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SDL/src/render/psp/SDL_render_psp.c
stdgregwar 0b7b0977fc fix PSP texure artifacts
2021-12-15 18:00:28 -08:00

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/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_RENDER_PSP
#include "SDL_hints.h"
#include "../SDL_sysrender.h"
#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspgu.h>
#include <pspgum.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <pspge.h>
#include <stdarg.h>
#include <stdlib.h>
#include <vram.h>
/* PSP renderer implementation, based on the PGE */
#define PSP_SCREEN_WIDTH 480
#define PSP_SCREEN_HEIGHT 272
#define PSP_FRAME_BUFFER_WIDTH 512
#define PSP_FRAME_BUFFER_SIZE (PSP_FRAME_BUFFER_WIDTH*PSP_SCREEN_HEIGHT)
static unsigned int __attribute__((aligned(16))) DisplayList[262144];
#define COL5650(r,g,b,a) ((r>>3) | ((g>>2)<<5) | ((b>>3)<<11))
#define COL5551(r,g,b,a) ((r>>3) | ((g>>3)<<5) | ((b>>3)<<10) | (a>0?0x7000:0))
#define COL4444(r,g,b,a) ((r>>4) | ((g>>4)<<4) | ((b>>4)<<8) | ((a>>4)<<12))
#define COL8888(r,g,b,a) ((r) | ((g)<<8) | ((b)<<16) | ((a)<<24))
typedef struct
{
SDL_bool viewport_dirty;
SDL_Rect viewport;
SDL_bool cliprect_enabled_dirty;
SDL_bool cliprect_enabled;
SDL_bool cliprect_dirty;
SDL_Rect cliprect;
} PSP_DrawStateCache;
typedef struct
{
void* frontbuffer ;
void* backbuffer ;
SDL_bool initialized ;
SDL_bool displayListAvail ;
unsigned int psm ;
unsigned int bpp ;
SDL_bool vsync;
unsigned int currentColor;
int currentBlendMode;
PSP_DrawStateCache drawstate;
SDL_bool vblank_not_reached; /**< wether vblank wasn't reached */
} PSP_RenderData;
typedef struct
{
void *data; /**< Image data. */
unsigned int size; /**< Size of data in bytes. */
unsigned int width; /**< Image width. */
unsigned int height; /**< Image height. */
unsigned int textureWidth; /**< Texture width (power of two). */
unsigned int textureHeight; /**< Texture height (power of two). */
unsigned int bits; /**< Image bits per pixel. */
unsigned int format; /**< Image format - one of ::pgePixelFormat. */
unsigned int pitch;
SDL_bool swizzled; /**< Is image swizzled. */
} PSP_TextureData;
typedef struct
{
float x, y, z;
} VertV;
typedef struct
{
float u, v;
float x, y, z;
} VertTV;
typedef struct
{
SDL_Color col;
float x, y, z;
} VertCV;
typedef struct
{
float u, v;
SDL_Color col;
float x, y, z;
} VertTCV;
#define PI 3.14159265358979f
#define radToDeg(x) ((x)*180.f/PI)
#define degToRad(x) ((x)*PI/180.f)
float MathAbs(float x)
{
float result;
__asm__ volatile (
"mtv %1, S000\n"
"vabs.s S000, S000\n"
"mfv %0, S000\n"
: "=r"(result) : "r"(x));
return result;
}
void MathSincos(float r, float *s, float *c)
{
__asm__ volatile (
"mtv %2, S002\n"
"vcst.s S003, VFPU_2_PI\n"
"vmul.s S002, S002, S003\n"
"vrot.p C000, S002, [s, c]\n"
"mfv %0, S000\n"
"mfv %1, S001\n"
: "=r"(*s), "=r"(*c): "r"(r));
}
void Swap(float *a, float *b)
{
float n=*a;
*a = *b;
*b = n;
}
/* Return next power of 2 */
static int
TextureNextPow2(unsigned int w)
{
unsigned int n = 2;
if(w == 0)
return 0;
while(w > n)
n <<= 1;
return n;
}
static void psp_on_vblank(u32 sub, PSP_RenderData *data)
{
if (data)
data->vblank_not_reached = SDL_FALSE;
}
static int
PixelFormatToPSPFMT(Uint32 format)
{
switch (format) {
case SDL_PIXELFORMAT_BGR565:
return GU_PSM_5650;
case SDL_PIXELFORMAT_ABGR1555:
return GU_PSM_5551;
case SDL_PIXELFORMAT_ABGR4444:
return GU_PSM_4444;
case SDL_PIXELFORMAT_ABGR8888:
return GU_PSM_8888;
default:
return GU_PSM_8888;
}
}
void
StartDrawing(SDL_Renderer * renderer)
