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gl_backend.cpp
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gl_backend.cpp
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#include <math.h>
#include <map>
#include <memalign.h>
#include <algorithm>
#include <glsm/glsm.h>
#include <glsm/glsmsym.h>
#ifdef __SSE4_1__
#include <xmmintrin.h>
#endif
#include "gl_backend.h"
#include "../rend.h"
#include "../../libretro/libretro.h"
#include "../../hw/pvr/pvr.h"
#include "../../hw/pvr/tr.h"
#include "../../hw/pvr/pixel_convert.h"
#define VERTEX_POS_ARRAY 0
#define VERTEX_COL_BASE_ARRAY 1
#define VERTEX_COL_OFFS_ARRAY 2
#define VERTEX_UV_ARRAY 3
extern retro_environment_t environ_cb;
extern bool fog_needs_update;
extern bool enable_rtt;
bool KillTex=false;
struct modvol_shader_type
{
GLuint program;
GLuint scale;
GLuint depth_scale;
GLuint sp_ShaderColor;
};
struct PipelineShader
{
GLuint program;
GLuint scale;
GLuint depth_scale;
GLuint pp_ClipTest;
GLuint cp_AlphaTestValue;
GLuint sp_FOG_COL_RAM;
GLuint sp_FOG_COL_VERT;
GLuint sp_FOG_DENSITY;
GLuint sp_LOG_FOG_COEFS;
u32 cp_AlphaTest;
s32 pp_ClipTestMode;
u32 pp_Texture;
u32 pp_UseAlpha;
u32 pp_IgnoreTexA;
u32 pp_ShadInstr;
u32 pp_Offset;
u32 pp_FogCtrl;
};
struct ShaderUniforms_t
{
float PT_ALPHA;
float scale_coefs[4];
float depth_coefs[4];
float fog_den_float;
float ps_FOG_COL_RAM[3];
float ps_FOG_COL_VERT[3];
float fog_coefs[2];
} ShaderUniforms;
struct vbo_type
{
GLuint geometry;
GLuint modvols;
GLuint idxs;
GLuint idxs2;
};
vbo_type vbo;
modvol_shader_type modvol_shader;
PipelineShader program_table[768*2];
static float fog_coefs[]={0,0};
/*
Drawing and related state management
Takes vertex, textures and renders to the currently set up target
*/
const static u32 CullMode[]=
{
GL_NONE, //0 No culling No culling
GL_NONE, //1 Cull if Small Cull if ( |det| < fpu_cull_val )
GL_FRONT, //2 Cull if Negative Cull if ( |det| < 0 ) or ( |det| < fpu_cull_val )
GL_BACK, //3 Cull if Positive Cull if ( |det| > 0 ) or ( |det| < fpu_cull_val )
};
const static u32 Zfunction[]=
{
GL_NEVER, //GL_NEVER, //0 Never
GL_LESS, //GL_LESS/*EQUAL*/, //1 Less
GL_EQUAL, //GL_EQUAL, //2 Equal
GL_LEQUAL, //GL_LEQUAL, //3 Less Or Equal
GL_GREATER, //GL_GREATER/*EQUAL*/, //4 Greater
GL_NOTEQUAL, //GL_NOTEQUAL, //5 Not Equal
GL_GEQUAL, //GL_GEQUAL, //6 Greater Or Equal
GL_ALWAYS, //GL_ALWAYS, //7 Always
};
/*
0 Zero (0, 0, 0, 0)
1 One (1, 1, 1, 1)
2 Dither Color (OR, OG, OB, OA)
3 Inverse Dither Color (1-OR, 1-OG, 1-OB, 1-OA)
4 SRC Alpha (SA, SA, SA, SA)
5 Inverse SRC Alpha (1-SA, 1-SA, 1-SA, 1-SA)
6 DST Alpha (DA, DA, DA, DA)
7 Inverse DST Alpha (1-DA, 1-DA, 1-DA, 1-DA)
*/
const static u32 DstBlendGL[] =
{
GL_ZERO,
GL_ONE,
GL_SRC_COLOR,
GL_ONE_MINUS_SRC_COLOR,
GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA,
GL_DST_ALPHA,
GL_ONE_MINUS_DST_ALPHA
};
