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ref: gl: psvita: add fog support; bump max verts to 32768

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fgsfds 2023-02-22 00:53:20 +01:00 committed by Alibek Omarov
parent 82cfd3ecc3
commit 89ec39821e
3 changed files with 97 additions and 40 deletions
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12
utils/vgl_shim/vgl_shaders/fragment.cg.inc
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@ -9,6 +9,10 @@ uniform sampler2D uTex1 : TEXUNIT1;
#if FEAT_ALPHA_TEST
uniform float uAlphaTest;
#endif
#if FEAT_FOG
// color + density, mode always GL_EXP
uniform float4 uFog;
#endif
float4 main(
uniform float4 uColor
@ -24,6 +28,9 @@ float4 main(
#if ATTR_NORMAL
, float3 vNormal : TEXCOORD2
#endif
#if FEAT_FOG
, float4 vPosition : WPOS
#endif
) {
#if ATTR_COLOR
float4 c = vColor;
@ -39,6 +46,11 @@ float4 main(
#if FEAT_ALPHA_TEST
if (c.a <= uAlphaTest)
discard;
#endif
#if FEAT_FOG
float fogDist = vPosition.z / vPosition.w;
float fogRate = clamp(exp(-uFog.w * fogDist), 0.f, 1.f);
c.rgb = lerp(uFog.rgb, c.rgb, fogRate);
#endif
return c;
}

123
utils/vgl_shim/vgl_shim.c
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@ -13,6 +13,12 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
this is a "replacement" for vitaGL's immediate mode tailored specifically for xash
this will only provide performance gains if vitaGL is built with DRAW_SPEEDHACK=1
since that makes it assume that all vertex data pointers are GPU-mapped
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@ -33,7 +39,7 @@ GNU General Public License for more details.
#include "vgl_shim.h"
#define MAX_SHADERLEN 4096
#define MAX_PROGS 32
#define MAX_PROGS 64 // hopefully this is enough
extern ref_api_t gEngfuncs;
@ -50,7 +56,8 @@ enum vgl_attrib_e
// continuation of previous enum
enum vgl_flag_e
{
VGL_FLAG_ALPHA_TEST = VGL_ATTR_MAX,
VGL_FLAG_ALPHA_TEST = VGL_ATTR_MAX, // 32
VGL_FLAG_FOG, // 64
VGL_FLAG_MAX
};
@ -63,6 +70,7 @@ typedef struct
GLint ualpha;
GLint utex0;
GLint utex1;
GLint ufog;
} vgl_prog_t;
static const char *vgl_vert_src =
@ -83,6 +91,7 @@ static struct
GLint end;
GLenum prim;
GLfloat color[4];
GLfloat fog[4]; // color + density
GLfloat alpharef;
vgl_prog_t progs[MAX_PROGS];
vgl_prog_t *cur_prog;
@ -99,6 +108,7 @@ static const char *vgl_flag_name[VGL_FLAG_MAX] =
"ATTR_TEXCOORD1",
"ATTR_NORMAL",
"FEAT_ALPHA_TEST",
"FEAT_FOG",
};
static const char *vgl_attr_name[VGL_ATTR_MAX] =
@ -110,8 +120,9 @@ static const char *vgl_attr_name[VGL_ATTR_MAX] =
"inNormal",
};
// HACK: borrow alpha test flag from internal vitaGL state
// HACK: borrow alpha test and fog flags from internal vitaGL state
extern GLboolean alpha_test_state;
extern GLboolean fogging;
