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quakeforge/libs/video/targets/vid_common_glsl.c
Bill Currie ef37ed39a9 Clean up global symbols for the glsl renderer. 
Where possible, symbols have been made static, prefixed with glsl_/GLSL_ or
moved into the code shared by all renderers. This will make doing plugins
easier but done now for link testing. The moving was done via the gl
commit.
2012-02-18 11:48:52 +09:00

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/*
vid_common_glsl.c
Common OpenGLSL video driver functions
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2011 Bill Currie <bill@taniwha.org>
This program 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 Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] = "$Id$";
#ifdef HAVE_MATH_H
# include <math.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include "QF/cvar.h"
#include "QF/dstring.h"
#include "QF/input.h"
#include "QF/qargs.h"
#include "QF/quakefs.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/vid.h"
#include "QF/GLSL/defines.h"
#include "QF/GLSL/funcs.h"
#include "QF/GLSL/qf_vid.h"
#include "QF/GLSL/qf_textures.h"
#include "compat.h"
#include "d_iface.h"
#include "r_cvar.h"
#include "sbar.h"
VISIBLE int glsl_palette;
VISIBLE int glsl_colormap;
VISIBLE int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
VISIBLE int gl_filter_max = GL_LINEAR;
VISIBLE float gldepthmin, gldepthmax;
VISIBLE qboolean is8bit = false;
static void
GLSL_Common_Init_Cvars (void)
{
}
void
VID_SetPalette (unsigned char *palette)
{
byte *pal, *col, *ip, *op;
unsigned int r, g, b, v;
unsigned short i;
unsigned int *table;
// 8 8 8 encoding
Sys_MaskPrintf (SYS_VID, "Converting 8to24\n");
pal = palette;
table = d_8to24table;
for (i = 0; i < 255; i++) { // used to be i<256, see d_8to24table below
r = pal[0];
g = pal[1];
b = pal[2];
pal += 3;
#ifdef WORDS_BIGENDIAN
v = (255 << 0) + (r << 24) + (g << 16) + (b << 8);
#else
v = (255 << 24) + (r << 0) + (g << 8) + (b << 16);
#endif
*table++ = v;
}
d_8to24table[255] = 0; // 255 is transparent
Sys_MaskPrintf (SYS_VID, "Converting palette/colormap to RGBA textures\n");
pal = malloc (256 * VID_GRADES * 4);
for (i = 0, col = vid.colormap8, op = pal; i < 256 * VID_GRADES; i++) {
ip = palette + *col++ * 3;
*op++ = *ip++;
*op++ = *ip++;
*op++ = *ip++;
*op++ = 255; // alpha = 1
}
for (i = 0; i < VID_GRADES; i++)
pal[i * 256 * 4 + 255 + 3] = 0;
if (!glsl_colormap) {
GLuint tex;
qfglGenTextures (1, &tex);
glsl_colormap = tex;
}
qfglBindTexture (GL_TEXTURE_2D, glsl_colormap);
qfglTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, 256, VID_GRADES, 0,
GL_RGBA, GL_UNSIGNED_BYTE, pal);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
for (i = 0, ip = palette, op = pal; i < 255; i++) {
*op++ = *ip++;
*op++ = *ip++;
*op++ = *ip++;
*op++ = 255; // alpha = 1
}
QuatZero (op);
if (!glsl_palette) {
GLuint tex;
qfglGenTextures (1, &tex);
glsl_palette = tex;
}
qfglBindTexture (GL_TEXTURE_2D, glsl_palette);
qfglTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, 256, 1, 0,
GL_RGBA, GL_UNSIGNED_BYTE, pal);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
qfglTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
free (pal);
}
void
GL_Init_Common (void)
{
GLF_FindFunctions ();
GLSL_Common_Init_Cvars ();
GLSL_TextureInit ();
qfglClearColor (0, 0, 0, 0);
qfglPixelStorei (GL_UNPACK_ALIGNMENT, 1);
qfglEnable (GL_TEXTURE_2D);
qfglFrontFace (GL_CW);
qfglCullFace (GL_BACK);
qfglEnable (GL_BLEND);
qfglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
void
VID_Init8bitPalette (void)
{
}
void
VID_LockBuffer (void)
{
}
void
VID_UnlockBuffer (void)
{
}
void
D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
}
void
D_EndDirectRect (int x, int y, int width, int height)
{
}
int
GLSL_CompileShader (const char *name, const char *shader_src, int type)
{
const char *src[1];
int shader;
int compiled;
src[0] = shader_src;
shader = qfglCreateShader (type);
qfglShaderSource (shader, 1, src, 0);
qfglCompileShader (shader);
qfglGetShaderiv (shader, GL_COMPILE_STATUS, &compiled);
if (!compiled || (developer->int_val & SYS_GLSL)) {
dstring_t *log = dstring_new ();
int size;
qfglGetShaderiv (shader, GL_INFO_LOG_LENGTH, &size);
log->size = size + 1; // for terminating null
dstring_adjust (log);
qfglGetShaderInfoLog (shader, log->size, 0, log->str);
if (!compiled)
qfglDeleteShader (shader);
Sys_Printf ("Shader (%s) compile log:\n----8<----\n%s----8<----\n",
name, log->str);
dstring_delete (log);
if (!compiled)
return 0;
}
return shader;
}
