example: add fog
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608273ef44
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33bac06002
@ -963,3 +963,16 @@ BEAR_OBJ = \
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example/bear.elf: LDSCRIPT = $(LIB)/main.lds
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example/bear.elf: $(START_OBJ) $(BEAR_OBJ)
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FOG_OBJ = \
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example/fog.o \
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holly/core.o \
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holly/region_array.o \
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holly/background.o \
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holly/ta_fifo_polygon_converter.o \
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holly/video_output.o \
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sh7091/serial.o \
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$(LIBGCC)
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example/fog.elf: LDSCRIPT = $(LIB)/main.lds
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example/fog.elf: $(START_OBJ) $(FOG_OBJ)
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426
example/fog.cpp
Normal file
426
example/fog.cpp
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@ -0,0 +1,426 @@
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#include <stdint.h>
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#include "holly/background.hpp"
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#include "holly/core.hpp"
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#include "holly/core_bits.hpp"
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#include "holly/holly.hpp"
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#include "holly/isp_tsp.hpp"
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#include "holly/region_array.hpp"
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#include "holly/ta_bits.hpp"
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#include "holly/ta_fifo_polygon_converter.hpp"
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#include "holly/ta_global_parameter.hpp"
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#include "holly/ta_parameter.hpp"
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#include "holly/ta_vertex_parameter.hpp"
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#include "holly/texture_memory_alloc3.hpp"
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#include "holly/video_output.hpp"
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#include "sh7091/sh7091.hpp"
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#include "sh7091/sh7091_bits.hpp"
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#include "sh7091/serial.hpp"
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#include "sh7091/vbr.hpp"
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#include "systembus.hpp"
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#include "systembus_bits.hpp"
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#include "memorymap.hpp"
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#include "math/vec2.hpp"
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#include "math/vec3.hpp"
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#include "math/vec4.hpp"
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#include "math/mat4x4.hpp"
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using vec2 = vec<2, float>;
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using vec3 = vec<3, float>;
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using vec4 = vec<4, float>;
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using mat4x4 = mat<4, 4, float>;
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void vbr100()
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{
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serial::string("vbr100\n");
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serial::string("expevt ");
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serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
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serial::string("intevt ");
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serial::integer<uint16_t>(sh7091.CCN.INTEVT);
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serial::string("tra ");
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serial::integer<uint16_t>(sh7091.CCN.TRA);
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uint32_t spc;
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uint32_t ssr;
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asm volatile ("stc spc,%0" : "=r" (spc));
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asm volatile ("stc ssr,%0" : "=r" (ssr));
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serial::string("spc ");
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serial::integer(spc);
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serial::string("ssr ");
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serial::integer(ssr);
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while (1);
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}
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void vbr400()
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{
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serial::string("vbr400\n");
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serial::string("expevt ");
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serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
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serial::string("intevt ");
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serial::integer<uint16_t>(sh7091.CCN.INTEVT);
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serial::string("tra ");
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serial::integer<uint16_t>(sh7091.CCN.TRA);
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uint32_t spc;
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uint32_t ssr;
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asm volatile ("stc spc,%0" : "=r" (spc));
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asm volatile ("stc ssr,%0" : "=r" (ssr));
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serial::string("spc ");
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serial::integer(spc);
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serial::string("ssr ");
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serial::integer(ssr);
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while (1);
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}
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static int render_done = 0;
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void vbr600()
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{
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if (sh7091.CCN.EXPEVT == 0 && sh7091.CCN.INTEVT == 0x320) {
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uint32_t istnrm = system.ISTNRM;
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uint32_t isterr = system.ISTERR;
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if (isterr) {
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serial::string("isterr: ");
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serial::integer<uint32_t>(system.ISTERR);
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}
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if (istnrm & istnrm::end_of_render_tsp) {
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system.ISTNRM = istnrm::end_of_render_tsp
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| istnrm::end_of_render_isp
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| istnrm::end_of_render_video;
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render_done = 1;
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return;
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}
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}
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serial::string("vbr600\n");
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serial::string("expevt ");
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serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
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serial::string("intevt ");
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serial::integer<uint16_t>(sh7091.CCN.INTEVT);
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serial::string("tra ");
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serial::integer<uint16_t>(sh7091.CCN.TRA);
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serial::string("istnrm: ");
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serial::integer<uint32_t>(system.ISTNRM);
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serial::string("isterr: ");
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serial::integer<uint32_t>(system.ISTERR);
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uint32_t spc;
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uint32_t ssr;
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asm volatile ("stc spc,%0" : "=r" (spc));
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asm volatile ("stc ssr,%0" : "=r" (ssr));
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serial::string("spc ");
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serial::integer(spc);
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serial::string("ssr ");
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serial::integer(ssr);
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while (1);
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}
