From ac97380328f4541dbe223b543088ff6067349245 Mon Sep 17 00:00:00 2001
From: Zack Buhman <zack@buhman.org>
Date: Tue, 28 Jan 2025 02:05:14 -0600
Subject: [PATCH] wip

---
 example/wiffle_screen_space_store_queue2.cpp | 72 ++++++++++++++++++--
 1 file changed, 68 insertions(+), 4 deletions(-)

diff --git a/example/wiffle_screen_space_store_queue2.cpp b/example/wiffle_screen_space_store_queue2.cpp
index a6e5142..35a2a63 100644
--- a/example/wiffle_screen_space_store_queue2.cpp
+++ b/example/wiffle_screen_space_store_queue2.cpp
@@ -143,6 +143,68 @@ void transfer_scene(float theta)
   sq_transfer_32byte(ta_fifo_polygon_converter);
 }
 
+struct vertex {
+  float x;
+  float y;
+  float z;
+};
+
+// screen space coordinates
+const struct vertex quad_vertices[] = {
+  { 0.f,   0.f,   0.1f },
+  { 640.f, 0.f,   0.1f },
+  { 640.f, 480.f, 0.1f },
+  { 640.f, 480.f, 0.1f },
+};
+
+void transfer_quad()
+{
+  const uint32_t parameter_control_word = para_control::para_type::sprite
+                                        | para_control::list_type::opaque
+                                        | obj_control::col_type::packed_color;
+    //| obj_control::gouraud;
+
+  const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
+                                          | isp_tsp_instruction_word::culling_mode::no_culling;
+
+  const uint32_t tsp_instruction_word = tsp_instruction_word::src_alpha_instr::one
+                                      | tsp_instruction_word::dst_alpha_instr::zero
+                                      | tsp_instruction_word::fog_control::no_fog;
+
+  const uint32_t texture_control_word = 0;
+
+  const uint32_t base_color = 0xffff0000;
+  *reinterpret_cast<ta_global_parameter::sprite *>(store_queue) =
+    ta_global_parameter::sprite(parameter_control_word,
+                                isp_tsp_instruction_word,
+                                tsp_instruction_word,
+                                texture_control_word,
+                                base_color,
+                                0,  // offset_color
+                                0,  // data_size_for_sort_dma
+                                0); // next_address_for_sort_dma
+  sq_transfer_32byte(ta_fifo_polygon_converter);
+
+  *reinterpret_cast<ta_vertex_parameter::sprite_type_0 *>(store_queue) =
+    ta_vertex_parameter::sprite_type_0(para_control::para_type::vertex_parameter,
+				       quad_vertices[0].x,
+				       quad_vertices[0].y,
+				       quad_vertices[0].z,
+				       quad_vertices[1].x,
+				       quad_vertices[1].y,
+				       quad_vertices[1].z,
+				       quad_vertices[2].x,
+				       quad_vertices[2].y,
+				       quad_vertices[2].z,
+				       quad_vertices[3].x,
+				       quad_vertices[3].y);
+  sq_transfer_64byte(ta_fifo_polygon_converter);
+
+  *reinterpret_cast<ta_global_parameter::end_of_list *>(store_queue) =
+    ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
+  sq_transfer_32byte(ta_fifo_polygon_converter);
+}
+
 void dma_transfer(uint32_t source, uint32_t destination, uint32_t transfers)
 {
   using namespace dmac;
@@ -282,8 +344,10 @@ void main()
 
   holly.FB_W_CTRL = fb_w_ctrl::fb_packmode::_8888_argb_32bit;
 
-  system.LMMODE0 = 1;
-  system.LMMODE1 = 1; // 32-bit
+  //system.LMMODE0 = 1;
+  //system.LMMODE1 = 1; // 32-bit
+  system.LMMODE0 = 0;
+  system.LMMODE1 = 0; // 64-bit
 
   uint32_t * out = (uint32_t *)&texture_memory32[texture_memory_alloc.framebuffer[0].start / 4];
   for (int i = 0; i < 640 * 480; i++) {
@@ -322,6 +386,7 @@ void main()
 
   uint32_t * in = (uint32_t *)&texture_memory64[texture_memory_alloc.texture.start / 4];
   uint32_t * framebuffer = (uint32_t *)(0x11000000 + texture_memory_alloc.framebuffer[0].start);
+  uint32_t * out = (uint32_t *)(0x11000000 + texture_memory_alloc.texture.start + 640 * 480 * 4);
 
   while (1) {
     ta_wait_translucent_list();
@@ -333,7 +398,6 @@ void main()
 			       ta_alloc,
 			       tile_width,
 			       tile_height);
-
     transfer_scene(theta);
 
     core_wait_end_of_render_video();
@@ -348,7 +412,7 @@ void main()
     dma_transfer((uint32_t)in, (uint32_t)inbuf, 640 * 480 * 4 / 32);
     while ((sh7091.DMAC.CHCR1 & dmac::chcr::te::transfers_completed) == 0);
 
-    sobel_fipr_store_queue2(inbuf, framebuffer, temp);
+    sobel_fipr_store_queue2(inbuf, out, temp);
 
     theta += half_degree;
     frame_ix += 1;