Fix const-correctness on psxgpu

- Added GsSetDrawEnv_DMA and GsUploadCLUT.

libpsx/include/psxgpu.h

@@ -679,84 +679,84 @@ typedef struct
  * @param poly3 Pointer to structure for monochrome 3 point polygon
  */
 
-void GsSortPoly3(GsPoly3 *poly3);
+void GsSortPoly3(const GsPoly3 *poly3);
 
 /**
  * Adds a monochrome 4 point polygon to the packet list
  * @param poly4 Pointer to structure for monochrome 4 point polygon
  */
 
-void GsSortPoly4(GsPoly4 *poly4);
+void GsSortPoly4(const GsPoly4 *poly4);
 
 /**
  * Adds a textured 3 point polygon to the packet list
  * @param tpoly3 Pointer to structure for textured 3 point polygon
  */
 
-void GsSortTPoly3(GsTPoly3 *tpoly3);
+void GsSortTPoly3(const GsTPoly3 *tpoly3);
 
 /**
  * Adds a textured 4 point polygon to the packet list
  * @param tpoly4 Pointer to structure for textured 4 point polygon
  */
 
-void GsSortTPoly4(GsTPoly4 *tpoly4);
+void GsSortTPoly4(const GsTPoly4 *tpoly4);
 
 /**
  * Adds a gradated 3 point polygon to the packet list
  * @param poly3 Pointer to structure for gradated 3 point polygon
  */
 
-void GsSortGPoly3(GsGPoly3 *poly3);
+void GsSortGPoly3(const GsGPoly3 *poly3);
 
 /**
  * Adds a gradated 4 point polygon to the packet list
  * @param poly4 Pointer to structure for gradated 4 point polygon
  */
 
-void GsSortGPoly4(GsGPoly4 *poly4);
+void GsSortGPoly4(const GsGPoly4 *poly4);
 
 /**
  * Adds a gradated textured 3 point polygon to the packet list
  * @param tpoly3 Pointer to structure for textured 3 point polygon
  */
 
-void GsSortGTPoly3(GsGTPoly3 *tpoly3);
+void GsSortGTPoly3(const GsGTPoly3 *tpoly3);
 
 /**
  * Adds a gradated 4 point polygon to the packet list
  * @param tpoly4 Pointer to structure for textured 4 point polygon
  */
 
-void GsSortGTPoly4(GsGTPoly4 *tpoly4);
+void GsSortGTPoly4(const GsGTPoly4 *tpoly4);
 
 /**
  * Adds a monochrome line to the packet list
  * @param line Pointer to structure for monochrome line
  */
 
-void GsSortLine(GsLine *line);
+void GsSortLine(const GsLine *line);
 
 /**
  * Adds a gradated line to the packet list
  * @param line Pointer to structure for gradated line
  */
 
-void GsSortGLine(GsGLine *line);
+void GsSortGLine(const GsGLine *line);
 
 /**
  * Adds a dot (pixel) to the packet list
  * @param dot Pointer to structure for dot
  */
 
-void GsSortDot(GsDot *dot);
+void GsSortDot(const GsDot *dot);
 
 /**
  * Adds a sprite to the packet list
  * @param sprite Pointer to structure for sprite
  */
 
-void GsSortSprite(GsSprite *sprite);
+void GsSortSprite(const GsSprite *sprite);
 
 /**
  * Always adds a REAL sprite to the packet list
@@ -770,14 +770,14 @@ void GsSortSprite(GsSprite *sprite);
  * @param sprite Pointer to structure for sprite
  */
 
-void GsSortSimpleSprite(GsSprite *sprite);
+void GsSortSimpleSprite(const GsSprite *sprite);
 
 /**
  * Adds a rectangle to the packet list
  * @param rectangle Pointer to structure for rectangle
  */
 
-void GsSortRectangle(GsRectangle *rectangle);
+void GsSortRectangle(const GsRectangle *rectangle);
 