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void interrupt_init()
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{
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system.IML2NRM = 0;
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system.IML2ERR = 0;
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system.IML2EXT = 0;
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system.IML4NRM = 0;
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system.IML4ERR = 0;
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system.IML4EXT = 0;
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system.IML6NRM = 0;
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system.IML6ERR = 0;
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system.IML6EXT = 0;
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system.ISTERR = 0xffffffff;
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system.ISTNRM = 0xffffffff;
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sh7091.CCN.INTEVT = 0;
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sh7091.CCN.EXPEVT = 0;
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uint32_t vbr = reinterpret_cast<uint32_t>(&__vbr_link_start) - 0x100;
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serial::string("vbr ");
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serial::integer<uint32_t>(vbr);
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serial::string("vbr100 ");
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serial::integer<uint32_t>(reinterpret_cast<uint32_t>(&vbr100));
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asm volatile ("ldc %0,vbr"
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:
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: "r" (vbr));
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uint32_t sr;
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asm volatile ("stc sr,%0"
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: "=r" (sr));
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serial::string("sr ");
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serial::integer<uint32_t>(sr);
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sr &= ~sh::sr::bl; // BL
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sr &= ~sh::sr::imask(15); // imask
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serial::string("sr ");
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serial::integer<uint32_t>(sr);
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asm volatile ("ldc %0,sr"
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:
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: "r" (sr));
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}
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vec3 square[] = {
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{0 + 50, 0 + 50, 0.00392156862745098},
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{640 - 50, 0 + 50, 0.9725490196078431},
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{640 - 50, 480 - 50, 0.9725490196078431},
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{0 + 50, 480 - 50, 0.00392156862745098},
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};
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vec2 texcoord[] = {
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{0, 0},
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{1, 0},
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{1, 1},
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{0, 1},
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};
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uint32_t offset[] = {
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0,
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0xffUL << 24,
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0xffUL << 24,
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0
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};
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void global_polygon_type_0(ta_parameter_writer& writer,
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uint32_t list,
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uint32_t cull)
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{
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const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
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| list
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| obj_control::col_type::packed_color
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| obj_control::gouraud
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| obj_control::offset
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| obj_control::texture
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;
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const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
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| cull;
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const uint32_t tsp_instruction_word = 0
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//| tsp_instruction_word::fog_control::per_vertex
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| tsp_instruction_word::fog_control::look_up_table
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| tsp_instruction_word::src_alpha_instr::one
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| tsp_instruction_word::dst_alpha_instr::zero
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| tsp_instruction_word::texture_shading_instruction::modulate
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| tsp_instruction_word::texture_u_size::from_int(8)
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| tsp_instruction_word::texture_v_size::from_int(8)
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;
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const uint32_t texture_address = texture_memory_alloc.texture.start;
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const uint32_t texture_control_word = texture_control_word::pixel_format::_565
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| texture_control_word::scan_order::twiddled
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| texture_control_word::texture_address(texture_address / 8);
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writer.append<ta_global_parameter::polygon_type_0>() =
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ta_global_parameter::polygon_type_0(parameter_control_word,
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isp_tsp_instruction_word,
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tsp_instruction_word,
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texture_control_word,
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0, // data size for sort dma
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0 // next address for sort dma
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);
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}
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static inline void render_quad_type_3(ta_parameter_writer& writer,
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vec3 ap,
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vec3 bp,
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vec3 cp,
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vec3 dp,
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vec2 at,
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vec2 bt,
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vec2 ct,
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vec2 dt,
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uint32_t base_color,
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uint32_t aoc,
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uint32_t boc,
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uint32_t coc,
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uint32_t doc)
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{
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writer.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
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ap.x, ap.y, ap.z,
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at.x, at.y,
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base_color,
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aoc);
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writer.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
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bp.x, bp.y, bp.z,
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bt.x, bt.y,
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base_color,
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boc);
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writer.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(false),
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dp.x, dp.y, dp.z,
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dt.x, dt.y,
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base_color,
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doc);
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writer.append<ta_vertex_parameter::polygon_type_3>() =
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ta_vertex_parameter::polygon_type_3(polygon_vertex_parameter_control_word(true),
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cp.x, cp.y, cp.z,
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ct.x, ct.y,
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base_color,
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coc);
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}
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void transfer_scene(ta_parameter_writer& writer)
