a-game

commit cc6d6631b6661f22d7ef8e83fcf4e270ea5ae386
parent 87fde893b5588cef87c9ed69028d42b53a443ad8
Author: Amin Mesbah <dev@aminmesbah.com>
Date:   Mon,  8 Jul 2019 17:39:20 -0700

Get webgl scissoring to work

Diffstat:
M
src/game.c
 | 
2
+-
M
src/platform_wasm_js_symbols.txt
 | 
1
+
M
src/platform_wasm_loader.js
 | 
3
+++
M
src/webgl.h
 | 
7
+++++++

4 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/src/game.c b/src/game.c
@@ -416,7 +416,7 @@ void game_update_and_render(struct GameMemory *game_memory, struct GameInput *ga
 
         // game_detect_collisions
         {
-#if 1
+#if 0
 #define RENDER_COLLISION_DEBUG_QUAD(r, c) renderer_debug_quad_draw(&game_state->renderer, (r), (c));
 #else
 #define RENDER_COLLISION_DEBUG_QUAD(r, c)
diff --git a/src/platform_wasm_js_symbols.txt b/src/platform_wasm_js_symbols.txt
@@ -29,6 +29,7 @@ webglGetShaderInfoLog
 webglGetShaderParameter
 webglGetUniformLocation
 webglLinkProgram
+webglScissor
 webglShaderSource
 webglTexImage2D
 webglTexParameteri
diff --git a/src/platform_wasm_loader.js b/src/platform_wasm_loader.js
@@ -152,6 +152,9 @@ imports["webglLinkProgram"] = function(program_id) {
     let program = gl_id_map[program_id];
     gl.linkProgram(program);
 }
+imports["webglScissor"] = function(x, y, width, height) {
+    gl.scissor(x, y, width, height);
+}
 imports["webglShaderSource"] = function(shader_id, source_ptr, source_len) {
     let shader = gl_id_map[shader_id];
     let arr = memory.subarray(source_ptr, source_ptr + source_len);
diff --git a/src/webgl.h b/src/webgl.h
@@ -37,6 +37,7 @@ void webglGetShaderInfoLog(i32 shader, char *out_buf);
 int  webglGetShaderParameter(i32 shader, i32 param);
 i32  webglGetUniformLocation(i32 program, const char name[static 1], i32 name_len);
 void webglLinkProgram(i32 program);
+void webglScissor(i32 x, i32 y, i32 width, i32 height);
 void webglShaderSource(i32 shader, const char source[static 1], i32 source_len);
 void webglTexImage2D(i32 target, i32 level, i32 internalformat, i32 width, i32 height, i32 border, i32 format, i32 type, i32 pixels);
 void webglTexParameteri(i32 target, i32 pname, i32 param);
@@ -59,6 +60,7 @@ void webglViewport(i32 x, i32 y, i32 width, i32 height);
 #define GL_FRONT_AND_BACK 0x0408
 #define GL_DEPTH_TEST 0x0B71
 #define GL_BLEND 0x0BE2
+#define GL_SCISSOR_TEST 0x0C11
 #define GL_TEXTURE_2D 0x0DE1
 #define GL_UNSIGNED_BYTE 0x1401
 #define GL_UNSIGNED_INT 0x1405
@@ -287,6 +289,11 @@ inline void glPolygonMode(GLenum face, GLenum mode)
     // No Op. This doesn't exist in webgl
 }
 
+inline void glScissor(GLint x, GLint y, GLsizei width, GLsizei height)
+{
+    webglScissor(WEBGL_CAST_I32(x), WEBGL_CAST_I32(y), WEBGL_CAST_I32(width), WEBGL_CAST_I32(height));
+}
+
 inline void glShaderSource(GLuint shader, GLsizei count, const GLchar *const *string, const GLint *length)
 {
     const GLchar *s = (void *)*string;