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ref_soft: glblit: gles3 pbo+fbo blitter

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This commit is contained in:
mittorn 2019-10-13 03:52:47 +07:00
parent 2493659b23
commit f376d5d59c
1 changed files with 104 additions and 6 deletions
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110
r_glblit.c
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@ -61,10 +61,10 @@ void GAME_EXPORT GL_SetupAttributes( int safegl )
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_FLAGS, REF_GL_CONTEXT_DEBUG_FLAG );
#endif
// untill we have any blitter in ref api, setup GL
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_PROFILE_MASK, REF_GL_CONTEXT_PROFILE_ES);
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_PROFILE_MASK, REF_GL_CONTEXT_PROFILE_ES );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_EGL, 1 );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MAJOR_VERSION, 1 );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MINOR_VERSION, 1 );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MAJOR_VERSION, 3 );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MINOR_VERSION, 0 );
gEngfuncs.GL_SetAttribute( REF_GL_DOUBLEBUFFER, 1 );
gEngfuncs.GL_SetAttribute( REF_GL_RED_SIZE, 5 );
@ -78,6 +78,13 @@ void GL_FUNCTION( glBindBuffer)(GLenum target, GLuint buffer);
void GL_FUNCTION( glBufferData )(GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
void GL_FUNCTION( glGenBuffers )(GLsizei n, GLuint *buffers);
void GL_FUNCTION( glDeleteBuffers )(GLsizei n, const GLuint *buffers);
GLvoid* GL_FUNCTION( glMapBuffer )(GLenum target, GLenum access);
GLboolean GL_FUNCTION( glUnmapBuffer )(GLenum target);
#define GL_PIXEL_UNPACK_BUFFER 0x88EC
#define GL_FRAMEBUFFER 0x8D40
#define GL_COLOR_ATTACHMENT0 0x8CE0
#define GL_READ_FRAMEBUFFER 0x8CA8
#define GL_DRAW_FRAMEBUFFER 0x8CA9
void GAME_EXPORT GL_InitExtensions( void )
{
LOAD(glBegin);
@ -112,6 +119,13 @@ void GAME_EXPORT GL_InitExtensions( void )
LOAD(glBufferData);
LOAD(glGenBuffers);
LOAD(glDeleteBuffers);
LOAD(glMapBuffer);
LOAD(glUnmapBuffer);
LOAD(glGenFramebuffers);
LOAD(glBindFramebuffer);
LOAD(glFramebufferTexture2D);
LOAD(glBlitFramebuffer);
LOAD(glGenTextures);
gEngfuncs.Con_Printf("version:%s\n",pglGetString(GL_VERSION));
#if GLDEBUG
if( gpGlobals->developer )
@ -248,6 +262,90 @@ static qboolean R_CreateBuffer_GLES1( int width, int height, uint *stride, uint
return true;
}
static void *R_Lock_GLES3( void )
{
pglBufferData( GL_PIXEL_UNPACK_BUFFER, vid.width * vid.height * 2, 0, GL_STREAM_DRAW_ARB );
return pglMapBuffer( GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY_ARB );
}
static void R_Unlock_GLES3( void )
{
gEngfuncs.GL_SwapBuffers();
pglUnmapBuffer( GL_PIXEL_UNPACK_BUFFER );
pglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, vid.width, vid.height, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 0 );
//pglDrawArrays( GL_TRIANGLE_FAN, 0,4 );
pglBlitFramebuffer( 0, vid.height, vid.width, 0, 0, 0, vid.width, vid.height, GL_COLOR_BUFFER_BIT, GL_NEAREST );
}
static qboolean R_CreateBuffer_GLES3( int width, int height, uint *stride, uint *bpp, uint *r, uint *g, uint *b )
{
float data[] = {
// quad verts match texcoords
0, 0,
1, 0,
1, 1,
0, 1,
};
int vbo, pbo, fbo, to;
// shitty fbo does not work without texture objects :(
pglGenTextures( 1, &to );
pglBindTexture( GL_TEXTURE_2D, to );
pglViewport( 0, 0, width, height );
/*pglMatrixMode( GL_PROJECTION );
pglLoadIdentity();
// project 0..1 to screen size
pglOrtho( 0, 1, 1, 0, -99999, 99999 );
pglMatrixMode( GL_MODELVIEW );
pglLoadIdentity();
pglEnable( GL_TEXTURE_2D );
pglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
pglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
if( vbo )
pglDeleteBuffers( 1,&vbo );
*/
if( pbo )
pglDeleteBuffers( 1,&pbo );
//pglGenBuffers( 1,&vbo );
pglGenBuffers( 1, &pbo );
//pglBindBuffer( GL_ARRAY_BUFFER_ARB, vbo );
//pglBufferData( GL_ARRAY_BUFFER_ARB, sizeof(data), data, GL_STATIC_DRAW_ARB );
//pglEnableClientState( GL_VERTEX_ARRAY );
//pglEnableClientState( GL_TEXTURE_COORD_ARRAY );
//pglVertexPointer( 2, GL_FLOAT, 8, 0 );
//pglTexCoordPointer( 2, GL_FLOAT, 8, 0 );
//pglBindBuffer( GL_ARRAY_BUFFER_ARB, 0 );
pglBindBuffer( GL_PIXEL_UNPACK_BUFFER, pbo );
pglBufferData( GL_PIXEL_UNPACK_BUFFER, width * height * 2, 0, GL_STREAM_DRAW_ARB );
pglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, 0 );
pglGenFramebuffers(1, &fbo);
pglBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
pglFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, to, 0);
pglBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
//pglColor4f( 1, 1, 1, 1 );
*stride = width;
*bpp = 2;
*r = MASK(5) << 6 + 5;
*g = MASK(6) << 5;
*b = MASK(5);
return true;
}
static int FIRST_BIT( uint mask )
@ -467,9 +565,9 @@ void R_InitBlit( qboolean glblit )
if( glblit )
{
swblit.pLockBuffer = R_Lock_GL1;
swblit.pUnlockBuffer = R_Unlock_GLES1;
swblit.pCreateBuffer = R_CreateBuffer_GLES1;
swblit.pLockBuffer = R_Lock_GLES3;
swblit.pUnlockBuffer = R_Unlock_GLES3;
swblit.pCreateBuffer = R_CreateBuffer_GLES3;
}
else
{