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#include "glheader.h"
#include "state.h"
#include "imports.h"
#include "enums.h"
#include "macros.h"
#include "context.h"
#include "dd.h"
#include "simple_list.h"
#include "api_arrayelt.h"
#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "array_cache/acache.h"
#include "tnl/tnl.h"
#include "texformat.h"
#include "radeon_ioctl.h"
#include "radeon_state.h"
#include "r300_context.h"
#include "r300_ioctl.h"
#include "r300_state.h"
#include "r300_reg.h"
#include "r300_program.h"
#include "r300_emit.h"
#include "r300_fixed_pipelines.h"
#include "r300_tex.h"
#include "pixel_shader.h"
#include "r300_texprog.h"
/* TODO: we probably should have a better way to emit alu instructions */
#define INST0 p->alu.inst[p->alu.length].inst0 =
#define INST1 p->alu.inst[p->alu.length].inst1 =
#define INST2 p->alu.inst[p->alu.length].inst2 =
#define INST3 p->alu.inst[p->alu.length].inst3 =
#define EMIT_INST p->alu.length++
void emit_tex(struct r300_pixel_shader_program *p, GLuint dest, GLuint unit, GLuint src)
{
p->tex.inst[p->tex.length++] = 0
| (src << R300_FPITX_SRC_SHIFT)
| (dest << R300_FPITX_DST_SHIFT)
| (unit << R300_FPITX_IMAGE_SHIFT)
/* I don't know if this is needed, but the hardcoded 0x18000 set it, so I will too */
| (3 << 15);
// fprintf(stderr, "emit texinst: 0x%x\n", p->tex.inst[p->tex.length-1]);
}
GLuint get_source(struct r300_pixel_shader_state *ps, GLenum src, GLuint unit, GLuint tc_reg) {
switch (src) {
case GL_TEXTURE:
if (!ps->have_sample) {
emit_tex(&ps->program, tc_reg, unit, tc_reg);
ps->have_sample = 1;
}
return tc_reg;
case GL_CONSTANT:
WARN_ONCE("TODO: Implement envcolor\n");
return ps->color_reg;
case GL_PRIMARY_COLOR:
return ps->color_reg;
case GL_PREVIOUS:
return ps->src_previous;
default:
WARN_ONCE("Unknown source enum\n");
return ps->src_previous;
}
}
GLuint get_temp(struct r300_pixel_shader_program *p)
{
return p->temp_register_count++;
}
inline void emit_texenv_color(r300ContextPtr r300, struct r300_pixel_shader_state *ps,
GLuint out, GLenum envmode, GLenum format, GLuint unit, GLuint tc_reg) {
struct r300_pixel_shader_program *p = &ps->program;
const GLuint Cp = get_source(ps, GL_PREVIOUS, unit, tc_reg);
const GLuint Cs = get_source(ps, GL_TEXTURE, unit, tc_reg);
switch(envmode) {
case GL_DECAL: /* TODO */
case GL_BLEND: /* TODO */
case GL_REPLACE:
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, ZERO);
switch (format) {
case GL_ALPHA:
// Cv = Cp
INST1 EASY_PFS_INSTR1(out, Cp, PFS_FLAG_CONST, PFS_FLAG_CONST, ALL, NONE);
break;
default:
// Cv = Cs
INST1 EASY_PFS_INSTR1(out, Cs, PFS_FLAG_CONST, PFS_FLAG_CONST, ALL, NONE);
break;
}
break;
case GL_MODULATE:
switch (format) {
case GL_ALPHA:
// Cv = Cp
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, ZERO);
INST1 EASY_PFS_INSTR1(out, Cp, PFS_FLAG_CONST, PFS_FLAG_CONST, ALL, NONE);
break;
default:
// Cv = CpCs
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, SRC1C_XYZ, ZERO);
INST1 EASY_PFS_INSTR1(out, Cp, Cs, PFS_FLAG_CONST, ALL, NONE);
break;
}
break;
case GL_ADD:
switch (format) {
case GL_ALPHA:
// Cv = Cp
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, ZERO);
INST1 EASY_PFS_INSTR1(out, Cp, PFS_FLAG_CONST, PFS_FLAG_CONST, ALL, NONE);
break;
default:
// Cv = Cp + Cs
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, SRC1C_XYZ);
INST1 EASY_PFS_INSTR1(out, Cp, Cs, PFS_FLAG_CONST, ALL, NONE);
break;
}
break;
default:
fprintf(stderr, "%s: should never get here!\n", __func__);
break;
}
return;
}
inline void emit_texenv_alpha(r300ContextPtr r300, struct r300_pixel_shader_state *ps,
GLuint out, GLenum envmode, GLenum format, GLuint unit, GLuint tc_reg) {
