51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
#include "./menu_background.h"
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#include <assert.h>
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#include <stddef.h>
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#include "util/gleasy/program.h"
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#include "util/math/algorithm.h"
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#include "./single.h"
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#include "./uniblock.h"
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/* resources */
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#include "core/loshader/anysrc/header.shader.h"
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#include "core/loshader/anysrc/menu_background.vshader.h"
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#include "core/loshader/anysrc/menu_background.fshader.h"
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#define UNIFORM_ALPHA_ 0
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#define PRIMITIVE_COUNT_ 6
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void loshader_menu_background_drawer_initialize(
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loshader_menu_background_drawer_t* drawer,
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const loshader_uniblock_t* uniblock) {
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assert(drawer != NULL);
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assert(uniblock != NULL);
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const gleasy_program_t prog = gleasy_program_new(
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loshader_header_shader_,
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sizeof(loshader_header_shader_),
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loshader_menu_background_vshader_,
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sizeof(loshader_menu_background_vshader_),
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loshader_menu_background_fshader_,
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sizeof(loshader_menu_background_fshader_));
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loshader_single_drawer_initialize(&drawer->super, prog, uniblock, 0);
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}
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void loshader_menu_background_drawer_draw(
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const loshader_menu_background_drawer_t* drawer) {
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assert(drawer != NULL);
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assert(MATH_FLOAT_VALID(drawer->alpha));
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if (drawer->alpha == 0) return;
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glUseProgram(drawer->super.prog);
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glUniform1f(UNIFORM_ALPHA_, drawer->alpha);
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loshader_single_drawer_draw_without_use_program(
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&drawer->super, PRIMITIVE_COUNT_);
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}
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