mirror of
https://github.com/open-goal/jak-project
synced 2026-08-07 10:16:45 -04:00
water111
d5951c2b11
Normally, when they allocate a VagCmd, they do a bunch of stuff to clear all the status bits and reset things in particular the InitVAGCmd function does a lot  but for the stereo command, they do a lot less:  Which means that the new_stereo_command can just have random status bits left over from whatever the last user had. we seem to end up in a state where byte21 is set, and this causes everything else to be wrong and off-by-one dma transfer. My guess is that the original game avoided this bug due to lucky timing that I don't understand. I think the fix of just clearing byte21 is ok because there's no way that the old value of the byte is useful after the command is repurposed.
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
#include "BlitDisplays.h"
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#include "common/log/log.h"
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#include "game/graphics/opengl_renderer/OpenGLRenderer.h"
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#include "game/graphics/pipelines/opengl.h"
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BlitDisplays::BlitDisplays(const std::string& name, int my_id) : BucketRenderer(name, my_id) {}
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void BlitDisplays::init_textures(TexturePool& texture_pool, GameVersion version) {
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// set up target texture
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u32 tbp = 0;
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switch (version) {
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case GameVersion::Jak2:
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tbp = 0x3300;
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break;
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default:
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ASSERT_NOT_REACHED();
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}
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TextureInput in;
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glGenTextures(1, &in.gpu_texture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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in.w = 32;
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in.h = 32;
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in.debug_page_name = "PC-BLIT";
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in.debug_name = fmt::format("blit-display");
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in.id = texture_pool.allocate_pc_port_texture(version);
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m_gpu_tex = texture_pool.give_texture_and_load_to_vram(in, tbp);
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m_tbp = tbp;
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}
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void BlitDisplays::render(DmaFollower& dma,
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SharedRenderState* render_state,
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ScopedProfilerNode& /*prof*/) {
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auto back = render_state->back_fbo;
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bool valid = back && back->valid;
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// loop through all data
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while (dma.current_tag_offset() != render_state->next_bucket) {
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auto data = dma.read_and_advance();
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if (data.vifcode0().kind == VifCode::Kind::PC_PORT) {
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switch (data.vifcode0().immediate) {
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case 0x10: { // copy buffer->texture (tbp in vif1)
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u32 tbp = data.vifcode1().immediate;
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ASSERT_MSG(tbp == m_tbp, fmt::format("unexpected tbp {}", tbp));
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if (valid) {
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// copy buffer texture -> custom texture
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auto my_tex_id = m_gpu_tex->gpu_textures.at(0).gl;
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int w = back->width, h = back->height;
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glBindTexture(GL_TEXTURE_2D, my_tex_id);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, back->fbo_id);
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glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 0, 0, w, h, 0);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
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m_gpu_tex->w = w;
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m_gpu_tex->h = h;
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render_state->texture_pool->move_existing_to_vram(m_gpu_tex, m_tbp);
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} else {
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lg::error("no valid back buffer to blit!");
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}
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} break;
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}
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}
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}
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}
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void BlitDisplays::draw_debug_window() {}
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