static GLuint VGL_GenerateShader( const vgl_prog_t *prog, GLenum type )
{
@ -144,7 +155,7 @@ static GLuint VGL_GenerateShader( const vgl_prog_t *prog, GLenum type )
if ( status == GL_FALSE )
{
gEngfuncs.Con_Reportf( S_ERROR "VGL_GenerateShader( 0x%04x, 0x%x ): compile failed:\n", prog->flags, type );
gEngfuncs.Con_Printf( "Shader text:\n%s\n\n", shader );
gEngfuncs.Con_DPrintf( "Shader text:\n%s\n\n", shader );
glDeleteShader( id );
return 0;
}
@ -216,7 +227,7 @@ static vgl_prog_t *VGL_GetProg( const GLuint flags )
glGetProgramiv( glprog, GL_LINK_STATUS, &status );
if ( status == GL_FALSE )
{
gEngfuncs.Con_Reportf( S_ERROR "VGL_GetProg( 0x%04x ): link failed!\n", prog->flags );
gEngfuncs.Con_Reportf( S_ERROR "VGL_GetProg(): Failed linking progs for 0x%04x!\n", prog->flags );
prog->flags = 0;
glDeleteProgram( glprog );
return NULL;
@ -226,6 +237,7 @@ static vgl_prog_t *VGL_GetProg( const GLuint flags )
prog->ualpha = glGetUniformLocation( glprog, "uAlphaTest" );
prog->utex0 = glGetUniformLocation( glprog, "uTex0" );
prog->utex1 = glGetUniformLocation( glprog, "uTex1" );
prog->ufog = glGetUniformLocation( glprog, "uFog" );
// these never change
if ( prog->utex0 >= 0 )
@ -235,7 +247,7 @@ static vgl_prog_t *VGL_GetProg( const GLuint flags )
prog->glprog = glprog;
gEngfuncs.Con_DPrintf( S_NOTE "VGL_GetProg(): Generated progs for 0x%04x: glprog=%u ucolor=%d ualpha=%d\n", flags, glprog, prog->ucolor, prog->ualpha );
gEngfuncs.Con_DPrintf( S_NOTE "VGL_GetProg(): Generated progs for 0x%04x\n", flags );
return prog;
}
@ -257,6 +269,8 @@ static vgl_prog_t *VGL_SetProg( const GLuint flags )
glUniform1f( prog->ualpha, vgl.alpharef );
if ( prog->ucolor >= 0 )
glUniform4fv( prog->ucolor, 1, vgl.color );
if ( prog->ufog >= 0 )
glUniform4fv( prog->ufog, 1, vgl.fog );
vgl.uchanged = GL_FALSE;
}
}
@ -273,6 +287,16 @@ int VGL_ShimInit( void )
{
int i;
GLuint total, size;
static const GLuint precache_progs[] = {
0x0001, // out = ucolor
0x0005, // out = tex0 * ucolor
0x0007, // out = tex0 * vcolor
0x0025, // out = tex0 * ucolor + FEAT_ALPHA_TEST
0x0041, // out = ucolor + FEAT_FOG
0x0045, // out = tex0 * ucolor + FEAT_FOG
0x0047, // out = tex0 * vcolor + FEAT_FOG
0x0065, // out = tex0 * ucolor + FEAT_ALPHA_TEST + FEAT_FOG
};
if ( vgl_init )
return 0;
@ -296,6 +320,9 @@ int VGL_ShimInit( void )
VGL_ShimInstall();
gEngfuncs.Con_DPrintf( S_NOTE "VGL_ShimInit(): %u bytes allocated for vertex buffer\n", total );
gEngfuncs.Con_DPrintf( S_NOTE "VGL_ShimInit(): Pre-generating %u progs...\n", sizeof( precache_progs ) / sizeof( *precache_progs ) );
for ( i = 0; i < (int)( sizeof( precache_progs ) / sizeof( *precache_progs ) ); ++i )
VGL_GetProg( precache_progs[i] );
vgl_init = 1;
return 0;
@ -359,9 +386,11 @@ void VGL_End( void )
goto _leave;
}