const static u32 SrcBlendGL[] =
{
GL_ZERO,
GL_ONE,
GL_DST_COLOR,
GL_ONE_MINUS_DST_COLOR,
GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA,
GL_DST_ALPHA,
GL_ONE_MINUS_DST_ALPHA
};
Vertex* vtx_sort_base;
struct IndexTrig
{
u16 id[3];
u16 pid;
f32 z;
};
struct SortTrigDrawParam
{
PolyParam* ppid;
u16 first;
u16 count;
};
static vector<SortTrigDrawParam> pidx_sort;
PipelineShader* CurrentShader;
static u32 gcflip;
static struct
{
TSP tsp;
//TCW tcw;
PCW pcw;
ISP_TSP isp;
u32 clipmode;
//u32 texture_enabled;
u32 stencil_modvol_on;
u32 program;
GLuint texture;
void Reset(const PolyParam* gp)
{
program=~0;
texture=~0;
tsp.full = ~gp->tsp.full;
//tcw.full = ~gp->tcw.full;
pcw.full = ~gp->pcw.full;
isp.full = ~gp->isp.full;
clipmode=0xFFFFFFFF;
// texture_enabled=~gp->pcw.Texture;
stencil_modvol_on=false;
}
} cache;
typedef void TexConvFP(PixelBuffer* pb,u8* p_in,u32 Width,u32 Height);
struct PvrTexInfo
{
const char* name;
int bpp; //4/8 for pal. 16 for uv, argb
GLuint type;
TexConvFP *PL;
TexConvFP *TW;
TexConvFP *VQ;
};
PvrTexInfo format[8]=
{
{"1555", 16,GL_UNSIGNED_SHORT_5_5_5_1, &tex1555_PL,&tex1555_TW,&tex1555_VQ}, //1555
{"565", 16,GL_UNSIGNED_SHORT_5_6_5, &tex565_PL,&tex565_TW,&tex565_VQ}, //565
{"4444", 16,GL_UNSIGNED_SHORT_4_4_4_4, &tex4444_PL,&tex4444_TW,&tex4444_VQ}, //4444
{"yuv", 16,GL_UNSIGNED_SHORT_5_6_5, &texYUV422_PL,&texYUV422_TW,&texYUV422_VQ}, //yuv
{"UNSUPPORTED BUMP MAPPED POLY", 16,GL_UNSIGNED_SHORT_4_4_4_4,&texBMP_PL,&texBMP_TW,&texBMP_VQ}, //bump_ns
{"pal4", 4,0,0,texPAL4_TW,0}, //pal4
{"pla8", 8,0,0,texPAL8_TW,0}, //pal8
{"ns/1555", 0}, //ns, 1555
};
const u32 compressed_mipmap_offsets[8] =
{
0x00006, /* 8 x 8*/
0x00016, /* 16 x 16*/
0x00056, /* 32 x 32 */
0x00156, /* 64 x 64 */
0x00556, /* 128 x 128*/
0x01556, /* 256 x 256*/
0x05556, /* 512 x 512 */
0x15556 /* 1024 x 1024 */
};
const GLuint PAL_TYPE[4]=
{GL_UNSIGNED_SHORT_5_5_5_1,GL_UNSIGNED_SHORT_5_6_5,GL_UNSIGNED_SHORT_4_4_4_4,GL_UNSIGNED_SHORT_4_4_4_4};
u16 temp_tex_buffer[1024*1024];
extern u32 decoded_colors[3][65536];
struct FBT
{
u32 TexAddr;
GLuint depthb,stencilb;
GLuint tex;
GLuint fbo;
};
FBT fb_rtt;
/* Texture Cache */
struct TextureCacheData
{
TSP tsp; /* PowerVR texture parameters */
TCW tcw;
GLuint texID; /* GL texture ID */
u16* pData;
int tex_type;
u32 Lookups;
/* decoded texture info */
u32 sa; /* pixel data start address in VRAM (might be offset for mipmaps/etc) */
u32 sa_tex; /* texture data start address in VRAM */
u32 w,h; /* Width & height of the texture */
u32 size; /* Size, in bytes, in VRAM */
PvrTexInfo *tex;
TexConvFP *texconv;
u32 dirty;
vram_block* lock_block;
u32 Updates;
/* Used for palette updates */
u32 pal_local_rev; /* Local palette rev */
u32* pal_table_rev; /* Table palette rev pointer */
u32 indirect_color_ptr; /* Palette color table index for paletted texture */
/* VQ quantizers table for VQ texture.
