From 74fe5b17509e88a7f81766fb6591521c54b62f4a Mon Sep 17 00:00:00 2001 From: "Lucas S. Vieira" Date: Wed, 10 Jul 2024 22:17:04 -0300 Subject: [PATCH] Initial commit --- .dir-locals.el | 6 + .gitignore | 5 + CMakeLists.txt | 21 +++ CMakePresets.json | 26 ++++ LICENSE.txt | 373 ++++++++++++++++++++++++++++++++++++++++++++++ README.org | 16 ++ generate.sh | 4 + include/render.h | 46 ++++++ iso.xml | 20 +++ src/main.c | 136 +++++++++++++++++ src/render.c | 110 ++++++++++++++ system.cnf | 4 + 12 files changed, 767 insertions(+) create mode 100644 .dir-locals.el create mode 100644 .gitignore create mode 100644 CMakeLists.txt create mode 100644 CMakePresets.json create mode 100644 LICENSE.txt create mode 100644 README.org create mode 100755 generate.sh create mode 100644 include/render.h create mode 100644 iso.xml create mode 100644 src/main.c create mode 100644 src/render.c create mode 100644 system.cnf diff --git a/.dir-locals.el b/.dir-locals.el new file mode 100644 index 0000000..5d2e0d7 --- /dev/null +++ b/.dir-locals.el @@ -0,0 +1,6 @@ +((nil + (eval . (let ((root (projectile-project-root))) + (let ((includes (list "/opt/psn00bsdk/include/libpsn00b" + (concat root "include")))) + (setq-local flycheck-clang-include-path includes) + (setq-local flycheck-gcc-include-path includes)))))) diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e07fbdd --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +LCNSFILE/ +build/ +*~ +*#*# + diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..0959ba3 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,21 @@ +cmake_minimum_required(VERSION 3.21) + +project(SonicEngine + LANGUAGES C CXX ASM + VERSION 1.0.0 + DESCRIPTION "Sonic Engine for PSX" + HOMEPAGE_URL "https://luksamuk.codes") + +file(GLOB ENGINE_SRC ${CMAKE_CURRENT_LIST_DIR}/src/*.c) + +psn00bsdk_add_executable(sonic + GPREL + ${ENGINE_SRC}) + +target_include_directories(sonic PUBLIC + $) + +psn00bsdk_add_cd_image(iso sonicengine + iso.xml + DEPENDS sonic system.cnf) + diff --git a/CMakePresets.json b/CMakePresets.json new file mode 100644 index 0000000..97d8428 --- /dev/null +++ b/CMakePresets.json @@ -0,0 +1,26 @@ +{ + "version": 3, + "cmakeMinimumRequired": { + "major": 3, + "minor": 21, + "patch": 0 + }, + "configurePresets": [ + { + "name": "default", + "displayName": "Default configuration", + "description": "Use this preset to build the project using PSn00bSDK.", + "generator": "Ninja", + "toolchainFile": "$env{PSN00BSDK_LIBS}/cmake/sdk.cmake", + "binaryDir": "${sourceDir}/build", + "cacheVariables": { + "CMAKE_BUILD_TYPE": "Debug", + "PSN00BSDK_TC": "", + "PSN00BSDK_TARGET": "mipsel-none-elf" + }, + "warnings": { + "dev": false + } + } + ] +} diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..d0a1fa1 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at https://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/README.org b/README.org new file mode 100644 index 0000000..0f0281b --- /dev/null +++ b/README.org @@ -0,0 +1,16 @@ +#+title: engine-psx + +* engine-psx + +Open source platformer engine built for the PSX. + +Uses [[https://github.com/Lameguy64/PSn00bSDK/tree/master][PSn00bSDK]]. + +* About + +To-do. + +* License + +Licensed under the Mozilla Public License 2.0 + diff --git a/generate.sh b/generate.sh new file mode 100755 index 0000000..510b7f5 --- /dev/null +++ b/generate.sh @@ -0,0 +1,4 @@ +#!