 /**
  * Moves image data from a part of the framebuffer to another.
@@ -822,14 +822,20 @@ void DrawFBRect(int x, int y, int w, int h, int r, int g, int b);
  * @param drawenv Pointer to drawing environment structure
  */
 
-void GsSetDrawEnv(GsDrawEnv *drawenv);
+void GsSetDrawEnv(const GsDrawEnv *drawenv);
+
+/**
+ * Set drawing environment via DMA commands.
+ * @param drawenv Pointer to drawing environment structure
+ */
+void GsSetDrawEnv_DMA(const GsDrawEnv* drawenv);
 
 /**
  * Set display environment
  * @param dispenv Pointer to display environment structure
  */
 
-void GsSetDispEnv(GsDispEnv *dispenv);
+void GsSetDispEnv(const GsDispEnv *dispenv);
 
 
 
@@ -870,7 +876,12 @@ int GsImageFromTim(GsImage *image, const void *timdata);
  * Uploads an image described by a GsImage structure to video memory.
  */
 
-void GsUploadImage(GsImage *image);
+void GsUploadImage(const GsImage *image);
+
+/**
+ * Upload a CLUT described by a GsImage structure to video memory.
+ */
+void GsUploadCLUT(const GsImage *image);
 
 /**
  * Fills a GsSprite structure with information from an image described
@@ -878,7 +889,7 @@ void GsUploadImage(GsImage *image);
  * Sprite coordinates are set to 0.
  */
 
-int GsSpriteFromImage(GsSprite *sprite, GsImage *image, int do_upload);
+int GsSpriteFromImage(GsSprite *sprite, const GsImage *image, int do_upload);
 
 /**
  * Checks if the GPU is drawing
@@ -1135,14 +1146,14 @@ void GsRotateVector(int x_a, int y_a, int z_a, double *v, double *n);
  * @param line Pointer to structure for monochrome polyline
  */
 
-void GsSortPolyLine(GsPolyLine *line);
+void GsSortPolyLine(const GsPolyLine *line);
 
 /**
  * Adds a gradated polyline to the packet list
  * @param line Pointer to structure for monochrome line
  */
 
-void GsSortGPolyLine(GsGPolyLine *line);
+void GsSortGPolyLine(const GsGPolyLine *line);
 
 #ifdef __cplusplus
 }

libpsx/include/psxpad.h

@@ -176,7 +176,7 @@ typedef struct
 	}extra;
 }psx_pad_state;
 
-void QueryPAD(int pad_n, unsigned char *in, unsigned char *out, int len);
+void QueryPAD(int pad_n, const unsigned char *in, unsigned char *out, int len);
 void pad_read_raw(int pad_n, unsigned char *arr);
 void pad_escape_mode(int pad_n, int enable);
 void pad_enable_vibration(int pad_n);

libpsx/src/font.h

@@ -4,7 +4,7 @@
 
 // The font was created by John Reeves Hall
 
-unsigned char psxsdk_font_data[] =
+const unsigned char psxsdk_font_data[] =
 {
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 

libpsx/src/gpu.c

@@ -158,7 +158,7 @@ void GsDrawListPIO()
 		while(GsIsDrawing());
 }
 
-void GsSortPoly3(GsPoly3 *poly3)
+void GsSortPoly3(const GsPoly3 *poly3)
 {
 	int orig_pos = linked_list_pos;
 	int x;
@@ -177,7 +177,7 @@ void GsSortPoly3(GsPoly3 *poly3)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortPoly4(GsPoly4 *poly4)
+void GsSortPoly4(const GsPoly4 *poly4)
 {
 	int orig_pos = linked_list_pos;
 	int x;
@@ -196,7 +196,7 @@ void GsSortPoly4(GsPoly4 *poly4)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortGPoly3(GsGPoly3 *poly3)
+void GsSortGPoly3(const GsGPoly3 *poly3)
 {
 	// PKT 0x30
 
@@ -219,7 +219,7 @@ void GsSortGPoly3(GsGPoly3 *poly3)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortGPoly4(GsGPoly4 *poly4)
+void GsSortGPoly4(const GsGPoly4 *poly4)
 {
 	// PKT 0x38
 