* A texture can't be both VQ and PAL (paletted) at the same time */
//Create GL texture from tsp/tcw
void Create(bool isGL)
{
texID = 0;
if (isGL)
glGenTextures(1, &texID);
/* Reset state info */
pData = 0;
tex_type = 0;
Lookups = 0;
Updates = 0;
dirty = FrameCount;
lock_block = 0;
/* Decode info from TSP/TCW into the texture struct */
tex = &format[tcw.PixelFmt==7?0:tcw.PixelFmt]; /* texture format table entry */
sa_tex = (tcw.TexAddr<<3) & VRAM_MASK; /* texture start address */
sa = sa_tex; /* data texture start address (modified for MIPs, as needed) */
w = 8 << tsp.TexU; /* texture width */
h = 8 << tsp.TexV; /* texture height */
if (texID)
{
/* Bind texture to set modes */
glBindTexture(GL_TEXTURE_2D, texID);
/* Set texture repeat mode */
if (tsp.ClampU)
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
else
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, tsp.FlipU ? GL_MIRRORED_REPEAT : GL_REPEAT);
if (tsp.ClampV)
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
else
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, tsp.FlipV ? GL_MIRRORED_REPEAT : GL_REPEAT);
#ifdef HAVE_OPENGLES
glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
#endif
/* Set texture filter mode */
if (tsp.FilterMode == 0)
{
/* Disable filtering, mipmaps */
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
}
else
{
/* Bilinear filtering */
/* PowerVR supports also trilinear via two passes, but we ignore that for now */
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,
(tcw.MipMapped && settings.rend.UseMipmaps)?GL_LINEAR_MIPMAP_NEAREST:GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
}
}
pal_table_rev = 0;
/* PAL texture */
switch (tex->bpp)
{
case 4:
pal_table_rev=&pal_rev_16[tcw.PalSelect];
indirect_color_ptr=tcw.PalSelect<<4;
break;
case 8:
pal_table_rev=&pal_rev_256[tcw.PalSelect>>4];
indirect_color_ptr=(tcw.PalSelect>>4)<<8;
break;
}
/* VQ table (if VQ texture) */
if (tcw.VQ_Comp)
indirect_color_ptr = sa;
texconv = 0;
/* Convert a PVR texture into OpenGL */
switch (tcw.PixelFmt)
{
case TA_PIXEL_1555: /* ARGB1555 - value: 1 bit; RGB values: 5 bits each */
case TA_PIXEL_RESERVED: /* RESERVED1 - Regarded as 1555 */
case TA_PIXEL_565: /* RGB565 - R value: 5 bits; G value: 6 bits; B value: 5 bits */
case TA_PIXEL_4444: /* ARGB4444 - value: 4 bits; RGB values: 4 bits each */
case TA_PIXEL_YUV422: /* YUV422 - 32 bits per 2 pixels; YUYV values: 8 bits each */
case TA_PIXEL_BUMPMAP: /* BUMPMAP - NOT_PROPERLY SUPPORTED- 16 bits/pixel; S value: 8 bits; R value: 8 bits */
case TA_PIXEL_4BPP: /* 4BPP - Palette texture with 4 bits/pixel */
case TA_PIXEL_8BPP: /* 8BPP - Palette texture with 8 bits/pixel */
if (tcw.ScanOrder && tex->PL)
{
int stride = w;
/* Planar textures support stride selection,