/bin/bash +cmake --preset default . +cmake --build ./build + diff --git a/include/render.h b/include/render.h new file mode 100644 index 0000000..8c955d9 --- /dev/null +++ b/include/render.h @@ -0,0 +1,46 @@ +#ifndef RENDER_H +#define RENDER_H + +#include + +#define SCREEN_XRES 320 +#define SCREEN_YRES 240 +#define SCREEN_Z 320 +#define CENTERX (SCREEN_XRES >> 1) +#define CENTERY (SCREEN_YRES >> 1) + +// Length of the ordering table, i.e. the range Z coordinates can have, 0-15 in +// this case. Larger values will allow for more granularity with depth (useful +// when drawing a complex 3D scene) at the expense of RAM usage and performance. +#define OT_LENGTH 2048 + +// Size of the buffer GPU commands and primitives are written to. If the program +// crashes due to too many primitives being drawn, increase this value. +#define BUFFER_LENGTH 8192 + +/* Framebuffer/display list class */ + +typedef struct { + DISPENV disp_env; + DRAWENV draw_env; + uint32_t ot[OT_LENGTH]; + uint8_t buffer[BUFFER_LENGTH]; +} RenderBuffer; + +typedef struct { + RenderBuffer buffers[2]; + uint8_t *next_packet; + int active_buffer; +} RenderContext; + +void setup_context(); +void set_clear_color(uint8_t r, uint8_t g, uint8_t b); +void swap_buffers(); +void *get_next_prim(); +uint32_t *get_ot_at(uint32_t otz); +void increment_prim(size_t size); +void sort_prim(void *prim, uint32_t otz); + +void draw_text(int x, int y, int z, const char *text); + +#endif diff --git a/iso.xml b/iso.xml new file mode 100644 index 0000000..a877a9e --- /dev/null +++ b/iso.xml @@ -0,0 +1,20 @@ + + + + + + + + + + + + + diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..7bca42b --- /dev/null +++ b/src/main.c @@ -0,0 +1,136 @@ +#include +#include +#include +#include +#include + +#include "render.h" +#include + +static int x = 32, y = 32; +static int dx = 1, dy = 1; + +static SVECTOR vertices[] = { + { -64, -64, -64, 0 }, + { 64, -64, -64, 0 }, + { 64, -64, 64, 0 }, + { -64, -64, 64, 0 }, + { -64, 64, -64, 0 }, + { 64, 64, -64, 0 }, + { 64, 64, 64, 0 }, + { -64, 64, 64, 0 } +}; + +static short faces[] = { + 2, 1, 3, 0, // top + 1, 5, 0, 4, // front + 5, 6, 4, 7, // bottomn + 2, 6, 1, 5, // right + 7, 6, 3, 2, // back + 7, 3, 4, 0 // left +}; + +static SVECTOR rotation = { 0 }; +static VECTOR vel = { 0 }; +static VECTOR acc = { 0 }; +static VECTOR pos = { 0, 0, 450 }; +static VECTOR scale = { ONE, ONE, ONE }; +static MATRIX world = { 0 }; + +void +engine_init() +{ + setup_context(); + set_clear_color(63, 0, 127); +} + +void +engine_update() +{ + if(x < 32 || x > (SCREEN_XRES - 32)) dx = -dx; + if(y < 32 || y > (SCREEN_YRES - 32)) dy = -dy; + + x += dx; + y += dy; + + rotation.vx += 6; + rotation.vy -= 8; + rotation.vz -= 12; +} + +void +engine_draw() +{ + // Gouraud-shaded triangle + POLY_G4 *poly = (POLY_G4 *) get_next_prim(); + setPolyG4(poly); + setXY4(poly, + x - 32, y - 32, + x + 32, y - 32, + x - 32, y + 32, + x + 32, y + 32); + setRGB0(poly, 255, 0, 0); + setRGB1(poly, 0, 255, 0); + setRGB2(poly, 0, 0, 255); + setRGB3(poly, 255, 255, 0); + sort_prim(poly, 1); + increment_prim(sizeof(POLY_G4)); + + // Gouraud-shaded cube + RotMatrix(&rotation, &world); + TransMatrix(&world, &pos); + ScaleMatrix(&world, &scale); + gte_SetRotMatrix(&world); + gte_SetTransMatrix(&world); + + for(int i = 0; i < 24; i += 4) { + int nclip, otz; + POLY_G4 *poly = (POLY_G4 *) get_next_prim(); + setPolyG4(poly); + setRGB0(poly, 128, 0, 0); + setRGB1(poly, 0, 128, 0); + setRGB2(poly, 0, 0, 128); + setRGB3(poly, 128, 128, 0); + + gte_ldv0(&vertices[faces[i]]); + gte_ldv1(&vertices[faces[i + 1]]); + gte_ldv2(&vertices[faces[i + 2]]); + gte_rtpt(); + gte_nclip(); + gte_stopz(&nclip); + if(nclip <= 0) continue; + + gte_stsxy0(&poly->x0); + gte_ldv0(&vertices[faces[i + 3]]); + gte_rtps(); + gte_stsxy3(&poly->x1, &poly->x2, &poly->x3); + gte_avsz4(); + gte_stotz(&otz); + + if((otz > 0) && (otz < OT_LENGTH)) { + sort_prim(poly, otz); + increment_prim(sizeof(POLY_G4)); + } + } + + // Draw some text in front of the square (Z = 0, primitives with higher + // Z indices are drawn first). + draw_text(8, 8, 0, + "Hello world!