@@ -242,7 +242,7 @@ void GsSortGPoly4(GsGPoly4 *poly4)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortLine(GsLine *line)
+void GsSortLine(const GsLine *line)
 {
 	// PKT 0x40
 
@@ -263,7 +263,7 @@ void GsSortLine(GsLine *line)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortGLine(GsGLine *line)
+void GsSortGLine(const GsGLine *line)
 {
 	// PKT 0x50
 
@@ -286,7 +286,7 @@ void GsSortGLine(GsGLine *line)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortDot(GsDot *dot)
+void GsSortDot(const GsDot *dot)
 {
 	// PKT 0x68
 
@@ -304,7 +304,7 @@ void GsSortDot(GsDot *dot)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortSprite(GsSprite *sprite)
+void GsSortSprite(const GsSprite *sprite)
 {
 	GsTPoly4 tpoly4;
 	int x, y;
@@ -447,7 +447,7 @@ void GsSortSprite(GsSprite *sprite)
 	}
 }
 
-void GsSortSimpleSprite(GsSprite *sprite)
+void GsSortSimpleSprite(const GsSprite *sprite)
 {
 	unsigned int orig_pos = linked_list_pos;
 	unsigned char pkt = 0x64;
@@ -465,7 +465,7 @@ void GsSortSimpleSprite(GsSprite *sprite)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortRectangle(GsRectangle *rectangle)
+void GsSortRectangle(const GsRectangle *rectangle)
 {
 	unsigned int orig_pos = linked_list_pos;
 	unsigned char pkt = 0x60;
@@ -482,7 +482,7 @@ void GsSortRectangle(GsRectangle *rectangle)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortTPoly4(GsTPoly4 *tpoly4)
+void GsSortTPoly4(const GsTPoly4 *tpoly4)
 {
 	unsigned int orig_pos = linked_list_pos;
 	unsigned char pkt = 0x2c;
@@ -515,7 +515,7 @@ void GsSortTPoly4(GsTPoly4 *tpoly4)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortTPoly3(GsTPoly3 *tpoly3)
+void GsSortTPoly3(const GsTPoly3 *tpoly3)
 {
 	int orig_pos = linked_list_pos;
 	int x;
@@ -604,6 +604,12 @@ void LoadImage(const void *img, int x, int y, int w, int h)
 //	while(!(GPU_CONTROL_PORT & (1<<0x1c)));
 }
 
+void GsUploadCLUT(const GsImage * image)
+{
+    LoadImage(  image->clut_data, image->clut_x, image->clut_y,
+                image->clut_w, image->clut_h    );
+}
+
 /*void LoadImage(void *img, int x, int y, int w, int h)
 {
 	GPU_dw(x, y, w, h, img);
@@ -628,7 +634,7 @@ void LoadImage(const void *img, int x, int y, int w, int h)
 	while(D2_CHCR & (1<<0x18));
 //}*/
 
-void GsSetDrawEnv(GsDrawEnv *drawenv)
+void GsSetDrawEnv(const GsDrawEnv *drawenv)
 {
 	int end_y, end_x;
 	int mf;
@@ -665,7 +671,25 @@ void GsSetDrawEnv(GsDrawEnv *drawenv)
 	GsCurDrawEnvH = drawenv->h;
 }
 
