added some more utils stuff

gryphn_utils.h

@@ -9,6 +9,7 @@
 #include "utils/math/gryphn_vec2.h"
 #include "utils/math/gryphn_vec3.h"
 #include "utils/math/gryphn_vec4.h"
+#include "utils/math/gryphn_mat4.h"
 #include "utils/gryphn_color.h"
 #include "utils/gryphn_color_format.h"
 #include "utils/gryphn_image_format.h"

utils/gryphn_error_code.h

@@ -37,7 +37,8 @@ typedef enum gnReturnCode_t {
     GN_OUT_OF_DATE_PRESENTATION_QUEUE,
     GN_SUBOPTIMAL_PRESENTATION_QUEUE,
     GN_FAILED_TO_CREATE_BUFFER,
-    GN_FAILED_TO_ALLOCATE_MEMORY
+    GN_FAILED_TO_ALLOCATE_MEMORY,
+    GN_FAILED_TO_CREATE_IMAGE
 } gnReturnCode;
 
 typedef gnReturnCode gnErrorCode;
@@ -80,5 +81,6 @@ static const char* gnErrorCodeToCString(enum gnReturnCode_t returnCode) {
     case GN_SUBOPTIMAL_PRESENTATION_QUEUE: return "GN_SUBOPTIMAL_PRESENTATION_QUEUE";
     case GN_FAILED_TO_ALLOCATE_MEMORY: return "GN_FAILED_TO_ALLOCATE_MEMORY";
     case GN_FAILED_TO_CREATE_BUFFER: return "GN_FAILED_TO_CREATE_BUFFER";
+    case GN_FAILED_TO_CREATE_IMAGE: return "GN_FAILED_TO_CREATE_IMAGE";
     }
 }

utils/gryphn_image_format.h

@@ -1,18 +1,18 @@
 #pragma once
 
-typedef enum gnImageFormat_e {
+typedef enum gnImageFormat {
     GN_FORMAT_NONE,
     GN_FORMAT_BGRA8_SRGB
 } gnImageFormat;
 
-typedef enum gnColorSpace_e {
+typedef enum gnColorSpace {
     GN_COLOR_SPACE_SRGB_NONLINEAR
 } gnColorSpace;
 
-typedef enum gnImageSharingMode_e {
+typedef enum gnImageSharingMode {
     GN_SHARING_MODE_EXCLUSIVE, GN_SHARING_MODE_CONCURRENT
 } gnImageSharingMode;
 
-typedef enum gnImageLayout_e {
+typedef enum gnImageLayout {
     GN_LAYOUT_UNDEFINED, GN_LAYOUT_PRESENTATION_QUEUE_IMAGE, GN_LAYOUT_TRANSFER_DESTINATION, GN_COLOR_ATTACHMENT
 } gnImageLayout;

utils/math/gryphn_mat4.h

@@ -1,11 +1,12 @@
 #pragma once
+#include "math.h"
 
 typedef struct gnMat4x4 {
     float mat[4][4];
 } gnMat4x4;
 typedef gnMat4x4 gnMat4;
 
-gnMat4x4 gnIdentity() {
+static inline const gnMat4x4 gnIdentity() {
     return (gnMat4x4){
         .mat = {
             { 1.0f, 0.0f, 0.0f, 0.0f },
@@ -15,3 +16,34 @@ gnMat4x4 gnIdentity() {
         }
     };
 }
+
+
+static inline const gnMat4x4 gnOrthographic(
+    float left, float right, float top, float bottom, float near, float far
+) {
+    return (gnMat4x4){
+        .mat = {
+            { (2)/(right-left), 0.0f, 0.0f, -((right+left)/(right-left)) },
+            { 0.0f, 2/(top-bottom), 0.0f, -((top+bottom)/(top-bottom)) },
+            { 0.0f, 0.0f, -2/(far-near), -((far+near)/(far-near)) },
+            { 0.0f, 0.0f, 0.0f, 1.0f }
+        }
+    };
+}
+
+static inline const gnMat4x4 gnProjection(
+    float fov, float aspect, float near, float far
+) {
+    return (gnMat4x4){
+        .mat = {
+            { 1/(aspect * tan(fov/2)), 0.0f, 0.0f, 0.0f },
+            { 0.0f, 1/tan(fov/2), 0.0f, 0.0f },
+            { 0.0f, 0.0f, -((far+near)/(far-near)), -((2*far*near)/(far-near)) },
+            { 0.0f, 0.0f, -1.0f, 1.0f }
+            // { 1/(aspect * tan(fov/2)), 0.0f, 0.0f, 0.0f },
+            // { 0.0f, 1/tan(fov/2), 0.0f, 0.0f },
+            // { 0.0f, 0.0f, -((far+near)/(far-near)), -((2*far*near)/(far-near)) },
+            // { 0.0f, 0.0f, -1.0f, 0.0f }
+        }
+    };
+}