vtgl

Commit: 9f1013ae9084c9abe499a2b58e108731b196cea5
Parent: ff73f9bc324170725e679b93f9d20c0599dba62c
Author: Randy Palamar
Date:   Sun,  7 Jul 2024 09:37:49 -0600

reset pmat when shaders are reloaded

Diffstat:
M
vtgl.c
 | 
35
+++++++++++++++++++++++------------

1 file changed, 23 insertions(+), 12 deletions(-)
diff --git a/vtgl.c b/vtgl.c
@@ -33,6 +33,26 @@ clear_colour(void)
 }
 
 static void
+set_projection_matrix(GLCtx *gl)
+{
+	f32 w = gl->window_size.w;
+	f32 h = gl->window_size.h;
+
+	f32 pmat[4 * 4] = {
+		2.0/w,   0.0,      0.0,    -1.0,
+		0.0,     2.0/h,    0.0,    -1.0,
+		0.0,     0.0,     -1.0,     0.0,
+		0.0,     0.0,      0.0,     1.0,
+	};
+
+	glUseProgram(gl->programs[SHADER_RENDER]);
+	glUniformMatrix4fv(gl->render.Pmat, 1, GL_TRUE, pmat);
+	glUseProgram(gl->programs[SHADER_POST]);
+	glUniformMatrix4fv(gl->post.Pmat, 1, GL_TRUE, pmat);
+}
+
+
+static void
 resize(Term *t)
 {
 	v2 ws = t->gl.window_size;
@@ -79,7 +99,7 @@ update_uniforms(Term *t, enum shader_stages stage)
 	case SHADER_POST:
 		for (u32 i = 0; i < ARRAY_COUNT(t->gl.post.uniforms); i++) {
 			t->gl.post.uniforms[i] = glGetUniformLocation(t->gl.programs[stage],
-			                                                post_uniform_names[i]);
+			                                              post_uniform_names[i]);
 			//fprintf(stderr, "uniform (POST): %s; id %d\n",
 			//        post_uniform_names[i], t->gl.post.uniforms[i]);
 		}
@@ -88,6 +108,7 @@ update_uniforms(Term *t, enum shader_stages stage)
 	case SHADER_LAST: ASSERT(0); break;
 	}
 
+	set_projection_matrix(&t->gl);
 	update_font_textures(t);
 }
 
@@ -265,17 +286,7 @@ fb_callback(GLFWwindow *win, i32 w, i32 h)
 	glBindTexture(GL_TEXTURE_2D, t->gl.fb_tex);
 	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
 
-	f32 pmat[4 * 4] = {
-		2.0/w,   0.0,      0.0,    -1.0,
-		0.0,     2.0/h,    0.0,    -1.0,
-		0.0,     0.0,     -1.0,     0.0,
-		0.0,     0.0,      0.0,     1.0,
-	};
-
-	glUseProgram(t->gl.programs[SHADER_RENDER]);
-	glUniformMatrix4fv(t->gl.render.Pmat, 1, GL_TRUE, pmat);
-	glUseProgram(t->gl.programs[SHADER_POST]);
-	glUniformMatrix4fv(t->gl.post.Pmat, 1, GL_TRUE, pmat);
+	set_projection_matrix(&t->gl);
 
 	resize(t);
 }