static const char *
type_name (GLenum type)
{
switch (type) {
case GL_FLOAT_VEC2:
return "vec2";
case GL_FLOAT_VEC3:
return "vec3";
case GL_FLOAT_VEC4:
return "vec4";
case GL_INT_VEC2:
return "ivec2";
case GL_INT_VEC3:
return "ivec3";
case GL_INT_VEC4:
return "ivec4";
case GL_BOOL:
return "bool";
case GL_BOOL_VEC2:
return "bvec2";
case GL_BOOL_VEC3:
return "bvec3";
case GL_BOOL_VEC4:
return "bvec4";
case GL_FLOAT_MAT2:
return "mat2";
case GL_FLOAT_MAT3:
return "mat3";
case GL_FLOAT_MAT4:
return "mat4";
case GL_SAMPLER_2D:
return "sampler_2d";
case GL_SAMPLER_CUBE:
return "sampler_cube";
case GL_BYTE:
return "byte";
case GL_UNSIGNED_BYTE:
return "unsigned byte";
case GL_SHORT:
return "short";
case GL_UNSIGNED_SHORT:
return "unsigned short";
case GL_INT:
return "int";
case GL_UNSIGNED_INT:
return "unsigned int";
case GL_FLOAT:
return "float";
case GL_FIXED:
return "fixed";
}
return va("%x", type);
}
static void
dump_program (const char *name, int program)
{
GLint ind = 0;
GLint count = 0;
GLint size;
dstring_t *pname;
GLint psize = 0;
GLenum ptype = 0;
pname = dstring_new ();
qfglGetProgramiv (program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &size);
pname->size = size;
dstring_adjust (pname);
qfglGetProgramiv(program, GL_ACTIVE_UNIFORMS, &count);
Sys_Printf("Program %s (%d) has %i uniforms\n", name, program, count);
for (ind = 0; ind < count; ind++) {
qfglGetActiveUniform(program, ind, pname->size, 0, &psize, &ptype,
pname->str);
Sys_Printf ("Uniform %i name \"%s\" size %i type %s\n", (int)ind,
pname->str, (int)psize, type_name (ptype));
}
qfglGetProgramiv (program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &size);
pname->size = size;
dstring_adjust (pname);
qfglGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &count);
Sys_Printf("Program %s (%d) has %i attributes\n", name, program, count);
for (ind = 0; ind < count; ind++) {
qfglGetActiveAttrib(program, ind, pname->size, 0, &psize, &ptype,
pname->str);
Sys_Printf ("Attribute %i name \"%s\" size %i type %s\n", (int)ind,
pname->str, (int)psize, type_name (ptype));
}
dstring_delete (pname);
}
int
GLSL_LinkProgram (const char *name, int vert, int frag)
{
int program;
int linked;
program = qfglCreateProgram ();
qfglAttachShader (program, vert);
qfglAttachShader (program, frag);
qfglLinkProgram (program);
qfglGetProgramiv (program, GL_LINK_STATUS, &linked);
if (!linked || (developer->int_val & SYS_GLSL)) {
dstring_t *log = dstring_new ();
int size;
qfglGetProgramiv (program, GL_INFO_LOG_LENGTH, &size);
log->size = size + 1; // for terminating null
dstring_adjust (log);
qfglGetProgramInfoLog (program, log->size, 0, log->str);
if (!linked)
qfglDeleteProgram (program);
Sys_Printf ("Program (%s) link log:\n----8<----\n%s----8<----\n",
name, log->str);
dstring_delete (log);
if (!linked)
return 0;
}
if (developer->int_val & SYS_GLSL)
dump_program (name, program);
return program;
}
int
GLSL_ResolveShaderParam (int program, shaderparam_t *param)
{
if (param->uniform) {
param->location = qfglGetUniformLocation (program, param->name);
} else {
param->location = qfglGetAttribLocation (program, param->name);
}
if (param->location < 0) {
Sys_Printf ("could not resolve %s %s\n",
param->uniform ? "uniform" : "attribute", param->name);
} else {
Sys_MaskPrintf (SYS_GLSL, "Resolved %s %s @ %d\n",
param->uniform ? "uniform" : "attribute",
param->name, param->location);
}
return param->location;
}
void
GLSL_DumpAttribArrays (void)
{
GLint max = 0;
GLint ind;
GLint enabled;
GLint size = -1;
GLint stride = -1;
GLint type = -1;
GLint norm = -1;
GLint binding = -1;
GLint current[4] = {-1, -1, -1, -1};
void *pointer = 0;
qfglGetIntegerv (GL_MAX_VERTEX_ATTRIBS, &max);
for (ind = 0; ind < max; ind++) {
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &enabled);
Sys_Printf ("attrib %d: %sabled\n", ind, enabled ? "en" : "dis");
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_SIZE, &size);
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &stride);
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_TYPE, &type);
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &norm);
qfglGetVertexAttribiv (ind, GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING,
&binding);
qfglGetVertexAttribiv (ind, GL_CURRENT_VERTEX_ATTRIB, current);
qfglGetVertexAttribPointerv (ind, GL_VERTEX_ATTRIB_ARRAY_POINTER,
&pointer);
Sys_Printf (" %d %d '%s' %d %d (%d %d %d %d) %p\n", size, stride,
type_name (type), norm, binding, QuatExpand (current),
pointer);
}
}
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