ret->map = xpm_load((xpm_map_t)xpm, type, &img); |
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if(ret->map == NULL){ |
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basic_sprite_dtor(ret); |
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return NULL; |
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} |
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ret->w = img.width; |
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ret->h = img.height; |
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ret->u0 = u0; |
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ret->v0 = v0; |
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return ret;
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} |
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void (basic_sprite_dtor)(basic_sprite_t *p){
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if(p == NULL) return; |
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free(p->map); |
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free(p); |
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} |
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const uint8_t* (basic_sprite_get_map)(const basic_sprite_t *p){ return p->map; } |
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uint16_t (basic_sprite_get_w) (const basic_sprite_t *p){ return p->w ; } |
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uint16_t (basic_sprite_get_h) (const basic_sprite_t *p){ return p->h ; } |
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int16_t (basic_sprite_get_u0) (const basic_sprite_t *p){ return p->u0 ; } |
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int16_t (basic_sprite_get_v0) (const basic_sprite_t *p){ return p->v0 ; } |
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|
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/*
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struct basic_sprite_alpha{
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uint8_t *map;
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uint16_t w, h;
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int16_t u0, v0;
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};
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basic_sprite_alpha_t* (basic_sprite_alpha_ctor)(const char **xpm, int16_t u0, int16_t v0){
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basic_sprite_alpha_t *ret = malloc(sizeof(basic_sprite_t));
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if(ret == NULL) return NULL;
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enum xpm_image_type type = XPM_8_8_8_8;
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xpm_image_t img;
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ret->map = NULL;
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uint8_t *m = xpm_load((xpm_map_t)xpm, type, &img);
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if(m == NULL){
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basic_sprite_alpha_dtor(ret);
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return NULL;
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}
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ret->map = m;
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if(ret->map == NULL){
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basic_sprite_alpha_dtor(ret);
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return NULL;
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}
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ret->w = img.width;
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ret->h = img.height;
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ret->u0 = u0;
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ret->v0 = v0;
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return ret;
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}
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void (basic_sprite_alpha_dtor)(basic_sprite_alpha_t *p){
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if(p == NULL) return;
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free(p->map);
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free(p);
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}
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const uint8_t* (basic_sprite_alpha_get_map)(const basic_sprite_alpha_t *p){ return p->map; }
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uint16_t (basic_sprite_alpha_get_w) (const basic_sprite_alpha_t *p){ return p->w ; }
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uint16_t (basic_sprite_alpha_get_h) (const basic_sprite_alpha_t *p){ return p->h ; }
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int16_t (basic_sprite_alpha_get_u0) (const basic_sprite_alpha_t *p){ return p->u0 ; }
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int16_t (basic_sprite_alpha_get_v0) (const basic_sprite_alpha_t *p){ return p->v0 ; }
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*/
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|
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struct sprite{
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const basic_sprite_t *bsp;
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int16_t x, y; //position in screen
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int16_t su0, sv0; |
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float theta, s, c;
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float scale;
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uint8_t *sbuf; |
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}; |
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sprite_t* (sprite_ctor)(const basic_sprite_t *bsp){
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sprite_t *ret = malloc(sizeof(sprite_t));
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if(ret == NULL) return NULL; |
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ret->bsp = bsp; |
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ret->sbuf = NULL;
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ret->x = 0;