// enable alpha test if needed
// enable alpha test and fog if needed
if ( alpha_test_state )
flags |= 1 << VGL_FLAG_ALPHA_TEST;
if ( fogging )
flags |= 1 << VGL_FLAG_FOG;
prog = VGL_SetProg( flags );
if ( !prog )
@ -489,44 +518,60 @@ void VGL_AlphaFunc( GLenum mode, GLfloat ref )
// mode is always GL_GREATER
}
void VGL_Fogf( GLenum param, GLfloat val )
{
if ( param == GL_FOG_DENSITY )
{
vgl.fog[3] = val;
vgl.uchanged = GL_TRUE;
}
}
void VGL_Fogfv( GLenum param, const GLfloat *val )
{
if ( param == GL_FOG_COLOR )
{
vgl.fog[0] = val[0];
vgl.fog[1] = val[1];
vgl.fog[2] = val[2];
vgl.uchanged = GL_TRUE;
}
}
void VGL_DrawBuffer( GLenum mode )
{
/* unsupported */
}
#define VGL_DECLARE_PTR( name ) extern void *pgl ## name
#define VGL_OVERRIDE_PTR( name ) pgl ## name = VGL_ ## name
void VGL_Hint( GLenum hint, GLenum val )
{
/* none of the used hints are supported; stub to prevent errors */
}
#define VGL_OVERRIDE_PTR( name ) \
{ \
extern void *pgl ## name; \
pgl ## name = VGL_ ## name; \
}
void VGL_ShimInstall( void )
{
VGL_DECLARE_PTR( Vertex2f );
VGL_DECLARE_PTR( Vertex3f );
VGL_DECLARE_PTR( Vertex3fv );
VGL_DECLARE_PTR( Color3f );
VGL_DECLARE_PTR( Color4f );
VGL_DECLARE_PTR( Color4ub );
VGL_DECLARE_PTR( Color4ubv );
VGL_DECLARE_PTR( Normal3fv );
VGL_DECLARE_PTR( TexCoord2f );
VGL_DECLARE_PTR( MultiTexCoord2f );
VGL_DECLARE_PTR( ShadeModel );
VGL_DECLARE_PTR( DrawBuffer );
VGL_DECLARE_PTR( AlphaFunc );
VGL_DECLARE_PTR( Begin );
VGL_DECLARE_PTR( End );
VGL_OVERRIDE_PTR( Vertex2f );
VGL_OVERRIDE_PTR( Vertex3f );
VGL_OVERRIDE_PTR( Vertex3fv );
VGL_OVERRIDE_PTR( Color3f );
VGL_OVERRIDE_PTR( Color4f );
VGL_OVERRIDE_PTR( Color4ub );
VGL_OVERRIDE_PTR( Color4ubv );
VGL_OVERRIDE_PTR( Normal3fv );
VGL_OVERRIDE_PTR( TexCoord2f );
VGL_OVERRIDE_PTR( MultiTexCoord2f );
VGL_OVERRIDE_PTR( ShadeModel );
VGL_OVERRIDE_PTR( DrawBuffer );
VGL_OVERRIDE_PTR( AlphaFunc );
VGL_OVERRIDE_PTR( Begin );
VGL_OVERRIDE_PTR( End );
VGL_OVERRIDE_PTR( Vertex2f )
VGL_OVERRIDE_PTR( Vertex3f )
VGL_OVERRIDE_PTR( Vertex3fv )
VGL_OVERRIDE_PTR( Color3f )
VGL_OVERRIDE_PTR( Color4f )
VGL_OVERRIDE_PTR( Color4ub )
VGL_OVERRIDE_PTR( Color4ubv )
VGL_OVERRIDE_PTR( Normal3fv )
VGL_OVERRIDE_PTR( TexCoord2f )
VGL_OVERRIDE_PTR( MultiTexCoord2f )
VGL_OVERRIDE_PTR( ShadeModel )
VGL_OVERRIDE_PTR( DrawBuffer )
VGL_OVERRIDE_PTR( AlphaFunc )
VGL_OVERRIDE_PTR( Fogf )
VGL_OVERRIDE_PTR( Fogfv )
VGL_OVERRIDE_PTR( Hint )
VGL_OVERRIDE_PTR( Begin )
VGL_OVERRIDE_PTR( End )
}

2
utils/vgl_shim/vgl_shim.h
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@ -16,7 +16,7 @@ GNU General Public License for more details.
#pragma once
// max verts in a single frame
#define VGL_MAX_VERTS 16384
#define VGL_MAX_VERTS 32768
int VGL_ShimInit( void );
void VGL_ShimInstall( void );