* mostly used for NPOT textures (videos). */
if (tcw.StrideSel)
stride = (TEXT_CONTROL&31)*32;
texconv = tex->PL; /* Call the format specific conversion code */
size = stride * h * tex->bpp/8; /* Calculate the size, in bytes, for the locking. */
}
else
{
size = w * h;
if (tcw.VQ_Comp)
{
indirect_color_ptr = sa;
if (tcw.MipMapped)
sa += compressed_mipmap_offsets[tsp.TexU];
texconv = tex->VQ;
}
else
{
if (tcw.MipMapped)
sa += compressed_mipmap_offsets[tsp.TexU]*tex->bpp/2;
texconv = tex->TW;
size *= tex->bpp;
}
size /= 8;
}
break;
default:
printf("Unhandled texture %d\n",tcw.PixelFmt);
size=w*h*2;
memset(temp_tex_buffer,0xFFFFFFFF,size);
break;
}
}
void Update(void)
{
PixelBuffer pbt;
GLuint textype;
u32 stride = w;
Updates++; /* texture state tracking stuff */
dirty = 0;
textype = tex->type;
if (pal_table_rev)
{
textype = PAL_TYPE[PAL_RAM_CTRL&3];
pal_local_rev = *pal_table_rev; /* make sure to update the local rev,
so it won't have to redo the texture */
}
palette_index = indirect_color_ptr; /* might be used if paletted texture */
vq_codebook = (u8*)&vram.data[indirect_color_ptr]; /* might be used if VQ texture */
//texture conversion work
pbt.p_buffer_start = pbt.p_current_line=temp_tex_buffer;
pbt.pixels_per_line=w;
if (tcw.StrideSel && tcw.ScanOrder && tex->PL)
stride = (TEXT_CONTROL&31)*32; //I think this needs +1 ?
if(texconv)
texconv(&pbt,(u8*)&vram.data[sa], stride, h);
else
{
/* fill it in with a temporary color. */
printf("UNHANDLED TEXTURE\n");
memset(temp_tex_buffer,0xF88F8F7F,w*h*2);
}
/* lock the texture to detect changes in it. */
lock_block = libCore_vramlock_Lock(sa_tex,sa+size-1,this);
if (texID)
{
glBindTexture(GL_TEXTURE_2D, texID);
GLuint comps=textype==GL_UNSIGNED_SHORT_5_6_5?GL_RGB:GL_RGBA;
glTexImage2D(GL_TEXTURE_2D, 0,comps , w, h, 0, comps, textype, temp_tex_buffer);
if (tcw.MipMapped && settings.rend.UseMipmaps)
glGenerateMipmap(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
}
else
{
switch (textype)
{
case GL_UNSIGNED_SHORT_5_6_5:
tex_type = 0;
break;
case GL_UNSIGNED_SHORT_5_5_5_1:
tex_type = 1;
break;
case GL_UNSIGNED_SHORT_4_4_4_4:
tex_type = 2;
break;
}
if (pData)
{
#ifdef __SSE4_1__
_mm_free(pData);
#else
memalign_free(pData);
#endif
}
#ifdef __SSE4_1__
pData = (u16*)_mm_malloc(w * h * 16, 16);
#else
pData = (u16*)memalign_alloc(16, w * h * 16);
#endif
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
u32* data = (u32*)&pData[(x + y*w) * 8];
data[0] = decoded_colors[tex_type][temp_tex_buffer[(x + 1) % w + (y + 1) % h * w]];
data[1] = decoded_colors[tex_type][temp_tex_buffer[(x + 0) % w + (y + 1) % h * w]];
data[2] = decoded_colors[tex_type][temp_tex_buffer[(x + 1) % w + (y + 0) % h * w]];
data[3] = decoded_colors[tex_type][temp_tex_buffer[(x + 0) % w + (y + 0) % h * w]];