{
PSP_RenderData *data = (PSP_RenderData *) renderer->driverdata;
if(data->displayListAvail)
return;
sceGuStart(GU_DIRECT, DisplayList);
data->displayListAvail = SDL_TRUE;
}
int
TextureSwizzle(PSP_TextureData *psp_texture)
{
int bytewidth, height;
int rowblocks, rowblocksadd;
int i, j;
unsigned int blockaddress = 0;
unsigned int *src = NULL;
unsigned char *data = NULL;
if(psp_texture->swizzled)
return 1;
bytewidth = psp_texture->textureWidth*(psp_texture->bits>>3);
height = psp_texture->size / bytewidth;
rowblocks = (bytewidth>>4);
rowblocksadd = (rowblocks-1)<<7;
src = (unsigned int*) psp_texture->data;
data = SDL_malloc(psp_texture->size);
for(j = 0; j < height; j++, blockaddress += 16)
{
unsigned int *block;
block = (unsigned int*)&data[blockaddress];
for(i = 0; i < rowblocks; i++)
{
*block++ = *src++;
*block++ = *src++;
*block++ = *src++;
*block++ = *src++;
block += 28;
}
if((j & 0x7) == 0x7)
blockaddress += rowblocksadd;
}
SDL_free(psp_texture->data);
psp_texture->data = data;
psp_texture->swizzled = SDL_TRUE;
sceKernelDcacheWritebackRange(psp_texture->data, psp_texture->size);
return 1;
}
int TextureUnswizzle(PSP_TextureData *psp_texture)
{
int bytewidth, height;
int widthblocks, heightblocks;
int dstpitch, dstrow;
int blockx, blocky;
int j;
unsigned int *src = NULL;
unsigned char *data = NULL;
unsigned char *ydst = NULL;
if(!psp_texture->swizzled)
return 1;
bytewidth = psp_texture->textureWidth*(psp_texture->bits>>3);
height = psp_texture->size / bytewidth;
widthblocks = bytewidth/16;
heightblocks = height/8;
dstpitch = (bytewidth - 16)/4;
dstrow = bytewidth * 8;
src = (unsigned int*) psp_texture->data;
data = SDL_malloc(psp_texture->size);
if(!data)
return 0;
ydst = (unsigned char *)data;
for(blocky = 0; blocky < heightblocks; ++blocky)
{
unsigned char *xdst = ydst;
for(blockx = 0; blockx < widthblocks; ++blockx)
{
unsigned int *block;
block = (unsigned int*)xdst;
for(j = 0; j < 8; ++j)
{
*(block++) = *(src++);
*(block++) = *(src++);
*(block++) = *(src++);
*(block++) = *(src++);
block += dstpitch;
}
xdst += 16;
}
ydst += dstrow;
}
SDL_free(psp_texture->data);
psp_texture->data = data;
psp_texture->swizzled = SDL_FALSE;
sceKernelDcacheWritebackRange(psp_texture->data, psp_texture->size);
return 1;
}
static void
PSP_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
{
}
static int
PSP_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
/* PSP_RenderData *renderdata = (PSP_RenderData *) renderer->driverdata; */
PSP_TextureData* psp_texture = (PSP_TextureData*) SDL_calloc(1, sizeof(*psp_texture));
if(!psp_texture)
return -1;
psp_texture->swizzled = SDL_FALSE;
psp_texture->width = texture->w;
psp_texture->height = texture->h;
psp_texture->textureHeight = TextureNextPow2(texture->h);
psp_texture->textureWidth = TextureNextPow2(texture->w);
psp_texture->format = PixelFormatToPSPFMT(texture->format);
switch(psp_texture->format)
{
case GU_PSM_5650:
case GU_PSM_5551:
case GU_PSM_4444:
psp_texture->bits = 16;
break;
case GU_PSM_8888:
psp_texture->bits = 32;
break;
default:
return -1;
}
psp_texture->pitch = psp_texture->textureWidth * SDL_BYTESPERPIXEL(texture->format);
psp_texture->size = psp_texture->textureHeight*psp_texture->pitch;
psp_texture->data = SDL_calloc(1, psp_texture->size);
if(!psp_texture->data)
{
SDL_free(psp_texture);
return SDL_OutOfMemory();
}
texture->driverdata = psp_texture;
return 0;
}
void
TextureActivate(SDL_Texture * texture)
{
PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata;
