I see particles

Shader/particle_render.fs

@@ -1,6 +1,6 @@
 #version 430
 
-uniform sampler2D texture;
+layout (binding = 0) uniform sampler2D texture;
 
 smooth in vec2 tex_coords;
 flat in vec4 color_part;
@@ -9,6 +9,5 @@ out vec4 FragColor;
 
 void main()
 {
-  vec4 tex_color = texture2D(texture, tex_coords);
-  FragColor = vec4(tex_color.xyz, 1.0) * color_part;
+  FragColor = vec4(1.0, 0.0, 0.0, 1.0);// texture2D(texture, tex_coords) * color_part;
 }

Shader/particle_render.gs

@@ -1,10 +1,8 @@
 #version 430
 
-uniform struct Matrices
-{
-	mat4 projection;
-	mat4 view;
-} matrices;
+
+uniform mat4 projection;
+uniform mat4 view;
 
 uniform vec3 quad1, quad2;
 
@@ -21,12 +19,12 @@ smooth out vec2 tex_coords;
 flat out vec4 color_part;
 
 void main() {
-  if(type_pass[0] != 0) {
+  //if(type_pass[0] != 0) {
     // This is not a generator particle
 
     vec3 old_pos = gl_in[0].gl_Position.xyz;
     float size = size_pass[0];
-    mat4 view_projection_matrix = matrices.projection * matrices.view;
+    mat4 view_projection_matrix = projection * view;
     
     color_part = vec4(color_pass[0], lifetime_pass[0]);
        
@@ -52,5 +50,5 @@ void main() {
     EmitVertex();
       
     EndPrimitive();
-  }
+  //}
 }

Shader/particle_update.vs

@@ -14,8 +14,7 @@ out float lifetime_pass;
 out float size_pass;
 out int type_pass;
 
-void main()
-{
+void main() {
   position_pass = position;
   velocity_pass = velocity;
   color_pass = color;

cpp/ParticleSystem.cpp

@@ -1,4 +1,5 @@
 #include "Gedeng/ParticleSystem.h"
+#include "Gedeng/Logger.h"
 
 namespace Gedeng {
 
@@ -115,11 +116,12 @@ void ParticleSystem::render() {
 
     glDisable(GL_RASTERIZER_DISCARD);
     render_shader.use();
-    render_shader.setMat4("matrices.projection", projection_matrix);
-    render_shader.setMat4("matrices.view", view_matrix);
+    render_shader.setMat4("projection", projection_matrix);
+    render_shader.setMat4("view", view_matrix);
     render_shader.setVec3("quad1", quad1);
     render_shader.setVec3("quad2", quad2);
-    render_shader.setInt("texture", 0);
+
+    texture->bind_to(0);
 
     glBindVertexArray(vao[current_read_buffer]);
     glDisableVertexAttribArray(1); // Disable velocity, because we don't need it for rendering
@@ -156,5 +158,8 @@ void ParticleSystem::set_interval(float interval) {
 void ParticleSystem::set_number_of_particles(int number) {
     this->target_particle_count = number;
 }
+void ParticleSystem::set_texture(Texture *texture) {
+    this->texture = texture;
+}
 
 } // namespace Gedeng

cpp/RenderBackend.cpp

@@ -17,9 +17,9 @@ void RenderBackend::initialize_window(unsigned int width, unsigned int height, S
     gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
 
     glEnable(GL_DEPTH_TEST);
-    glEnable(GL_CULL_FACE);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    // glEnable(GL_CULL_FACE);
+    // glEnable(GL_BLEND);
+    // glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 }
 
 bool RenderBackend::is_window_created() {

include/Gedeng/ParticleSystem.h

@@ -6,6 +6,7 @@
 // Other includes
 #include "Gedeng/Camera.h"
 #include "Gedeng/Shader.h"
+#include "Gedeng/Texture.h"
 #include <GLFW/glfw3.h>
 #include <glm/glm.hpp>
 