}
}
}
}
/* true if : dirty or paletted texture and revs don't match */
bool NeedsUpdate()
{
return (dirty) || (pal_table_rev!=0 && *pal_table_rev!=pal_local_rev);
}
void Delete()
{
if (pData)
#ifdef __SSE4_1__
_mm_free(pData);
#else
memalign_free(pData);
#endif
pData = 0;
if (texID)
glDeleteTextures(1, &texID);
texID = 0;
if (lock_block)
libCore_vramlock_Unlock_block(lock_block);
lock_block=0;
}
};
float fb_scale_x = 0.0f;
float fb_scale_y = 0.0f;
#define attr "attribute"
#define vary "varying"
#define FRAGCOL "gl_FragColor"
#define TEXLOOKUP "texture2D"
#ifdef HAVE_OPENGLES
#define HIGHP "highp"
#define MEDIUMP "mediump"
#define LOWP "lowp"
#else
#define HIGHP
#define MEDIUMP
#define LOWP
#endif
//Fragment and vertex shaders code
//pretty much 1:1 copy of the d3d ones for now
const char* VertexShaderSource =
#ifndef HAVE_OPENGLES
"#version 120 \n"
#endif
"\
/* Vertex constants*/ \n\
uniform " HIGHP " vec4 scale; \n\
uniform " HIGHP " vec4 depth_scale; \n\
uniform " HIGHP " float sp_FOG_DENSITY; \n\
/* Vertex input */ \n\
" attr " " HIGHP " vec4 in_pos; \n\
" attr " " LOWP " vec4 in_base; \n\
" attr " " LOWP " vec4 in_offs; \n\
" attr " " MEDIUMP " vec2 in_uv; \n\
/* output */ \n\
" vary " " LOWP " vec4 vtx_base; \n\
" vary " " LOWP " vec4 vtx_offs; \n\
" vary " " MEDIUMP " vec2 vtx_uv; \n\
" vary " " HIGHP " vec3 vtx_xyz; \n\
void main() \n\
{ \n\
vtx_base=in_base; \n\
vtx_offs=in_offs; \n\
vtx_uv=in_uv; \n\
vec4 vpos=in_pos; \n\
vtx_xyz.xy = vpos.xy; \n\
vtx_xyz.z = vpos.z*sp_FOG_DENSITY; \n\
vpos.w=1.0/vpos.z; \n\
vpos.xy=vpos.xy*scale.xy-scale.zw; \n\
vpos.xy*=vpos.w; \n\
vpos.z=depth_scale.x+depth_scale.y*vpos.w; \n\
gl_Position = vpos; \n\
}";
const char* PixelPipelineShader =
#ifndef HAVE_OPENGLES
"#version 120 \n"
#endif
"\
\
#define cp_AlphaTest %d \n\
#define pp_ClipTestMode %d.0 \n\
#define pp_UseAlpha %d \n\
#define pp_Texture %d \n\
#define pp_IgnoreTexA %d \n\
#define pp_ShadInstr %d \n\
#define pp_Offset %d \n\
#define pp_FogCtrl %d \n\
/* Shader program params*/ \n\
/* gles has no alpha test stage, so its emulated on the shader */ \n\
uniform " LOWP " float cp_AlphaTestValue; \n\
uniform " LOWP " vec4 pp_ClipTest; \n\
uniform " LOWP " vec3 sp_FOG_COL_RAM,sp_FOG_COL_VERT; \n\
uniform " HIGHP " vec2 sp_LOG_FOG_COEFS; \n\
uniform sampler2D tex,fog_table; \n\
/* Vertex input*/ \n\
" vary " " LOWP " vec4 vtx_base; \n\
" vary " " LOWP " vec4 vtx_offs; \n\
" vary " " MEDIUMP " vec2 vtx_uv; \n\
" vary " " HIGHP " vec3 vtx_xyz; \n\
" LOWP " float fog_mode2(" HIGHP " float val) \n\
{ \n\
" HIGHP " float fog_idx=clamp(val,0.0,127.99); \n\
return clamp(sp_LOG_FOG_COEFS.y*log2(fog_idx)+sp_LOG_FOG_COEFS.x,0.001,1.0); //the clamp is required due to yet another bug !\n\
} \n\
