PS1/Saturn: Water/Bedrock renders

Author: UnknownShadow200

src/EnvRenderer.c

@@ -22,7 +22,12 @@
 
 cc_bool EnvRenderer_Legacy, EnvRenderer_Minimal;
 
-#define EnvRenderer_AxisSize() (EnvRenderer_Legacy ? 128 : 2048)
+static CC_INLINE int EnvRenderer_AxisSize(void) {
+	if (Gfx.Limitations & GFX_LIMIT_MAX_VERTEX_SIZE) return 8;
+
+	return EnvRenderer_Legacy ? 128 : 2048;
+}
+
 /* Returns the number of vertices needed to subdivide a quad */
 static int CalcNumVertices(int axis1Len, int axis2Len) {
 	int axisSize = EnvRenderer_AxisSize();
@@ -189,7 +194,7 @@ static CC_NOINLINE void BuildClouds(void) {
 
 void EnvRenderer_RenderClouds(void) {
 	float offset;
-	if (Env.CloudsHeight < -2000) return;
+	if (Env.CloudsHeight < -2000 || !clouds_tex) return;
 
 	if (!clouds_vb) {
 		BuildClouds();

src/Game.h

@@ -37,12 +37,10 @@ extern cc_string Game_Mppass;
 	#define Game_NumStates 1
 #endif
 
-#if defined CC_BUILD_N64
+#if defined CC_BUILD_N64 || defined CC_BUILD_PS1 || defined CC_BUILD_SATURN
     #define DEFAULT_VIEWDIST 20
-#elif defined CC_BUILD_NDS || defined CC_BUILD_SATURN
+#elif defined CC_BUILD_NDS
     #define DEFAULT_VIEWDIST 192
-#elif defined CC_BUILD_PS1
-    #define DEFAULT_VIEWDIST 64
 #else
     #define DEFAULT_VIEWDIST 512
 #endif

src/Graphics.h

@@ -69,7 +69,7 @@ CC_VAR extern struct _GfxData {
 	/* Whether the graphics backend supports non power of two textures */
 	cc_bool SupportsNonPowTwoTextures;
 	/* Limitations of the graphics backend, see GFX_LIMIT values */
-	cc_bool Limitations;
+	cc_uint8 Limitations;
 	/* Type of the backend (e.g. OpenGL, Direct3D 9, etc)*/
 	cc_uint8 BackendType;
 	cc_bool __pad;
@@ -91,6 +91,8 @@ CC_VAR extern struct _GfxData {
 /* Whether the graphics backend requires very large quads to be broken */
 /*  up into smaller quads, to reduce fog interpolation artifacts */
 #define GFX_LIMIT_VERTEX_ONLY_FOG 0x02
+/* Whether the graphics backend only supports a small maximum quad size */
+#define GFX_LIMIT_MAX_VERTEX_SIZE 0x04
 
 extern const cc_string Gfx_LowPerfMessage;
 

src/Graphics_PS1.c

@@ -106,6 +106,7 @@ static void BuildContext(RenderBuffer* buf) {
 	prim->area_code[0]  = GP0_CMD_DRAW_MIN_PACK(buf->clipX, buf->clipY);
 	prim->area_code[1]  = GP0_CMD_DRAW_MAX_PACK(buf->clipX + buf->clipW - 1, buf->clipY + buf->clipH - 1);
 	prim->ofst_code[0]  = GP0_CMD_DRAW_OFFSET_PACK(buf->clipX + buf->ofstX, buf->clipY + buf->ofstY);
+	// VRAM clear command
 	prim->fill_code[0]  = PACK_RGBC(0, 0, 0, GP0_CMD_MEM_FILL);
 	prim->fill_code[1]  = GP0_CMD_FILL_XY(buf->clipX, buf->clipY);
 	prim->fill_code[2]  = GP0_CMD_FILL_WH(buf->clipW, buf->clipH);
@@ -173,6 +174,7 @@ void Gfx_Create(void) {
 	Gfx.MaxTexWidth  = 128;
 	Gfx.MaxTexHeight = 256;
 	Gfx.Created      = true;
+	Gfx.Limitations  = GFX_LIMIT_MAX_VERTEX_SIZE;
 
 	Gfx_RestoreState();
 	SetupContexts(Window_Main.Width, Window_Main.Height);

src/Graphics_Saturn.c

@@ -9,7 +9,7 @@
 
 #define SCREEN_WIDTH  320
 #define SCREEN_HEIGHT 224
-#define CMDS_COUNT 400
+#define CMDS_COUNT 450
 #define HDR_CMDS 2
 
 static struct {
@@ -120,7 +120,7 @@ void Gfx_Create(void) {
 	Gfx.MaxTexWidth  = 128;
 	Gfx.MaxTexHeight = 16; // 128
 	Gfx.Created      = true;
-	Gfx.Limitations  = GFX_LIMIT_NO_UV_SUPPORT;
+	Gfx.Limitations  = GFX_LIMIT_NO_UV_SUPPORT | GFX_LIMIT_MAX_VERTEX_SIZE;
 }
 
 void Gfx_Free(void) {