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-rw-r--r--demo/container.jpgbin0 -> 184939 bytes
-rw-r--r--demo/honey.lua80
-rw-r--r--src/gl/CMakeLists.txt1
-rw-r--r--src/gl/gl.c2
-rw-r--r--src/gl/gl.h1
-rw-r--r--src/gl/shader.c11
-rw-r--r--src/gl/texture.c93
-rw-r--r--src/main.c2
8 files changed, 172 insertions, 18 deletions
diff --git a/demo/container.jpg b/demo/container.jpg
new file mode 100644
index 0000000..d07bee4
--- /dev/null
+++ b/demo/container.jpg
Binary files differ
diff --git a/demo/honey.lua b/demo/honey.lua
index 7f02006..6d2cdfc 100644
--- a/demo/honey.lua
+++ b/demo/honey.lua
@@ -24,28 +24,35 @@ end)
local vertexShaderSource = [[
+
#version 330 core
layout (location = 0) in vec3 aPos;
layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec2 aTexCoord;
-out vec3 pColor;
+out vec3 ourColor;
+out vec2 TexCoord;
void main()
{
- pColor = aColor;
- gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
+ gl_Position = vec4(aPos, 1.0);
+ ourColor = aColor;
+ TexCoord = aTexCoord;
}
]]
local fragmentShaderSource = [[
#version 330 core
-in vec3 pColor;
-uniform vec4 color;
out vec4 FragColor;
+
+in vec3 ourColor;
+in vec2 TexCoord;
+
+uniform sampler2D ourTexture;
void main()
{
- FragColor = vec4(pColor.rgb, 1);
+ FragColor = texture(ourTexture, TexCoord);
}
]]
@@ -64,12 +71,35 @@ gl.shader.delete(vertexShader)
gl.shader.delete(fragmentShader)
+----------------------------------------------------------------
+
+local texture = gl.texture.create()
+gl.texture.bind(gl.texture.bindTarget.texture2d, texture)
+err = gl.getError()
+if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+
+
+local image, width, height, channels = honey.image.load('container.jpg', 0)
+gl.texture.bufferImage2d(
+ gl.texture.bindTarget.texture2d, 0,
+ gl.texture.format.rgb,
+ width, height,
+ gl.texture.format.rgb, gl.dataType.uchar,
+ image
+)
+gl.texture.generateMipmaps(gl.texture.bindTarget.texture2d)
+err = gl.getError()
+if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+
+honey.image.destroy(image)
+
+
local vertices = {
- -- position color
- 0.5, 0.5, 0.0, 0, 0, 0,
- 0.5, -0.5, 0.0, 1, 0, 0,
- -0.5, -0.5, 0.0, 0, 1, 0,
- -0.5, 0.5, 0.0, 0, 0, 1
+ -- position color uvs
+ 0.5, 0.5, 0.0, 0, 0, 0, 1, 1,
+ 0.5, -0.5, 0.0, 1, 0, 0, 1, 0,
+ -0.5, -0.5, 0.0, 0, 1, 0, 0, 0,
+ -0.5, 0.5, 0.0, 0, 0, 1, 0, 1
}
local indices = {
0, 1, 3,
@@ -91,24 +121,38 @@ if gl.getError() ~= gl.errorType.noError then error(gl.getError()) end
gl.data.bindBuffer(gl.data.bufferTarget.elementArrayBuffer, elementBuffer)
gl.data.bufferData(gl.data.bufferTarget.elementArrayBuffer, gl.dataType.uint, indices, gl.data.bufferUsage.staticDraw)
-gl.data.vertexAttribPointer(0, 3, false, 6, 0)
+gl.data.vertexAttribPointer(0, 3, false, 8, 0)
gl.data.vertexArrayEnableAttrib(0)
-gl.data.vertexAttribPointer(1, 3, false, 6, 3)
+gl.data.vertexAttribPointer(1, 3, false, 8, 3)
gl.data.vertexArrayEnableAttrib(1)
+gl.data.vertexAttribPointer(2, 2, false, 8, 6)
+gl.data.vertexArrayEnableAttrib(2)
