aboutsummaryrefslogtreecommitdiff
path: root/src/RenderBackend/OpenGL
diff options
context:
space:
mode:
Diffstat (limited to 'src/RenderBackend/OpenGL')
-rw-r--r--src/RenderBackend/OpenGL/DeviceMemory.cpp28
-rw-r--r--src/RenderBackend/OpenGL/Image.cpp48
-rw-r--r--src/RenderBackend/OpenGL/Shader.cpp1
-rw-r--r--src/RenderBackend/OpenGL/ShaderProgram.cpp4
-rw-r--r--src/RenderBackend/OpenGL/Texture2D.cpp52
-rw-r--r--src/RenderBackend/OpenGL/Uniform.cpp10
6 files changed, 68 insertions, 75 deletions
diff --git a/src/RenderBackend/OpenGL/DeviceMemory.cpp b/src/RenderBackend/OpenGL/DeviceMemory.cpp
index f071cd8..a82cdaa 100644
--- a/src/RenderBackend/OpenGL/DeviceMemory.cpp
+++ b/src/RenderBackend/OpenGL/DeviceMemory.cpp
@@ -15,24 +15,6 @@ namespace amalgine
}
}
- u32 getOpenglPrimitiveType(DeviceMemory::PrimitiveType primitiveType)
- {
- switch(primitiveType)
- {
- case DeviceMemory::PrimitiveType::TRIANGLE: return GL_TRIANGLES;
- default: assert(false); return -1;
- }
- }
-
- u32 getPrimitiveTypePointsPerVertices(DeviceMemory::PrimitiveType primitiveType)
- {
- switch(primitiveType)
- {
- case DeviceMemory::PrimitiveType::TRIANGLE: return 3;
- default: assert(false); return -1;
- }
- }
-
DeviceMemory::DeviceMemory() : primitiveType(0), numVertices(0), type(DeviceMemoryType::NONE)
{
glGenBuffers(1, &vertexBufferObjectId);
@@ -57,12 +39,20 @@ namespace amalgine
numVertices = getPrimitiveTypePointsPerVertices(primitiveType);
}
*/
+ void DeviceMemory::copy(const DataView<vec2f> &texture_coords, StorageType storageType) {
+ glBindBuffer(GL_ARRAY_BUFFER, vertexBufferObjectId);
+ glBufferData(GL_ARRAY_BUFFER, texture_coords.getByteSize(), texture_coords.data, getOpenglStorageType(storageType));
+ primitiveType = GL_TRIANGLES;
+ numVertices = texture_coords.size * 2;
+ type = DeviceMemoryType::VEC2;
+ }
+
void DeviceMemory::copy(const DataView<Triangle2D> &triangles, StorageType storageType)
{
glBindBuffer(GL_ARRAY_BUFFER, vertexBufferObjectId);
glBufferData(GL_ARRAY_BUFFER, triangles.getByteSize(), triangles.data, getOpenglStorageType(storageType));
primitiveType = GL_TRIANGLES;
- numVertices = triangles.size * 3;
+ numVertices = triangles.size * 2;
type = DeviceMemoryType::VEC2;
}
diff --git a/src/RenderBackend/OpenGL/Image.cpp b/src/RenderBackend/OpenGL/Image.cpp
deleted file mode 100644
index 128a580..0000000
--- a/src/RenderBackend/OpenGL/Image.cpp
+++ /dev/null
@@ -1,48 +0,0 @@
-#include "../../../include/RenderBackend/OpenGL/Image.hpp"
-#include <SOIL/SOIL.h>
-
-using namespace std;
-
-namespace amalgine
-{
- Image::Image(unsigned char *_imageData, i32 _width, i32 _height) : imageData(_imageData), width(_width), height(_height)
- {
-
- }
-
- Result<Image*> Image::loadFromFile(const char *filepath)
- {
- int width;
- int height;
- unsigned char *imageData = SOIL_load_image(filepath, &width, &height, 0, SOIL_LOAD_RGB);
- if(!imageData)
- {
- string errMsg = "Failed to load image from file: ";
- errMsg += filepath;
- errMsg += "; SOIL error message: ";
- errMsg += SOIL_last_result();
- return Result<Image*>::Err(errMsg);
- }
- return Result<Image*>::Ok(new Image(imageData, width, height));
- }
-
- const unsigned char* Image::getData() const
- {
- return imageData;
- }
-
- i32 Image::getWidth() const
- {
- return width;
- }
-
- i32 Image::getHeight() const
- {
- return height;
- }
-
- Image::~Image()
- {
- SOIL_free_image_data(imageData);
- }
-}
diff --git a/src/RenderBackend/OpenGL/Shader.cpp b/src/RenderBackend/OpenGL/Shader.cpp
index 3b6563f..32e2fe6 100644
--- a/src/RenderBackend/OpenGL/Shader.cpp
+++ b/src/RenderBackend/OpenGL/Shader.cpp
@@ -10,6 +10,7 @@ namespace amalgine {
return GL_FRAGMENT_SHADER;
}
assert(false);
+ return 0;
}
static std::string get_shader_compile_log(GLuint shaderId)
diff --git a/src/RenderBackend/OpenGL/ShaderProgram.cpp b/src/RenderBackend/OpenGL/ShaderProgram.cpp