int scaleMode = (texture->scaleMode == SDL_ScaleModeNearest) ? GU_NEAREST : GU_LINEAR;
/* Swizzling is useless with small textures. */
if (texture->w >= 16 || texture->h >= 16)
{
TextureSwizzle(psp_texture);
}
sceGuEnable(GU_TEXTURE_2D);
sceGuTexWrap(GU_REPEAT, GU_REPEAT);
sceGuTexMode(psp_texture->format, 0, 0, psp_texture->swizzled);
sceGuTexFilter(scaleMode, scaleMode); /* GU_NEAREST good for tile-map */
/* GU_LINEAR good for scaling */
sceGuTexImage(0, psp_texture->textureWidth, psp_texture->textureHeight, psp_texture->textureWidth, psp_texture->data);
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
}
static int
PSP_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, void **pixels, int *pitch);
static int
PSP_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, const void *pixels, int pitch)
{
/* PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata; */
const Uint8 *src;
Uint8 *dst;
int row, length,dpitch;
src = pixels;
PSP_LockTexture(renderer, texture,rect,(void **)&dst, &dpitch);
length = rect->w * SDL_BYTESPERPIXEL(texture->format);
if (length == pitch && length == dpitch) {
SDL_memcpy(dst, src, length*rect->h);
} else {
for (row = 0; row < rect->h; ++row) {
SDL_memcpy(dst, src, length);
src += pitch;
dst += dpitch;
}
}
sceKernelDcacheWritebackAll();
return 0;
}
static int
PSP_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, void **pixels, int *pitch)
{
PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata;
*pixels =
(void *) ((Uint8 *) psp_texture->data + rect->y * psp_texture->pitch +
rect->x * SDL_BYTESPERPIXEL(texture->format));
*pitch = psp_texture->pitch;
return 0;
}
static void
PSP_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata;
SDL_Rect rect;
/* We do whole texture updates, at least for now */
rect.x = 0;
rect.y = 0;
rect.w = texture->w;
rect.h = texture->h;
PSP_UpdateTexture(renderer, texture, &rect, psp_texture->data, psp_texture->pitch);
}
static void
PSP_SetTextureScaleMode(SDL_Renderer * renderer, SDL_Texture * texture, SDL_ScaleMode scaleMode)
{
/* Nothing to do because TextureActivate takes care of it */
}
static int
PSP_SetRenderTarget(SDL_Renderer * renderer, SDL_Texture * texture)
{
return 0;
}
static int
PSP_QueueSetViewport(SDL_Renderer * renderer, SDL_RenderCommand *cmd)
{
return 0; /* nothing to do in this backend. */
}
static int
PSP_QueueDrawPoints(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FPoint * points, int count)
{
VertV *verts = (VertV *) SDL_AllocateRenderVertices(renderer, count * sizeof (VertV), 4, &cmd->data.draw.first);
int i;
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
for (i = 0; i < count; i++, verts++, points++) {
verts->x = points->x;
verts->y = points->y;
verts->z = 0.0f;
}
return 0;
}
static int
PSP_QueueGeometry(SDL_Renderer *renderer, SDL_RenderCommand *cmd, SDL_Texture *texture,
const float *xy, int xy_stride, const SDL_Color *color, int color_stride, const float *uv, int uv_stride,
int num_vertices, const void *indices, int num_indices, int size_indices,
float scale_x, float scale_y)
{
int i;
int count = indices ? num_indices : num_vertices;
cmd->data.draw.count = count;
size_indices = indices ? size_indices : 0;
if (texture == NULL) {
VertCV *verts;
verts = (VertCV *) SDL_AllocateRenderVertices(renderer, count * sizeof (VertCV), 4, &cmd->data.draw.first);
if (!verts) {
return -1;
}
for (i = 0; i < count; i++) {
int j;
float *xy_;
SDL_Color col_;
if (size_indices == 4) {
j = ((const Uint32 *)indices)[i];
} else if (size_indices == 2) {
