109 lines
4.4 KiB
C
109 lines
4.4 KiB
C
/*
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* This file is part of Shimatta OpenGL.
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*
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* Shimatta OpenGL is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Shimatta OpenGL 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GtkGraphView. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <glib.h>
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#include <glib-object.h>
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#include <cglm/cglm.h>
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G_BEGIN_DECLS
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#define SHIMATTA_TYPE_OPENGL_PROGRAM (shimatta_opengl_program_get_type())
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G_DECLARE_FINAL_TYPE(ShimattaOpenglProgram, shimatta_opengl_program, SHIMATTA, OPENGL_PROGRAM, GObject);
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/**
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* @brief generate a new shader program using the source code for the shaders
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* @param vertex_shader Vertex shader source code
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* @param geometry_shader Geometry shader source code
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* @param fragment_shader Fragement shader source code
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* @return New shader program
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*/
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ShimattaOpenglProgram *shimatta_opengl_program_new_from_data(const char *vertex_shader,
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const char *geometry_shader,
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const char *fragment_shader);
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/**
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* @brief shimatta_opengl_program_new_from_file
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* @param vertex_shader Source file for the vertex shader
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* @param geometry_shader Source file for the geometry shader
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* @param fragment_shader source file for the fragment shader
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* @return New shader program
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* @note The files have tobe accessible when calling @ref shimatta_opengl_program_compile
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*/
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ShimattaOpenglProgram *shimatta_opengl_program_new_from_file(const char *vertex_shader,
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const char *geometry_shader,
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const char *fragment_shader);
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/**
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* @brief Compile the OpenGL Program
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* @param program Shader Program
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* @param error_text Error message from compilation. May be NULL.
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* @param error_text_size Size in bytes of the error_text buffer. May be 0.
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* @return 0 if successful. If Error error text will hold the error. 1 is returned if program is already compiled
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*/
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int shimatta_opengl_program_compile(ShimattaOpenglProgram *program, char *error_text, size_t error_text_size);
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/**
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* @brief Active shader program.
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*
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* The activation only works, if the program is compiled successfully
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*
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* @param program Shader program
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* @return 0 if successful
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*/
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int shimatta_opengl_program_use(ShimattaOpenglProgram *program);
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/**
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* @brief Check if shader program is compiled
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* @param program Shader program
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* @return true if successfully built
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*/
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gboolean shimatta_opengl_program_is_compiled(ShimattaOpenglProgram *program);
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/**
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* @brief Get the location of a uniform of a given shader program
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* @param program Shader program
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* @param uniform_name Name of the uniform parameter
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* @return Location. -1 if error.
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*/
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int shimatta_opengl_program_get_uniform_location(ShimattaOpenglProgram *program, const char *uniform_name);
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/**
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* @brief Get the location of an Attribute of a given shader program
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* @param program Shader program
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* @param attrib_name Name of the attribute
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* @return Location of attribute. -1 if error.
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*/
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int shimatta_opengl_program_get_attrib_location(ShimattaOpenglProgram *program, const char *attrib_name);
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void shimatta_opengl_program_set_uniform_float(ShimattaOpenglProgram *program, const char *uniform, float value);
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void shimatta_opengl_program_set_uniform_int(ShimattaOpenglProgram *program, const char *uniform, int value);
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void shimatta_opengl_program_set_uniform_vec2(ShimattaOpenglProgram *program, const char *uniform, vec2 value);
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void shimatta_opengl_program_set_uniform_vec3(ShimattaOpenglProgram *program, const char *uniform, vec3 value);
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void shimatta_opengl_program_set_uniform_vec4(ShimattaOpenglProgram *program, const char *uniform, vec4 value);
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void shimatta_opengl_program_set_uniform_mat2(ShimattaOpenglProgram *program, const char *uniform, mat2 value);
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void shimatta_opengl_program_set_uniform_mat3(ShimattaOpenglProgram *program, const char *uniform, mat3 value);
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void shimatta_opengl_program_set_uniform_mat4(ShimattaOpenglProgram *program, const char *uniform, mat4 value);
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G_END_DECLS
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