index 389a929..14b15aa 100644
--- a/src/RenderBackend/OpenGL/ShaderProgram.cpp
+++ b/src/RenderBackend/OpenGL/ShaderProgram.cpp
@@ -73,7 +73,7 @@ namespace amalgine {
return Result<Uniform>::Ok(std::move(uniform));
}
- int ShaderProgram::set_vertex_input(const char *name, const DeviceMemory &data) {
+ int ShaderProgram::set_input_data(const char *name, const DeviceMemory &data) {
GLint attrib_location = glGetAttribLocation(program_id, name);
if(attrib_location == -1) {
fprintf(stderr, "No such attribute in shader: %s\n", name);
@@ -81,6 +81,7 @@ namespace amalgine {
}
data.use();
+ glEnableVertexAttribArray(attrib_location);
switch(data.get_type()) {
case DeviceMemoryType::NONE:
return -1;
@@ -93,7 +94,6 @@ namespace amalgine {
break;
}
}
- glEnableVertexAttribArray(attrib_location);
return 0;
}
diff --git a/src/RenderBackend/OpenGL/Texture2D.cpp b/src/RenderBackend/OpenGL/Texture2D.cpp
index 07d807a..a561f6e 100644
--- a/src/RenderBackend/OpenGL/Texture2D.cpp
+++ b/src/RenderBackend/OpenGL/Texture2D.cpp
@@ -1,15 +1,54 @@
#include "../../../include/RenderBackend/OpenGL/Texture2D.hpp"
-#include "../../../include/RenderBackend/OpenGL/Image.hpp"
#include "../../../include/RenderBackend/OpenGL/opengl.hpp"
+#include "../../../include/Image.hpp"
+#include <stack>
#include <cassert>
-namespace amalgine
-{
+namespace amalgine {
+ struct TextureIdAllocator {
+ TextureIdAllocator(){
+ glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_units);
+ if(max_texture_units < 1)
+ max_texture_units = 1;
+ printf("max texture units: %d\n", max_texture_units);
+ }
+
+ u32 get_free_texture_id() {
+ if(!free_spots.empty()) {
+ u32 texture_id = free_spots.top();
+ free_spots.pop();
+ return texture_id;
+ }
+
+ if(texture_id_counter + 1 == max_texture_units) {
+ fprintf(stderr, "Error: No free spot left for textures, resetting counter\n");
+ texture_id_counter = 0;
+ }
+
+ return texture_id_counter++;
+ }
+
+ void free_texture_id(i32 texture_id) {
+ free_spots.push(texture_id);
+ }
+
+ std::stack<u32> free_spots;
+ i32 texture_id_counter = 0;
+ i32 max_texture_units = 0;
+ };
+
+ static TextureIdAllocator *texture_id_allocator = nullptr;
+
Texture2D::Texture2D(Image *image)
{
assert(image);
- glGenTextures(1, &textureId);
- glBindTexture(GL_TEXTURE_2D, textureId);
+ if(!texture_id_allocator)
+ texture_id_allocator = new TextureIdAllocator();
+
+ texture_id = texture_id_allocator->get_free_texture_id();
+ glGenTextures(1, &texture_ref);
+ glActiveTexture(GL_TEXTURE0 + texture_id);
+ glBindTexture(GL_TEXTURE_2D, texture_ref);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image->getWidth(), image->getHeight(), 0, GL_RGB, GL_UNSIGNED_BYTE, image->getData());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@@ -21,6 +60,7 @@ namespace amalgine
Texture2D::~Texture2D()
{
- glDeleteTextures(1, &textureId);
+ texture_id_allocator->free_texture_id(texture_id);
+ glDeleteTextures(1, &texture_ref);
}
}
diff --git a/src/RenderBackend/OpenGL/Uniform.cpp b/src/RenderBackend/OpenGL/Uniform.cpp
index 67cf3c6..5f68bc6 100644
--- a/src/RenderBackend/OpenGL/Uniform.cpp
+++ b/src/RenderBackend/OpenGL/Uniform.cpp
@@ -4,6 +4,11 @@
namespace amalgine {
Uniform::~Uniform() {}
+ void Uniform::set(float value) {
+ use();
+ glUniform1f(uniform_id, value);
+ }
+
void Uniform::set(const vec3f &value) {
use();
glUniform3f(uniform_id, value.x, value.y, value.z);
@@ -14,6 +19,11 @@ namespace amalgine {
glUniformMatrix4fv(uniform_id, 1, GL_FALSE, glm::value_ptr(value));
}
+ void Uniform::set(const Texture2D &texture) {
+ use();
+ glUniform1i(uniform_id, texture.get_texture_id());
+ }
+
Uniform::Uniform(i32 uniform_id, u32 shader_program_id) : uniform_id(uniform_id), program_id(shader_program_id) {
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 10:10:55 +0000