void main() \n\
{ \n\
" LOWP " vec4 color=vtx_base; \n\
#if pp_UseAlpha==0 \n\
color.a=1.0; \n\
#endif\n\
#if pp_FogCtrl==3 \n\
color=vec4(sp_FOG_COL_RAM.rgb,fog_mode2(vtx_xyz.z)); \n\
#endif\n\
#if pp_Texture==1 \n\
{ \n\
" LOWP " vec4 texcol=" TEXLOOKUP "(tex,vtx_uv); \n\
\n\
#if pp_IgnoreTexA==1 \n\
texcol.a=1.0; \n\
#endif\n\
\n\
#if pp_ShadInstr==0 \n\
{ \n\
color.rgb=texcol.rgb; \n\
color.a=texcol.a; \n\
} \n\
#endif\n\
#if pp_ShadInstr==1 \n\
{ \n\
color.rgb*=texcol.rgb; \n\
color.a=texcol.a; \n\
} \n\
#endif\n\
#if pp_ShadInstr==2 \n\
{ \n\
color.rgb=mix(color.rgb,texcol.rgb,texcol.a); \n\
} \n\
#endif\n\
#if pp_ShadInstr==3 \n\
{ \n\
color*=texcol; \n\
} \n\
#endif\n\
\n\
#if pp_Offset==1 \n\
{ \n\
color.rgb+=vtx_offs.rgb; \n\
if (pp_FogCtrl==1) \n\
color.rgb=mix(color.rgb,sp_FOG_COL_VERT.rgb,vtx_offs.a); \n\
} \n\
#endif\n\
} \n\
#endif\n\
#if pp_FogCtrl==0 \n\
{ \n\
color.rgb=mix(color.rgb,sp_FOG_COL_RAM.rgb,fog_mode2(vtx_xyz.z)); \n\
} \n\
#endif\n\
#if cp_AlphaTest == 1 \n\
if (cp_AlphaTestValue>color.a) discard;\n\
#endif \n\
//color.rgb=vec3(vtx_xyz.z/255.0);\n\
" FRAGCOL "=color; \n\
}";
const char* ModifierVolumeShader =
" \
uniform " LOWP " float sp_ShaderColor; \n\
/* Vertex input*/ \n\
void main() \n\
{ \n\
" FRAGCOL "=vec4(0.0, 0.0, 0.0, sp_ShaderColor); \n\
}";
static int gles_screen_width = 640;
static int gles_screen_height = 480;
static s32 SetTileClip(u32 val, bool set)
{
float csx=0,csy=0,cex=0,cey=0;
u32 clipmode=val>>28;
s32 clip_mode;
if (clipmode<2)
clip_mode=0; //always passes
else if (clipmode&1)
clip_mode=-1; //render stuff inside the region
else
clip_mode=1; //render stuff outside the region
csx=(float)(val&63);
cex=(float)((val>>6)&63);
csy=(float)((val>>12)&31);
cey=(float)((val>>17)&31);
csx=csx*32;
cex=cex*32 +32;
csy=csy*32;
cey=cey*32 +32;
if (csx==0 && csy==0 && cex==640 && cey==480)
return 0;
if (set)
glUniform4f(CurrentShader->pp_ClipTest,-csx,-csy,-cex,-cey);
return clip_mode;
}
static void SetCull(u32 CulliMode)
{
if (CullMode[CulliMode] == GL_NONE)
glDisable(GL_CULL_FACE);
else
{
glEnable(GL_CULL_FACE);
glCullFace(CullMode[CulliMode]); //GL_FRONT/GL_BACK, ...
}
}
static int GetProgramID(
u32 cp_AlphaTest,
u32 pp_ClipTestMode,
u32 pp_Texture,
u32 pp_UseAlpha,
u32 pp_IgnoreTexA,
u32 pp_ShadInstr,
u32 pp_Offset,
u32 pp_FogCtrl)
{
u32 rv=0;
rv|=pp_ClipTestMode;
rv<<=1; rv|=cp_AlphaTest;
rv<<=1; rv|=pp_Texture;
rv<<=1; rv|=pp_UseAlpha;
rv<<=1; rv|=pp_IgnoreTexA;
rv<<=2; rv|=pp_ShadInstr;
rv<<=1; rv|=pp_Offset;
rv<<=2; rv|=pp_FogCtrl;
return rv;
}
static GLuint gl_CompileShader(const char* shader,GLuint type)
{
GLint result;
GLint compile_log_len;
GLuint rv=glCreateShader(type);
glShaderSource(rv, 1,&shader, NULL);
glCompileShader(rv);
//lets see if it compiled ...