gl.data.bindBuffer(gl.data.bufferTarget.arrayBuffer, 0)
if gl.getError() ~= gl.errorType.noError then error(gl.getError()) end
+gl.shader.use(shader)
+local textureLocation = gl.shader.getUniformLocation(shader, "ourTexture")
+err = gl.getError()
+if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+gl.shader.uniform1i(textureLocation, 0)
+err = gl.getError()
+if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+
+
while not window.shouldClose(w) do
gl.draw.setClearColor(0.2, 0.3, 0.3, 1.0)
gl.draw.clear(gl.draw.bufferMask.colorBuffer);
- gl.shader.use(shader)
- local time = window.getTime()
- local greenValue = (math.sin(time) / 2) + 0.5
- local colorLocation = gl.shader.getUniformLocation(shader, 'color')
- gl.shader.uniform4f(colorLocation, 0, greenValue, 0, 1)
+ gl.texture.setActiveUnit(0)
+ err = gl.getError()
+ if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+ gl.texture.bind(gl.texture.bindTarget.texture2d, texture)
+ err = gl.getError()
+ if err ~= gl.errorType.noError then error(gl.errorName(err)) end
+
+ gl.shader.use(shader)
gl.data.bindVertexArray(vertexArray)
gl.draw.drawElements(gl.draw.primitiveType.triangles, 6, gl.dataType.uint, 0)
diff --git a/src/gl/CMakeLists.txt b/src/gl/CMakeLists.txt
index f995ef5..d4bc770 100644
--- a/src/gl/CMakeLists.txt
+++ b/src/gl/CMakeLists.txt
@@ -7,6 +7,7 @@ target_sources(honey PUBLIC
${GL}/drawing.c
${GL}/shader.c
${GL}/window.c
+ ${GL}/texture.c
${GL}/gl.c
${GL}/glad/glad.c
)
diff --git a/src/gl/gl.c b/src/gl/gl.c
index 8f56d33..c4502dc 100644
--- a/src/gl/gl.c
+++ b/src/gl/gl.c
@@ -21,6 +21,7 @@ int gl_get_error(lua_State *L);
void setup_gl(lua_State *L, int honey_index)
{
int data_types = hs_create_table(L,
+ hs_str_int("uchar", GL_UNSIGNED_BYTE),
hs_str_int("uint", GL_UNSIGNED_INT),
hs_str_int("int", GL_INT),
hs_str_int("float", GL_FLOAT),
@@ -48,6 +49,7 @@ void setup_gl(lua_State *L, int honey_index)
setup_shader(L, gl_index);
setup_drawing(L, gl_index);
setup_data(L, gl_index);
+ setup_texture(L, gl_index);
lua_setfield(L, honey_index, "gl");
}
diff --git a/src/gl/gl.h b/src/gl/gl.h
index 766fe63..8aa1ef7 100644
--- a/src/gl/gl.h
+++ b/src/gl/gl.h
@@ -7,6 +7,7 @@ void setup_gl(lua_State *L, int honey_index);
void setup_shader(lua_State *L, int gl_index);
void setup_drawing(lua_State *L, int gl_index);
void setup_data(lua_State *L, int gl_index);
+void setup_texture(lua_State *L, int gl_index);
void setup_window(lua_State *L, int honey_index);
diff --git a/src/gl/shader.c b/src/gl/shader.c
index fb64bc0..c3b409c 100644
--- a/src/gl/shader.c
+++ b/src/gl/shader.c
@@ -14,6 +14,7 @@ int gl_program_link(lua_State *L);
int gl_program_use(lua_State *L);
int gl_uniform_get_location(lua_State *L);
+int gl_uniform_1i(lua_State *L);
int gl_uniform_4f(lua_State *L);
@@ -36,6 +37,7 @@ void setup_shader(lua_State *L, int gl_index)
hs_str_cfunc("use", gl_program_use),
hs_str_cfunc("getUniformLocation", gl_uniform_get_location),
+ hs_str_cfunc("uniform1i", gl_uniform_1i),
hs_str_cfunc("uniform4f", gl_uniform_4f),
hs_str_tbl("type", shader_types),