j = ((const Uint16 *)indices)[i];
} else if (size_indices == 1) {
j = ((const Uint8 *)indices)[i];
} else {
j = i;
}
xy_ = (float *)((char*)xy + j * xy_stride);
col_ = *(SDL_Color *)((char*)color + j * color_stride);
verts->x = xy_[0] * scale_x;
verts->y = xy_[1] * scale_y;
verts->z = 0;
verts->col = col_;
verts++;
}
} else {
PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata;
VertTCV *verts;
verts = (VertTCV *) SDL_AllocateRenderVertices(renderer, count * sizeof (VertTCV), 4, &cmd->data.draw.first);
if (!verts) {
return -1;
}
for (i = 0; i < count; i++) {
int j;
float *xy_;
SDL_Color col_;
float *uv_;
if (size_indices == 4) {
j = ((const Uint32 *)indices)[i];
} else if (size_indices == 2) {
j = ((const Uint16 *)indices)[i];
} else if (size_indices == 1) {
j = ((const Uint8 *)indices)[i];
} else {
j = i;
}
xy_ = (float *)((char*)xy + j * xy_stride);
col_ = *(SDL_Color *)((char*)color + j * color_stride);
uv_ = (float *)((char*)uv + j * uv_stride);
verts->x = xy_[0] * scale_x;
verts->y = xy_[1] * scale_y;
verts->z = 0;
verts->col = col_;
verts->u = uv_[0] * psp_texture->textureWidth;
verts->v = uv_[1] * psp_texture->textureHeight;
verts++;
}
}
return 0;
}
static int
PSP_QueueFillRects(SDL_Renderer * renderer, SDL_RenderCommand *cmd, const SDL_FRect * rects, int count)
{
VertV *verts = (VertV *) SDL_AllocateRenderVertices(renderer, count * 2 * sizeof (VertV), 4, &cmd->data.draw.first);
int i;
if (!verts) {
return -1;
}
cmd->data.draw.count = count;
for (i = 0; i < count; i++, rects++) {
const SDL_FRect *rect = &rects[i];
verts->x = rect->x;
verts->y = rect->y;
verts->z = 0.0f;
verts++;
verts->x = rect->x + rect->w;
verts->y = rect->y + rect->h;
verts->z = 0.0f;
verts++;
}
return 0;
}
static int
PSP_QueueCopy(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect)
{
VertTV *verts;
const float x = dstrect->x;
const float y = dstrect->y;
const float width = dstrect->w;
const float height = dstrect->h;
const float u0 = srcrect->x;
const float v0 = srcrect->y;
const float u1 = srcrect->x + srcrect->w;
const float v1 = srcrect->y + srcrect->h;
if((MathAbs(u1) - MathAbs(u0)) < 64.0f)
{
verts = (VertTV *) SDL_AllocateRenderVertices(renderer, 2 * sizeof (VertTV), 4, &cmd->data.draw.first);
if (!verts) {
return -1;
}
cmd->data.draw.count = 1;
verts->u = u0;
verts->v = v0;
verts->x = x;
verts->y = y;
verts->z = 0;
verts++;
verts->u = u1;
verts->v = v1;
verts->x = x + width;
verts->y = y + height;
verts->z = 0;
verts++;
}
else
{
float start, end;
float curU = u0;
float curX = x;
const float endX = x + width;
const float slice = 64.0f;
const size_t count = SDL_ceilf(width / slice);
size_t i;
float ustep = (u1 - u0)/width * slice;
if(ustep < 0.0f)
ustep = -ustep;
cmd->data.draw.count = count;
verts = (VertTV *) SDL_AllocateRenderVertices(renderer, count * 2 * sizeof (VertTV), 4, &cmd->data.draw.first);
if (!verts) {
return -1;
}
for(i = 0, start = 0, end = width; i < count; i++, start += slice)
{
const float polyWidth = ((curX + slice) > endX) ? (endX - curX) : slice;
const float sourceWidth = ((curU + ustep) > u1) ? (u1 - curU) : ustep;
SDL_assert(start < end);
verts->u = curU;
verts->v = v0;
verts->x = curX;
verts->y = y;
verts->z = 0;
verts++;
curU += sourceWidth;
curX += polyWidth;
verts->u = curU;
verts->v = v1;
verts->x = curX;
verts->y = (y + height);
verts->z = 0;
verts++;
}
}
return 0;
}
static int
PSP_QueueCopyEx(SDL_Renderer * renderer, SDL_RenderCommand *cmd, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_FRect * dstrect,