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{
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global_polygon_type_0(writer,
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para_control::list_type::opaque,
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isp_tsp_instruction_word::culling_mode::no_culling);
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render_quad_type_3(writer,
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square[0],
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square[1],
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square[2],
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square[3],
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texcoord[0],
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texcoord[1],
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texcoord[2],
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texcoord[3],
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0xff00ff00,
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offset[0],
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offset[1],
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offset[2],
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offset[3]);
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writer.append<ta_global_parameter::end_of_list>() =
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ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
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}
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void fog_init()
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{
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// for look-up table mode
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// 2 ** 0 * 128 = 1.0
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/*
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holly.FOG_DENSITY = 0
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| fog_density::fog_scale_mantissa(128)
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| fog_density::fog_scale_exponent(0)
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;
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*/
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holly.FOG_DENSITY = 0
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| fog_density::fog_scale_mantissa(255)
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| fog_density::fog_scale_exponent(7)
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;
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holly.FOG_CLAMP_MIN = 0x0;
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holly.FOG_CLAMP_MAX = 0xffffffff;
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holly.FOG_COL_RAM = 0xff0000; // for look-up table mode
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holly.FOG_COL_VERT = 0xff0000; // red
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for (int i = 0; i < 128; i++) {
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holly.FOG_TABLE[i] = ((i * 2) << 8) | ((i + 1) * 2);
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}
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}
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void texture_init()
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{
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volatile uint32_t * base = &texture_memory64[texture_memory_alloc.texture.start / 4];
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for (int i = 0; i < 8 * 8 / 2; i++) {
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base[i] = 0xffffffff;
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}
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}
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uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
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void main()
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{
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serial::init(0);
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interrupt_init();
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constexpr uint32_t ta_alloc = 0
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| ta_alloc_ctrl::pt_opb::no_list
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| ta_alloc_ctrl::tm_opb::no_list
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| ta_alloc_ctrl::t_opb::no_list
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| ta_alloc_ctrl::om_opb::no_list
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| ta_alloc_ctrl::o_opb::_16x4byte;
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constexpr int render_passes = 1;
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constexpr struct opb_size opb_size[render_passes] = {
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{
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.opaque = 16 * 4,
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.opaque_modifier = 0,
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.translucent = 0,
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.translucent_modifier = 0,
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.punch_through = 0
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}
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};
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holly.SOFTRESET = softreset::pipeline_soft_reset
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| softreset::ta_soft_reset;
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holly.SOFTRESET = 0;
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core_init();
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fog_init();
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texture_init();
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system.IML6NRM = istnrm::end_of_render_tsp;
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const int framebuffer_width = 640;
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const int framebuffer_height = 480;
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const int tile_width = framebuffer_width / 32;
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const int tile_height = framebuffer_height / 32;
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for (int i = 0; i < 2; i++) {
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region_array_multipass(tile_width,
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tile_height,
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opb_size,
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render_passes,
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texture_memory_alloc.region_array[i].start,
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texture_memory_alloc.object_list[i].start);
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background_parameter2(texture_memory_alloc.background[i].start,
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0xff202040);
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}
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int ta = 0;
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int core = 0;
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ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf);
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video_output::set_mode_vga();
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while (1) {
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ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters[ta].start,
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texture_memory_alloc.isp_tsp_parameters[ta].end,
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texture_memory_alloc.object_list[ta].start,
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texture_memory_alloc.object_list[ta].end,
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opb_size[0].total(),
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ta_alloc,
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tile_width,
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tile_height);
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writer.offset = 0;
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transfer_scene(writer);
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ta_polygon_converter_writeback(writer.buf, writer.offset);
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ta_polygon_converter_transfer(writer.buf, writer.offset);
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ta_wait_opaque_list();
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render_done = 0;
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core_start_render2(texture_memory_alloc.region_array[core].start,
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texture_memory_alloc.isp_tsp_parameters[core].start,
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texture_memory_alloc.background[core].start,
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texture_memory_alloc.framebuffer[core].start,
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framebuffer_width);
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while (render_done == 0) {
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asm volatile ("nop");
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};
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while (!spg_status::vsync(holly.SPG_STATUS));
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holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[ta].start;
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while (spg_status::vsync(holly.SPG_STATUS));
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}
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}
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