glGetShaderiv(rv, GL_COMPILE_STATUS, &result);
glGetShaderiv(rv, GL_INFO_LOG_LENGTH, &compile_log_len);
if (!result && compile_log_len>0)
{
if (compile_log_len==0)
compile_log_len=1;
char* compile_log=(char*)malloc(compile_log_len);
*compile_log=0;
glGetShaderInfoLog(rv, compile_log_len, &compile_log_len, compile_log);
printf("Shader: %s \n%s\n",result?"compiled!":"failed to compile",compile_log);
free(compile_log);
}
return rv;
}
static GLuint gl_CompileAndLink(const char* VertexShader, const char* FragmentShader)
{
GLint compile_log_len;
GLint result;
/* Create vertex/fragment shaders */
GLuint vs = gl_CompileShader(VertexShader ,GL_VERTEX_SHADER);
GLuint ps = gl_CompileShader(FragmentShader ,GL_FRAGMENT_SHADER);
GLuint program = glCreateProgram();
glAttachShader(program, vs);
glAttachShader(program, ps);
/* Bind vertex attribute to VBO inputs */
glBindAttribLocation(program, VERTEX_POS_ARRAY, "in_pos");
glBindAttribLocation(program, VERTEX_COL_BASE_ARRAY, "in_base");
glBindAttribLocation(program, VERTEX_COL_OFFS_ARRAY, "in_offs");
glBindAttribLocation(program, VERTEX_UV_ARRAY, "in_uv");
#ifndef HAVE_OPENGLES
glBindFragDataLocation(program, 0, "FragColor");
#endif
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &result);
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &compile_log_len);
if (!result && compile_log_len>0)
{
char *compile_log = NULL;
if (compile_log_len==0)
compile_log_len = 1;
compile_log_len += 1024;
compile_log = (char*)malloc(compile_log_len);
*compile_log = 0;
glGetProgramInfoLog(program, compile_log_len, &compile_log_len, compile_log);
printf("Shader linking: %s \n (%d bytes), - %s -\n",result?"linked":"failed to link", compile_log_len,compile_log);
free(compile_log);
die("shader compile fail\n");
}
glDeleteShader(vs);
glDeleteShader(ps);
glUseProgram(program);
verify(glIsProgram(program));
return program;
}
static void set_shader_uniforms(struct ShaderUniforms_t *uni, PipelineShader* s)
{
if (s->cp_AlphaTestValue!=-1)
glUniform1f(s->cp_AlphaTestValue, uni->PT_ALPHA);
if (s->scale!=-1)
glUniform4fv( s->scale, 1, uni->scale_coefs);
if (s->depth_scale!=-1)
glUniform4fv( s->depth_scale, 1, uni->depth_coefs);
if (s->sp_FOG_DENSITY!=-1)
glUniform1f( s->sp_FOG_DENSITY, uni->fog_den_float);
if (s->sp_FOG_COL_RAM!=-1)
glUniform3fv( s->sp_FOG_COL_RAM, 1, uni->ps_FOG_COL_RAM);
if (s->sp_FOG_COL_VERT!=-1)
glUniform3fv( s->sp_FOG_COL_VERT, 1, uni->ps_FOG_COL_VERT);
if (s->sp_LOG_FOG_COEFS!=-1)
glUniform2fv(s->sp_LOG_FOG_COEFS,1, uni->fog_coefs);
}
static bool CompilePipelineShader(void *data)
{
char pshader[8192];
PipelineShader *s = (PipelineShader*)data;
sprintf(pshader,PixelPipelineShader,
s->cp_AlphaTest,s->pp_ClipTestMode,s->pp_UseAlpha,
s->pp_Texture,s->pp_IgnoreTexA,s->pp_ShadInstr,s->pp_Offset,s->pp_FogCtrl);
s->program = gl_CompileAndLink(VertexShaderSource,pshader);
//setup texture 0 as the input for the shader
GLuint gu=glGetUniformLocation(s->program, "tex");
if (s->pp_Texture==1)
glUniform1i(gu,0);
//get the uniform locations
s->scale = glGetUniformLocation(s->program, "scale");