const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip)
{
VertTV *verts = (VertTV *) SDL_AllocateRenderVertices(renderer, 4 * sizeof (VertTV), 4, &cmd->data.draw.first);
const float centerx = center->x;
const float centery = center->y;
const float x = dstrect->x + centerx;
const float y = dstrect->y + centery;
const float width = dstrect->w - centerx;
const float height = dstrect->h - centery;
float s, c;
float cw, sw, ch, sh;
float u0 = srcrect->x;
float v0 = srcrect->y;
float u1 = srcrect->x + srcrect->w;
float v1 = srcrect->y + srcrect->h;
if (!verts) {
return -1;
}
cmd->data.draw.count = 1;
MathSincos(degToRad(angle), &s, &c);
cw = c * width;
sw = s * width;
ch = c * height;
sh = s * height;
if (flip & SDL_FLIP_VERTICAL) {
Swap(&v0, &v1);
}
if (flip & SDL_FLIP_HORIZONTAL) {
Swap(&u0, &u1);
}
verts->u = u0;
verts->v = v0;
verts->x = x - cw + sh;
verts->y = y - sw - ch;
verts->z = 0;
verts++;
verts->u = u0;
verts->v = v1;
verts->x = x - cw - sh;
verts->y = y - sw + ch;
verts->z = 0;
verts++;
verts->u = u1;
verts->v = v1;
verts->x = x + cw - sh;
verts->y = y + sw + ch;
verts->z = 0;
verts++;
verts->u = u1;
verts->v = v0;
verts->x = x + cw + sh;
verts->y = y + sw - ch;
verts->z = 0;
verts++;
return 0;
}
static void
PSP_SetBlendMode(SDL_Renderer * renderer, int blendMode)
{
PSP_RenderData *data = (PSP_RenderData *) renderer->driverdata;
if (blendMode != data-> currentBlendMode) {
switch (blendMode) {
case SDL_BLENDMODE_NONE:
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
sceGuDisable(GU_BLEND);
break;
case SDL_BLENDMODE_BLEND:
sceGuTexFunc(GU_TFX_MODULATE , GU_TCC_RGBA);
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0 );
break;
case SDL_BLENDMODE_ADD:
sceGuTexFunc(GU_TFX_MODULATE , GU_TCC_RGBA);
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_FIX, 0, 0x00FFFFFF );
break;
case SDL_BLENDMODE_MOD:
sceGuTexFunc(GU_TFX_MODULATE , GU_TCC_RGBA);
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_FIX, GU_SRC_COLOR, 0, 0);
break;
case SDL_BLENDMODE_MUL:
sceGuTexFunc(GU_TFX_MODULATE , GU_TCC_RGBA);
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_DST_COLOR, GU_ONE_MINUS_SRC_ALPHA, 0, 0);
break;
}
data->currentBlendMode = blendMode;
}
}
static int
PSP_RunCommandQueue(SDL_Renderer * renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize)
{
PSP_RenderData *data = (PSP_RenderData *) renderer->driverdata;
Uint8 *gpumem = NULL;
StartDrawing(renderer);
/* note that before the renderer interface change, this would do extrememly small
batches with sceGuGetMemory()--a few vertices at a time--and it's not clear that
this won't fail if you try to push 100,000 draw calls in a single batch.
I don't know what the limits on PSP hardware are. It might be useful to have
rendering backends report a reasonable maximum, so the higher level can flush
if we appear to be exceeding that. */
gpumem = (Uint8 *) sceGuGetMemory(vertsize);
if (!gpumem) {
return SDL_SetError("Couldn't obtain a %d-byte vertex buffer!", (int) vertsize);
}
SDL_memcpy(gpumem, vertices, vertsize);
while (cmd) {
switch (cmd->command) {
case SDL_RENDERCMD_SETDRAWCOLOR: {
break; /* !!! FIXME: we could cache drawstate like color */
}
case SDL_RENDERCMD_SETVIEWPORT: {
SDL_Rect *viewport = &data->drawstate.viewport;
if (SDL_memcmp(viewport, &cmd->data.viewport.rect, sizeof (SDL_Rect)) != 0) {
SDL_memcpy(viewport, &cmd->data.viewport.rect, sizeof (SDL_Rect));
data->drawstate.viewport_dirty = SDL_TRUE;
}
break;
}
case SDL_RENDERCMD_SETCLIPRECT: {
const SDL_Rect *rect = &cmd->data.cliprect.rect;