-void GsSetDispEnv(GsDispEnv *dispenv)
+void GsSetDrawEnv_DMA(const GsDrawEnv* drawenv)
+{
+    unsigned int orig_pos = linked_list_pos;
+
+    linked_list[linked_list_pos++] = 0x05000000;
+
+    linked_list[linked_list_pos++] = (0xE1 << 24) |(drawenv->draw_on_display>=1)<<10|(drawenv->dither>=1)<<9;
+    linked_list[linked_list_pos++] = (0xE2 << 24);
+    linked_list[linked_list_pos++] = ((0xE3 << 24) | (drawenv->x & 0x7FF) | ((drawenv->y & 0x3FF) << 10));
+    linked_list[linked_list_pos++] = ((0xE4 << 24) | ((drawenv->x + drawenv->w - 1) & 0x3FF) | (((drawenv->y + drawenv->h - 1) & 0x3FF) << 10));
+    linked_list[linked_list_pos++] = ((0xE5 << 24) | ((drawenv->x) & 0x7FF) | (((drawenv->y ) & 0x7FF) << 11));
+
+    linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
+
+    GsCurDrawEnvW = drawenv->w;
+    GsCurDrawEnvH = drawenv->h;
+}
+
+void GsSetDispEnv(const GsDispEnv *dispenv)
 {
 	gpu_ctrl(5, (dispenv->y<<10)|dispenv->x); // Display offset
 }
@@ -938,7 +962,7 @@ int GsImageFromTim(GsImage *image, const void *timdata)
 	return 1;
 }
 
-void GsUploadImage(GsImage *image)
+void GsUploadImage(const GsImage *image)
 {
 	if(image->has_clut)
 		LoadImage(image->clut_data, image->clut_x, image->clut_y,
@@ -947,7 +971,7 @@ void GsUploadImage(GsImage *image)
 	LoadImage(image->data, image->x, image->y, image->w, image->h);
 }
 
-int GsSpriteFromImage(GsSprite *sprite, GsImage *image, int do_upload)
+int GsSpriteFromImage(GsSprite *sprite, const GsImage *image, int do_upload)
 {
 	if(do_upload)
 		GsUploadImage(image);
@@ -1386,7 +1410,7 @@ void GsSetListEx(unsigned int *listptr, unsigned int listpos)
 	linked_list_pos = listpos;
 }
 
-void GsSortPolyLine(GsPolyLine *line)
+void GsSortPolyLine(const GsPolyLine *line)
 {
 	// PKT 0x48
 
@@ -1409,7 +1433,7 @@ void GsSortPolyLine(GsPolyLine *line)
 	linked_list[orig_pos] = ((line->npoints+3) << 24) | (((unsigned int)&linked_list[linked_list_pos]) & 0xffffff);
 }
 
-void GsSortGPolyLine(GsGPolyLine *line)
+void GsSortGPolyLine(const GsGPolyLine *line)
 {
 	// PKT 0x58
 
@@ -1434,7 +1458,7 @@ void GsSortGPolyLine(GsGPolyLine *line)
 	linked_list[orig_pos] = (((line->npoints*2)+2) << 24) | (((unsigned int)&linked_list[linked_list_pos]) & 0xffffff);
 }
 
-void GsSortGTPoly4(GsGTPoly4 *tpoly4)
+void GsSortGTPoly4(const GsGTPoly4 *tpoly4)
 {
 	unsigned int orig_pos = linked_list_pos;
 	unsigned char pkt = 0x3c;
@@ -1470,7 +1494,7 @@ void GsSortGTPoly4(GsGTPoly4 *tpoly4)
 	linked_list[orig_pos] |= ((unsigned int)&linked_list[linked_list_pos]) & 0xffffff;
 }
 
-void GsSortGTPoly3(GsGTPoly3 *tpoly3)
+void GsSortGTPoly3(const GsGTPoly3 *tpoly3)
 {
 	int orig_pos = linked_list_pos;
 	int x;

libpsx/src/pad.c

@@ -46,7 +46,7 @@
 unsigned char readpad_vibrations[4][2];
 int querypad_rxrdy = 1;
 
-void QueryPAD(int pad_n, unsigned char *in, unsigned char *out, int len)
+void QueryPAD(int pad_n, const unsigned char *in, unsigned char *out, int len)
 {
 	volatile int x;
 	volatile int y; // specified as volatile to not make busy loops get optimized out
@@ -160,4 +160,3 @@ void pad_set_analog(int pad_n, int lock)
 	QueryPAD(pad_n, pad_cmd2, NULL, sizeof(pad_cmd));
 	pad_escape_mode(pad_n, 0);
 }*/
-