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ret->y = 0;
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sprite_set_angle(ret, 0.0); |
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sprite_set_scale(ret, 1.0); |
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return ret;
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} |
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void (sprite_dtor)(sprite_t *p){
|
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if(p == NULL) return; |
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free(p->sbuf); |
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free(p); |
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} |
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void (sprite_set_pos) (sprite_t *p, int16_t x , int16_t y ){ p->x = x; p->y = y; }
|
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void (sprite_set_angle) (sprite_t *p, double angle ){ p->theta = angle; p->c = fm_cos(p->theta); p->s = fm_sin(p->theta); } |
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void (sprite_set_scale) (sprite_t *p, double scale ){ |
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if(p->scale == scale) return; |
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p->scale = scale; |
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|
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p->su0 = p->bsp->u0*p->scale; |
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p->sv0 = p->bsp->u0*p->scale; |
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|
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const uint16_t W = basic_sprite_get_w(p->bsp),
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H = basic_sprite_get_h(p->bsp); |
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uint16_t sW = W*scale, sH = H*scale; |
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p->sbuf = realloc(p->sbuf, sW*sH*4);
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const uint8_t *map = basic_sprite_get_map(p->bsp);
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for(uint16_t sx = 0; sx < sW; ++sx){ |
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for(uint16_t sy = 0; sy < sH; ++sy){ |
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uint16_t x = sx/scale, y = sy/scale; |
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if(x > W || y > H) continue; |
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memcpy(p->sbuf+4*(sx+sy*sW), map+4*(x+y*W), 4); |
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} |
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} |
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} |
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int16_t (sprite_get_x)(const sprite_t *p){ return p->x; } |
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int16_t (sprite_get_y)(const sprite_t *p){ return p->y; } |
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double (sprite_get_angle)(const sprite_t *p){ return p->theta; } |
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uint16_t (sprite_get_w)(const sprite_t *p){ return basic_sprite_get_w(p->bsp); } |
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uint16_t (sprite_get_h)(const sprite_t *p){ return basic_sprite_get_h(p->bsp); } |
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void (sprite_src2sbuf)(const sprite_t *p, int16_t x, int16_t y, int16_t *u, int16_t *v){ |
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if(p->theta == 0.0){ |
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*u = x - p->x + p->su0; |
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*v = y - p->y + p->sv0; |
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}else{
|
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float dx = x - p->x;
|
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float dy = y - p->y;
|
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int16_t du = dx*p->c - dy*p->s - 0.5f; |
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int16_t dv = dx*p->s + dy*p->c - 0.5f; |
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*u = du + p->su0; |
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*v = dv + p->sv0; |
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} |
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} |
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void (sprite_sbuf2src)(const sprite_t *p, int16_t u, int16_t v, int16_t *x, int16_t *y){ |
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int16_t du = u - p->su0; |
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int16_t dv = v - p->sv0; |
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double dx = du*p->c + dv*p->s;
|
425 |
double dy = -du*p->s + dv*p->c;
|
426 |
*x = dx + 0.5 + p->x; |
427 |
*y = dy + 0.5 + p->y; |
428 |
} |
429 |
|
430 |
void (sprite_draw)(const sprite_t *p){ |
431 |
const uint16_t sw = p->scale*basic_sprite_get_w(p->bsp);
|
432 |
const uint16_t sh = p->scale*basic_sprite_get_h(p->bsp);
|
433 |
int16_t xmin, xmax, ymin, ymax; { |
434 |
int16_t x, y; |
435 |
sprite_sbuf2src(p, 0 , 0 , &x, &y); |
436 |
xmin = x; xmax = x; ymin = y; ymax = y; |
437 |
sprite_sbuf2src(p, sw, 0 , &x, &y);
|
438 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
439 |
sprite_sbuf2src(p, 0 , sh, &x, &y);
|
440 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
441 |
sprite_sbuf2src(p, sw, sh, &x, &y); |
442 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
443 |
xmin = max(xmin-2, 0); xmax = min(xmax+2, graph_get_XRes()); |
444 |
ymin = max(ymin-2, 0); ymax = min(ymax+2, graph_get_YRes()); |
445 |
} |
446 |
const uint16_t bytes_pixel = 3/*graph_get_bytes_pixel()*/; |
447 |
for(int16_t u, v, y = ymin; y < ymax; ++y){
|
448 |
uint8_t *place = video_buf + (xmin + y*graph_get_XRes())*bytes_pixel; |
449 |
for(int16_t x = xmin; x < xmax; ++x, place += bytes_pixel){
|
450 |
sprite_src2sbuf(p, x, y, &u, &v); |
451 |
//u = x; v = y;
|
452 |
if(0 <= u && u < sw && 0 <= v && v < sh){ |
453 |
const uint8_t *c_p = p->sbuf+(v*sw+u)*4; |
454 |
if(*(c_p+3) < ALPHA_THRESHOLD){ //alpha |
455 |
memcpy(place, c_p, bytes_pixel); |
456 |
} |
457 |
} |
458 |
} |
459 |
} |
460 |
} |