if (data->drawstate.cliprect_enabled != cmd->data.cliprect.enabled) {
data->drawstate.cliprect_enabled = cmd->data.cliprect.enabled;
data->drawstate.cliprect_enabled_dirty = SDL_TRUE;
}
if (SDL_memcmp(&data->drawstate.cliprect, rect, sizeof (SDL_Rect)) != 0) {
SDL_memcpy(&data->drawstate.cliprect, rect, sizeof (SDL_Rect));
data->drawstate.cliprect_dirty = SDL_TRUE;
}
break;
}
case SDL_RENDERCMD_CLEAR: {
const Uint8 r = cmd->data.color.r;
const Uint8 g = cmd->data.color.g;
const Uint8 b = cmd->data.color.b;
const Uint8 a = cmd->data.color.a;
const Uint32 color = (((Uint32)a << 24) | (b << 16) | (g << 8) | r);
/* !!! FIXME: we could cache drawstate like clear color */
sceGuClearColor(color);
sceGuClearDepth(0);
sceGuClear(GU_COLOR_BUFFER_BIT|GU_DEPTH_BUFFER_BIT|GU_FAST_CLEAR_BIT);
break;
}
case SDL_RENDERCMD_DRAW_POINTS: {
const size_t count = cmd->data.draw.count;
const VertV *verts = (VertV *) (gpumem + cmd->data.draw.first);
const Uint8 r = cmd->data.draw.r;
const Uint8 g = cmd->data.draw.g;
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const Uint32 color = (((Uint32)a << 24) | (b << 16) | (g << 8) | r);
/* !!! FIXME: we could cache draw state like color, texturing, etc */
sceGuColor(color);
sceGuDisable(GU_TEXTURE_2D);
sceGuShadeModel(GU_FLAT);
sceGuDrawArray(GU_POINTS, GU_VERTEX_32BITF|GU_TRANSFORM_2D, count, 0, verts);
sceGuShadeModel(GU_SMOOTH);
sceGuEnable(GU_TEXTURE_2D);
break;
}
case SDL_RENDERCMD_DRAW_LINES: {
const size_t count = cmd->data.draw.count;
const VertV *verts = (VertV *) (gpumem + cmd->data.draw.first);
const Uint8 r = cmd->data.draw.r;
const Uint8 g = cmd->data.draw.g;
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const Uint32 color = (((Uint32)a << 24) | (b << 16) | (g << 8) | r);
/* !!! FIXME: we could cache draw state like color, texturing, etc */
sceGuColor(color);
sceGuDisable(GU_TEXTURE_2D);
sceGuShadeModel(GU_FLAT);
sceGuDrawArray(GU_LINE_STRIP, GU_VERTEX_32BITF|GU_TRANSFORM_2D, count, 0, verts);
sceGuShadeModel(GU_SMOOTH);
sceGuEnable(GU_TEXTURE_2D);
break;
}
case SDL_RENDERCMD_FILL_RECTS: {
const size_t count = cmd->data.draw.count;
const VertV *verts = (VertV *) (gpumem + cmd->data.draw.first);
const Uint8 r = cmd->data.draw.r;
const Uint8 g = cmd->data.draw.g;
const Uint8 b = cmd->data.draw.b;
const Uint8 a = cmd->data.draw.a;
const Uint32 color = (((Uint32)a << 24) | (b << 16) | (g << 8) | r);
/* !!! FIXME: we could cache draw state like color, texturing, etc */
sceGuColor(color);
sceGuDisable(GU_TEXTURE_2D);
sceGuShadeModel(GU_FLAT);
sceGuDrawArray(GU_SPRITES, GU_VERTEX_32BITF|GU_TRANSFORM_2D, 2 * count, 0, verts);
sceGuShadeModel(GU_SMOOTH);
sceGuEnable(GU_TEXTURE_2D);
break;
}
case SDL_RENDERCMD_COPY: {
const size_t count = cmd->data.draw.count;
const VertTV *verts = (VertTV *) (gpumem + cmd->data.draw.first);
const Uint8 alpha = cmd->data.draw.a;
TextureActivate(cmd->data.draw.texture);
PSP_SetBlendMode(renderer, cmd->data.draw.blend);
if(alpha != 255) { /* !!! FIXME: is this right? */
sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGBA);
sceGuColor(GU_RGBA(255, 255, 255, alpha));
} else {
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
sceGuColor(0xFFFFFFFF);
}
sceGuDrawArray(GU_SPRITES, GU_TEXTURE_32BITF|GU_VERTEX_32BITF|GU_TRANSFORM_2D, 2 * count, 0, verts);
if(alpha != 255) {
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
}
break;
}
case SDL_RENDERCMD_COPY_EX: {
const VertTV *verts = (VertTV *) (gpumem + cmd->data.draw.first);
const Uint8 alpha = cmd->data.draw.a;