\n" + "Running on PSX.\n" + "Built using PSn00bSDK."); +} + +int +main(void) +{ + engine_init(); + + while(1) { + engine_update(); + engine_draw(); + swap_buffers(); + } + + return 0; +} diff --git a/src/render.c b/src/render.c new file mode 100644 index 0000000..609bf2e --- /dev/null +++ b/src/render.c @@ -0,0 +1,110 @@ +#include "render.h" +#include +#include +#include + +static RenderContext ctx; + +void +setup_context() +{ + // Initialize the GPU and load the default font texture provided by + // PSn00bSDK at (960, 0) in VRAM. + ResetGraph(0); + FntLoad(960, 0); + + // Place the two framebuffers vertically in VRAM. + SetDefDrawEnv(&ctx.buffers[0].draw_env, 0, 0, SCREEN_XRES, SCREEN_YRES); + SetDefDispEnv(&ctx.buffers[0].disp_env, 0, 0, SCREEN_XRES, SCREEN_YRES); + SetDefDrawEnv(&ctx.buffers[1].draw_env, 0, SCREEN_YRES, SCREEN_XRES, SCREEN_YRES); + SetDefDispEnv(&ctx.buffers[1].disp_env, 0, SCREEN_YRES, SCREEN_XRES, SCREEN_YRES); + + // Set the default background color and enable auto-clearing. + set_clear_color(0, 0, 0); + ctx.buffers[0].draw_env.isbg = 1; + ctx.buffers[1].draw_env.isbg = 1; + + // Initialize the first buffer and clear its OT so that it can be used for + // drawing. + ctx.active_buffer = 0; + ctx.next_packet = ctx.buffers[0].buffer; + ClearOTagR(ctx.buffers[0].ot, OT_LENGTH); + + // Initialize and setup the GTE geometry offsets + InitGeom(); + gte_SetGeomOffset(CENTERX, CENTERY); + gte_SetGeomScreen(SCREEN_Z); + + // Turn on the video output. + SetDispMask(1); +} + +void +set_clear_color(uint8_t r, uint8_t g, uint8_t b) +{ + setRGB0(&(ctx.buffers[0].draw_env), r, g, b); + setRGB0(&(ctx.buffers[1].draw_env), r, g, b); +} + +void +swap_buffers() +{ + // Wait for the GPU to finish drawing, then wait for vblank in order to + // prevent screen tearing. + DrawSync(0); + VSync(0); + + RenderBuffer *draw_buffer = &ctx.buffers[ctx.active_buffer]; + RenderBuffer *disp_buffer = &ctx.buffers[ctx.active_buffer ^ 1]; + + // Display the framebuffer the GPU has just finished drawing and start + // rendering the display list that was filled up in the main loop. + PutDispEnv(&disp_buffer->disp_env); + DrawOTagEnv(&draw_buffer->ot[OT_LENGTH - 1], &draw_buffer->draw_env); + + // Switch over to the next buffer, clear it and reset the packet allocation + // pointer. + ctx.active_buffer ^= 1; + ctx.next_packet = disp_buffer->buffer; + ClearOTagR(disp_buffer->ot, OT_LENGTH); +} + +void * +get_next_prim() +{ + return (void *) ctx.next_packet; +} + +void +increment_prim(size_t size) +{ + ctx.next_packet += size; +} + +void +sort_prim(void *prim, uint32_t otz) +{ + // Place the primitive after all previously allocated primitives, then + // insert it into the OT and bump the allocation pointer. + addPrim(get_ot_at(otz), (uint8_t *) prim); + + // Make sure we haven't yet run out of space for future primitives. + assert(ctx.next_packet <= &ctx.buffers[ctx.active_buffer].buffer[BUFFER_LENGTH]); +} + +// A simple helper for drawing text using PSn00bSDK's debug font API. Note that +// FntSort() requires the debug font texture to be uploaded to VRAM beforehand +// by calling FntLoad(). +void +draw_text(int x, int y, int z, const char *text) +{ + ctx.next_packet = FntSort(get_ot_at(z), get_next_prim(), x, y, text); + assert(ctx.next_packet <= &ctx.buffers[ctx.active_buffer].buffer[BUFFER_LENGTH]); +} + +uint32_t * +get_ot_at(uint32_t otz) +{ + RenderBuffer *buffer = &ctx.buffers[ctx.active_buffer]; + return &buffer->ot[otz]; +} diff --git a/system.cnf b/system.cnf new file mode 100644 index 0000000..59216b1 --- /dev/null +++ b/system.cnf @@ -0,0 +1,4 @@ +BOOT=cdrom:\SONIC.EXE;1 +TCB=4 +EVENT=10 +STACK=801FFFF0