mirror of https://github.com/xemu-project/xemu.git
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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* Geforce NV2A PGRAPH GLSL Shader Generator
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*
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* Copyright (c) 2024-2025 Matt Borgerson
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "common.h"
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#include "hw/xbox/nv2a/pgraph/pgraph.h"
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#define DECL_UNIFORM_ELEMENT_NAME(type) #type,
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const char *uniform_element_type_to_str[] = {
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UNIFORM_ELEMENT_TYPE_X(DECL_UNIFORM_ELEMENT_NAME)
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};
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MString *pgraph_glsl_get_vtx_header(MString *out, bool location, bool smooth,
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bool in, bool prefix, bool array)
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{
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const char *smooth_s = "";
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const char *flat_s = "flat ";
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const char *qualifier_s = smooth ? smooth_s : flat_s;
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const char *in_out_s = in ? "in" : "out";
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const char *float_s = "float";
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const char *vec4_s = "vec4";
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const char *prefix_s = prefix ? "v_" : "";
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const char *suffix_s = array ? "[]" : "";
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const struct {
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const char *qualifier, *type, *name;
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} attr[] = {
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{ qualifier_s, vec4_s, "vtxD0" },
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{ qualifier_s, vec4_s, "vtxD1" },
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{ qualifier_s, vec4_s, "vtxB0" },
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{ qualifier_s, vec4_s, "vtxB1" },
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{ smooth_s, float_s, "vtxFog" },
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{ smooth_s, vec4_s, "vtxT0" },
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{ smooth_s, vec4_s, "vtxT1" },
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{ smooth_s, vec4_s, "vtxT2" },
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{ smooth_s, vec4_s, "vtxT3" },
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};
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for (int i = 0; i < ARRAY_SIZE(attr); i++) {
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if (location) {
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mstring_append_fmt(out, "layout(location = %d) ", i);
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}
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mstring_append_fmt(out, "%s%s %s %s%s%s;\n", attr[i].qualifier,
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in_out_s, attr[i].type, prefix_s, attr[i].name,
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suffix_s);
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}
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return out;
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}
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void pgraph_glsl_set_clip_range_uniform_value(PGRAPHState *pg, float clipRange[4])
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{
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float zmax;
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switch (pg->surface_shape.zeta_format) {
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case NV097_SET_SURFACE_FORMAT_ZETA_Z16:
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zmax = pg->surface_shape.z_format ? f16_max : (float)0xFFFF;
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break;
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case NV097_SET_SURFACE_FORMAT_ZETA_Z24S8:
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zmax = pg->surface_shape.z_format ? f24_max : (float)0xFFFFFF;
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break;
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default:
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assert(0);
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}
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uint32_t zclip_min = pgraph_reg_r(pg, NV_PGRAPH_ZCLIPMIN);
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uint32_t zclip_max = pgraph_reg_r(pg, NV_PGRAPH_ZCLIPMAX);
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clipRange[0] = 0;
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clipRange[1] = zmax;
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clipRange[2] = *(float *)&zclip_min;
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clipRange[3] = *(float *)&zclip_max;
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}
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