TextureActivate(cmd->data.draw.texture);
PSP_SetBlendMode(renderer, cmd->data.draw.blend);
if(alpha != 255) { /* !!! FIXME: is this right? */
sceGuTexFunc(GU_TFX_MODULATE, GU_TCC_RGBA);
sceGuColor(GU_RGBA(255, 255, 255, alpha));
} else {
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
sceGuColor(0xFFFFFFFF);
}
sceGuDrawArray(GU_TRIANGLE_FAN, GU_TEXTURE_32BITF|GU_VERTEX_32BITF|GU_TRANSFORM_2D, 4, 0, verts);
if(alpha != 255) {
sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGBA);
}
break;
}
case SDL_RENDERCMD_GEOMETRY: {
const size_t count = cmd->data.draw.count;
if (cmd->data.draw.texture == NULL) {
const VertCV *verts = (VertCV *) (gpumem + cmd->data.draw.first);
sceGuDisable(GU_TEXTURE_2D);
/* In GU_SMOOTH mode */
sceGuDrawArray(GU_TRIANGLES, GU_COLOR_8888|GU_VERTEX_32BITF|GU_TRANSFORM_2D, count, 0, verts);
sceGuEnable(GU_TEXTURE_2D);
} else {
const VertTCV *verts = (VertTCV *) (gpumem + cmd->data.draw.first);
TextureActivate(cmd->data.draw.texture);
/* Need to force refresh of blending mode, probably something to FIXME */
PSP_SetBlendMode(renderer, SDL_BLENDMODE_INVALID);
PSP_SetBlendMode(renderer, cmd->data.draw.blend);
sceGuDrawArray(GU_TRIANGLES, GU_TEXTURE_32BITF|GU_COLOR_8888|GU_VERTEX_32BITF|GU_TRANSFORM_2D, count, 0, verts);
}
break;
}
case SDL_RENDERCMD_NO_OP:
break;
}
cmd = cmd->next;
}
return 0;
}
static int
PSP_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 pixel_format, void * pixels, int pitch)
{
return SDL_Unsupported();
}
static void
PSP_RenderPresent(SDL_Renderer * renderer)
{
PSP_RenderData *data = (PSP_RenderData *) renderer->driverdata;
if(!data->displayListAvail)
return;
data->displayListAvail = SDL_FALSE;
sceGuFinish();
sceGuSync(0,0);
if ((data->vsync) && (data->vblank_not_reached))
sceDisplayWaitVblankStart();
data->vblank_not_reached = SDL_TRUE;
data->backbuffer = data->frontbuffer;
data->frontbuffer = vabsptr(sceGuSwapBuffers());
}
static void
PSP_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
PSP_RenderData *renderdata = (PSP_RenderData *) renderer->driverdata;
PSP_TextureData *psp_texture = (PSP_TextureData *) texture->driverdata;
if (renderdata == 0)
return;
if(psp_texture == 0)
return;
SDL_free(psp_texture->data);
SDL_free(psp_texture);
texture->driverdata = NULL;
}
static void
PSP_DestroyRenderer(SDL_Renderer * renderer)
{
PSP_RenderData *data = (PSP_RenderData *) renderer->driverdata;
if (data) {
if (!data->initialized)
return;
StartDrawing(renderer);
sceKernelDisableSubIntr(PSP_VBLANK_INT, 0);
sceKernelReleaseSubIntrHandler(PSP_VBLANK_INT,0);
sceDisplayWaitVblankStart();
sceGuDisplay(GU_FALSE);
sceGuTerm();
/* vfree(data->backbuffer); */
/* vfree(data->frontbuffer); */
data->initialized = SDL_FALSE;
data->displayListAvail = SDL_FALSE;
SDL_free(data);
}
SDL_free(renderer);
}
static int
PSP_SetVSync(SDL_Renderer * renderer, const int vsync)
{
PSP_RenderData *data = renderer->driverdata;
data->vsync = vsync;
return 0;
}
SDL_Renderer *
PSP_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_Renderer *renderer;
PSP_RenderData *data;
int pixelformat;
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
data = (PSP_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
PSP_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
renderer->WindowEvent = PSP_WindowEvent;
renderer->CreateTexture = PSP_CreateTexture;
renderer->UpdateTexture = PSP_UpdateTexture;
renderer->LockTexture = PSP_LockTexture;
renderer->UnlockTexture = PSP_UnlockTexture;
renderer->SetTextureScaleMode = PSP_SetTextureScaleMode;
