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RetroArch/360/xdk360_video.cpp

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/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
* Copyright (C) 2010-2011 - Hans-Kristian Arntzen
*
* Some code herein may be based on code found in BSNES.
*
* SSNES is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with SSNES.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <xtl.h>
#include "../driver.h"
#include "xdk360_video.h"
#include "../general.h"
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
static const char* g_strPixelShaderProgram =
" sampler2D tex : register(s0); "
" struct PS_IN "
" { "
" float2 coord : TEXCOORD0; "
" }; "
" "
" float4 main(PS_IN input) : COLOR "
" { "
" return tex2D(tex, input.coord); "
" } ";
static const char* g_strVertexShaderProgram =
" struct VS_IN "
" "
" { "
" float2 pos : POSITION; "
" float2 coord : TEXCOORD0; "
" }; "
" "
" struct VS_OUT "
" { "
" float4 pos : POSITION; "
" float2 coord : TEXCOORD0; "
" }; "
" "
" VS_OUT main(VS_IN input) "
" { "
" VS_OUT output; "
" output.pos = float4(input.pos, 0.0, 1.0); "
" output.coord = input.coord; "
" return output; "
" } ";
typedef struct DrawVerticeFormats
{
float x, y;
float u, v;
} DrawVerticeFormats;
static bool g_quitting;
unsigned g_frame_count;
void *g_d3d;
typedef struct xdk360_video
{
IDirect3D9* xdk360_device;
IDirect3DDevice9* xdk360_render_device;
IDirect3DVertexShader9 *pVertexShader;
IDirect3DPixelShader9* pPixelShader;
IDirect3DVertexDeclaration9* pVertexDecl;
IDirect3DVertexBuffer9* vertex_buf;
IDirect3DTexture9* lpTexture;
unsigned last_width, last_height;
} xdk360_video_t;
static void xdk360_gfx_free(void * data)
{
if (g_d3d)
return;
xdk360_video_t *vid = (xdk360_video_t*)data;
if (!vid)
return;
vid->lpTexture->Release();
vid->vertex_buf->Release();
vid->pVertexDecl->Release();
vid->pPixelShader->Release();
vid->pVertexShader->Release();
vid->xdk360_render_device->Release();
vid->xdk360_device->Release();
free(vid);
}
static void *xdk360_gfx_init(const video_info_t *video, const input_driver_t **input, void **input_data)
{
if (g_d3d)
return g_d3d;
xdk360_video_t *vid = (xdk360_video_t*)calloc(1, sizeof(xdk360_video_t));
if (!vid)
return NULL;
vid->xdk360_device = Direct3DCreate9(D3D_SDK_VERSION);
if (!vid->xdk360_device)
{
free(vid);
return NULL;
}
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.BackBufferWidth = 1280;
d3dpp.BackBufferHeight = 720;
d3dpp.BackBufferFormat = (D3DFORMAT)MAKESRGBFMT(D3DFMT_A8R8G8B8);
d3dpp.FrontBufferFormat = (D3DFORMAT)MAKESRGBFMT(D3DFMT_LE_X8R8G8B8);
d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
d3dpp.MultiSampleQuality = 0;
d3dpp.BackBufferCount = 2;
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
vid->xdk360_device->CreateDevice(0, D3DDEVTYPE_HAL, NULL, D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp,
&vid->xdk360_render_device);
ID3DXBuffer* pShaderCodeV = NULL;
ID3DXBuffer* pShaderCodeP = NULL;
ID3DXBuffer* pErrorMsg = NULL;
HRESULT hr = D3DXCompileShader(g_strVertexShaderProgram, (UINT)strlen(g_strVertexShaderProgram),
NULL, NULL, "main", "vs_2_0", 0, &pShaderCodeV, &pErrorMsg, NULL);
if (SUCCEEDED(hr))
{
hr = D3DXCompileShader(g_strPixelShaderProgram, (UINT)strlen(g_strPixelShaderProgram),
NULL, NULL, "main", "ps_2_0", 0, &pShaderCodeP, &pErrorMsg, NULL);
}
if (FAILED(hr))
{
OutputDebugString(pErrorMsg ? (char*)pErrorMsg->GetBufferPointer() : "");
vid->xdk360_render_device->Release();
vid->xdk360_device->Release();
free(vid);
return NULL;
}
vid->xdk360_render_device->CreateVertexShader((const DWORD*)pShaderCodeV->GetBufferPointer(), &vid->pVertexShader);
vid->xdk360_render_device->CreatePixelShader((const DWORD*)pShaderCodeP->GetBufferPointer(), &vid->pPixelShader);
pShaderCodeV->Release();
pShaderCodeP->Release();
vid->xdk360_render_device->CreateTexture(512, 512, 1, 0, D3DFMT_LIN_X1R5G5B5,
0, &vid->lpTexture, NULL);
D3DLOCKED_RECT d3dlr;
if (SUCCEEDED(vid->lpTexture->LockRect(0, &d3dlr, NULL, D3DLOCK_NOSYSLOCK)))
{
memset(d3dlr.pBits, 0, 512 * d3dlr.Pitch);
vid->lpTexture->UnlockRect(0);
}
vid->last_width = 512;
vid->last_height = 512;
vid->xdk360_render_device->CreateVertexBuffer(4 * sizeof(DrawVerticeFormats), 0,