struct r300_pixel_shader_program *p = &ps->program;
const GLuint Ap = get_source(ps, GL_PREVIOUS, unit, tc_reg);
const GLuint As = get_source(ps, GL_TEXTURE, unit, tc_reg);
switch(envmode) {
case GL_DECAL: /* TODO */
case GL_BLEND: /* TODO */
case GL_REPLACE:
INST2 EASY_PFS_INSTR2(MAD, SRC0A, ONE, ZERO);
switch (format) {
case GL_LUMINANCE:
case GL_RGB:
// Av = Ap
INST3 EASY_PFS_INSTR3(out, Ap, PFS_FLAG_CONST, PFS_FLAG_CONST, REG);
break;
default:
INST3 EASY_PFS_INSTR3(out, As, PFS_FLAG_CONST, PFS_FLAG_CONST, REG);
break;
}
break;
case GL_MODULATE:
case GL_ADD:
switch (format) {
case GL_LUMINANCE:
case GL_RGB:
// Av = Ap
INST2 EASY_PFS_INSTR2(MAD, SRC0A, ONE, ZERO);
INST3 EASY_PFS_INSTR3(out, Ap, PFS_FLAG_CONST, PFS_FLAG_CONST, REG);
break;
default:
// Av = ApAs
INST2 EASY_PFS_INSTR2(MAD, SRC0A, SRC1A, ZERO);
INST3 EASY_PFS_INSTR3(out, Ap, As, PFS_FLAG_CONST, REG);
break;
}
break;
default:
fprintf(stderr, "%s: should never get here!\n", __func__);
break;
}
return;
}
GLuint emit_texenv(r300ContextPtr r300, GLuint tc_reg, GLuint unit)
{
struct r300_pixel_shader_state *ps = &r300->state.pixel_shader;
struct r300_pixel_shader_program *p = &ps->program;
GLcontext *ctx = r300->radeon.glCtx;
struct gl_texture_object *texobj = ctx->Texture.Unit[unit]._Current;
GLenum envmode = ctx->Texture.Unit[unit].EnvMode;
GLenum format = texobj->Image[0][texobj->BaseLevel]->Format;
const GLuint out = tc_reg;
const GLuint Cf = get_source(ps, GL_PRIMARY_COLOR, unit, tc_reg);
WARN_ONCE("Texture environments are currently incomplete / wrong! Help me!\n");
// fprintf(stderr, "EnvMode = %s\n", _mesa_lookup_enum_by_nr(ctx->Texture.Unit[unit].EnvMode));
switch (envmode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_DECAL:
case GL_BLEND:
case GL_ADD:
/* Maybe these should be combined? I thought it'd be messy */
emit_texenv_color(r300, ps, out, envmode, format, unit, tc_reg);
emit_texenv_alpha(r300, ps, out, envmode, format, unit, tc_reg);
EMIT_INST;
return out;
break;
case GL_COMBINE:
WARN_ONCE("EnvMode == GL_COMBINE unsupported! Help Me!!\n");
return Cf;
break;
default:
WARN_ONCE("Unknown EnvMode == %d, name=%d\n", envmode,
_mesa_lookup_enum_by_nr(envmode));
return Cf;
break;
}
}
void r300GenerateTextureFragmentShader(r300ContextPtr r300)
{
struct r300_pixel_shader_state *ps = &r300->state.pixel_shader;
struct r300_pixel_shader_program *p = &ps->program;
GLcontext *ctx = r300->radeon.glCtx;
int i, tc_reg;
p->tex.length = 0;
p->alu.length = 0;
p->active_nodes = 1;
p->first_node_has_tex = 1;
p->temp_register_count = r300->state.texture.tc_count + 1; /* texcoords and colour reg */
ps->color_reg = r300->state.texture.tc_count;
ps->src_previous = ps->color_reg;
tc_reg = 0;
for (i=0;i<ctx->Const.MaxTextureUnits;i++) {
if (r300->state.render_inputs & (_TNL_BIT_TEX0<<i)) {
ps->have_sample = 0;
ps->src_previous = emit_texenv(r300, tc_reg, i);
tc_reg++;
}
}
/* Do a MOV from last output, to destination reg.. This won't be needed when we
* have a better way of emitting alu instructions
*/
INST0 EASY_PFS_INSTR0(MAD, SRC0C_XYZ, ONE, ZERO);
INST1 EASY_PFS_INSTR1(0, ps->src_previous, PFS_FLAG_CONST, PFS_FLAG_CONST, NONE, ALL);
INST2 EASY_PFS_INSTR2(MAD, SRC0A, ONE, ZERO);
INST3 EASY_PFS_INSTR3(0, ps->src_previous, PFS_FLAG_CONST, PFS_FLAG_CONST, OUTPUT);
EMIT_INST;
p->node[3].tex_end = ps->program.tex.length - 1;
p->node[3].tex_offset = 0;
p->node[3].alu_end = ps->program.alu.length - 1;
p->node[3].alu_offset = 0;
p->tex_end = ps->program.tex.length - 1;
p->tex_offset = 0;
p->alu_end = ps->program.alu.length - 1;
p->alu_offset = 0;
}
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