s->depth_scale = glGetUniformLocation(s->program, "depth_scale");
s->pp_ClipTest = glGetUniformLocation(s->program, "pp_ClipTest");
s->sp_FOG_DENSITY = glGetUniformLocation(s->program, "sp_FOG_DENSITY");
s->cp_AlphaTestValue = glGetUniformLocation(s->program, "cp_AlphaTestValue");
//FOG_COL_RAM,FOG_COL_VERT,FOG_DENSITY;
if (s->pp_FogCtrl==1 && s->pp_Texture==1)
s->sp_FOG_COL_VERT = glGetUniformLocation(s->program, "sp_FOG_COL_VERT");
else
s->sp_FOG_COL_VERT = -1;
if (s->pp_FogCtrl==0 || s->pp_FogCtrl==3)
{
s->sp_FOG_COL_RAM=glGetUniformLocation(s->program, "sp_FOG_COL_RAM");
s->sp_LOG_FOG_COEFS=glGetUniformLocation(s->program, "sp_LOG_FOG_COEFS");
}
else
{
s->sp_FOG_COL_RAM=-1;
s->sp_LOG_FOG_COEFS=-1;
}
set_shader_uniforms(&ShaderUniforms, s);
return glIsProgram(s->program)==GL_TRUE;
}
template <u32 Type, bool SortingEnabled>
static __forceinline void SetGPState(const PolyParam* gp, u32 cflip)
{
//force everything to be shadowed
const u32 stencil = (gp->pcw.Shadow!=0)?0x80:0;
/* Has to preserve cache_TSP/ISP
* Can freely use cache TCW */
int prog_id = GetProgramID(
(Type == TA_LIST_PUNCH_THROUGH) ? 1 : 0,
SetTileClip(gp->tileclip,false)+1,
gp->pcw.Texture,
gp->tsp.UseAlpha,
gp->tsp.IgnoreTexA,
gp->tsp.ShadInstr,
gp->pcw.Offset,
gp->tsp.FogCtrl);
CurrentShader = &program_table[prog_id];
if (CurrentShader->program == -1)
CompilePipelineShader(CurrentShader);
if (CurrentShader->program != cache.program)
{
cache.program = CurrentShader->program;
glUseProgram(CurrentShader->program);
SetTileClip(gp->tileclip,true);
}
if (cache.stencil_modvol_on!=stencil)
{
cache.stencil_modvol_on = stencil;
glStencilFunc(GL_ALWAYS, stencil, stencil);
}
if (gp->texid != cache.texture)
{
cache.texture=gp->texid;
if (gp->texid != -1)
glBindTexture(GL_TEXTURE_2D, gp->texid);
}
if (gp->tsp.full!=cache.tsp.full)
{
cache.tsp=gp->tsp;
if (Type==TA_LIST_TRANSLUCENT)
{
glBlendFunc(SrcBlendGL[gp->tsp.SrcInstr], DstBlendGL[gp->tsp.DstInstr]);
#ifdef WEIRD_SLOWNESS
//SGX seems to be super slow with discard enabled blended pixels
//can't cache this -- due to opengl shader api
bool clip_alpha_on_zero=gp->tsp.SrcInstr==4 && (gp->tsp.DstInstr==1 || gp->tsp.DstInstr==5);
glUniform1f(CurrentShader->cp_AlphaTestValue,clip_alpha_on_zero?(1/255.f):(-2.f));
#endif
}
}
//set cull mode !
//cflip is required when exploding triangles for triangle sorting
//gcflip is global clip flip, needed for when rendering to texture due to mirrored Y direction
SetCull(gp->isp.CullMode ^ cflip ^ gcflip);
if (gp->isp.full!= cache.isp.full)
{
GLboolean flag;
cache.isp.full = gp->isp.full;
/* Set Z mode, only if required */
if (!(Type == TA_LIST_PUNCH_THROUGH || (Type == TA_LIST_TRANSLUCENT && SortingEnabled)))
glDepthFunc(Zfunction[gp->isp.DepthMode]);
flag = !gp->isp.ZWriteDis;
if (SortingEnabled && settings.pvr.Emulation.AlphaSortMode == 0)
flag = GL_FALSE;
glDepthMask(flag);
}
}
template <u32 Type, bool SortingEnabled>
static void DrawList(const List<PolyParam>& gply)
{
PolyParam* params=gply.head();
int count=gply.used();
/* We want at least 1 PParam */
if (count==0)
return;
/* reset the cache state */
cache.Reset(params);