@@ -29,6 +30,7 @@ class ParticleSystem {
     void set_size(float size);
     void set_interval(float interval);
     void set_number_of_particles(int number);
+    void set_texture(Texture *texture);
 
     void clear();
     void release();
@@ -46,7 +48,8 @@ class ParticleSystem {
     GLuint vao[2];
 
     GLuint query;
-    GLuint texture;
+
+    Texture *texture;
 
     int current_read_buffer;
     int current_particle_count;

include/Gedeng/Shader.h

@@ -3,6 +3,7 @@
 // Adapted from LearnOpenGL
 
 // Must be the first include
+#include "Gedeng/Logger.h"
 #include <glad/glad.h>
 
 // Other includes
@@ -89,51 +90,59 @@ class Shader {
     // utility uniform functions
     // ------------------------------------------------------------------------
     void setBool(const std::string &name, bool value) const {
-        glUniform1i(glGetUniformLocation(ID, name.c_str()), (int)value);
+        glUniform1i(getUniformLocation(name), (int)value);
     }
     // ------------------------------------------------------------------------
     void setInt(const std::string &name, int value) const {
-        glUniform1i(glGetUniformLocation(ID, name.c_str()), value);
+        glUniform1i(getUniformLocation(name), value);
     }
     // ------------------------------------------------------------------------
     void setFloat(const std::string &name, float value) const {
-        glUniform1f(glGetUniformLocation(ID, name.c_str()), value);
+        glUniform1f(getUniformLocation(name), value);
     }
     // ------------------------------------------------------------------------
     void setVec2(const std::string &name, const glm::vec2 &value) const {
-        glUniform2fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+        glUniform2fv(getUniformLocation(name), 1, &value[0]);
     }
     void setVec2(const std::string &name, float x, float y) const {
-        glUniform2f(glGetUniformLocation(ID, name.c_str()), x, y);
+        glUniform2f(getUniformLocation(name), x, y);
     }
     // ------------------------------------------------------------------------
     void setVec3(const std::string &name, const glm::vec3 &value) const {
-        glUniform3fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+        glUniform3fv(getUniformLocation(name), 1, &value[0]);
     }
     void setVec3(const std::string &name, float x, float y, float z) const {
-        glUniform3f(glGetUniformLocation(ID, name.c_str()), x, y, z);
+        glUniform3f(getUniformLocation(name), x, y, z);
     }
     // ------------------------------------------------------------------------
     void setVec4(const std::string &name, const glm::vec4 &value) const {
-        glUniform4fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+        glUniform4fv(getUniformLocation(name), 1, &value[0]);
     }
     void setVec4(const std::string &name, float x, float y, float z, float w) {
-        glUniform4f(glGetUniformLocation(ID, name.c_str()), x, y, z, w);
+        glUniform4f(getUniformLocation(name), x, y, z, w);
     }
     // ------------------------------------------------------------------------
     void setMat2(const std::string &name, const glm::mat2 &mat) const {
-        glUniformMatrix2fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+        glUniformMatrix2fv(getUniformLocation(name), 1, GL_FALSE, &mat[0][0]);
     }
     // ------------------------------------------------------------------------
     void setMat3(const std::string &name, const glm::mat3 &mat) const {
-        glUniformMatrix3fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+        glUniformMatrix3fv(getUniformLocation(name), 1, GL_FALSE, &mat[0][0]);
     }
     // ------------------------------------------------------------------------
     void setMat4(const std::string &name, const glm::mat4 &mat) const {
-        glUniformMatrix4fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+        glUniformMatrix4fv(getUniformLocation(name), 1, GL_FALSE, &mat[0][0]);
     }
 
   private:
+    GLint getUniformLocation(const std::string &name) const {
+        GLint location = glGetUniformLocation(ID, name.c_str());
+        if (location == -1) {
+            GG_CORE_ERROR("Invalid uniform location: " + name);
+        }
+        return location;
+    }
+
     // utility function for checking shader compilation/linking errors.
     // ------------------------------------------------------------------------
     void checkCompileErrors(GLuint shader, std::string type) {