0, 0, &vid->vertex_buf, NULL);
static const DrawVerticeFormats init_verts[] = {
{ -1.0f, -1.0f, 0.0f, 1.0f },
{ 1.0f, -1.0f, 1.0f, 1.0f },
{ -1.0f, 1.0f, 0.0f, 0.0f },
{ 1.0f, 1.0f, 1.0f, 0.0f },
};
void *verts_ptr;
vid->vertex_buf->Lock(0, 0, &verts_ptr, 0);
memcpy(verts_ptr, init_verts, sizeof(init_verts));
vid->vertex_buf->Unlock();
static const D3DVERTEXELEMENT9 VertexElements[] =
{
{ 0, 0 * sizeof(float), D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_POSITION, 0 },
{ 0, 2 * sizeof(float), D3DDECLTYPE_FLOAT2, D3DDECLMETHOD_DEFAULT, D3DDECLUSAGE_TEXCOORD, 0 },
D3DDECL_END()
};
vid->xdk360_render_device->CreateVertexDeclaration(VertexElements, &vid->pVertexDecl);
vid->xdk360_render_device->Clear(0, NULL, D3DCLEAR_TARGET,
0xff000000, 1.0f, 0);
vid->xdk360_render_device->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
vid->xdk360_render_device->SetRenderState(D3DRS_ZENABLE, FALSE);
D3DVIEWPORT9 vp = {0};
vp.Width = 1280;
vp.Height = 720;
vp.MinZ = 0.0f;
vp.MaxZ = 1.0f;
vid->xdk360_render_device->SetViewport(&vp);
return vid;
}
static bool xdk360_gfx_frame(void *data, const void *frame,
unsigned width, unsigned height, unsigned pitch, const char *msg)
{
xdk360_video_t *vid = (xdk360_video_t*)data;
g_frame_count++;
vid->xdk360_render_device->Clear(0, NULL, D3DCLEAR_TARGET,
0xff000000, 1.0f, 0);
if (vid->last_width != width || vid->last_height != height)
{
D3DLOCKED_RECT d3dlr;
if (SUCCEEDED(vid->lpTexture->LockRect(0, &d3dlr, NULL, D3DLOCK_NOSYSLOCK)))
{
memset(d3dlr.pBits, 0, 512 * d3dlr.Pitch);
vid->lpTexture->UnlockRect(0);
}
float tex_w = width / 512.0f;
float tex_h = height / 512.0f;
const DrawVerticeFormats verts[] = {
{ -1.0f, -1.0f, 0.0f, tex_h },
{ 1.0f, -1.0f, tex_w, tex_h },
{ -1.0f, 1.0f, 0.0f, 0.0f },
{ 1.0f, 1.0f, tex_w, 0.0f },
};
void *verts_ptr;
vid->vertex_buf->Lock(0, 0, &verts_ptr, 0);
memcpy(verts_ptr, verts, sizeof(verts));
vid->vertex_buf->Unlock();
vid->last_width = width;
vid->last_height = height;
}
D3DLOCKED_RECT d3dlr;
if (SUCCEEDED(vid->lpTexture->LockRect(0, &d3dlr, NULL, D3DLOCK_NOSYSLOCK)))
{
for (unsigned y = 0; y < height; y++)
{
const uint8_t *in = (const uint8_t*)frame + y * pitch;
uint8_t *out = (uint8_t*)d3dlr.pBits + y * d3dlr.Pitch;
memcpy(out, in, width * sizeof(uint16_t));
}
vid->lpTexture->UnlockRect(0);
}
vid->xdk360_render_device->SetTexture(0, vid->lpTexture);
vid->xdk360_render_device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
vid->xdk360_render_device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
vid->xdk360_render_device->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_BORDER);
vid->xdk360_render_device->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_BORDER);
vid->xdk360_render_device->SetVertexShader(vid->pVertexShader);
vid->xdk360_render_device->SetPixelShader(vid->pPixelShader);
vid->xdk360_render_device->SetVertexDeclaration(vid->pVertexDecl);
vid->xdk360_render_device->SetStreamSource(0, vid->vertex_buf, 0, sizeof(DrawVerticeFormats));
vid->xdk360_render_device->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
vid->xdk360_render_device->Present(NULL, NULL, NULL, NULL);
return true;
}
static void xdk360_gfx_set_nonblock_state(void *data, bool state)
{
(void)data;
(void)state;
}
static bool xdk360_gfx_alive(void *data)
{
(void)data;
return !g_quitting;
}
static bool xdk360_gfx_focus(void *data)
{
(void)data;
return true;
}
// 360 needs a working graphics stack before SSNESeven starts.
// To deal with this main.c,
// the top level module owns the instance, and is created beforehand.
// When SSNES gets around to init it, it is already allocated.
// When SSNES wants to free it, it is ignored.
void xdk360_video_init(void)
{
video_info_t video_info = {0};
// Might have to supply correct values here.
video_info.vsync = true;
video_info.force_aspect = false;
video_info.smooth = true;
video_info.input_scale = 2;
g_d3d = xdk360_gfx_init(&video_info, NULL, NULL);
}
void xdk360_video_deinit(void)
{
void *data = g_d3d;
g_d3d = NULL;
xdk360_gfx_free(data);
}
const video_driver_t video_xdk360 = {
xdk360_gfx_init,
xdk360_gfx_frame,
xdk360_gfx_set_nonblock_state,
xdk360_gfx_alive,
xdk360_gfx_focus,
NULL,
xdk360_gfx_free,
"xdk360"
};
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