renderer->SetRenderTarget = PSP_SetRenderTarget;
renderer->QueueSetViewport = PSP_QueueSetViewport;
renderer->QueueSetDrawColor = PSP_QueueSetViewport; /* SetViewport and SetDrawColor are (currently) no-ops. */
renderer->QueueDrawPoints = PSP_QueueDrawPoints;
renderer->QueueDrawLines = PSP_QueueDrawPoints; /* lines and points queue vertices the same way. */
renderer->QueueGeometry = PSP_QueueGeometry;
renderer->QueueFillRects = PSP_QueueFillRects;
renderer->QueueCopy = PSP_QueueCopy;
renderer->QueueCopyEx = PSP_QueueCopyEx;
renderer->RunCommandQueue = PSP_RunCommandQueue;
renderer->RenderReadPixels = PSP_RenderReadPixels;
renderer->RenderPresent = PSP_RenderPresent;
renderer->DestroyTexture = PSP_DestroyTexture;
renderer->DestroyRenderer = PSP_DestroyRenderer;
renderer->SetVSync = PSP_SetVSync;
renderer->info = PSP_RenderDriver.info;
renderer->info.flags = (SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE);
renderer->driverdata = data;
renderer->window = window;
if (data->initialized != SDL_FALSE)
return 0;
data->initialized = SDL_TRUE;
if (flags & SDL_RENDERER_PRESENTVSYNC) {
data->vsync = SDL_TRUE;
} else {
data->vsync = SDL_FALSE;
}
pixelformat=PixelFormatToPSPFMT(SDL_GetWindowPixelFormat(window));
switch(pixelformat)
{
case GU_PSM_4444:
case GU_PSM_5650:
case GU_PSM_5551:
data->frontbuffer = (unsigned int *)(PSP_FRAME_BUFFER_SIZE<<1);
data->backbuffer = (unsigned int *)(0);
data->bpp = 2;
data->psm = pixelformat;
break;
default:
data->frontbuffer = (unsigned int *)(PSP_FRAME_BUFFER_SIZE<<2);
data->backbuffer = (unsigned int *)(0);
data->bpp = 4;
data->psm = GU_PSM_8888;
break;
}
sceGuInit();
/* setup GU */
sceGuStart(GU_DIRECT, DisplayList);
sceGuDrawBuffer(data->psm, data->frontbuffer, PSP_FRAME_BUFFER_WIDTH);
sceGuDispBuffer(PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT, data->backbuffer, PSP_FRAME_BUFFER_WIDTH);
sceGuOffset(2048 - (PSP_SCREEN_WIDTH>>1), 2048 - (PSP_SCREEN_HEIGHT>>1));
sceGuViewport(2048, 2048, PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT);
data->frontbuffer = vabsptr(data->frontbuffer);
data->backbuffer = vabsptr(data->backbuffer);
/* Scissoring */
sceGuScissor(0, 0, PSP_SCREEN_WIDTH, PSP_SCREEN_HEIGHT);
sceGuEnable(GU_SCISSOR_TEST);
/* Backface culling */
/*
FIXME: Culling probably un-needed ? It can conflict with SDL_RENDERCMD_GEOMETRY
sceGuFrontFace(GU_CCW);
sceGuEnable(GU_CULL_FACE);
*/
/* Texturing */
sceGuEnable(GU_TEXTURE_2D);
sceGuShadeModel(GU_SMOOTH);
sceGuTexWrap(GU_REPEAT, GU_REPEAT);
/* Blending */
sceGuEnable(GU_BLEND);
sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0);
sceGuTexFilter(GU_LINEAR,GU_LINEAR);
sceGuFinish();
sceGuSync(0,0);
sceDisplayWaitVblankStartCB();
sceGuDisplay(GU_TRUE);
/* Improve performance when VSYC is enabled and it is not reaching the 60 FPS */
data->vblank_not_reached = SDL_TRUE;
sceKernelRegisterSubIntrHandler(PSP_VBLANK_INT, 0, psp_on_vblank, data);
sceKernelEnableSubIntr(PSP_VBLANK_INT, 0);
return renderer;
}
SDL_RenderDriver PSP_RenderDriver = {
.CreateRenderer = PSP_CreateRenderer,
.info = {
.name = "PSP",
.flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE,
.num_texture_formats = 4,
.texture_formats = { [0] = SDL_PIXELFORMAT_BGR565,
[1] = SDL_PIXELFORMAT_ABGR1555,
[2] = SDL_PIXELFORMAT_ABGR4444,
[3] = SDL_PIXELFORMAT_ABGR8888,
},
.max_texture_width = 512,
.max_texture_height = 512,
}
};
#endif /* SDL_VIDEO_RENDER_PSP */
/* vi: set ts=4 sw=4 expandtab: */
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