@@ -141,6 +143,15 @@ int gl_uniform_get_location(lua_State *L)
}
+int gl_uniform_1i(lua_State *L)
+{
+ lua_Integer location, v0;
+ hs_parse_args(L, hs_int(location), hs_int(v0));
+ glUniform1i(location, v0);
+ return 0;
+}
+
+
int gl_uniform_4f(lua_State *L)
{
lua_Integer location;
diff --git a/src/gl/texture.c b/src/gl/texture.c
new file mode 100644
index 0000000..d0c3a0a
--- /dev/null
+++ b/src/gl/texture.c
@@ -0,0 +1,93 @@
+#include "gl/glad/glad.h"
+#include <GLFW/glfw3.h>
+#include <lua.h>
+#include <honeysuckle.h>
+
+
+int gl_texture_create(lua_State *L);
+int gl_texture_bind(lua_State *L);
+int gl_texture_image_2d(lua_State *L);
+int gl_texture_generate_mipmaps(lua_State *L);
+int gl_texture_set_active(lua_State *L);
+
+
+void setup_texture(lua_State *L, int gl_index)
+{
+ int bind_targets = hs_create_table(L,
+ hs_str_int("texture2d", GL_TEXTURE_2D),
+ );
+
+ int formats = hs_create_table(L,
+ hs_str_int("rgb", GL_RGB),
+ hs_str_int("rgba", GL_RGBA),
+ );
+
+ hs_create_table(L,
+ hs_str_cfunc("create", gl_texture_create),
+ hs_str_cfunc("bind", gl_texture_bind),
+ hs_str_cfunc("bufferImage2d", gl_texture_image_2d),
+ hs_str_cfunc("generateMipmaps", gl_texture_generate_mipmaps),
+ hs_str_cfunc("setActiveUnit", gl_texture_set_active),
+
+ hs_str_tbl("bindTarget", bind_targets),
+ hs_str_tbl("format", formats),
+ );
+
+ lua_setfield(L, gl_index, "texture");
+}
+
+
+int gl_texture_create(lua_State *L)
+{
+ unsigned int texture;
+ glGenTextures(1, &texture);
+ lua_pushinteger(L, texture);
+ return 1;
+}
+
+
+int gl_texture_bind(lua_State *L)
+{
+ lua_Integer target, texture;
+ hs_parse_args(L, hs_int(target), hs_int(texture));
+ glBindTexture(target, texture);
+ return 0;
+}
+
+
+int gl_texture_image_2d(lua_State *L)
+{
+ lua_Integer target, mipmap_level,
+ internal_format,
+ width, height,
+ format, type;
+ void *data;
+ hs_parse_args(L,
+ hs_int(target), hs_int(mipmap_level),
+ hs_int(internal_format),
+ hs_int(width), hs_int(height),
+ hs_int(format), hs_int(type),
+ hs_light(data)
+ );
+
+ glTexImage2D(target, mipmap_level, internal_format, width, height, 0, format, type, data);
+ return 0;
+}
+
+
+int gl_texture_generate_mipmaps(lua_State *L)
+{
+ lua_Integer target;
+ hs_parse_args(L, hs_int(target));
+ glGenerateMipmap(target);
+ return 0;
+}
+
+
+int gl_texture_set_active(lua_State *L)
+{
+ lua_Integer unit;
+ hs_parse_args(L, hs_int(unit));
+ glActiveTexture(GL_TEXTURE0 + unit);
+ return 0;
+}
diff --git a/src/main.c b/src/main.c
index c989dbd..66b1f11 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3,6 +3,7 @@
#include <lualib.h>
#include <honeysuckle.h>
#include "gl/gl.h"
+#include "image/image.h"
int main(int argc, char **argv)
@@ -14,6 +15,7 @@ int main(int argc, char **argv)
int honey_index = lua_gettop(L);
setup_gl(L, honey_index);
setup_window(L, honey_index);
+ setup_image(L, honey_index);
lua_setglobal(L, "honey");
int err = luaL_loadfile(L, "honey.lua");
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-23 02:33:26 +0000